• JAMA surgery · Jan 2015

    Multicenter Study Comparative Study

    A comparison of 2 surgical site infection monitoring systems.

    • Mila H Ju, Clifford Y Ko, Bruce L Hall, Charles L Bosk, Karl Y Bilimoria, and Elizabeth C Wick.
    • Division of Research and Optimal Patient Care, American College of Surgeons, Chicago, Illinois2Surgical Outcomes and Quality Improvement Center, Department of Surgery, Feinberg School of Medicine, Northwestern University, Northwestern Memorial Hospital, C.
    • JAMA Surg. 2015 Jan 1;150(1):51-7.

    ImportanceSurgical site infection (SSI) has emerged as the leading publicly reported surgical outcome and is tied to payment determinations. Many hospitals monitor SSIs using the American College of Surgeons National Surgical Quality Improvement Program (ACS NSQIP), in addition to mandatory participation (for most states) in the Centers for Disease Control and Prevention's National Healthcare Safety Network (NHSN), which has resulted in duplication of effort and incongruent data.ObjectiveTo identify discrepancies in the implementation of the NHSN and the ACS NSQIP at hospitals that may be affecting the respective SSI rates.Design, Setting, And ParticipantsA pilot sample of hospitals that participate in both the NHSN and the ACS NSQIP.InterventionsFor each hospital, observed rates and risk-adjusted observed to expected ratios for year 2012 colon SSIs were collected from both programs. The implementation methods of both programs were identified, including telephone interviews with infection preventionists who collect data for the NHSN at each hospital.Main Outcomes And MeasuresCollection methods and colon SSI rates for the NHSN at each hospital were compared with those of the ACS NSQIP.ResultsOf 16 hospitals, 11 were teaching hospitals with at least 500 beds. The mean observed colon SSI rates were dissimilar between the 2 programs, 5.7% (range, 2.0%-14.5%) for the NHSN vs 13.5% (range, 4.6%-26.7%) for the ACS NSQIP. The mean difference between the NHSN and the ACS NSQIP was 8.3% (range, 1.6%-18.8%), with the ACS NSQIP rate always higher. The correlation between the observed to expected ratios for the 2 programs was nonsignificant (Pearson product moment correlation, ρ = 0.4465; P = .08). The NHSN collection methods were dissimilar among interviewed hospitals. An SSI managed as an outpatient case would usually be missed under the current NHSN practices.Conclusions And RelevanceColon SSI rates from the NHSN and the ACS NSQIP cannot be used interchangeably to evaluate hospital performance and determine reimbursement. Hospitals should not use the ACS NSQIP colon SSI rates for the NHSN reports because that would likely result in the hospital being an outlier for performance. It is imperative to reconcile SSI monitoring, develop consistent definitions, and establish one reliable method. The current state hinders hospital improvement efforts by adding unnecessary confusion to the already complex arena of perioperative improvement.

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