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Validation of Surgical Wound Surveillance

Published online by Cambridge University Press:  21 June 2016

Denise M. Cardo ,
Pamela S. Falk  and
C. Glen Mayhall
Pamela S. Falk
Affiliation:
Hospital Epidemiology Unit of The Regional Medical Center at Memphis
C. Glen Mayhall*
Affiliation:
Hospital Epidemiology Unit of The Regional Medical Center at Memphis
*
Division of Infectious Diseases, University of Tennessee Memphis, 956 Court Avenue, Room H-308, Memphis, TN 38163
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Abstract

Objective:

To determine the sensitivity and specificity of standard infection control surveillance techniques for the identification of surgical wound infections.

Design:

Surveillance data collected by three infection control practitioners (ICPs) was compared to surveillance data collected simultaneously by a gold standard observer.

Setting:

University-affiliated, tertiary care hospital.

Methods:

Using standard infection control surveillance techniques (chart review and discussions with patients' nurses and physicians), ICPs collected surveillance data on patients on the General Surgery and Trauma Surgery Services on days 4 and 7 after surgery and then weekly for 30 days or until patients were discharged from the hospital. Simultaneously, a hospital epidemiologist collected surveillance data and examined each patient's wound daily.

Results:

Nine hundred twenty-five surgical patients including 537 trauma cases and 388 elective general surgery cases were followed postoperatively. The ICPs identified 67 surgical wound infections, and the hospital epidemiologist identified 80 surgical wound infections for a sensitivity of 83.8% with a 95% confidence interval (CI95) of 75.7% to 91.9%. Specificity was 99.8% with a CI95 of 99% to 100%. The sensitivity was the same for trauma surgery and general surgery, but incisional wound infections were more difficult to identify than deep wound infections. During a second validation period, sensitivity was 92.3% with a CI95 of 62% to 100%.

Conclusions:

Standard infection control surveillance techniques have the same sensitivity for detection of surgical wound infections as they do for identification of other nosocomial infections. Accurate data on surgical wound infections can be collected without direct examination of surgical wounds.

Type
Original Articles
Information
Infection Control & Hospital Epidemiology , Volume 14 , Issue 4 , April 1993 , pp. 211 - 215
Copyright
Copyright © The Society for Healthcare Epidemiology of America 1993

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Footnotes

Escola Paulista Medicina in San Paulo, Brazil

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