Evaluating the benefit of progressive tension sutures at the donor site in autologous breast reconstruction - A retrospective comparative cohort study.

[BACKGROUND] As seroma formation is a common donor site complication following autologous breast reconstruction, we adapted the surgical protocol by introducing progressive tension sutures (PTS). This study aimed to evaluate the influence of PTS at the donor site in autologous breast reconstruction on seroma formation. Additionally, an exploratory analysis on patient satisfaction and aesthetic outcome was performed.

[METHODS] This retrospective cohort study analyzed data of 400 patients who received autologous breast reconstruction between 2018 and 2022. Among them, 204 patients received traditional donor site closure, and 188 patients received PTS with or without drain placement. Proportional incidence of seroma was described and multivariable logistic regression was used to assess the risk factors for seroma formation. At the deep inferior epigastric artery perforator donor site, patient satisfaction was further explored by administering the BREAST-Q and the aesthetic outcome was graded by three blinded participants.

[RESULTS] Overall, 514 breast reconstructions were performed on 400 patients. The incidence of seroma formation was lower in the PTS group compared with that in the traditional closure group. Multivariable analysis showed that patients who received PTS were 40% less likely to develop seroma. Aesthetic outcome was considered more pleasing objectively and subjectively if PTS were performed. Regarding patient satisfaction, no difference was found in the post-operative physical well-being between the two groups.

[CONCLUSIONS] In this large cohort, we found reduced incidence of seroma when PTS were performed. PTS were also associated with reduced odds of seroma formation and were described to be aesthetically more pleasing. PTS should be considered in autologous breast reconstruction.