【 文献重点摘要 】
 

Aims: To evaluate the effect of nonablative superpulsed radiofrequency used for skin tightening and improvement of skin folds in Indian patients.

Settings and Design: One hundred patients in the age group of 35-65 years with laxity of skin over face and neck were taken up for study using superpulse radiofrequency. Methods and

Materials: Superpulsed radiofrequency is a biterminal, monopolar device which delivers current at the frequency of 1.75 MHz. In this study, current was delivered to the tissue with a capacitive electrode with a diameter of 25 mm. Power of 100-120 W, frequency of 18 Hz and pulse width of 50 ms was used.

Statistical Analysis Used: Chi-square test, nonparametric Friedman test.

Results: Evaluation was done by two independent observers on the basis of comparative photographs taken before treatment and then monthly after treatment for up to 6 months. A quartile grading scale was used. Patient satisfaction scores matched the clinical improvements observed. Ninety four patients completed a 6 month follow up. The age groups taken were 31-40 years, 41-50 years, 51-60 years, and >60 years and various areas were studied. The difference in improvement in all areas except glabellar folds across all age groups was found to be statistically significant.

Conclusions: Nonablative face lift with a superpulsed radiofrequency machine is a safe, convenient and quick office procedure with excellent cosmetic results. It is noninvasive and there is no downtime. It can be used in all skin types and is safe on Indian skin. Longterm studies of effect of nonablative radiofrequency treatment on Indian skin is required.

Key words: Facelift, radiofrequency, skin tightening

目的：评价印度患者使用非消融性超脉冲射频收紧皮肤和改善皮肤皱褶的效果。

地点和设计：采用超脉冲射频治疗面颈部皮肤松弛患者100例，年龄35~65岁。

方法和材料：超脉冲射频是一种双终端、单极设备，其输出电流的频率为1.75 MHz。在本研究中，电流通过直径为25 mm的电容电极输送到组织。功率100~120W，频率18 Hz，脉宽50ms。

统计分析采用：卡方检验、非参数Friedman检验。

结果：由两名独立观察者根据治疗前和治疗后每月拍摄的对比照片进行评估，最长为6个月。采用四分位数评分法。患者满意度评分与观察到的临床改善相匹配。94例患者完成6个月的随访。年龄分别为31~40岁、41~50岁、51~60岁、>60岁和不同地区。在所有年龄组中，除了眉间皱褶之外，所有区域的改善差异被发现具有统计学意义。

结论：超脉冲射频机非消融性面部提升术是一种安全、方便、快捷、美容效果好的办公方法。它是非侵入性的，没有停机。它可以在所有皮肤类型中使用，在印度皮肤上是安全的。需要对非消融性射频治疗对印度皮肤的影响进行长期研究。

关键词：整容、射频、紧肤