BREAST-Q and Donor Site Comparison in Bilateral Stacked Autologous Breast Reconstruction.

Background: Patients undergoing bilateral autologous breast reconstruction may benefit from increased flap volume using bilateral stacked deep inferior epigastric perforator (DIEP) and profunda artery perforator (PAP) flaps. Our aim was to characterize the donor site morbidity and patient-reported outcomes in four-flap breast reconstruction. Methods: Retrospective review was performed for all patients undergoing four-flap breast reconstruction by two surgeons between January 2010 and September 2021. Outcome measures including the BREAST-Q reconstructive module, the lower extremity functional scale (LEFS), inpatient surgical site pain scores by numeric pain rating scale (NPRS), and a postoperative subjective survey comparing donor sites were obtained. Four-flap BREAST-Q scores were compared with bilateral DIEP and bilateral PAP patients. Results: A total of 79 patients undergoing four-flap breast reconstruction were identified. Four-flap BREAST-Q scores (n = 56) were similar to bilateral DIEP and bilateral PAP reconstruction patients. Long-term survey outcomes from the LEFS demonstrated improved score trend after 6 months. Mean instances of donor site pain location recorded at the abdomen were significantly higher than the thigh during the postoperative admission. Subjective survey data revealed more long-term donor site pain at the PAP site, a patient preference for the DIEP donor site, and easier postoperative care for the DIEP donor site. Conclusions: This is the largest consecutive series of four-flap breast reconstruction outcomes reported to date. BREAST-Q scores in four-flap patients demonstrate overall patient satisfaction that is similar to both bilateral DIEP and bilateral PAP reconstruction patients. The DIEP donor site appears to be preferred by patients over the PAP donor site.