Mediastinitis is the most feared infectious complication after cardiac surgery. Several risk factors are known such as: obesity, diabetes, chronic obstructive pulmonary disease, double breast sampling, immunodeficiency, corticosteroid therapy, reoperation, chest radiotherapy, and dialysis. Three modes of contamination are described: intraoperative contamination, hematogenous dissemination during sepsis, gradual contamination from cutaneous dehiscence. It is important and simple to fight against this third mode. The dehiscence of the sternotomy scar represents a gateway and facilitates bacterial colonization and is a risk factor for infection of the surgical site. These skin disunities lead to an increase in health care costs due to extension of hospital stay, the cost of repeated nursing care, surgical revision, and the need for increased follow-up. They delay cardiac rehabilitation and return home. It is estimated that these simple disunities occur in more than 15% of cases, although fortunately they rarely result in mediastinitis. While the use of NPWT for the prevention of wound healing complications is permitted, its benefit has not been demonstrated. Its action is multiple with a reduction in the rate of repair of dressings and therefore of soiling, drainage of the wound, limitation of maceration, acceleration of healing. The use of NPWT as a dressing for sternotomies could prevent skin breakdown, and therefore superficial and deep surgical site infections. Two types of NPWT devices exist, corresponding to 2 different types of treatment: the 7-day NPWT without dressing repair but with reservoir (PREVENA®), the NPWT with 3-day repair without reservoir (PICO®). Given the cost and widespread use of NPWT for chirurgical site infection prophylaxis, it is important to conduct randomized trials to assess the expected benefit of these NPWTs designed for use on clean, closed surgical incisions. In cardiac surgery, its benefit has only been shown in a high-risk population: surgery for Coronary Artery Bypass Graft (CABG). The present clinical investigation will be the first randomized, multicenter trial comparing the efficacy and safety of NPWT versus standard dressing in preventing the risk of scar dehiscence after cardiac surgery, in a standard population. The patients will be followed for 90 days (3 months).
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Complete median sternotomy wound cutaneous dehiscence
Timeframe: 30 postoperative days