PDF(Pubmed)
Abstract：
The Objective of the present study was to evaluate paravertebral brachial plexus block in sheep. A group of 13 healthy sheep with 20.10 ± 2.20 kg weight and five months of age were used. In phase I, in five sheep, an insulated needle attached to a nerve stimulator was directed to the location of C6, C7, C8 and T1 nerves and a 1.50 mL of a solution containing 1:1 methylene blue 1.00% and lidocaine 1.00% was injected at each site. Then, the cervical and thoracic areas were dissected and assessed in the cadavers. In phase II, cervical paravertebral block with 2.00% lidocaine and subsequent assessments were done in eight live sheep. Cadaveric evaluations revealed dye spread in C6 to T1 nerves: 61.75 ± 5.50, 72.75 ± 9.18, 40.75 ± 2.99 and 18.75 ± 3.30 mm, respectively. In three sheep, dye distribution in the anterior mediastinum was observed. In phase II, the onsets of anesthesia were determined within 10 and 15 min for sensory and motor blocks, respectively. Anesthesia at axillary, musculocutaneous, radial and ulnar skin sites and motor block lasted for 67.50 ± 15.80, 63.70 ± 16.00, 55.00 ± 21.70, 56.70 ± 19.70 and 76.40 ± 24.30 min, respectively. In three sheep, no anesthesia was observed for radial and ulnar skin sites. In conclusion, paravertebral brachial plexus block in sheep provided an acceptable block for the upper parts of the elbow joint, however, it was not effective and reliable for more distal structures.
摘要：
本研究的目的是评估绵羊的椎旁臂丛神经阻滞。使用一组13只健康绵羊，体重为20.10±2.20kg，年龄为5个月。在第一阶段,五只羊，将连接到神经刺激器的绝缘针指向C6,C7,C8和T1神经的位置,并在每个部位注射1.50mL含有1:1亚甲蓝1.00%和利多卡因1.00%的溶液.然后，在尸体中解剖并评估了颈部和胸部区域。在第二阶段,在8只活羊中使用2.00%利多卡因进行颈椎旁阻滞,随后进行评估.尸体评估显示染料在C6至T1神经中扩散：61.75±5.50、72.75±9.18、40.75±2.99和18.75±3.30mm，分别。三只羊，染料分布在前纵隔观察。在第二阶段,在10和15分钟内确定感觉和运动阻滞的麻醉开始，分别。腋窝麻醉，肌肉皮肤，桡骨和尺骨皮肤部位和运动阻滞持续67.50±15.80、63.70±16.00、55.00±21.70、56.70±19.70和76.40±24.30min，分别。三只羊，没有观察到桡骨和尺骨皮肤部位的麻醉。总之,绵羊的椎旁臂丛神经阻滞为肘关节的上部提供了可接受的阻滞，然而,对于更多的远端结构，它不是有效和可靠的。
