Department of Veterinary Medicine, Iwate University, Morioka, Iwate 020-8550, Japan.
Res Vet Sci. 2012 Dec;93(3):1467-71. doi: 10.1016/j.rvsc.2012.05.010. Epub 2012 Jun 7.
An interventional ultrasound technique to increase the safety of surgical treatment of the calf forelimb was tested. First, the brachial plexus was evaluated using ultrasonography and then 2% lidocaine was injected under ultrasound guidance. Ultrasonically, the brachial plexus appeared as multiple hypoechoic areas surrounded by a hyperechoic rim or a hyperechoic structure characterised by multiple discontinuous lines. It was located between the omotransverse muscle and axillary artery and vein. The sensitive effect in the forelimb was seen mainly in the area supplied by the musculocutaneous nerve, indicating successful blockage in the nerve plexus. Out of the eight forelimbs, the motor effect was observed in seven forelimbs. These results suggest the clinical feasibility of ultrasound-guided brachial plexus block in bovine medicine, although further studies are needed to examine various approaches, including the sites of needle insertion and the appropriate volume and dosage of anaesthetic.
研究测试了一种介入性超声技术，以提高小牛前肢手术治疗的安全性。首先，使用超声检查评估臂丛神经，然后在超声引导下注射 2%利多卡因。超声下，臂丛神经表现为多个低回声区域，周围有高回声边缘或高回声结构，由多条不连续的线组成。它位于肋间肌和腋窝动脉和静脉之间。在前肢中，感觉效果主要在由肌皮神经供应的区域，表明神经丛成功阻断。在这 8 条前肢中，有 7 条前肢观察到运动效果。这些结果表明，超声引导下的牛科动物臂丛神经阻滞在临床上是可行的，尽管还需要进一步研究，以检查各种方法，包括进针部位、麻醉的适当容量和剂量。
