Effectiveness of cold-air anesthesia during fractional carbon-dioxide laser treatment
10.3760/cma.j.issn.1671-0290.2024.03.022
- VernacularTitle:超脉冲CO 2点阵激光治疗痤疮瘢痕中冷空气冷却的止痛效果
- Author:
Lidan ZHANG
1
;
Xiaolei QIN
;
Yanmei WANG
;
Mengjiao CHEN
;
Kai LI
Author Information
1. 深圳德悦诊所皮肤科，深圳 518034
- Keywords:
Cicatrix;
Acne scars;
Fractional carbon-dioxide laser;
Cold-air cooling device;
Temperature;
Pain
- From:
Chinese Journal of Medical Aesthetics and Cosmetology
2024;30(3):292-295
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To evaluate the impact of cold-air anesthesia on patients′ comfort and side effects during ablative fractional carbon-dioxide (CO 2) laser treatment for acnescars. Methods:Eighteen patients with atrophic acne scars treated with CO 2 laser were used as split-face comparative study with a cold-air device combined with 5% lidocaine cream on the left side of the face, and the right side as a control group treated with 5% lidocaine cream only. Symptoms and signs of patients were observed during treatment, immediately after treatment, 15 minutes, 30 minutes and 1 month after treatment. The score of patient′s comfort and incidence of adverse events was evaluated. Results:The results were obvious difference between each group. The surface temperature in combined group (33.1±1.3) showed significantly better results compared with other groups (36.9±0.4) during the operative period while the same result after the treatment immediately shown in the combined group (35.1±1.3) compared with other groups (36.4±0.2). The score of erythema shown that combined group (48.7±8.4) was significantly lower than that of the control group (54.8±8.0) ( P<0.05) as the score of exudation in combined group (6.2±1.6) was lower than that in the control group (7.8±1.6). There was significant statistical difference regarding scores of erythema between combined group (46.9±6.6) and control group (51.8±6.9) a month after the treatment. The pigmentation score revealed the same result that the combined group (48.9±8.8) was lower than the other groups (51.4±7.0). No patients had severe adverse events. Conclusions:The cold-air cooling application is safe and effective to reduce the surface temperature, pain and side effects during fractional carbon-dioxide laser treatment.
