Is there any difference in perioperative characteristics or postoperative complications between overweight, normal-weight and obese patients in delayed DIEP reconstructions?

Increased number of overweight and obese women are seeking breast reconstruction. Studies have demonstrated that obese experience increased rates of complications, but less data is available considering overweight patients. We analyzed the impact of body mass index (BMI) on perioperative characteristics and complications in unilateral delayed deep inferior epigastric perforator flap (DIEP) reconstructions. The records of patients with DIEP reconstruction performed between 2014 and 2020, were retrospectively analyzed. Patients were categorized into obese (BMI ≥30), overweight (BMI 25.0–29.9), and normal-weight groups (BMI 150ml was associated with both minor and major complications (p = 0.022). Greater BMI moderated with the radiation therapy for higher risk of minor complications (OR 42.0, 95%CI 3.54–49.7, p = 0.003). We conclude that greater BMI alone is not associated with a higher overall complication rate, but both overweight and obesity may be moderators for other risk factors.publishedVersionPeer reviewe