PDF(Pubmed)
Abstract：
BACKGROUND: Surgery of the goat stifle joint requires good perioperative analgesia, ideally without affecting motor function in the postoperative period. The objective of this study was to describe an ultrasound-guided technique for saphenous nerve block in goats. Eleven fresh female goat cadavers from two different age groups were used: seven of them were four years old with a mean ± SD body weight of 65.9 ± 7.3 kg. Four animals were six months old and their mean ± SD body weight was 20.1 ± 3.1 kg. The cadavers were positioned in lateral recumbency with the limb to be blocked lowermost. A high-frequency linear transducer (6-12 MHz) was used to localise the interfascial plane between the sartorius and the vastus medialis muscles and to identify the saphenous nerve on the medial aspect of the thigh, caudal to the femur, at the level of the femoral triangle. In 22 pelvic limbs 0.1 mL/kg of methylene blue was injected around the saphenous nerve under ultrasound guidance, followed by gross anatomical dissection. The length of circumferentially stained nerve was measured, and the success rate of achieving at least 1 cm of staining is presented with a 95% confidence interval (CI).
RESULTS: Although not all saphenous nerves were sonographically identified, their boundaries were defined as cranial to the femoral artery, lateral to the sartorius muscle, and medial to the vastus medialis and rectus femoris muscles, within the perivascular fat. During anatomical dissection, the overall dye solution distribution was graded as complete in 17/22 limbs indicating a 77.3% success rate [95% CI (0.598, 0.948)], partial in 3/22 limbs and failed in 2/22 limbs.
CONCLUSIONS: The success rate of this study indicates the feasibility of employing the ultrasound-guided technique to perform saphenous nerve block in goats. However, further in-vivo studies are recommended to assess the block\'s clinical efficacy before implementation on clinical patients.
RESULTS: Although not all saphenous nerves were sonographically identified, their boundaries were defined as cranial to the femoral artery, lateral to the sartorius muscle, and medial to the vastus medialis and rectus femoris muscles, within the perivascular fat. During anatomical dissection, the overall dye solution distribution was graded as complete in 17/22 limbs indicating a 77.3% success rate [95% CI (0.598, 0.948)], partial in 3/22 limbs and failed in 2/22 limbs.
CONCLUSIONS: The success rate of this study indicates the feasibility of employing the ultrasound-guided technique to perform saphenous nerve block in goats. However, further in-vivo studies are recommended to assess the block\'s clinical efficacy before implementation on clinical patients.
摘要：
背景：山羊窒息关节的手术需要良好的围手术期镇痛，理想情况下，在术后期间不影响运动功能。这项研究的目的是描述一种超声引导的山羊隐神经阻滞技术。使用了来自两个不同年龄段的11只新鲜的雌性山羊尸体：其中7只四岁，平均±SD体重为65.9±7.3kg。四只动物为6个月大,它们的平均±SD体重为20.1±3.1kg。尸体位于侧卧位，肢体被阻塞在最下面。使用高频线性换能器（6-12MHz）定位缝匠肌和股内侧肌之间的筋膜平面，并识别大腿内侧的隐神经，股骨尾部，在股骨三角的水平。在超声引导下隐神经周围注射亚甲蓝0.1mL/kg,其次是大体解剖。测量圆周染色神经的长度，并且实现至少1cm染色的成功率以95%置信区间(CI)呈现。
结果：虽然并不是所有的隐神经都能通过超声检查来识别，它们的边界被定义为颅骨到股动脉，缝匠肌的外侧，在股内侧和股直肌内侧，血管周围的脂肪.解剖解剖时,在17/22肢体中，整个染料溶液分布被分级为完整，表明成功率为77.3％[95％CI（0.598，0.948）]，3/22肢体部分，2/22肢体失败。
结论：这项研究的成功率表明了采用超声引导技术对山羊进行隐神经阻滞的可行性。然而,在临床患者实施之前,建议进行进一步的体内研究,以评估该块的临床疗效.
结果：虽然并不是所有的隐神经都能通过超声检查来识别，它们的边界被定义为颅骨到股动脉，缝匠肌的外侧，在股内侧和股直肌内侧，血管周围的脂肪.解剖解剖时,在17/22肢体中，整个染料溶液分布被分级为完整，表明成功率为77.3％[95％CI（0.598，0.948）]，3/22肢体部分，2/22肢体失败。
结论：这项研究的成功率表明了采用超声引导技术对山羊进行隐神经阻滞的可行性。然而,在临床患者实施之前,建议进行进一步的体内研究,以评估该块的临床疗效.
