Predictors of vacuum-assisted closure failure of sternotomy wounds.

摘要

PURPOSE: Vacuum-assisted closure (VAC) is a minimally invasive alternative to a muscle flap for closure of sternotomy wounds. The purpose of this study is to evaluate clinical predictors of VAC therapy failure in order to predict which patients would benefit from this approach. METHODS: A retrospective cohort study of all patients with VAC management of sternotomy wounds between January 1997 and July 2003 was conducted. In this study, 37 patients had VAC management of their wounds post-cardiac surgery. Prior to data collection, 12 risk factors for impaired wound healing were identified. Information was obtained from patient charts and laboratory values. RESULTS: Eight of the 36 patients failed the VAC therapy. Of the 12 variables studied, three were found to be predictive of VAC outcome. Bacteraemic patients had a higher failure rate as compared to patients with negative blood cultures (por=4 cm also had a greater occurrence of VAC failure (por=4 cm or a high degree of BESI tend to have worse outcomes with VAC and may be better managed by a surgical approach. Otherwise, VAC may be a reasonable option even in patients with high risks of impaired wound healing. Prospective randomised studies are needed to validate these hypotheses.