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首页> 外文期刊>Journal of cosmetic and laser therapy >Non-ablative scar revision using a long pulsed frequency doubled Nd:YAG laser.
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Non-ablative scar revision using a long pulsed frequency doubled Nd:YAG laser.

机译：使用长脉冲频率Nd：YAG激光加倍的非消融性疤痕修复。

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OBJECTIVE: Unsightly scars often are the only reminder of a previous surgical or traumatic wound. Surgical or ablative scar revision is sought by patients, sometimes unnecessarily. When the aesthetic drawback is mainly a result of hypervascularity or hyperpigmentation, these problems can be specifically targeted with a wavelength that is well absorbed by the two above mentioned chromophores. Some degree of epidermal tightening can also be achieved, which is sometimes useful in slightly atrophic scars. The average improvement after 2-3 sessions was 81% (75%-100%) clearance, as judged by an independent observer who reviewed pre- and post-treatment photographs. No undesired effects were reported. All our patients were satisfied and required no further treatment. METHODS: Selective photothermolysis by means of a long pulsed frequency doubled Nd:YAG laser (DioLite 532, IRIDEX Corporation, Mountain View, CA, USA) was used to eliminate the unsightly vascular and pigmented components of 23 mature scars (scars older than 2 years) in 22 consecutive patients. Energy densities of 17-22 j/cm2 were used with a 500 micron spot, or 65-90 j/cm2 with a 200 micron spot. RESULTS: overall scar clearance averaged 81% after 2.4 treatments. Facial scars showed the best clearance averaging 94% after 2 treatments. Inframammary scars were the most difficult to clear averaging 46%. Postoperative undesired effects were immediate erythema and swelling that subsided within 2-10 hours and microcrusting on 19/22 (88%) patients that resolved within one week. No other temporary or permanent undesired effects such as purpura, hypo- or hyperpigmentation were noticed, even in patients with darker skin types.
机译：目的：难看的疤痕通常是先前手术或外伤的唯一提示。患者寻求手术或消融性疤痕修复，有时是不必要的。当美学缺陷主要是由于血管过多或色素沉着的结果时，这些问题可以专门针对上述两个发色团充分吸收的波长。还可以达到一定程度的表皮收紧，这有时在轻微萎缩性疤痕中有用。一位独立的观察者对治疗前后的照片进行了审查，他们认为，2-3次治疗后的平均清除率为81％（75％-100％）。没有不良反应的报道。我们所有的患者都满意，无需进一步治疗。方法：通过长脉冲倍频Nd：YAG激光（DioLite 532，IRIDEX Corporation，Mountain View，CA，美国）进行选择性光热解法，以消除23种成熟疤痕（大于2岁的疤痕）中难看的血管和色素成分）的连续22例患者中。使用500微米斑点的能量密度为17-22 j / cm2，或使用200微米斑点的能量密度为65-90 j / cm2。结果：经过2.4次治疗后，总体疤痕清除率平均为81％。两次治疗后，面部疤痕的最佳清除率平均为94％。乳房下疤痕最难清除，平均占46％。术后不良反应是立即出现红斑和肿胀，在2-10小时内消退，对19/22（88％）的患者在一周内消退的微结壳。没有发现其他暂时或永久的不良反应，如紫癜，色素沉着或色素沉着过度，即使在皮肤较暗的患者中也是如此。

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