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Harnwegsinfektionen nach Nierentransplantation

Essener Algorithmus zur kalkulierten Antibiotikatherapie

Urinary tract infections after kidney transplantation

Essen algorithm for calculated antibiotic treatment

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Zusammenfassung

Harnwegsinfektionen (HWI) sind die am häufigsten auftretenden Infektionen (besonders in der Frühphase nach Transplantation) und können langfristig die Transplantatfunktion beeinträchtigen. Jeder HWI bei Nierentransplantierten ist mit den entsprechenden Konsequenzen für Diagnose und Therapie als „kompliziert“ anzusehen. Der zunehmende Anteil multiresistenter Keime ist eines der zentralen Probleme bei der Behandlung. Dies bedeutet für den klinischen Alltag u. U. Isolationsmaßnahmen konsequent umzusetzen und die Dauer von eingebrachtem Fremdmaterial (z. B. Blasenverweilkatheter) auf ein Mindestmaß zu reduzieren. Nachweis einer Leukozyturie und Urinkulturen werden benötigt, um die Infektion zu bestätigen, den entsprechenden Keim zu identifizieren und anhand der Urinkultur die antibiotische Therapie zu überprüfen.

Der „Essener Algorithmus zur kalkulierten antibiotischen Behandlung von Harnwegsinfektionen bei nierentransplantierten Patienten“ berücksichtigt neben den gramnegativen Keimen die erhöhte Inzidenz von Enterokokken in der Frühphase nach Transplantation. Innerhalb der ersten beiden Monate sollten Chinolone eingesetzt werden, später Cephalosporine. Bei einer Urosepsis sollten gramnegative Problemkeim (z. B. Pseudomonaden) kalkuliert antibiotisch mitbehandelt werden (z. B. Piperacillin und Tazobactam). Ferner sollte bei schweren Infektionen die kalkulierte Therapie parenteral begonnen werden. In jedem Fall sollten bei der Wahl der kalkulierten Therapie die lokalen Resistenzverhältnisse vertraut sein.

Abstract

Urinary tract infections are the most common infection early after transplantation and can affect long-term graft function. Any urinary tract infection in renal transplant recipients should be seen as “complex” with regard to consequences for diagnosis and therapy. The increase in resistance to anti-infective agents seen among uropathogens is one of the central therapeutic problems. This means for routine clinical practice that contact isolation precautions should be consistently implemented for affected patients and the duration of introducing urinary tract instruments should be minimized. Detection of pyuria and urine cultures are required to confirm infection, to identify the corresponding pathogen, and to review the antibiotic therapy.

The “Essen algorithm for calculated antibiotic treatment of urinary tract infections in renal transplant patients” takes into consideration the high incidence of Gram-negative pathogens in general and the increased incidence of enterococci in the early phase after transplantation. Within the first 2 months after transplantation quinolones should be used and later cephalosporins. In case of urosepsis, calculated antibiotic therapy should cover problematic Gram-negative pathogens such as pseudomonades. The calculated antibiotic therapy should be administered intravenously in severe infections. In any case the local and regional antibiotic susceptibility should be taken into account when deciding on the calculated antibiotic therapy.

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Der korrespondierende Autor weist auf folgende Beziehung/en hin: Forschungsprojektfinanzierung durch Roche Pharma.

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Becker, S., Witzke, O., Rübben, H. et al. Harnwegsinfektionen nach Nierentransplantation. Urologe 50, 53–56 (2011). https://doi.org/10.1007/s00120-010-2470-x

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