Abstract
To compare outcomes after the development of early (≤30 days) versus delayed (>30 days) deep sternal wound infection (DSWI) after cardiac surgery. Between 2005 and 2016, 64 patients were treated surgically for DSWI following cardiac surgery. Thirty-three developed early DSWI, while 31 developed late DSWI. The mean follow-up was 34.1 ± 32.3 months. Survival for the entire cohort at 1, 3, and 5 years was 93.9%, 85.1%, and 80.8%, respectively. DSWI diagnosed early and attempted medical management was strongly associated with overall mortality (hazard ratio [HR], 25.0 and 9.9; 95% confidence intervals [CIs], 1.18-52.8 and 1.28-76.5; p-value .04 and .04, respectively). Survival was 88.1%, 77.0%, 70.6%and 100%, 94.0% and 94.0% at 1, 3, and 5 years in the early and late DSWI groups, respectively (log-rank = 0.074). Those diagnosed early were more likely to have a positive wound culture (odds ratio [OR], 0.06; 95% CI, 0.01-0.69; p = .024) and diagnosed late were more likely to be female (OR, 8.75; 95% CI, 2.0-38.4; p = .004) and require an urgent DSWI procedure (OR, 9.25; 95% CI, 1.86-45.9; p = .007). Both early diagnosis of DSWI and initial attempted medial management were strongly associated with mortality (HR, 7.48; 95% CI, 1.38-40.4; p = .019 and HR, 7.76; 95% CI, 1.67-35.9; p = .009, respectively). Early aggressive surgical therapy for DSWI after cardiac surgery results in excellent outcomes. Those diagnosed with DSWI early and who have failed initial medical management have increased mortality.
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