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Effect of Application Site of Low-Level Laser Therapy in Random Cutaneous Flap Viability in Rats

机译：低水平激光疗法的应用部位对大鼠随机皮瓣成活率的影响

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Objective: This study aimed to investigate the effect of diode laser (830nm) irradiation on the viability of ischemic random skin flaps in rats, as well as to determine the most effective site for applying laser radiation to speed healing. Background Data: Low-level laser therapy (LLLT) has recently been used to improve the viability of ischemic random skin flaps in rats. Materials and Methods: Seventy Wistar rats were used and divided into seven groups of 10 rats each: group 1, sham laser treatment; group 2, which received irradiation at 1 point 5cm from the flap's cranial base; group 3, which received irradiation at 2 points (5 and 7.5cm from the flap's base); group 4, which received irradiation at 3 points (2.5, 5 and 7.5cm from the flap's base); group 5, which received irradiation at 1 point 2.5cm from the flap's base; group 6, which received irradiation at 2 points (2.5 and 5cm from the flap's base); and group 7, which received irradiation at 1 point 7.5cm from the flap's base. The animals were subjected to laser therapy at an energy density of 36J/cm2 for 72sec immediately after surgery, and one time on each of the four subsequent days. The percentage of necrotic skin flap area was calculated on the seventh postoperative day using a paper template. Results: The results showed that the rats in group 5 had the highest increase in skin flap viability, with a statistically significant difference compared to the other groups. Statistically significant differences were not seen between any of the other groups. Conclusion: The diode laser was effective in increasing skin flap viability in rats, and laser irradiation of a point 2.5cm from the cranial base flap was found to be the most effective.
机译：目的：本研究旨在研究二极管激光（830nm）辐照对大鼠缺血性随机性皮瓣存活的影响，并确定最有效的激光辐照部位以加速愈合。背景资料：低水平激光疗法（LLLT）最近已用于改善大鼠缺血性随机性皮瓣的生存能力。材料与方法：使用Wistar大鼠70只，分为7组，每组10只。第2组，在距皮瓣颅底5cm处的1处接受了照射；第3组，在2个点（距皮瓣底部5和7.5cm）接受辐照；第4组，在3个点（距皮瓣根部2.5、5和7.5cm）接受辐照；第5组，在距皮瓣底部2.5cm处的1个点接受了照射；第6组，在2个点（距皮瓣底部2.5和5cm）接受辐射；第7组，在距皮瓣根部7.5cm的1个点接受了辐照。手术后立即对动物进行能量密度为36J / cm 2 的激光治疗，持续72秒，随后每四天一次。术后第七天使用纸模板计算出坏死皮瓣面积的百分比。结果：结果显示，第5组的大鼠皮瓣活力增加最高，与其他组相比有统计学差异。在其他任何组之间均未发现统计学上的显着差异。结论：二极管激光可有效提高大鼠皮瓣的生存能力，发现距颅底皮瓣2.5cm处的激光照射效果最佳。

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  • 来源
    《Photomedicine and Laser Surgery》 |2009年第3期|411-416|共6页
  • 作者

    Rodrigo Paschoal Prado; Carlos Eduardo Pinfildi; Richard Eloin Liebano; Bernardo S. Hochman; Lydia Masako Ferreira;

  • 作者单位

    Master of Basic Sciences in Plastic Surgery, S?o Paulo Federal University, S?o Paulo, Brazil.;

    Department of Surgery, S?o Paulo Federal University, S?o Paulo, Brazil.;

    Department of Plastic Surgery, S?o Paulo Federal University, S?o Paulo, Brazil.;

    Department of Plastic Surgery, S?o Paulo Federal University, S?o Paulo, Brazil.;

    Head of Plastic Surgery and Coordinator of the Postgraduate Program in Plastic Surgery, S?o Paulo Federal University, S?o Paulo, Brazil.;

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