Marchina-Gonçalves André, Laredo Francisco G, Gil Francisco, Soler Marta, Agut Amalia, Redondo José Ignacio, Belda Eliseo
Escuela Internacional de Doctorado, Programa en Ciencias Veterinarias, Universidad de Murcia, 30100 Murcia, Spain.
Departamento de Medicina y Cirugía Animal, Facultad de Veterinaria, Universidad de Murcia, 30100 Murcia, Spain.
Animals (Basel). 2023 Jul 6;13(13):2214. doi: 10.3390/ani13132214.
The QL block is a high-level locoregional anesthesia technique, which aims to provide analgesia to the abdomen. Several approaches of the QL block have been studied to find out which one allows a greater distribution of the injectate. The aim of this study is to compare the traditional interfascial QL block (IQL) with a new latero-ventral approach (LVQL). We hypothesize that this new approach could be safer and easier to perform, since the injectate is administered more superficially and further away from vital structures. Our second objective is to assess whether a higher volume of injectate (0.6 mL/kg) could reach the ventral branches of the last thoracic nerves, leading to a blockade of the cranial abdomen. Six thawed canine cadavers (12 hemiabdomens) were used for this purpose. Both approaches were performed in all cadavers. A combination of methylene blue/iopromide was administered to each hemiabdomen, randomly assigned to the LVQL or IQL. No differences were found regarding the ease of perform the LVQL with respect to IQL. The results show that both techniques reached the ventral branches from L1 to L3, although only the IQL consistently stained the sympathetic trunk (5/6 IQL vs. 1/6 LVQL). The use of a higher volume did not enhance a more cranial distribution of the injectate.
腰方肌阻滞是一种高级局部区域麻醉技术,旨在为腹部提供镇痛。人们已经研究了几种腰方肌阻滞方法,以找出哪种方法能使注射剂分布得更广。本研究的目的是比较传统的筋膜间腰方肌阻滞(IQL)与一种新的侧腹入路(LVQL)。我们假设这种新方法可能更安全且更容易实施,因为注射剂是在更浅表的位置给药,且距离重要结构更远。我们的第二个目标是评估更高剂量的注射剂(0.6 mL/kg)是否能到达最后肋间神经的腹侧支,从而实现上腹部的阻滞。为此使用了六具解冻的犬类尸体(12个半腹部)。在所有尸体上都进行了两种入路操作。将亚甲蓝/碘普罗胺的混合剂注入每个半腹部,随机分配至LVQL或IQL。在实施LVQL的难易程度方面,与IQL相比未发现差异。结果表明,两种技术都能到达L1至L3的腹侧支,尽管只有IQL能持续使交感干染色(IQL为5/6,LVQL为1/6)。使用更高剂量并未增强注射剂更向上腹部的分布。
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