Comparison of the effects of different pulse widths of 595 nm flashlamp-pumped pulsed dye laser in the treatment of hypertrophic scars and keloid

doi:10.3969/j.issn.1006-7795.2013.05.025

Abstract

Abstract:

Objective To determine the efficacy and to compare the effects of different pulse widths of 595 nm flashlamp-pumped pulsed dye Laser(PDL) in the treatment of hypertrophic scars and keloid. Methods Eleven patients with hypertrophic scars and keloid were treated with 595 nm PDL at 1.5 ms with 7-8.5 J/cm² using a 7 mm spot size; another 11 patients were treated with 595 nm PDL at 0.45 ms with 5-6.5 J/cm² using a 10 mm spot size. Treatment composed of 3 sessions at 4-week to 6-week intervals. Scars were evaluated using the Vancouver scar scale(VSS). Patients evaluated pain and pruritus using a scale from 0 to 10.Results The average sum of the VSS showed significant improvement after the first treatment using 1.5 ms and 0.45 ms pulse 595 nm PDL. The improvement of the VSS after the first to the third treatment were 45.45%, 63.64%, 100% (using 1.5 ms pulse) and 54.55%, 90.90%, 100% (using 0.45 ms pulse) respectively. There was no significant difference between 1.5 ms and 0.45 ms pulse treatment groups in the VSS, the individual parameters of the VSS, pain scale and pruritus scale.Conclusion The 595 nm PDL is a safe and effective treatment of hypertrophic scars and keloid. Both the 1.5 ms and 0.45 ms pulse 595 nm PDL resulted in scar improvement, there was no significant difference between them.

Key words: hypertrophic scars, keloid, pulsed dye laser, pulse width

CLC Number:

R751

ZHONG Shan, MEI Xueling, ZHAO Junying. Comparison of the effects of different pulse widths of 595 nm flashlamp-pumped pulsed dye laser in the treatment of hypertrophic scars and keloid[J]. Journal of Capital Medical University, 2013, 34(5): 759-765.

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URL: https://journal03.magtech.org.cn/Jweb_sdykdxxb/EN/10.3969/j.issn.1006-7795.2013.05.025

https://journal03.magtech.org.cn/Jweb_sdykdxxb/EN/Y2013/V34/I5/759

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