背景:激光光生物调节(激光PBM)是加速烧伤伤口收缩的有效手段,然而,目前尚不清楚激光PBM在直接应用于切除和未切除的烧伤创面时是否会产生更大的获益.对临床前研究进行系统评价的目的是确定激光PBM在切除和未切除烧伤伤口中伤口收缩率的有效性。
方法:在EMBASE中进行了系统搜索,MEDLINE和LILACS数据库。包括临床前研究,分析了激光PBM在烧伤伤口收缩中的有效性,并评估伤口闭合情况。使用SYRCLE偏倚风险工具。随机效应模型用于估计合并效应。
结果:13项研究纳入定性分析,6项纳入定量分析。病变两周后,激光PBM有利于伤口收缩百分比,增加切除烧伤创面的闭合率(SMD=1.34,CI95%0.41至2.27,0.41-2.27,I2=0%,=0%,证据确定性低。在未切除的烧伤中,不确定激光PBM是否增加或减少了伤口收缩率(SMD=1.22(SMD=1.22CI95%-0.05至2.49,I2=68%;=68%;证据的确定性非常低)。
结论:在动物模型中,激光PBM可有效增加切除烧伤的伤口收缩率。然而,由于证据的确定性低,激光对动物伤口收缩影响的真实大小仍不确定;因此我们的结果应谨慎解释.
Laser photobiomodulation (laser PBM) is an effective means of accelerating burn wound contraction, however it is still unclear whether laser PBM produces greater benefit when applied directly to excised and unexcised burn wounds . The aim of this systematic review of preclinical studies was to determine the effectiveness of laser PBM in the wound contraction rate in excised and unexcised burn wounds.
A systematic search was conducted in the EMBASE, MEDLINE and LILACS databases. Preclinical studies were included that analysed the effectiveness of laser PBM in burn wound contraction, and assessed wound closure. The SYRCLE risk of bias tool was used. Random effects models were used to estimate the pooled effect.
Thirteen studies were included in the qualitative analysis and six in the quantitative analysis. Two weeks after the lesion, laser PBM favoured the wound contraction percentage, increasing the closure rate in excised burn wounds (SMD= 1.34, CI 95% 0.41 to 2.27, 0.41-2.27, I2=0%, =0%, low certainty of evidence. In unexcised burns, it was uncertain whether laser PBM increased or diminished the wound contraction rate (SMD=1.22(SMD=1.22 CI 95% -0.05 to 2.49, I2=68%; =68%; very low certainty of evidence).
In the animal model, laser PBM is effective in increasing the wound contraction rate in excised burns. However, due to the low certainty of the evidence, uncertainty remains about the true magnitude of the effect of laser on wound contraction in animals; our results should therefore be interpreted with caution.