Efficacy of 2 940 nm Er∶YAG laser combined with electronic injection of collagen in treatment of striae gravidarum / 中华医学美学美容杂志

ABSTRACT

Objective:To assess the efficacy and security of 2 940 nm Er∶YAG laser combined with electronic injection of collagen in treatment of striae gravidarum.Methods:The symmetrical spots on both sides of abdomen of 21 subjects with striae gravidarum were divided into treatment and control groups by simple randomization method in the Department of Burn and Plastic Surgery, 903 Hospital from November 2017 to May 2019. The treatment group were treated with 2 940 nm Er∶YAG laser combined with electronic injection of collagen every 2 months for 3 sessions, and control group were received 2 940 nm Er∶YAG laser combined with electronic injection of physiological saline. The total effective rate, satisfaction, striae width, histopathology, and the adverse reaction were evaluated at 6 months after treatment.Results:A total of 19 subjects completed the whole trail. The clinical effective rate of the treatment group was 89.47% and the control group was 68.42%. In the treatment group, 11 cases were satisfied with and 6 cases were very satisfied with treatment outcome. In the treatment group, 8 cases were satisfied with and 3 cases were very satisfied with treatment outcome. The difference of total effective rate and satisfaction was statistically significant ( χ2 was 3.91 and 5.54, P was 0.045 and 0.019). The maximum width decreased by (1.53±0.97) mm on treatment side, and (1.37±1.01) mm on control side. The difference of striae width was statistically significant. No adverse effect was observed on both sides. Conclusions:The combination of the 2 940 nm Er∶YAG laser with electronic injection of collagen for treatment of striae gravidarum is a safe and effective approach for improving of striae gravidarum.