title: Does negative pressure wound therapy have a role in preventing poststernotomy wound complications?
abstract: BACKGROUND
  Sternal wound infection (SWI) remains a devastating complication after cardiac surgery, decreasing long-term and short-term survival. In treating documented SWI, negative pressure wound therapy (NPWT) reduces wound edema and time to definitive closure and improves peristernal blood flow after internal mammary artery (IMA) harvesting. The authors evaluated NPWT as a form of "well wound" therapy in patients at substantial risk for SWI based on existing risk stratification models.
  
  
  METHODS
  Records of 57 adult cardiac surgery patients (September 2006 to April 2008) were reviewed. After preoperative risk assessment, NPWT was instituted on the clean, closed sternotomy immediately after surgery and continued 4 days postoperatively. Adverse postoperative events, including SWI, need for readmission, and other complications, were documented.
  
  
  RESULTS
  Mean age was 60.4 +/- 10 years, and 89.5% were male; 77.2% were obese (mean body mass index 35.3 +/- 6.7), 54.4% were diabetic, and 29 (50.9%) were both obese and diabetic. Coronary artery bypass (CAB) with single IMA was performed in 50.9% of the patients followed in frequency by combined CAB/valve, non-CAB surgery, and CAB with bilateral IMA. Estimated risk for SWI was 6.1 +/- 4%. All patients tolerated NPWT to completion. Thirty-day and in-hospital mortality was 1.8% and unrelated to DSWI. No treatment of SWI was required.
  
  
  CONCLUSIONS
  In this high-risk cohort, 3 postoperative SWI cases were anticipated but may have been mitigated by NPWT. This is an easily applied and well-tolerated therapy and may stimulate more effective wound healing. Among patients with increased SWI risk, strong consideration should be given to NPWT as a form of "well wound" therapy.
authors.affiliation: Department of Surgery, Durham Veteran Affairs Medical Center, Durham, NC, USA. Broadus.atkins@va.gov
authors.forename: Broadus Zane
authors.initials: BZ
authors.lastname: Atkins
authors.forename: Mary Kay
authors.initials: MK
authors.lastname: Wooten
authors.forename: Jean
authors.initials: J
authors.lastname: Kistler
authors.forename: Kista
authors.initials: K
authors.lastname: Hurley
authors.forename: G Chad
authors.initials: GC
authors.lastname: Hughes
authors.forename: Walter G
authors.initials: WG
authors.lastname: Wolfe
mesh_terms: D000368:Aged; D015331:Cohort Studies; D005260:Female; D006331:Heart Diseases / Q000150:complications / Q000473:pathology / Q000601:surgery*; D006801:Humans; D007902:Length of Stay; D008297:Male; D008480:Mediastinitis / Q000209:etiology / Q000517:prevention & control*; D008875:Middle Aged; D054843:Negative-Pressure Wound Therapy; D012189:Retrospective Studies; D012307:Risk Factors; D013530:Surgical Wound Infection / Q000209:etiology / Q000517:prevention & control*; D013908:Thoracotomy / Q000009:adverse effects*; D016896:Treatment Outcome; D014945:Wound Healing