Design of a surveillance system of antibiotic use and bacterial resistance in German intensive care units (SARI).
BACKGROUND
Data on antibiotic consumption and bacterial resistance are important for benchmarking, ensuring quality of antibiotic treatment and helping to understand the relationship between the use of antibiotics and the emergence of resistance.


METHODS
The SARI project is an ecological study that has established laboratory-based surveillance in German intensive care units (ICU). Resistance rates of 13 sentinel pathogens are reported and certain alert organisms are sent for genotyping and retesting of antimicrobial resistance.


RESULTS
The project, initiated in February 2000, now includes 35 ICUs generating a total of 266,013 patient days, 354,356 defined daily doses (DDD) and providing susceptibility data on 21,354 isolates. Pooled antibiotic usage density (AD = DDD/1,000 patient days) was highest for penicillins with lactamase inhibitor (AD 338.3) followed by quinolones (AD 155.5) and second-generation cephalosporins (AD 124.6). Total AD was calculated as 1,337 DDD/1,000 patient days. Resistance rates (RR) for laboratories testing according to the German Industrial Standard (DIN) were 19.3% for methicillin-resistant Staphylococcus aureus (MRSA), 9.5% for ciprofloxacin-resistant Escherichia coli and 25.4% for imipenem-resistant Pseudomonas aeruginosa. 40% of the laboratories did not identify the extended spectrum beta lactamase production of a Klebsiella pneumoniae strain.


CONCLUSIONS
Focusing on German ICUs, the SARI surveillance system provides a concept that produces a benchmark for the link between antibiotic resistance and consumption.
Meyer
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Institute of Environmental Medicine and Hospital Epidemiology, Freiburg University Hospital, Hugstetter Str. 55, D-79106 Freiburg, Germany. smeyer@iuk3.ukl.uni-freiburg.de
Jonas
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Schwab
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Rueden
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Gastmeier
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Daschner
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D000900:Anti-Bacterial Agents / Q000494:pharmacology* / Q000627:therapeutic use; D001424:Bacterial Infections / Q000188:drug therapy* / Q000517:prevention & control; D003428:Cross Infection / Q000517:prevention & control*; D024881:Drug Resistance, Bacterial; D017723:Drug Utilization Review; D005858:Germany; D017408:Guidelines as Topic; D006801:Humans; D007362:Intensive Care Units / Q000592:standards*; D008826:Microbial Sensitivity Tests; D012680:Sensitivity and Specificity; D017749:Total Quality Management
D000900:Anti-Bacterial Agents