Influence of vascular delay on abdominal wall complications in unipedicled TRAM flap breast reconstruction

Surgically delaying a unipedicled lower abdominal transverse rectus abdominis musculocutaneous (TRAM) flap has been shown to improve flow within the flap. This delay, however, also affects blood supply and drainage of the entire anterior abdominal wall. The purpose of this study was to compare the abdominal complications between surgically delayed and nondelayed TRAM flaps. A retrospective case review of lower abdominal TRAM flap breast reconstructions was performed. A total of 35 patients were included in the study, of whom 15 had undergone delay and 20 had not. The patients were found to be matched by age and body mass index. There was a higher incidence of smokers (past or present) in the delayed series. Despite this, no abdominal flap complications were experienced in those who underwent delay. In the nondelayed series, however, three patients (15%) experienced delayed healing, and two flaps (10%) underwent severe necrosis (p = 0.047, chi-squared test). In the delayed series, one patient (7%) was found to have an abdominal bulge. No hernias were encountered. In contrast, two bulges (10%) and four hernias (20%) were identified in patients in the nonndelayed series (p = 0.6 and 0.09, respectively, chi-squared test). These data suggest that a preliminary delay procedure leads to a reduction in the incidence of abdominal wall complications in unipedicled lower abdominal TRAM flaps.