PREDICTORS OF 61 UNPLANNED READMISSION CASES IN MICROVASCULAR FREE TISSUE TRANSFER PATIENTS: MULTI-INSTITUTIONAL ANALYSIS OF 774 PATIENTS

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Abstract

Background:

Unplanned readmissions serve as a marker for health care quality. Risk factors associated with unplanned readmission after microvascular free tissue transfer have never been examined. In this study, we sought to identify perioperative predictors of 30-day unplanned readmission in free flap patients.

Methods:

The National Surgical Quality Improvement Program (NSQIP) database was retrospectively reviewed to identify all patients who underwent microvascular free tissue transfer in 2011. Multivariate logistic regression models were used to estimate independent predictors of unplanned readmission.

Results:

Among free flap patients, unplanned readmission rate was 7.9%. In multivariate analysis, the only factor that significantly predicted unplanned readmission (P < 0.05) was open wound/wound infection (odds ratio [OR] 2.71). Postoperative variables significantly associated with unplanned readmission included surgical complications (OR 5.43), medical complications (OR 5.62), and unplanned reoperation (OR 3.94). Flap failure was not associated with unplanned readmission.

Conclusions:

In our study, the presence of either open wound/wound infection, development of surgical complications, medical complications, and unplanned reoperations were associated with unplanned readmissions. Further research in predictive factors is suggested to avoid costly, unnecessary, and preventable readmissions. © 2014 Wiley Periodicals, Inc. Microsurgery 35:13–20, 2015.

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