JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
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Sternal wound reconstruction: management in different cardiac populations.

Poststernotomy mediastinitis is a feared complication for patients undergoing cardiac surgery associated with high rates of morbidity and mortality. Approximately 15% of patients will ultimately be readmitted for a recurrent sternal wound infection. The objective of this study is to review a large single surgeon experience with sternal wound patients managed with a variety of soft tissue flaps to assess mitigating factors, involved organisms, and treatment protocols as related to specific cardiac populations. Records for 136 sternal reconstruction patients treated from January 2000 to July 2007 were evaluated. Patients underwent a variety of cardiac surgeries including coronary artery bypass grafting (CABG), valve replacement, aortic reconstruction, heart transplantation, lung transplantation, and combinations of these procedures. A total of 39.2% of patients developed a sternal wound during the same admission as their cardiac surgery, at an average of 16.1 days. This rate was only 6% for CABG-only patients and rose to nearly 50% in heart transplant and CABG + valve patients. A total of 78.6% of heart transplant patients with a sternal wound had a history of ventricular assist device and 41% of all patients had at least 1 previous sternotomy. Thirteen patients (9.6%) had 1 or more recurrent infections requiring surgery; 50% occurring in transplant patients, most of whom had diabetes and/or renal insufficiency. The most common presenting symptom was drainage (n = 75, 55.6%) or wound dehiscence (n = 22, 16.3%). Twenty-five different organisms were identified; 26 patients (18.5%) had multiple organisms. Staphylococcus species were most common. Plastic surgery intervention occurred on average 109.2 days after cardiac surgery. CABG and CABG + valve patients most frequently received right pectoralis muscle turnover flaps or left pectoralis muscle advancement flaps. Ten heart transplant patients (37.0%) underwent omental flaps. The 30-day perioperative mortality rate was 13 patients (9.6%).

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