Preoperative Risk Factors and Complication Rates of Breast Augmentation With Fat Grafting.

[BACKGROUND] The current literature on the complications and risk factors of autologous fat grafting (AFG) for breast augmentation is scant and inconclusive.

[OBJECTIVES] The aim of this study was to use a large, multicenter database to determine the major complications and risk factors of patients undergoing breast augmentation with AFG in comparison to breast augmentation with implants.

[METHODS] Patients undergoing breast augmentation with AFG as well as with implants between January 2, 2017 and July 31, 2019 were identified from the CosmetAssure database (Birmingham, AL). The primary outcome was the occurrence of major complication(s) requiring emergency department visit, hospital admission, or reoperation within 45 days postoperatively. Age, gender, BMI, smoking, diabetes, facility, ASA class, and anesthetic type were evaluated as risk factors.

[RESULTS] Among the 76,128 patients enrolled in CosmetAssure, 789 (1.0%) underwent breast augmentation with AFG, in comparison to 18,544 (24.3%) patients with implants. The incidence of any major complication in the AFG cohort and implant cohort was 3.2% and 2.3%, respectively. Infection was significantly higher in the AFG cohort (1.1% vs 0.5%). Tobacco users were more likely to have any complication, infection, and pulmonary dysfunction/hypoxia on univariate analysis. ASA Class III/IV was more likely to have any complication and infection. On multivariate analysis, smoking was an independent risk factor for any complication (relative risk = 17.1) and infection (relative risk = 20.2).

[CONCLUSIONS] Infection and hematoma are the most common major complications in breast augmentation with AFG. Tobacco use is the only independent risk factor for overall complications and infection. Breast augmentation with AFG has a higher infection rate than augmentation with implants.