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    <Identifier>id000057</Identifier>
    <IdentifierDoi>10.3205/id000057</IdentifierDoi>
    <IdentifierUrn>urn:nbn:de:0183-id0000570</IdentifierUrn>
    <ArticleType language="de">Leitlinie</ArticleType>
    <ArticleType language="en">Guideline</ArticleType>
    <TitleGroup>
      <Title language="de">Kalkulierte parenterale Initialtherapie bakterieller Infektionen: Intraabdominelle Infektionen</Title>
      <TitleTranslated language="en">Calculated parenteral initial treatment of bacterial infections: Intra-abdominal infections</TitleTranslated>
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    <CreatorList>
      <Creator>
        <PersonNames>
          <Lastname>Eckmann</Lastname>
          <LastnameHeading>Eckmann</LastnameHeading>
          <Firstname>Christian</Firstname>
          <Initials>C</Initials>
          <AcademicTitle>Prof. Dr.</AcademicTitle>
        </PersonNames>
        <Address language="de">Klinik f&#252;r Allgemein-, Viszeral- und Thoraxchirurgie, Klinikum Hannoversch-M&#252;nden, Vogelsang 105, 34346 Hannoversch-M&#252;nden, Deutschland<Affiliation>Klinik f&#252;r Allgemein-, Viszeral- und Thoraxchirurgie, Klinikum Hannoversch-M&#252;nden, Deutschland</Affiliation></Address>
        <Address language="en">Klinik f&#252;r Allgemein-, Viszeral- und Thoraxchirurgie, Klinikum Hannoversch-M&#252;nden, Vogelsang 105, 34346 Hannoversch-M&#252;nden, Germany<Affiliation>Klinik f&#252;r Allgemein-, Viszeral- und Thoraxchirurgie, Klinikum Hannoversch-M&#252;nden, Germany</Affiliation></Address>
        <Email>c.eckmann&#64;khmue.de</Email>
        <Creatorrole corresponding="yes" presenting="no">author</Creatorrole>
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      <Creator>
        <PersonNames>
          <Lastname>Isenmann</Lastname>
          <LastnameHeading>Isenmann</LastnameHeading>
          <Firstname>Rainer</Firstname>
          <Initials>R</Initials>
        </PersonNames>
        <Address language="de">
          <Affiliation>Allgemein- und Visceralchirurgie, St. Anna-Virngrund-Klinik Ellwangen, Deutschland</Affiliation>
        </Address>
        <Address language="en">
          <Affiliation>Allgemein- und Visceralchirurgie, St. Anna-Virngrund-Klinik Ellwangen, Germany</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
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      <Creator>
        <PersonNames>
          <Lastname>Kujath</Lastname>
          <LastnameHeading>Kujath</LastnameHeading>
          <Firstname>Peter</Firstname>
          <Initials>P</Initials>
        </PersonNames>
        <Address language="de">
          <Affiliation>Chirurgische Klinik, Medizinische Universit&#228;t L&#252;beck, Deutschland</Affiliation>
        </Address>
        <Address language="en">
          <Affiliation>Chirurgische Klinik, Medizinische Universit&#228;t L&#252;beck, Germany</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
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      <Creator>
        <PersonNames>
          <Lastname>Pross</Lastname>
          <LastnameHeading>Pross</LastnameHeading>
          <Firstname>Annette</Firstname>
          <Initials>A</Initials>
        </PersonNames>
        <Address language="de">
          <Affiliation>Klinik und Poliklinik f&#252;r Chirurgie, Universit&#228;tsklinikum Regensburg, Deutschland</Affiliation>
        </Address>
        <Address language="en">
          <Affiliation>Klinik und Poliklinik f&#252;r Chirurgie, Universit&#228;tsklinikum Regensburg, Germany</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
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      <Creator>
        <PersonNames>
          <Lastname>Rodloff</Lastname>
          <LastnameHeading>Rodloff</LastnameHeading>
          <Firstname>Arne C.</Firstname>
          <Initials>AC</Initials>
        </PersonNames>
        <Address language="de">
          <Affiliation>Institut f&#252;r Medizinische Mikrobiologie und Infektionsepidemiologie, Universit&#228;tsklinikum Leipzig, Deutschland</Affiliation>
        </Address>
        <Address language="en">
          <Affiliation>Institut f&#252;r Medizinische Mikrobiologie und Infektionsepidemiologie, Universit&#228;tsklinikum Leipzig, Germany</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
      </Creator>
      <Creator>
        <PersonNames>
          <Lastname>Schmitz</Lastname>
          <LastnameHeading>Schmitz</LastnameHeading>
          <Firstname>Franz-Josef</Firstname>
          <Initials>FJ</Initials>
        </PersonNames>
        <Address language="de">
          <Affiliation>Institut f&#252;r Laboratoriumsmedizin, Mikrobiologie, Hygiene, Umweltmedizin und Transfusionsmedizin Johannes Wesling Klinikum Minden, Deutschland</Affiliation>
        </Address>
        <Address language="en">
          <Affiliation>Institut f&#252;r Laboratoriumsmedizin, Mikrobiologie, Hygiene, Umweltmedizin und Transfusionsmedizin Johannes Wesling Klinikum Minden, Germany</Affiliation>
        </Address>
        <Creatorrole corresponding="no" presenting="no">author</Creatorrole>
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    </CreatorList>
    <PublisherList>
      <Publisher>
        <Corporation>
          <Corporatename>German Medical Science GMS Publishing House</Corporatename>
        </Corporation>
        <Address>D&#252;sseldorf</Address>
      </Publisher>
    </PublisherList>
    <SubjectGroup>
      <SubjectheadingDDB>610</SubjectheadingDDB>
      <SectionHeading language="en">Calculated parenteral initial therapy</SectionHeading>
      <SectionHeading language="de">Kalkulierte parenterale Initialtherapie</SectionHeading>
    </SubjectGroup>
    <DatePublishedList>
      
    <DatePublished>20200326</DatePublished></DatePublishedList>
    <Language>germ</Language>
    <LanguageTranslation>engl</LanguageTranslation>
    <License license-type="open-access" xlink:href="http://creativecommons.org/licenses/by/4.0/">
      <AltText language="en">This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License.</AltText>
      <AltText language="de">Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung).</AltText>
    </License>
    <SourceGroup>
      <Journal>
        <ISSN>2195-8831</ISSN>
        <Volume>8</Volume>
        <JournalTitle>GMS Infectious Diseases</JournalTitle>
        <JournalTitleAbbr>GMS Infect Dis</JournalTitleAbbr>
      </Journal>
    </SourceGroup>
    <ArticleNo>13</ArticleNo>
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    <Abstract language="de" linked="yes"><Pgraph>Dies ist das siebte Kapitel der von der Paul-Ehrlich-Gesellschaft f&#252;r Chemotherapie e.V. (PEG) herausgegebenen S2k Leitlinie &#8222;Kalkulierte parenterale Initialtherapie bakterieller Erkrankungen bei Erwachsenen &#8211; Update 2018&#8220; in der 2. aktualisierten Fassung.</Pgraph><Pgraph>Es behandelt die empirische und gezielte antimikrobielle Therapie komplizierter intraabdominaler Infektionen und enth&#228;lt Empfehlungen f&#252;r die antibakterielle und antimykotische Behandlung.</Pgraph></Abstract>
    <Abstract language="en" linked="yes"><Pgraph>This is the seventh chapter of the guideline &#8220;Calculated initial parenteral treatment of bacterial infections in adults &#8211; update 2018&#8221; in the 2<Superscript>nd</Superscript> updated version. The German guideline by the Paul-Ehrlich-Gesellschaft f&#252;r Chemotherapie e.V. (PEG) has been translated to address an international audience.</Pgraph><Pgraph>The chapter deals with the empirical and targeted antimicrobial therapy of complicated intra-abdominal infections. It includes recommendations for antibacterial and antifungal treatment.</Pgraph></Abstract>
    <TextBlock language="de" linked="yes" name="Indikation zur antimikrobiellen Therapie">
      <MainHeadline>Indikation zur antimikrobiellen Therapie</MainHeadline><Pgraph>Intraabdominelle Infektionen (IAI) sind h&#228;ufig. Die Diagnose akute Peritonitis ist sehr h&#228;ufig. Im Institut f&#252;r das Entgeltsystem im Krankenhaus (InEK) wurden im Jahr 2014 in 30.000 F&#228;llen eine Peritonitis im Bereich der Viszeralchirurgie (MDC 6&#8211;7) kodiert. Nationale und internationale Datenbanken zeigen, dass ca. 30&#37; aller F&#228;lle einer schweren Sepsis oder eines septischen Schocks sich auf IAI zur&#252;ckf&#252;hren lassen <TextLink reference="1"></TextLink>, <TextLink reference="2"></TextLink>, <TextLink reference="3"></TextLink>. Fast 90&#37; aller intraabdominellen Infektionen bed&#252;rfen prim&#228;r einer chirurgischen Herdsanierung (z.B. &#220;berern&#228;hrung einer Magenperforation). Der Wert einer Antibiotika-Therapie gegen&#252;ber Placebo ist dennoch auch in dieser Krankheitsgruppe gesichert <TextLink reference="4"></TextLink>. Eine initial inad&#228;quate Antibiotika-Therapie von IAI verschlechtert die Prognose der betroffenen Patienten substanziell und f&#252;hrt zu einem erheblichen finanziellen Schaden <TextLink reference="5"></TextLink>, <TextLink reference="6"></TextLink>, <TextLink reference="7"></TextLink>, <TextLink reference="8"></TextLink>.</Pgraph><Pgraph>Empfehlungen zur Antibiotika-Therapie bei intraabdominalen Infektionen werden von einer Vielzahl von prospektiv randomisierten und kontrollierten Studien abgeleitet. Da das Ziel fast aller Studien der Nachweis einer therapeutischen &#196;quivalenz ist, reichen die Ergebnisse derzeit nicht aus, um einer Substanz oder einem Substanzregime den Vorzug zu geben <TextLink reference="4"></TextLink>. Einschr&#228;nkend muss hinzugef&#252;gt werden, dass bei allen randomisierten Studien die Ein- und Ausschlusskriterien so gew&#228;hlt wurden, dass Patienten mit eher leichteren IAI (APACHE II Score ca. 6) rekrutiert wurden. Dies erschwert die Beurteilung der Wirksamkeit der angegebenen Substanzen bei lebensbedrohlichen Peritonitiden. Bei der Auswahl des geeigneten Antibiotikums sollten der individuelle Patient (z.B. Immunsuppression, Vorbehandlung), das zu erwartende Erregerspektrum, die lokale Erreger- und Resistenzstatistik, ein einfacher Applikationsmodus, eine geringe Toxizit&#228;t der Substanzen und die Kosten in die Entscheidung mit einflie&#223;en.</Pgraph><Pgraph>Komplizierte IAI liegen definitionsgem&#228;&#223; vor, wenn die Infektion das betroffene Organ &#252;berschreitet und entweder einen Abszess oder eine Peritonitis (lokal oder diffus) ausl&#246;st <TextLink reference="6"></TextLink>. Diese Differenzierung ist aber klinisch nicht eindeutig. So ist z.B. eine phlegmon&#246;se Appendizitis mit geringer Umgebungsreaktion (Letalit&#228;t unter 0,5&#37;) eine komplizierte IAI, wohingegen eine schwere <Mark2>Clostridium difficile</Mark2>-induzierte Kolitis (Letalit&#228;t bei Ribotyp 027 bis zu 40&#37;) eine unkomplizierte IAI nach der obigen Definition darstellt. Klinisch akkurater lassen sich drei verschiedene Formen der Peritonitis differenzieren, die sich kausal pathogenetisch, bez&#252;glich des Erregerspektrums und der chirurgischen und antimikrobiellen Therapie substanziell voneinander unterscheiden <TextLink reference="9"></TextLink>.</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Indications for antimicrobial treatment">
      <MainHeadline>Indications for antimicrobial treatment</MainHeadline><Pgraph>Intra-abdominal infections (IAI) are common. Diagnosis of acute peritonitis is very common. The Institute for the Hospital Remuneration System (InEK) recorded 30,000 cases of peritonitis in the area of visceral surgery (MDC 6&#8211;7) in 2014. National and international databases show that about 30&#37; of all cases of severe sepsis or septic shock are due to IAI <TextLink reference="1"></TextLink>, <TextLink reference="2"></TextLink>, <TextLink reference="3"></TextLink>. Nearly 90&#37; of all intra-abdominal infections primarily require surgical infectious source rehabilitation (e.g. hyperalimentation of a gastric perforation). Nevertheless the value of antibiotic treatment versus placebo is confirmed even in this disease group <TextLink reference="4"></TextLink>. An initially inadequate antibiotic treatment of IAI substantially worsens the prognosis of the affected patients and leads to considerable economic damage <TextLink reference="5"></TextLink>, <TextLink reference="6"></TextLink>, <TextLink reference="7"></TextLink>, <TextLink reference="8"></TextLink>. </Pgraph><Pgraph>Recommendations for antibiotic treatment in intra-abdominal infections are derived from a variety of prospective randomized and controlled trials. Since the goal of almost all studies is to demonstrate therapeutic equivalence, the current results are insufficient and don&#8217;t allow identification of a preferred substance or a substance regimen <TextLink reference="4"></TextLink>. It should be added that in all randomized studies the inclusion and exclusion criteria were chosen so that patients with a less severe IAI (APACHE II score around 6) were recruited. This complicates the assessment of the effectiveness of the specified substances in life-threatening peritonitis. When selecting an appropriate antibiotic, the individual patient (e.g. immunosuppression, prior treatment), expected pathogen spectrum, local pathogen and resistance statistics, a simple mode of application, low toxicity of the substances and costs should be considered in the decision-making process.</Pgraph><Pgraph>By definition, complicated IAIs occur when the infection moves beyond the affected organ and causes an abscess or peritonitis (local or diffuse) <TextLink reference="6"></TextLink>. However, clinically this differentiation is not clear. For example, phlegmonous appendicitis with low environmental response (lethality below 0.5&#37;) constitutes a complicated IAI, whereas severe <Mark2>Clostridium difficile</Mark2>-induced colitis (lethality up to 40&#37; in case of ribotype 027) represents an uncomplicated IAI as per the above definition. Clinically speaking, three different forms of peritonitis can be differentiated, which are causally pathogenetic, substantially different in terms of the spectrum of pathogens and surgical and antimicrobial treatment <TextLink reference="9"></TextLink>.</Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Peritonitis">
      <MainHeadline>Peritonitis</MainHeadline><SubHeadline>Prim&#228;re Peritonitis</SubHeadline><Pgraph>Die prim&#228;re (spontan bakterielle) Peritonitis (SBP) betrifft nur ca. 1&#37; aller Peritonitis-F&#228;lle. Bei der juvenilen Form handelt es sich um eine h&#228;matogen entstandene Infekti<TextGroup><PlainText>o</PlainText></TextGroup>n, die durch Streptokokken, Pneumokokken oder in selteneren F&#228;llen durch <Mark2>Haemophilus influenzae</Mark2> ausgel&#246;st wird. Beim Erwachsenen sind vorwiegend Patienten mit Aszites bei alkoholischer Leberzirrhose (ca. 70&#37;) oder einer reduzierten Abwehrlage aus anderer Ursache (ca. 30&#37;) betroffen <TextLink reference="10"></TextLink>, <TextLink reference="11"></TextLink>. Meist handelt es sich um eine Monoinfektion. In realit&#228;tsnahen Arbeiten gelingt nur in etwa 35&#37; der F&#228;lle ein Erregernachweis, wobei sich <Mark2>Escherichia coli</Mark2>, <Mark2>Klebsiella</Mark2> spp., Staphylokokken, Enterokokken oder Streptokokken, gelegentlich auch pathogene Gastroenteritis-Erreger wie <Mark2>Aeromonas</Mark2> spp. oder <Mark2>Salmonella</Mark2> spp. nachweisen lassen <TextLink reference="10"></TextLink>. Bei der prim&#228;ren Peritonitis, die im Rahmen einer Tuberkulose auftreten kann, handelt es sich um eine h&#228;matogene Streuung.</Pgraph><Pgraph>Randomisierte Studien zur Behandlung der SBP sind rar. Meist handelt es sich um retrospektive Arbeiten. Eingesetzte Substanzen waren Ceftriaxon, Cefotaxim, Ceftazidim, Ampicillin&#47;Sulbactam, Ampicillin &#43; Tobramycin sowie Amoxicillin&#47;Clavulans&#228;ure <TextLink reference="12"></TextLink>, <TextLink reference="13"></TextLink>, <TextLink reference="14"></TextLink> (Tabelle 1 <ImgLink imgNo="1" imgType="table"/>). Damit lie&#223;en sich zusammen mit der Gabe von Albumin klinische Heilungsraten von ca. 80&#37; erzielen <TextLink reference="15"></TextLink>. Bez&#252;glich der Behandlung von prim&#228;ren Peritonitiden, die durch resistente Erreger verursacht werden, siehe auch <TextGroup><PlainText>Tabelle 1 </PlainText></TextGroup><ImgLink imgNo="1" imgType="table"/>.</Pgraph><SubHeadline>Peritonitis bei CAPD</SubHeadline><Pgraph>Eine Peritonitis bei CAPD wird in der Regel durch Kontamination des Schlauch- oder Kathetersystems verursacht. H&#228;ufigste Erreger sind Koagulase-negative Staphylokokken und <Mark2>Staphylococcus aureus</Mark2>. Seltener werden <Mark2>Escherichia coli</Mark2>, Enterokokken, Streptokokken, <Mark2>Pseudomonas aeruginosa</Mark2>, Anaerobier, <Mark2>Enterobacter</Mark2> spp., oder <Mark2>Candida</Mark2>-Arten nachgewiesen <TextLink reference="16"></TextLink>. Unkomplizierte F&#228;lle k&#246;nnen lokal durch Zugabe antimikrobieller Substanzen zur Dialysierfl&#252;ssigkeit behandelt werden. Nur bei den selteneren schweren Verlaufsformen wird neben der intraperitonealen auch eine parenterale Therapie notwendig. Dabei m&#252;ssen die Besonderheiten der Antibiotika-Dosierung bei Niereninsuffizienz beachtet werden. </Pgraph><Pgraph>Zur kalkulierten Therapie wird Cefotaxim, Cefuroxim oder Ceftriaxon (in Monotherapie oder in Kombination mit Ciprofloxacin) empfohlen <TextLink reference="17"></TextLink>. Die Therapie sollte nach den Ergebnissen der mikrobiologischen Diagnostik gezielt fortgef&#252;hrt werden. Bei Nachweis von MRSA, MRSE und Enterokokken (inkl. VRE) stehen die Antibiotika gem&#228;&#223; Tabelle 2 <ImgLink imgNo="2" imgType="table"/> zur Verf&#252;gung. Wird die Infektion nicht binnen einer Woche durch die antimikrobielle Therapie beherrscht, sollte der Peritoneal-Dialyse-Katheter entfernt werden <TextLink reference="18"></TextLink>.</Pgraph><SubHeadline>Sekund&#228;re Peritonitis</SubHeadline><Pgraph>Die sekund&#228;re Peritonitis, bei der eine Perforation des Gastrointestinaltrakts vorliegt, ist mit etwa 80&#8211;90&#37; die mit Abstand h&#228;ufigste IAI. Definitionsgem&#228;&#223; muss eine chirurgische Fokuskontrolle (Herdsanierung, z.B. Appendektomie bei perforierter Appendizitis) oder interventionelle Therapie (z.B. CT-gesteuerte Drainage eines Abszesses) stattfinden. Im Sinne eines Drei-S&#228;ulen-Modells ist bei diffuser Peritonitis eine chirurgische, antimikrobielle und intensivmedizinische Therapie erforderlich <TextLink reference="18"></TextLink>. Zunehmend setzt sich die prim&#228;re Herdsanierung mit anschlie&#223;endem definitivem Verschluss des Abdomens und klinischer Verlaufskontrolle des Patienten durch <TextLink reference="19"></TextLink>. Die sekund&#228;re Peritonitis kann differenziert werden in eine ambulant erworbene (ca. 60&#37;) und eine postoperative (ca. 40&#37;) Form.</Pgraph><SubHeadline>Ambulant erworbene sekund&#228;re Peritonitis</SubHeadline><Pgraph>Bei der ambulant erworbenen sekund&#228;ren Peritonitis liegt stets eine Mischinfektion vor. Das Erregerspektrum entstammt der Flora des Magen-Darm-Trakts und ist abh&#228;ngig von der Pathogenese und der Lokalisation der Perforation bzw. Leckage. Leiterreger sind <Mark2>Escherichia coli</Mark2>, <Mark2>Bacteroides fragilis</Mark2>, Enterokokken und <Mark2>Candida</Mark2> spp. Resistente Spezies m&#252;ssen nur bei ambulant mit Antibiotika vorbehandelten Patienten und anderen speziellen Risikofaktoren (siehe Tabelle 3 <ImgLink imgNo="3" imgType="table"/>) ber&#252;cksichtigt werden. Die vorliegenden Empfehlungen ber&#252;cksichtigen die Dauer der Erkrankung und das Erregerspektrum in Abh&#228;ngigkeit von der Krankheitsursache <TextLink reference="18"></TextLink>. Zur Antibiotika-Therapie von lokal begrenzten, akuten Peritonitiden k&#246;nnen Cefuroxim, Cefotaxim, Ceftriaxon oder Ciprofloxacin, jeweils in Kombination mit Metronidazol, sowie Ampicillin&#47;Sulbactam oder Amoxicillin&#47;Clavulans&#228;ure eingesetzt werden. Piperacillin&#47;Tazobactam sowie Ertapenem, die in dieser Indikation ebenfalls zugelassen und gepr&#252;ft worden sind, sollten eher bei schwereren IAI eingesetzt werden (Tabelle 4 <ImgLink imgNo="4" imgType="table"/>). </Pgraph><Pgraph>Zur Therapie einer bereits mehr als 2&#8211;4 Stunden andauernden, diffusen Peritonitis sollten Substanzen oder Kombinationen mit einem breiten Wirkungsspektrum eingesetzt werden. Zur kalkulierten Therapie k&#246;nnen Piperacillin&#47;Tazobactam, Moxifloxacin, Tigecyclin oder Ertapenem angewendet werden. Alternativ k&#246;nnen Kombinationen von Metronidazol mit Ceftriaxon oder Cefepim verwendet werden. Die Ber&#252;cksichtigung von Enterokokken bei der Substanzauswahl wird nur im Ausnahmefall bekannter Kolonisation empfohlen <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>. </Pgraph><Pgraph>Die Hinzuf&#252;gung von Aminoglykosiden zeigte in Metaanalysen keine verbesserte Wirkung und gilt aus diesem Grund nicht mehr als Therapie der Wahl <TextLink reference="24"></TextLink>. Variable kinetische Parameter sowie die Oto- und Nephrotoxizit&#228;t erfordern zudem eine regelm&#228;&#223;ige Serumspiegel-Kontrolle.</Pgraph><SubHeadline>Postoperative, posttraumatische und postinterventionelle Peritonitis</SubHeadline><Pgraph>Die postoperative Peritonitis ist eine nosokomial erworbene sekund&#228;re Peritonitisform und wird definiert als infekti&#246;se abdominelle Komplikation, die auf einen operativen Eingriff folgt (z.B. Anastomoseninsuffizienz nach anteriorer Rektumresektion). Bei der postoperativen Peritonitis liegt im Gegensatz zur terti&#228;ren Peritonitis ein chirurgisch oder interventionell (z.B. Endo-VAC-Einlage in eine Insuffizienzh&#246;hle) behandlungsbed&#252;rftiges Krankheitsbild vor <TextLink reference="9"></TextLink>. Die meisten Patienten sind zum Zeitpunkt der Erkrankung bereits antimikrobiell vorbehandelt. Daher zeichnet sich die postoperative Peritonitis durch ein selektioniertes Erregerspektrum mit Enterokokken (inklusive VRE), gramnegativen Problemerregern (&#8222;Exte<TextGroup><PlainText>nd</PlainText></TextGroup>ed-Spektrum&#8220;-Beta-Lactamase &#91;ESBL&#93;-Bildner) und Pilzen aus. <Mark2>Pseudomonas</Mark2> spp. und Carbapenemase-Bildner werden eher selten nachgewiesen.</Pgraph><Pgraph>Als Antibiotika mit einem breiten Wirkungsspektrum k&#246;nnen Imipenem&#47;Cilastatin, Meropenem, Ertapenem, Tigecyclin und Fosfomycin eingesetzt werden <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>, wobei letzteres aufgrund der schnellen Resistenzentwicklung nicht in Monotherapie verwendet werden sollte. Ceftolozan&#47;Tazobactam steht seit kurzem als neues ESBL-wirksames Medikament zur Verf&#252;gung. In der Zulassungsstudie f&#252;r IAI, bei der Ceftolozan&#47;Tazobactam in Kombination mit Metronidazol eingesetzt wurde, wurde speziell diese Patientengruppe unter kontrollierten klinischen Bedingungen sehr erfolgreich behandelt <TextLink reference="25"></TextLink>, <TextLink reference="26"></TextLink>. Eine weitere Therapieoption in diesem Indikationsbereich stellt das ebenfalls k&#252;rzlich zugelassene Ceftazidim&#47;Avibactam in Kombination mit Metronidazol dar. Ggf. m&#252;ssen auch Pilzinfektionen in der empirischen antiinfektiven Therapie ber&#252;cksichtigt werden (siehe <TextGroup><PlainText>Tabelle 5 </PlainText></TextGroup><ImgLink imgNo="5" imgType="table"/><TextGroup><PlainText>).</PlainText></TextGroup></Pgraph><SubHeadline>Terti&#228;re Peritonitis</SubHeadline><Pgraph>Bei der terti&#228;ren Peritonitis (wie die postoperative Peritonitis eine nosokomiale Peritonitisform) persistiert die Infektion der Abdominalh&#246;hle ohne chirurgisch sanierbaren Fokus, nachdem zuvor die chirurgische Herdsanierung einer sekund&#228;ren Peritonitis abgeschlossen worden ist <TextLink reference="9"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>. Die &#220;berg&#228;nge von der sekund&#228;ren zur terti&#228;ren Peritonitis k&#246;nnen flie&#223;end sein. In diagnostisch unklaren Situationen kann nur durch eine Relaparotomie bewiesen werden, dass kein chirurgisch behandlungsbed&#252;rftiger Fokus vorliegt <TextLink reference="21"></TextLink>. Meist handelt es sich um wenig virulente Erreger, die wegen der anhaltenden Immunsuppression des betroffenen Patienten zu einer anhaltenden Infektion f&#252;hren. Diese Form der nosokomialen Peritonitis weist aufgrund der antimikrobiellen Vorbehandlung ein &#228;hnliches Erregerspektrum wie die sekund&#228;re postoperative Peritonitis auf. Es finden sich h&#228;ufig Enterokokken inkl. VRE, Staphylokokken inkl. MRSA, Enterobacteriaceae inkl. ESBL-Bildnern sowie Anaerobier. Bei der terti&#228;ren Peritonitis werden auch <Mark2>Pseudomonas</Mark2> spp. und <Mark2>Candida</Mark2> spp. h&#228;ufiger nachgewiesen <TextLink reference="9"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>. F&#252;r die Antibiotika-Therapie stehen Tigecyclin (ggf. in Kombination mit einer <Mark2>Pseudomonas</Mark2>-wirksamen Substanz) sowie Imipenem&#47;Cilastatin, Meropenem, Ceftolozan&#47;Tazobactam mit Metronidazol oder Ceftazidim&#47;Avibactam mit Metronidazol (ggf. jeweils in Kombination mit Linezolid) zur Verf&#252;gung <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="27"></TextLink>.</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Peritonitis">
      <MainHeadline>Peritonitis</MainHeadline><SubHeadline>Primary peritonitis</SubHeadline><Pgraph>Primary (spontaneous bacterial) peritonitis (SBP) affects only about 1&#37; of all peritonitis cases. The juvenile form is a hematogenous infection caused by streptococci, pneumococci or, more rarely, <Mark2>Haemophilus influenzae</Mark2>. In adults, predominantly patients with ascites through alcoholic liver cirrhosis (ca. 70&#37;) are affected or patients with a reduced immune status from another cause (ca. 30&#37;) <TextLink reference="10"></TextLink>, <TextLink reference="11"></TextLink>. Mostly it is a mono-infection. In realistic studies, it is only possible to detect pathogens in about 35&#37; of cases, with <Mark2>Escherichia coli</Mark2>, <Mark2>Klebsiella</Mark2> spp., Staphylococci, enterococci or streptococci, and occasionally pathogenic gastroenteritis pathogens such as <Mark2>Aeromonas</Mark2> spp. or <Mark2>Salmonella</Mark2> spp. being detected <TextLink reference="10"></TextLink>. Primary peritonitis, which can occur as part of tuberculosis, is spread hematogenously.</Pgraph><Pgraph>Randomized studies on the treatment of SBP are rare. Most of them are retrospective studies. Substances used were ceftriaxone, cefotaxime, ceftazidime, ampicillin&#47;sulbactam, ampicillin &#43; tobramycin and amoxycillin&#47;clavulanic acid <TextLink reference="12"></TextLink>, <TextLink reference="13"></TextLink>, <TextLink reference="14"></TextLink> (Table 1 <ImgLink imgNo="1" imgType="table"/>). Using these alongside administration of albumin, clinical cure rates of about 80&#37; were achieved <TextLink reference="15"></TextLink>. Regarding treatment of primary peritonitis caused by resistant pathogens, see also <TextGroup><PlainText>Table 1 </PlainText></TextGroup><ImgLink imgNo="1" imgType="table"/>.</Pgraph><SubHeadline>Peritonitis under CAPD</SubHeadline><Pgraph>CAPD peritonitis is usually caused by contamination of the tubing or catheter system. The most common pathogens are coagulase-negative staphylococci and <Mark2>Staphylococcus aureus</Mark2>. <Mark2>Escherichia coli</Mark2>, enterococci, streptococci, <Mark2>Pseudomonas aeruginosa</Mark2>, anaerobes, Enterobacter spp., or <Mark2>Candida</Mark2> species are detected less commonly <TextLink reference="16"></TextLink>. Uncomplicated cases can be treated locally by adding antimicrobial substances to the dialysis fluid. In addition to intraperitoneal treatment, parenteral treatment also becomes necessary in the rarer severe forms. The peculiarities of antibiotic dosing in cases of renal insufficiency must be taken into account. </Pgraph><Pgraph>Cefotaxime, cefuroxime or ceftriaxone (in monotherapy or in combination with ciprofloxacin) is recommended for calculated treatment <TextLink reference="17"></TextLink>. Once the results of microbiological diagnostics have been obtained, treatment should continue in a targeted fashion. If MRSA, MRSE and enterococci (including VRE) are detected, the antibiotics in Table 2 <ImgLink imgNo="2" imgType="table"/> are available. If the infection is not under control after one week of antimicrobial treatment, the peritoneal dialysis catheter should be removed <TextLink reference="18"></TextLink>.</Pgraph><SubHeadline>Secondary peritonitis</SubHeadline><Pgraph>Secondary peritonitis, with perforation of the gastrointestinal tract, is by far the most common IAI, at around 80&#8211;90&#37;. By definition, surgical source control must be carried out (infectious source rehabilitation, for example appendectomy for perforated appendicitis) or interventional treatment (for example CT-controlled drainage of an abscess). In terms of a three-pillar model, diffuse peritonitis requires surgical, antimicrobial and intensive care treatment <TextLink reference="18"></TextLink>. Increasingly, primary infectious source rehabilitation is followed by definitive closure of the abdomen and clinical progress monitoring of the patient <TextLink reference="19"></TextLink>. In secondary peritonitis, a distinction can be made between a community-acquired (ca. 60&#37;) and a post-operative form (ca. 40&#37;).</Pgraph><SubHeadline>Community-acquired secondary peritonitis</SubHeadline><Pgraph>In community-acquired secondary peritonitis there is always a mixed infection. The pathogen spectrum derives from the flora of the gastrointestinal tract and is dependent on the pathogenesis and the location of the perforation or leakage. Key pathogens are <Mark2>Escherichia coli</Mark2>, <Mark2>Bacteroides fragilis</Mark2>, Enterococci and <Mark2>Candida</Mark2> spp. Resistant species need only be considered in patients treated with antibiotics on an out-patient basis and other specific risk factors (see Table 3 <ImgLink imgNo="3" imgType="table"/>). The present recommendations take into account the duration of the illness and the pathogen spectrum depending on the cause of the disease <TextLink reference="18"></TextLink>. For antibiotic treatment of localized acute peritonitis, cefuroxime, cefotaxime, ceftriaxone or ciprofloxacin, in combination with metronidazole, as well as ampicillin&#47;sulbactam or amoxicillin&#47;clavulanic acid can be used. Piperacillin&#47;tazobactam and ertapenem, which have also been approved and tested in this indication, should be used in cases of more severe IAI (Table 4 <ImgLink imgNo="4" imgType="table"/>).</Pgraph><Pgraph>For the treatment of diffuse peritonitis, which persists for more than 2&#8211;4 hours, substances or combinations with a broad action spectrum should be used. Piperacillin&#47;tazobactam, moxifloxacin, tigecycline or ertapenem can be used for calculated treatment. Alternatively, combinations of metronidazole with ceftriaxone or cefepime can be used. Considering enterococci in substance selection is recommended only in the exceptional case of known colonization <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>. </Pgraph><Pgraph>Addition of aminoglycosides did result in improved effectiveness in meta-analyzes and is therefore no longer considered the treatment of choice <TextLink reference="24"></TextLink>. Variable kinetic parameters as well as ototoxicity and nephrotoxicity also require regular serum-level control.</Pgraph><SubHeadline>Post-operative, post-traumatic and post-interventional peritonitis</SubHeadline><Pgraph>Post-operative peritonitis is a nosocomially acquired secondary form of peritonitis and is defined as an infectious abdominal complication following surgery (for example anastomotic leakage following anterior rectal resection). In post-operative peritonitis, in contrast to tertiary peritonitis, a surgical or interventional (such as an endo-VAC insert into an insufficiency cavity) is a condition in need of treatment <TextLink reference="9"></TextLink>. Most patients will already have had antimicrobial treatment at the time of illness. Post-operative peritonitis is thus characterized by a selective pathogen spectrum with enterococci (including VRE), Gram-negative pathogens (&#8220;extended spectrum&#8221; beta-lactamase &#91;ESBL&#93;) and fungi. <Mark2>Pseudomonas</Mark2> spp. and carbapenemase producers are rarely detected.</Pgraph><Pgraph>Imipenem&#47;cilastatin, meropenem, ertapenem, tigecycline and fosfomycin can be used as antibiotics with a broad action spectrum <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>, the latter not being used in monotherapy because of the rapid development of resistance. Ceftolozane&#47;tazobactam has recently become available as a new ESBL-effective drug. In the approval study for IAI, which used ceftolozane&#47;tazobactam in combination with metronidazole, this group of patients in particular was treated very successfully under controlled clinical conditions <TextLink reference="25"></TextLink>, <TextLink reference="26"></TextLink>. Another treatment option in this indication range is the recently approved ceftazidime&#47;avibactam in combination with metronidazole. The possibility of fungal infections in empirical anti-infective treatment must also be considered (see Table 5 <ImgLink imgNo="5" imgType="table"/>).</Pgraph><SubHeadline>Tertiary peritonits</SubHeadline><Pgraph>In tertiary peritonitis (such as post-operative peritonitis, a nosocomial form of peritonitis), infection of the abdominal cavity persists without a focus that can be remedied surgically, after previously completed infectious source rehabilitation of secondary peritonitis <TextLink reference="9"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>. The transitions from secondary to tertiary peritonitis can be fluid. In diagnostically unclear situations, relaparotomy is the only way of proving there is no need for a surgical intervention <TextLink reference="21"></TextLink>. Most are low-virulence pathogens, which lead to a sustained infection because of the sustained immunosuppression of the affected patient. This form of nosocomial peritonitis has a similar pathogen spectrum to secondary post-operative peritonitis due to prior antimicrobial treatment. There are often enterococci including VRE, staphylococci incl. MRSA, Enterobacteriaceae incl. ESBL producers and anaerobes. In tertiary peritonitis, <Mark2>Pseudomonas</Mark2> spp. and <Mark2>Candida</Mark2> spp. are detected more frequently <TextLink reference="9"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>. For antibiotic treatment, tigecycline (possibly in combination with a <Mark2>Pseudomonas</Mark2>-active substance) as well as imipenem&#47;cilastatin, meropenem, ceftolozane&#47;tazobactam with metronidazole or ceftazidime&#47;avibactam with metronidazole (if necessary in combination with linezolid) are available <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="27"></TextLink>.</Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Nekrotisierende Pankreatitis mit infizierten Nekrosen">
      <MainHeadline>Nekrotisierende Pankreatitis mit infizierten Nekrosen</MainHeadline><Pgraph>Etwa 80&#37; aller Todesf&#228;lle bei akuter Pankreatitis werden durch septische Komplikationen verursacht. Die Translokation von Erregern aus dem Kolon in das peripankreatische Gewebe ist die h&#228;ufigste Ursache sekund&#228;r infizierter Pankreasnekrosen <TextLink reference="28"></TextLink>, <TextLink reference="29"></TextLink>, <TextLink reference="30"></TextLink>. Infizierte Pankreasnekrosen k&#246;nnen vermutet werden, wenn Fieber, Leukozytose, Anstieg der CRP-Serumkonzentration und eine unerwartete klinische Verschlechterung auftreten. Der Nachweis von Gaseinschl&#252;ssen innerhalb nekrotischen Pankreasgewebes in der Abdomen-CT gilt als beweisend f&#252;r infizierte Nekrosen <TextLink reference="31"></TextLink>. Die interventionelle Behandlung infizierter Pankreasnekrosen umfasst konservative Ma&#223;nahmen (endoskopisch gef&#252;hrte transgastrale Drainage, CT-gesteuerte Ableitung) sowie eine operative Behandlung. Gegenw&#228;rtig wird davon ausgegangen, dass der optimale Zeitpunkt f&#252;r die operative Behandlung (offen oder minimal invasiv) nach Ablauf von mehr als drei Wochen gegeben ist <TextLink reference="32"></TextLink>. Metaanalysen kamen bereits 2004 und 2006 zu der Erkenntnis, dass eine generelle Gabe von Antibiotika keinen signifikant positiven Effekt auf den Verlauf einer nekrotisierenden Pankreatitis hat, sondern eher resistente Erreger und <Mark2>Candida</Mark2> spp. selektioniert <TextLink reference="33"></TextLink>, <TextLink reference="34"></TextLink>, <TextLink reference="35"></TextLink>, <TextLink reference="36"></TextLink>, <TextLink reference="37"></TextLink>, <TextLink reference="38"></TextLink>. In der rezenten Leitlinie des American College of Gastroenterology wird empfohlen, prinzipiell keine Antibiotika-Therapie durchzuf&#252;hren <TextLink reference="39"></TextLink>. </Pgraph><Pgraph>Eine sichere Indikation f&#252;r eine Antibiotika-Therapie besteht bei nachgewiesenen infizierten Nekrosen, infizierten Pseudozysten, Abszessbildung, Cholangitis und anderen extrapankreatischen Infektionen. Die wichtigsten Erreger bei infizierten Pankreasnekrosen sind Enterobacteriaceae, Enterokokken, Staphylokokken, Anaerobier und <Mark2>Candida</Mark2> spp. Bei der Auswahl geeigneter Antibiotika ist auch die Pankreasg&#228;ngigkeit der Medikamente zu ber&#252;cksichtigen (Tabelle 5 <ImgLink imgNo="5" imgType="table"/>). Untersuchungen mit verl&#228;sslichen Daten f&#252;r eine gute Penetration in das Pankreasgewebe existieren f&#252;r Fluorchinolone (Ciprofloxacin, Moxifloxacin), Carbapeneme (Imipenem&#47;Cilastatin, Meropenem, Ertapenem), Tigecyclin und Piperacillin&#47;Tazobactam. Eine unzureichende Gewebepenetration ist f&#252;r Aminoglykoside belegt <TextLink reference="18"></TextLink>, <TextLink reference="24"></TextLink>. Alle oben genannten Substanzen k&#246;nnen in seltenen F&#228;llen selbst eine Pankreatitis ausl&#246;sen.</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Necrotizing pancreatitis with infected necroses">
      <MainHeadline>Necrotizing pancreatitis with infected necroses</MainHeadline><Pgraph>About 80&#37; of all deaths from acute pancreatitis are caused by septic complications. The translocation of pathogens from the colon into the peripancreatic tissue is the most common cause of secondarily infected pancreatic necrosis <TextLink reference="28"></TextLink>, <TextLink reference="29"></TextLink>, <TextLink reference="30"></TextLink>. Infected pancreatic necroses can be suspected if fever, leukocytosis, CRP serum elevation and unexpected clinical deterioration occur. Detection of gas inclusions within necrotic pancreatic tissue in abdominal CT is considered to be evidence of infected necroses <TextLink reference="31"></TextLink>. Interventions in cases of infected pancreatic necrosis includes conservative measures (endoscopically guided transgastric drainage, CT-guided drainage) as well as surgical intervention. Currently, it is assumed that the optimal time for surgical treatment (open or minimally invasive) is after more than three weeks <TextLink reference="32"></TextLink>. Meta-analyzes already concluded in 2004 and 2006 that a general administration of antibiotics has no significant positive effect on the course of necrotizing pancreatitis and instead leads to a selection of resistant pathogens and <Mark2>Candida</Mark2> spp. <TextLink reference="33"></TextLink>, <TextLink reference="34"></TextLink>, <TextLink reference="35"></TextLink>, <TextLink reference="36"></TextLink>, <TextLink reference="37"></TextLink>, <TextLink reference="38"></TextLink>. The recent guideline of the American College of Gastroenterology recommends that in principle no antibiotic treatment should be carried out <TextLink reference="39"></TextLink>. </Pgraph><Pgraph>A safe indication for antibiotic treatment is proven infected necrosis, infected pseudocysts, abscess formation, cholangitis, and other extra-pancreatic infections. The most important pathogens in infected pancreatic necroses are Enterobacteriaceae, enterococci, staphylococci, anaerobes and <Mark2>Candida</Mark2> spp. When selecting appropriate antibiotics, pancreatic mobility of the drugs should also be considered (Table 5 <ImgLink imgNo="5" imgType="table"/>). Studies with reliable data for good penetration into the pancreatic tissue exist for fluoroquinolones (ciprofloxacin, moxifloxacin), carbapenems (imipenem&#47;cilastatin, meropenem, ertapenem), tigecycline and piperacillin&#47;tazobactam. Inadequate tissue penetration has been demonstrated for aminoglycosides <TextLink reference="18"></TextLink>, <TextLink reference="24"></TextLink>. All the above-mentioned substances can in rare cases cause pancreatitis.</Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Invasive intraabdominelle Mykosen">
      <MainHeadline>Invasive intraabdominelle Mykosen</MainHeadline><Pgraph>Die meisten intraabdominellen invasiven Mykosen (IIM) werden durch <Mark2>Candida</Mark2> spp. ausgel&#246;st. Insgesamt werden bis zu 18&#37; aller schweren Sepsis-F&#228;lle in Deutschland auf <Mark2>Candida</Mark2> spp. zur&#252;ckgef&#252;hrt <TextLink reference="3"></TextLink>. Der einmalige Nachweis im intraoperativ gewonnenen Material bei einer ambulant erworbenen sekund&#228;ren Peritonitis (z.B. perforiertes Magenulcus) bedarf beim postoperativ stabilen und immunkompetenten Patienten keiner antimykotischen Therapie. Risikokollektive aus chirurgischer Sicht sind Patienten mit einer schweren postoperativen (z.B. Nahtinsuffizienz nach &#214;sophagojejunostomie) oder terti&#228;ren Peritonitis <TextLink reference="40"></TextLink>, <TextLink reference="41"></TextLink>, <TextLink reference="42"></TextLink>, <TextLink reference="43"></TextLink>, <TextLink reference="44"></TextLink>, <TextLink reference="45"></TextLink>, <TextLink reference="46"></TextLink>. Die prophylaktische Gabe von Fluconazol hat zwar zu einer Reduktion von <Mark2>Candida</Mark2>-Infektionen gef&#252;hrt, die Letalit&#228;t aber nicht ver&#228;ndert und wird daher nicht empfohlen <TextLink reference="40"></TextLink>, <TextLink reference="47"></TextLink>. </Pgraph><Pgraph>Die Anzahl von <Mark2>Candida</Mark2>-St&#228;mmen mit eingeschr&#228;nkter Empfindlichkeit gegen&#252;ber Fluconazol liegt in Deutschland bei ca. 40&#37; <TextLink reference="27"></TextLink>, <TextLink reference="40"></TextLink>. Daher wird vor dem Hintergrund der Ergebnisse neuerer Multicenterstudien die Anwendung eines Echinocandins (Anidulafungin, Caspofungin, Micafungin) pr&#228;feriert, wenn der Patient instabil ist oder wenn k&#252;rzlich eine Azol-Therapie oder -Prophylaxe durchgef&#252;hrt worden ist. Alternativ kann bei Empfindlichkeit gegen&#252;ber Azolen und Kreislaufstabilit&#228;t der Einsatz von Fluconazol und, bei Verf&#252;gbarkeit eines therapeutischen Drug Monitorings, auch der von Voriconazol erwogen werden. Eine Initialtherapie mit (liposomalem) Amphotericin B ist unter individueller Abw&#228;gung der potenteillen Nebenwirkungen (glomerul&#228;re und tubul&#228;re Nephrotoxiziz&#228;t) ebenfalls eine Option. Zu Isavuconazol oder Posaconazol liegen keine Studiendaten zur Behandlung invasiver <Mark2>Candida</Mark2>-Infektionen vor (kein Grading). Die Therapiedauer betr&#228;gt mindestens 14 Tage <TextLink reference="40"></TextLink>, <TextLink reference="47"></TextLink>. Insgesamt liegen speziell bei intraabdominellen Mykosen wenige kontrollierte Daten vor. Die publizierten Kollektive sind bez&#252;glich wesentlicher Basisparameter sehr heterogen <TextLink reference="48"></TextLink>. Die Prognose einer IIM ist bei verz&#246;gerter Therapie schlecht <TextLink reference="40"></TextLink>, <TextLink reference="41"></TextLink>, <TextLink reference="42"></TextLink>, <TextLink reference="43"></TextLink>, <TextLink reference="44"></TextLink>, <TextLink reference="45"></TextLink>, <TextLink reference="46"></TextLink>, <TextLink reference="47"></TextLink>, <TextLink reference="48"></TextLink>.</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Invasive intra-abdominal mycoses">
      <MainHeadline>Invasive intra-abdominal mycoses</MainHeadline><Pgraph>Most intra-abdominal invasive mycoses (IIM) are triggered by <Mark2>Candida</Mark2> spp. In total, up to 18&#37; of all severe sepsis cases in Germany were found to be due to <Mark2>Candida</Mark2> spp. <TextLink reference="3"></TextLink>. One-off detection in surgically-obtained material in cases of community-acquired secondary peritonitis (for example perforated gastric ulcer) does not require anti-fungal treatment in the post-operative care of stable and immunocompetent patients. From a surgical point of view, at-risk groups are patients with severe post-operative (for instance suture insufficiency following esophagojejunostomy) or tertiary peritonitis <TextLink reference="40"></TextLink>, <TextLink reference="41"></TextLink>, <TextLink reference="42"></TextLink>, <TextLink reference="43"></TextLink>, <TextLink reference="44"></TextLink>, <TextLink reference="45"></TextLink>, <TextLink reference="46"></TextLink>. Although the prophylactic administration of fluconazole has led to a reduction of Candida infections, it does not alter the lethality and is therefore not recommended <TextLink reference="40"></TextLink>, <TextLink reference="47"></TextLink>. </Pgraph><Pgraph>The number of Candida strains in Germany with limited sensitivity to fluconazole is approximately 40&#37; <TextLink reference="27"></TextLink>, <TextLink reference="40"></TextLink>. Therefore, against the backdrop of the results of recent multi-center studies, the use of an echinocandin (anidulafungin, caspofungin, micafungin) is preferred when the patient is unstable or when azole therapy or prophylaxis has recently been carried out. Alternatively, in cases of sensitivity to azoles and cardiovascular stability, the use of fluconazole and, if therapeutic drug monitoring is available, that of voriconazole may also be considered. Initial therapy with (liposomal) amphotericin B is also an option, taking into account the potential side effects (glomerular and tubular nephrotoxicity). There are no data available on isavuconazole or posaconazole in the treatment of invasive <Mark2>Candida</Mark2> infections (no grading). The duration of treatment is at least 14 days <TextLink reference="40"></TextLink>, <TextLink reference="47"></TextLink>. Overall, there are few controlled data, especially for intra-abdominal mycoses. The published collectives are very heterogeneous as regards basic parameters <TextLink reference="48"></TextLink>. Prognosis of IIM is poor in delayed treatment <TextLink reference="40"></TextLink>, <TextLink reference="41"></TextLink>, <TextLink reference="42"></TextLink>, <TextLink reference="43"></TextLink>, <TextLink reference="44"></TextLink>, <TextLink reference="45"></TextLink>, <TextLink reference="46"></TextLink>, <TextLink reference="47"></TextLink>, <TextLink reference="48"></TextLink>.</Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Schwer therapierbare und multiresistente Erreger (MRE)">
      <MainHeadline>Schwer therapierbare und multiresistente Erreger (MRE)</MainHeadline><Pgraph>W&#228;hrend Mitte der 90er Jahre noch 95&#8211;97&#37; aller bei IAI nachgewiesenen bakteriellen Erreger gegen&#252;ber h&#228;ufig verwendeten Antibiotika (z.B. Cefotaxim oder Ciprofloxacin &#43; Metronidazol) sensibel waren, hat in den letzten Jahren, insbesondere bei der postoperativen Peritonitis sowie der terti&#228;ren Peritonitis, der Anteil resistenter St&#228;mme (MRSA, VRE, ESBL-Bildner, (multi)resistente <Mark2>Pseudomonas</Mark2> spp.) weltweit deutlich zugenommen <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>, <TextLink reference="27"></TextLink>, <TextLink reference="49"></TextLink>, <TextLink reference="50"></TextLink>, <TextLink reference="51"></TextLink>, <TextLink reference="52"></TextLink>, <TextLink reference="53"></TextLink>. Gerade bei den von resistenten Erregern verursachten, lebensbedrohlichen Krankheitsbildern ist es wichtig, mit der initialen Antibiotika-Therapie das zu erwartende Erregerspektrum m&#246;glichst vollst&#228;ndig zu erfassen. Findet sich nach der mikrobiologischen Untersuchung kein Nachweis von resistenten Erregern, sollte eine Deeskalation der Therapie erfolgen. </Pgraph><Pgraph>Eine &#220;bersicht der resistenten Erreger und ihrer H&#228;ufigkeit bei intraabdominellen Infektionen, die zugleich als Entscheidungsmatrix f&#252;r eine empirische Therapie genutzt werden kann, gibt Tabelle 6 <ImgLink imgNo="6" imgType="table"/> modifiziert wider <TextLink reference="23"></TextLink>. Die folgenden Abschnitte sind resistenten Erregern gewidmet, die wegen ihrer besonderen Bedeutung einer gesonderten Betrachtung bed&#252;rfen. Hinweise zur kalkulierten Therapie bei IAI durch diese Erreger finden sich in Tabelle 2 <ImgLink imgNo="2" imgType="table"/>.</Pgraph><SubHeadline>MRSA</SubHeadline><Pgraph>Eine Infektion der Abdominalh&#246;hle mit MRSA ist beim immunkompetenten Patienten selten. Meist handelt es sich um eine MRSA-Kolonisation bei offenem Abdomen, z.B. nach abdominellem Kompartmentsyndrom. Eine Indikation zur Antibiotika-Therapie ergibt sich bei nicht immunsupprimierten Patienten, wenn lokale und systemische Infektionszeichen sowie ein persistierender Nachweis vorliegen. Bei immunsupprimierten Patienten nach Transplantation sollte jeder Nachweis von MRSA als behandlungsbed&#252;rftig erachtet werden. Tigecyclin besitzt als einziges MRSA-wirksames Antibiotikum eine Zulassung zur Behandlung von IAI <TextLink reference="54"></TextLink> und erfasst auch das zu erwartende gramnegative und anaerobe Erregerspektrum. Vancomycin zeichnet sich durch eine vergleichsweise schlechte Penetration in das abdominelle Kompartiment aus. F&#252;r Linezolid liegen klinische Daten &#252;ber die Behandlung von IAI vor <TextLink reference="55"></TextLink>, <TextLink reference="56"></TextLink>. Linezolid, Daptomycin und Vancomycin sollten mit einem Antibiotikum kombiniert werden, das gegen gramnegative Erreger wirksam ist <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>. </Pgraph><SubHeadline>Enterokokken inklusive VRE</SubHeadline><Pgraph>Die Rolle der Enterokokken als prim&#228;rer pathogener Erreger in einer polymikrobiellen IAI wird kontrovers beurteilt <TextLink reference="57"></TextLink>, <TextLink reference="58"></TextLink>. Enterokokken der Spezies <Mark2>Enterococcus faecalis</Mark2> und <Mark2>Enterococcus faecium</Mark2> sind wichtige Erreger nosokomialer Infektionen. Sie stehen in Deutschland hinsichtlich ihrer H&#228;ufigkeit an dritter Stelle <TextLink reference="27"></TextLink>. <Mark2>Enterococcus faecium</Mark2> verf&#252;gt &#252;ber ein breites Spektrum an intrinsischen und erworbenen Antibiotikaresistenzen und hat dadurch zunehmende Bedeutung als Erreger von nosokomialen Infektionen bei immunsupprimierten und intensivmedizinisch versorgten multimorbiden Patienten erlangt <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>, <TextLink reference="27"></TextLink>. Insbesondere bei Patienten mit postoperativer Peritonitis, terti&#228;rer Peritonitis, schwerer abdomineller Sepsis sowie Antibiotika-Vorbehandlung oder bei Endokarditis-gef&#228;hrdeten Patienten (Peritonitis und Herzklappenersatz) sollten Enterokokken-wirksame Antibiotika eingesetzt werden <TextLink reference="18"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>. Im europ&#228;ischen Vergleich findet sich in Deutschland ein vergleichsweise hoher Anteil an VRE<Mark2>nterococcus faecium</Mark2> <TextLink reference="27"></TextLink>. Nur wenige Antibiotika sind gegen&#252;ber VRE<Mark2>nterococcus faecium</Mark2> wirksam, n&#228;mlich Tigecyclin <TextLink reference="59"></TextLink>, Linezolid <TextLink reference="60"></TextLink>, und z.T. auch Daptomycin (keine kontrollierten klinischen Daten). Kasuistiken &#252;ber Linezolid- bzw. Tigecyclin-resistente Enterokokken-St&#228;mme liegen vor, z.B. <TextLink reference="61"></TextLink>.</Pgraph><SubHeadline>Resistente Enterobacteriaceae </SubHeadline><Pgraph>ESBL-bildende Enterobacteriaceae k&#246;nnen viele der zur kalkulierten Initialtherapie eingesetzten Penicilline und Cephalosporine inaktivieren. H&#228;ufig findet sich auch eine Resistenz gegen&#252;ber den Beta-Lactamase-Inhibitor-ge<TextGroup><PlainText>s</PlainText></TextGroup>ch&#252;tzten Kombinationen Amoxicillin&#47;Clavulans&#228;ure, Ampicillin&#47;Sulbactam und (seltener) Piperacillin&#47;Tazobactam sowie eine Parallelresistenz gegen&#252;ber weiteren Antibiotika-Klassen, einschlie&#223;lich Fluorchinolonen und Aminoglykosiden <TextLink reference="62"></TextLink>, <TextLink reference="63"></TextLink>. Es ist davon auszugehen, dass es mittlerweile weltweit ein riesiges Reservoir an Personen gibt, die mit ESBL-bildenden Erregern kolonisiert sind <TextLink reference="27"></TextLink>, <TextLink reference="63"></TextLink> und dies kein nosokomiales Ph&#228;nomen ist. Erschwerend kommt hinzu, dass der Anteil ESBL-bil<TextGroup><PlainText>d</PlainText></TextGroup>ender Bakterien auch bei Tieren deutlich zunimmt und die Erreger auch auf Lebensmitteln und im Wasser nachgewiesen werden. In der PEG-Resistenzstudie 2013 betrug der Anteil von Isolaten mit dem &#8222;Extended-Spektrum&#8220;-Beta-Lactamase (ESBL)-Ph&#228;notyp bei <Mark2>Escherichia coli</Mark2> 15,4&#37; und bei <Mark2>Klebsiella</Mark2> pneumoniae 17,8&#37;. Weiterhin hat auch der Anteil von Carbapenemasen-bildenden Enterobakteraiceae zugenommen <TextLink reference="27"></TextLink>. Eine weiterf&#252;hrende Bearbeitung dieses wichtigen Themenkomplexes findet sich in Kapitel 16 <TextLink reference="64"></TextLink>.</Pgraph><Pgraph>Als Therapie der Wahl werden Carbapeneme, Fosfomycin (keine Monotherapie wegen der Gefahr der schnellen Resistenzentwicklung) und Tigecyclin empfohlen <TextLink reference="18"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>, <TextLink reference="27"></TextLink>. Letzteres wurde unter &#8222;real-life&#8220; Bedingungen in einer europaweiten Studie bei ca. 75&#37; der Patienten mit IAI klinisch erfolgreich eingesetzt <TextLink reference="59"></TextLink>. Ceftolozan&#47;Tazobactam steht seit kurzem als neues ESBL-wirksames Medikament zur Verf&#252;gung. In der Zulassungsstudie f&#252;r IAI wurde speziell die Patientengruppe der ESBL-verursachten IAI unter kontrollierten Bedingungen erfolgreich behandelt <TextLink reference="25"></TextLink>, <TextLink reference="26"></TextLink>. Des Weiteren kommt der Einsatz des ebenfalls k&#252;rzlich f&#252;r dieses Indikationsgebiet zugelassene Ceftazidim&#47;Avibactam in Betracht <TextLink reference="65"></TextLink>.</Pgraph><Pgraph>Mittlerweile sind Enterobacteriaceae auch in der Lage, Carbapenemasen (KPC, NDM) zu produzieren, wodurch Carbapenem-Antibiotika unwirksam werden. Carbapenemasen sind am h&#228;ufigsten bei <Mark2>Klebsiella pneumoniae</Mark2> anzutreffen (<Mark2>Klebsiella-pneumoniae</Mark2>-Carbapenemasen, KPC), k&#246;nnen aber auch bei <Mark2>Escherichia coli</Mark2> und anderen gramnegativen Erregern, wie z.B. <Mark2>Acinetobacter</Mark2> spp., vorkommen. F&#252;r eine gezielte ad&#228;quate Therapie stehen hier nur noch wenige Optionen zur Verf&#252;gung. Empfohlen werden Kombinations-Antibiotikaregime, die Tigecyclin, Meropenem und Colistin beinhalten. Als neue, in diesem Indikationsbereich zugelassene Substanz kommt auch der Einsatz von Ceftazidim&#47;Avibactam in Betracht <TextLink reference="66"></TextLink>, <TextLink reference="67"></TextLink>, <TextLink reference="68"></TextLink>.</Pgraph><SubHeadline>Pseudomonas spp., Acinetobacter spp.</SubHeadline><Pgraph><Mark2>Pseudomonas</Mark2> spp. werden in ca. 8&#8211;15&#37; aller IAI nachgewiesen, wobei der Anteil kausal pathogenetisch relevanter St&#228;mme deutlich niedriger liegen d&#252;rfte <TextLink reference="9"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="69"></TextLink>. Resistenzen gegen 3 oder 4 der zur Verf&#252;gung stehenden Antibiotikaklassen (3MRGN, 4MRGN) werden auch bei IAI immer h&#228;ufiger beobachtet. Gleiches gilt f&#252;r Carbapenem-resistente Acinetobacter spp., wobei sich hier in Einzelf&#228;llen noch Tigecyclin als wirksam erweisen kann. Als Besonderheit ist hier gelegentlich auch Sulbactam in Monotherapie wirksam (Testergebnis beachten).</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Difficult to treat and multidrug-resistant pathogens (MDROs)">
      <MainHeadline>Difficult to treat and multidrug- resistant pathogens (MDROs)</MainHeadline><Pgraph>While in the mid-1990s 95&#8211;97&#37; of all bacterial pathogens detected in IAI were still sensitive to common antibiotics (such as cefotaxime or ciprofloxacin &#43; metronidazole), in recent years, especially in post-operative and tertiary peritonitis, the proportion of more resistant strains (MRSA, VRE, ESBL producer, (multi)resistant <Mark2>Pseudomonas</Mark2> spp.) have increased significantly worldwide <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>, <TextLink reference="27"></TextLink>, <TextLink reference="49"></TextLink>, <TextLink reference="50"></TextLink>, <TextLink reference="51"></TextLink>, <TextLink reference="52"></TextLink>, <TextLink reference="53"></TextLink>. It is important to cover the expected pathogen spectrum as completely as possible with the initial antibiotic treatment, particularl<TextGroup><PlainText>y in</PlainText></TextGroup> the case of life-threatening clinical scenarios caused by resistant pathogens. If no evidence of resistant pathogens is found after microbiological examination, treatment should be de-escalated. </Pgraph><Pgraph>An overview of the resistant pathogens and their frequency in intra-abdominal infections, which can also be used as a decision matrix for empirical treatment, is given in Table 6 <ImgLink imgNo="6" imgType="table"/> in modified form <TextLink reference="23"></TextLink>. The following sections deal with resistant pathogens, which require special considerations because of their particular importance. Information on the calculated treatment of IAI caused by these pathogens can be found in Table 2 <ImgLink imgNo="3" imgType="table"/>.</Pgraph><SubHeadline>MRSA</SubHeadline><Pgraph>An infection of the abdominal cavity with MRSA is rare in immunocompetent patients. It is usually MRSA colonization due to an open abdomen, for example after abdominal compartment syndrome. In non-immunosuppressed patients an indication for antibiotic treatment results if local and systemic signs of infection and persistent evidence are present. In immunosuppressed patients after transplantation, any detection of MRSA should be considered as requiring treatment. Tigecycline is the only MRSA-active antibiotic approved for the treatment of IAI <TextLink reference="54"></TextLink> and also covers the expected Gram-negative and anaerobic pathogen spectrum. Vancomycin is characterized by a relatively poor penetration into the abdominal compartment. There is clinical data on linezolid for the treatment of IAI <TextLink reference="55"></TextLink>, <TextLink reference="56"></TextLink>. Linezolid, daptomycin and vancomycin should be combined with an antibiotic effective against Gram-negative pathogens <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>. </Pgraph><SubHeadline>Enterococci including VRE</SubHeadline><Pgraph>The role of enterococci as the primary pathogen in a polymicrobial IAI is controversial <TextLink reference="57"></TextLink>, <TextLink reference="58"></TextLink>. Enterococci of the species <Mark2>Enterococcus faecalis</Mark2> and <Mark2>Enterococcus faecium</Mark2> are important pathogens of nosocomial infections. They rank third in Germany in terms of frequency <TextLink reference="27"></TextLink>. <Mark2>Enterococcus faecium</Mark2> has a broad spectrum of intrinsic and acquired antibiotic resistance and has become increasingly important as a pathogen for nosocomial infections in immunosuppressed and intensive care multi-morbid patients <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>, <TextLink reference="27"></TextLink>. Enterococci-effective antibiotics should be used particularly in patients with postoperative peritonitis, tertiary peritonitis, severe abdominal sepsis and prior antibiotic treatment or endocarditis-prone patients (peritonitis and heart valve replacement), <TextLink reference="18"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>. Compared to the rest of Europe, a comparatively high proportion of VRE<Mark2>nterococcus faecium</Mark2> is found in Germany <TextLink reference="27"></TextLink>. Only a few antibiotics are active against VRE<Mark2>nterococcus faecium</Mark2>. These are tigecycline <TextLink reference="59"></TextLink>, linezolid <TextLink reference="60"></TextLink>, and also to some extent daptomycin (no controlled clinical data). Cases of linezolid or tigecycline-resistant enterococci strains have been documented, for instance <TextLink reference="61"></TextLink>.</Pgraph><SubHeadline>Resistant Enterobacteriaceae </SubHeadline><Pgraph>ESBL-producing Enterobacteriaceae can inactivate many of the penicillins and cephalosporins used for calculated initial treatment. In many cases there is also resistance to the beta-lactamase inhibitor-protected combinations amoxicillin&#47;clavulanic acid, ampicillin&#47;sulbactam, and (more rarely) piperacillin&#47;tazobactam, as well as parallel resistance to other antibiotic classes, including fluoroquinolones and aminoglycosides <TextLink reference="62"></TextLink>, <TextLink reference="63"></TextLink>. It can be assumed that there is now a huge reservoir of people worldwide who are colonized with ESBL-producing pathogens <TextLink reference="27"></TextLink>, <TextLink reference="63"></TextLink> and that this is not a nosocomial phenomenon. To make matters worse, the proportion of ESBL-producing bacteria is also increasing significantly in animals and the pathogens are also detected on food and in water. In the PEG resistance study in 2013, the proportion of isolates with the extended spectrum beta-lactamase (ESBL) phenotype was 15.4&#37; for <Mark2>Escherichia coli</Mark2> and 17.8&#37; for <Mark2>Klebsiella pneumoniae</Mark2>. Furthermore, the proportion of carbapenemase-producing Enterobacteriaceae has also increased <TextLink reference="27"></TextLink>. Further work on this important topic can be found in chapter 16 <TextLink reference="64"></TextLink>.</Pgraph><Pgraph>Carbapenems, fosfomycin (no monotherapy because of the risk of rapid development of resistance) and tigecycline are recommended as treatment of choice  <TextLink reference="18"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>, <TextLink reference="27"></TextLink>. The latter was used clinically in approximately 75&#37; of patients with IAI under real-life conditions in a Europe-wide study <TextLink reference="59"></TextLink>. Ceftolozan&#47;tazobactam has recently become available as a new ESBL-effective drug. In the IAI licensing study, the ESBL-induced IAI group of patients was treated successfully under controlled conditions <TextLink reference="25"></TextLink>, <TextLink reference="26"></TextLink>. Furthermore, the use of ceftazidime&#47;avibactam, which was also recently approved for this type of indication, can also be considered <TextLink reference="65"></TextLink>.</Pgraph><Pgraph>By now, Enterobacteriaceae are also able to produce carbapenemases (KPC, NDM), thereby rendering carbapenem antibiotics ineffective. Occurrences of carbapenemases are most commonly found in <Mark2>Klebsiella pneumoniae</Mark2> (<Mark2>Klebsiella pneumoniae</Mark2> carbapenemases, KPC) but can also be found in <Mark2>Escherichia coli</Mark2> and other Gram-negative pathogens, for example <Mark2>Acinetobacter</Mark2> spp. Only a few options remain for adequate targeted treatment. Combination antibiotic regimens containing tigecycline, meropenem and colistin are recommended. The use of ceftazidime&#47;avibactam, a new substance approved for this type of indication, can also be taken into consideration <TextLink reference="66"></TextLink>, <TextLink reference="67"></TextLink>, <TextLink reference="68"></TextLink>.</Pgraph><SubHeadline>Pseudomonas spp., Acinetobacter spp.</SubHeadline><Pgraph>Pseudomonas spp. are detected in about 8&#8211;15&#37; of all IAI, although the proportion of causally pathogenetically relevant strains is likely to be much lower <TextLink reference="9"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="69"></TextLink>. Resistance to 3 or 4 of the available antibiotic classes (3MRGN, 4MRGN) is also being observed more frequently in IAI. The same applies to carbapenem-resistant <Mark2>Acinetobacter</Mark2> spp., where in some cases tigecycline can still prove to be effective. As a special feature here occasionally sulbactam in monotherapy is also effective (note test result).</Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Dauer der empirischen Antibiotika-Therapie intraabdomineller Infektionen">
      <MainHeadline>Dauer der empirischen Antibiotika-Therapie intraabdomineller Infektionen</MainHeadline><Pgraph>Sehr h&#228;ufig m&#252;ssen Kliniker mit der antimikrobiellen Therapie empirisch beginnen, d.h. bevor ein Erregernachweis erfolgt ist Empfehlungen f&#252;r die empirische Therapie von IAI nach einem Stufenmodell finden sich in <TextGroup><PlainText>Tabelle 4 </PlainText></TextGroup><ImgLink imgNo="4" imgType="table"/>. Je lokaler die Infektion begrenzt ist, desto k&#252;rzer kann die Therapiedauer sein. Zur Therapie ambulant erworbener lokaler Peritonitiden ohne Risikofaktoren (Stufe 1: Therapiedauer 1 Tag; Stufe 2: Therapiedauer 3 Tage) sollten Substanzen wie Cephalosporine der Gruppen 2 oder 3a (z.B. Cefuroxim, Cefotaxim) oder Fluorchinolone (z.B. Ciprofloxacin), jeweils in Kombination mit Metronidazol, zum Einsatz kommen. Alternativ k&#246;nnen auch Aminopenicilline in Kombination mit einem Beta-Lactamase-Inhibitor (z.B. Amoxicillin&#47;Clavulans&#228;ure) eingesetzt werden (siehe Tabelle 3 <ImgLink imgNo="3" imgType="table"/>) <TextLink reference="18"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>. </Pgraph><Pgraph>Mit Anstieg der lokalen und systemischen Ausbreitung der Infektion sowie bei m&#246;glichem Vorliegen von Risikofaktoren (siehe Tabelle 3 <ImgLink imgNo="3" imgType="table"/>) kommen Piperacillin&#47;Tazobactam, Ertapenem und eingeschr&#228;nkt auch Moxifloxacin in Frage (Stufe 3: Therapiedauer 5 Tage). Bei fortgeschrittener lokaler Peritonitis ist bei ad&#228;quater Herdsanierung ein Behandlungszeitraum von 4&#8211;5 Tagen nicht schlechter als eine 8- bis 10-t&#228;gige Antibiotika-Therapie, wie unl&#228;ngst im Rahmen einer gro&#223;en randomisierten, doppelblinden Studie gezeigt wurde <TextLink reference="70"></TextLink>. Bei nosokomialen Peritonitiden und bei h&#228;modynamisch instabilen Patienten im septischen Schock ist die Wahrscheinlichkeit allerdings sehr hoch, dass resistente Erreger die Infektion mitausl&#246;sen. Hier sollten lediglich Meropenem, Imipenem, Tigecyclin (ggf. in Kombination mit einer Pseudomonas-wirksamen Substanz) oder auch Ceftolozan&#47;Tazobactam &#43; Metronidazol bzw. Ceftazidim&#47;Avivactam &#43; Metronidazol eingesetzt werden (Stufe 4: 7&#8211;10 Tage Therapiedauer). Stellt sich nach 7&#8211;10 Tagen kein Behandlungserfolg ein, ist ein Absetzen der antimikrobiellen Therapie und eine anschlie&#223;ende erneute Probengewinnung einer unklaren, resistente Erreger selektionierenden Fortsetzung der m&#246;glicherweise toxischen Therapie vorzuziehen.</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Duration of empirical antibiotic treatment of intra-abdominal infections">
      <MainHeadline>Duration of empirical antibiotic treatment of intra-abdominal infections</MainHeadline><Pgraph>Very often clinicians must begin antimicrobial treatment empirically, i.e. prior to pathogen detection. Recommendations for the empirical treatment of IAI according to a level model can be found in Table 4 <ImgLink imgNo="4" imgType="table"/>. The more local the infection is, the shorter the duration of treatment can be. For the treatment of community-acquired local peritonitis without risk factors (level 1: treatment duration 1 day; level 2: treatment duration 3 days), substances such as cephalosporins of groups 2 or 3a (for example cefuroxime, cefotaxime) or fluoroquinolones (for example ciprofloxacin), in each case in combination with metronidazole, should be used. Alternatively, aminopenicillins may be used in combination with a beta-lactamase inhibitor (for example amoxycillin&#47;clavulanic acid) (see <TextGroup><PlainText>Table 3 </PlainText></TextGroup><ImgLink imgNo="3" imgType="table"/>) <TextLink reference="18"></TextLink>, <TextLink reference="20"></TextLink>, <TextLink reference="21"></TextLink>, <TextLink reference="22"></TextLink>, <TextLink reference="23"></TextLink>. </Pgraph><Pgraph>With increased local and systemic spread of the infection and possible risk factors (see Table 3 <ImgLink imgNo="3" imgType="table"/>), piperacillin&#47;tazobactam, ertapenem and, to a lesser extent, moxifloxacin may be considered (level 3: treatment duration 5 days). For advanced localized peritonitis, a <TextGroup><PlainText>4&#8211;5 day</PlainText></TextGroup> treatment period is not inferior to an 8 to 10-day course of antibiotics with adequate infectious source rehabilitation, as recently demonstrated in a large randomized, double-blind study <TextLink reference="70"></TextLink>. However, in nosocomial peritonitis and hemodynamically unstable patients in septic shock, the likelihood is high that resistant pathogens will co-trigger the infection. Only meropenem, imipenem, tigecycline (possibly in combination with a Pseudomonas-active substance) or ceftolozane&#47;tazobactam &#43; metronidazole or ceftazidime&#47;avibactam &#43; metronidazole should be used (level 4: treatment duration 7&#8211;10 days). If no treatment success occurs after 7&#8211;10 days, discontinuation of antimicrobial treatment and taking new samples is preferable to continuation of an unclear, resistant pathogen-selecting, potentially toxic therapy.</Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Anmerkung">
      <MainHeadline>Anmerkung</MainHeadline><Pgraph>Dies ist das siebte Kapitel der von der Paul-Ehrlich-Gesellschaft f&#252;r Chemotherapie e.V. (PEG) herausgegebenen S2k Leitlinie &#8222;Kalkulierte parenterale Initialtherapie bakterieller Erkrankungen bei Erwachsenen &#8211; Update 2018&#8220; in der 2. aktualisierten Fassung.</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Note">
      <MainHeadline>Note</MainHeadline><Pgraph>This is the seventh chapter of the guideline &#8220;Calculated initial parenteral treatment of bacterial infections in adults &#8211; update 2018&#8221; in the 2<Superscript>nd</Superscript> updated version. The German guideline by the Paul-Ehrlich-Gesellschaft f&#252;r Chemothe<TextGroup><PlainText>ra</PlainText></TextGroup>pie e.V. (PEG) has been translated to address an international audience.</Pgraph></TextBlock>
    <TextBlock language="de" linked="yes" name="Interessenkonflikte">
      <MainHeadline>Interessenkonflikte</MainHeadline><Pgraph>Die Autoren erkl&#228;ren, dass sie keine Interessenkonflikte in Zusammenhang mit diesem Artikel haben.</Pgraph></TextBlock>
    <TextBlock language="en" linked="yes" name="Competing interests">
      <MainHeadline>Competing interests</MainHeadline><Pgraph>The authors declare that they have no competing interests.</Pgraph></TextBlock>
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          <Caption language="de"><Pgraph><Mark1>Tabelle 1: Therapieempfehlungen zur Initialtherapie der verschiedenen Formen der prim&#228;ren Peritonitis</Mark1></Pgraph></Caption>
          <Caption language="en"><Pgraph><Mark1>Table 1: Therapy recommendations for the initial treatment of different forms of primary peritonitis</Mark1></Pgraph></Caption>
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          <MediaID language="de">3de</MediaID>
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          <Caption language="de"><Pgraph><Mark1>Tabelle 3: Evidenzbasierte Risikofaktoren f&#252;r das Vorhandensein multiresistenter Erreger (MRE) bei Bauchrauminfektionen</Mark1></Pgraph></Caption>
          <Caption language="en"><Pgraph><Mark1>Table 3: Evidence-based risk factors for the presence of multidrug-resistant pathogens (MDROs) in abdominal infections</Mark1></Pgraph></Caption>
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          <MediaNo>4</MediaNo>
          <MediaID language="de">4de</MediaID>
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          <Caption language="de"><Pgraph><Mark1>Tabelle 4: Empfehlungen zur Initialtherapie der verschiedenen Formen der sekund&#228;ren und terti&#228;ren Peritonitis</Mark1></Pgraph></Caption>
          <Caption language="en"><Pgraph><Mark1>Table 4: Recommendations for the initial treatment of the different forms of secondary and tertiary peritonitis</Mark1></Pgraph></Caption>
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          <MediaNo>5</MediaNo>
          <MediaID language="de">5de</MediaID>
          <MediaID language="en">5en</MediaID>
          <Caption language="de"><Pgraph><Mark1>Tabelle 5: Kalkulierte Antibiotika-Therapie bei nekrotisierender Pankreatitis und intraabdominellen Mykosen</Mark1></Pgraph></Caption>
          <Caption language="en"><Pgraph><Mark1>Table 5: Calculated antibiotic therapy for necrotizing pancreatitis and intra-abdominal mycoses</Mark1></Pgraph></Caption>
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          <MediaID language="de">6de</MediaID>
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          <Caption language="de"><Pgraph><Mark1>Tabelle 6: Matrix f&#252;r die Wahrscheinlichkeit des Nachweises resistenter Erreger bei verschiedenen Peritonitisformen (modifiziert nach &#91;23&#93;)</Mark1></Pgraph></Caption>
          <Caption language="en"><Pgraph><Mark1>Table 6: Matrix for the probability of detecting resistant pathogens in various forms of peritonitis (modified according to &#91;23&#93;)</Mark1></Pgraph></Caption>
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          <MediaNo>2</MediaNo>
          <MediaID language="de">2de</MediaID>
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          <Caption language="de"><Pgraph><Mark1>Tabelle 2: Kalkulierte Antibiotika-Therapie bei intra- abdomineller Infektion mit Verdacht auf resistenten Erreger</Mark1></Pgraph></Caption>
          <Caption language="en"><Pgraph><Mark1>Table 2: Calculated antibiotic treatment for intra-abdominal infection suspected of resistant pathogens</Mark1></Pgraph></Caption>
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