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Reduction of Surgical Site Infection Rates Associated With Active Surveillance

Published online by Cambridge University Press:  21 June 2016

C. Brandt*
Affiliation:
Institut für Hygiene und Umweltmedizin, Charité-Universitätsmedizin Berlin, Freie UniversitätandHumboldt Universität, Berlin National Reference Center for the Surveillance of Nosocomial Infections, Berlin
D. Sohr
Affiliation:
Institut für Hygiene und Umweltmedizin, Charité-Universitätsmedizin Berlin, Freie UniversitätandHumboldt Universität, Berlin National Reference Center for the Surveillance of Nosocomial Infections, Berlin
M. Behnke
Affiliation:
Institut für Hygiene und Umweltmedizin, Charité-Universitätsmedizin Berlin, Freie UniversitätandHumboldt Universität, Berlin National Reference Center for the Surveillance of Nosocomial Infections, Berlin
F. Daschner
Affiliation:
National Reference Center for the Surveillance of Nosocomial Infections, Berlin Institut für Umweltmedizin und Krankenhaushygiene, Albert-Ludwigs-Universität, Freiburg/Breisgau, Germany
H. Rüden
Affiliation:
Institut für Hygiene und Umweltmedizin, Charité-Universitätsmedizin Berlin, Freie UniversitätandHumboldt Universität, Berlin National Reference Center for the Surveillance of Nosocomial Infections, Berlin
P. Gastmeier
Affiliation:
National Reference Center for the Surveillance of Nosocomial Infections, Berlin Institut für Medizinische Mikrobiologie und Krankenhaushygiene, Medizinische Hochschule, Hannover, Germany
*
Institut für Hygiene und Umweltmedizin, Charité-Universitätsmedizin Berlin, Hindenburgdamm 27, 12200 Berlin, Germany ([email protected])

Abstract

Objective.

To evaluate whether surgical site infection (SSI) rates decrease in surgical departments as a result of performing active SSI surveillance.

Design.

Retrospective multiple logistic regression analyses.

Setting.

A group of 130 surgical departments of German hospitals participating in the Krankenhaus Infektions Surveillance System (KISS).

Methods.

Data for 19 categories of operative procedures performed between January 1997 and June 2004 were included (119,114 operations). Active SSI surveillance was performed according to National Nosocomial Infections Surveillance system (NNIS) methods and definitions. Departments' SSI rates were calculated individually for each year of surveillance and for each operative procedure category, taking into account when the individual departments had begun their surveillance activities. Multiple logistic regression analyses on a single operation basis were carried out with stepwise variable selection to predict outcomes for patients with SSI. The variables included were as follows: the department's year of participation, NNIS risk index variables, patients' age and sex, and the hospitals' structural characteristics, such as yearly operation frequency, number of beds, and academic status.

Results.

For 14 of 19 operative procedure categories analyzed, there was a tendency toward lower SSI rates that was associated with increasing duration of SSI surveillance. In multiple logistic regression analyses of pooled data for all operative procedures, the departments' participation in the surveillance system was a significant independent protective factor. Compared with the surveillance year 1, the SSI risk decreased in year 2 (odds ratio, 0.84; 95% confidence interval, 0.77-0.93) and in year 3 (odds ratio, 0.75; 95% confidence interval, 0.68-0.82), and there was no change in year 4.

Conclusion.

The SSI incidence was reduced by one quarter as a result of the surveillance-induced infection control efforts, which indicates the usefulness of a voluntary surveillance system.

Type
Original Articles
Copyright
Copyright © The Society for Healthcare Epidemiology of America 2006

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