From the *Department of Anesthesiology and Pain Medicine, Cheju Halla General Hospital, Jeju-si, Jeju special self-governing province; †Department of Anesthesiology and Pain Medicine, Yeungnam University School of Medicine, Daegu; ‡Department of Anesthesiology and Pain Medicine, Konyang university hospital, Daejeon; §Department of Anesthesiology and Pain Medicine, Dongguk University Ilsan Hospital, Goyang; and ‖Department of Anesthesiology and Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, South Korea.
Anesth Analg. 2014 Apr;118(4):874-8. doi: 10.1213/ANE.0000000000000143.
We investigated whether medial cord stimulation is inferior to posterior cord stimulation for vertical infraclavicular block with respect to block success.
Ninety-six patients scheduled for upper limb surgery were randomly elicited a medial or posterior cord response for infraclavicular block using 40 mL of 0.5% ropivacaine. We assessed block success (complete sensory block of the 5 nerves in the forearm at 50 minutes) as the primary end point and block procedure characteristics and adverse events as secondary end points.
The block success rates did not differ significantly between medial and posterior cord stimulation (95.7% [44/46] vs 91.7% [44/48], 95% CI of difference, -7.4% to 15.6%), while the secondary end points were comparable in both groups.
Needle manipulation to elicit medial cord response is noninferior to posterior cord response of block success during neurostimulation-guided vertical infraclavicular block.
我们研究了在神经刺激引导下锁骨下入路阻滞中,与后索刺激相比,内侧索刺激在垂直锁骨下入路阻滞中是否会导致阻滞成功率降低。
96 例行上肢手术的患者随机接受 40ml0.5%罗哌卡因行锁骨下入路阻滞,诱发内侧或后索反应。我们将阻滞成功率(50 分钟时前臂 5 根神经的完全感觉阻滞)作为主要终点,将阻滞过程特征和不良事件作为次要终点进行评估。
内侧索刺激和后索刺激的阻滞成功率无显著差异(95.7%[44/46]vs91.7%[44/48],差异 95%置信区间为-7.4%至 15.6%),而两组的次要终点相似。
在神经刺激引导下锁骨下入路阻滞中,为诱发内侧索反应而进行的针操作与后索反应相比,在阻滞成功率方面非劣效。