Background: One of the major risk variables for surgical site infection is wound management. Understanding infection risk factors for breast operations is essential in order to develop infection-prevention strategies and improve surgical outcomes. the aim of this trial is to assess the influence of dressing wear time on surgical site infection rates and skin colonization. Patients' perception at self-assessment will also be analyzed.Methods/Design: This is a two-arm randomized controlled trial. Two hundred breast cancer patients undergoing immediate or delayed breast reconstruction will be prospectively enrolled. Patients will be randomly allocated to group I (dressing removed on postoperative day one) or group II (dressing removed on postoperative day six). Surgical site infections will be defined by standard criteria from the Centers for Disease Control and Prevention (CDC). Skin colonization will be assessed by culture of samples collected at predefined time points. Patients will score dressing wear time with regard to safety, comfort and convenience.Discussion: the evidence to support dressing standards for breast surgery wounds is empiric and scarce. CDC recommends protecting, with a sterile dressing for 24 to 48 hours postoperatively, a primarily closed incision, but there is no recommendation to cover this kind of incision beyond 48 hours, or on the appropriate time to shower or bathe with an uncovered incision. the results of the ongoing trial may support standard recommendations regarding dressing wear time after breast reconstruction.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Fundação de Amparo à Pesquisa do Estado de Minas Gerais (FAPEMIG)Universidade Federal de São Paulo, Dept Surg, Div Plast Surg, São Paulo, BrazilUniv Vale do Sapucai, Dept Surg, Div Plast Surg, Pouso Alegre, BrazilUniv Vale do Sapucai, Dept Microbiol, Pouso Alegre, BrazilUniv Vale do Sapucai, Sch Med, Pouso Alegre, BrazilUniv Vale do Sapucai, Dept Bioestat, Pouso Alegre, BrazilUniversidade Federal de São Paulo, Div Plast Surg, BR-04024002 São Paulo, BrazilUniversidade Federal de São Paulo, Dept Surg, Div Plast Surg, São Paulo, BrazilUniversidade Federal de São Paulo, Div Plast Surg, BR-04024002 São Paulo, BrazilCNPq: 480644/2011-0Web of Scienc