Korean J Nosocomial Infect Control.
2006 Jun;11(1):21-26.
Can Multiple Short-Term SunreiUances Replace Long-Term Sunreillance for Estimating Nosocomial Infection Rate?
- Affiliations
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- 1Division of Infectious Disease, Gachon University Gil Medical Center, Incheon, Korea.
- 2Infection Control Unit, Gachon University Gil Medical Center, Incheon, Korea.
- 3Department of Laboratory Medicine, Gachon University Gil Medical Center, Incheon, Korea.
- 4Division of Infections Disease, East-West Neo Medical Center, Kyung Hee University School of Medicine, Seoul, Korea.
- 5Center for Infection Control, East-West Neo Medical Center, Kyung Hee University School of Medicine, Seoul, Korea.
Abstract
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BACKGROUND: To determine whether multiple short-term surveillances are as effective as long-term surveillance for estimating the incidence rates of nosocomial infections (NIs), we prospectively performed 9-month surveillance in four intensive care units (ICUs).
METHODS
NI surveillance was performed prospectively from November 2002 through July 2003, with long-term surveillance performed over the 9-month period, and short-term surveillance performed during the middle 3 weeks of each calendar quarter. The incidence rate of NIs or device-associated infections was calculated as the number of infections per 1,000 patient-days or device-days.
RESULTS
We observed no significant differences between the incidence rates of total NIs determined from these two methods (9.6 [CI95 8.2-11.3] vs 10.4 [CI95 7.5-14.4], P=.66). In addition, these two methods did not differ significantly in estimating the rates of ventilator-associated pneumonia (5.1 [CI95 3.4-7.6] vs 7.5 [CI95 3.8-15.0], P=.35), catheter-associated urinary tract infection (2.4 [CI95 1.7-3.4] vs 1.7 [CI95 0.7-4.1], P=.47), and central line-associated bloodstream infection (2.2 [CI95 1.4-3.4] vs 3.7 [CI95 1.9-7.4], P=.21). Plotting of the NI rates showed that the trends in multiple short-term surveillances were similar to those in long-term surveillance, except in one ICU.
CONCLUSION
Our findings suggest that multiple short-term surveillances could replace long-term surveillance in estimating the baseline incidence rates of NIs in the circumstances of the relatively large number of patients in the ICUs, which would be especially useful in countries with limited resources.
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