Shimada Sachie, Shimizu Miki, Kishimoto Miori
Department of Veterinary Diagnostic Imaging, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan.
Department of Veterinary Diagnostic Imaging, Faculty of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan.
Vet Anaesth Analg. 2017 Sep;44(5):1208-1215. doi: 10.1016/j.vaa.2017.03.002. Epub 2017 Apr 12.
To determine whether an ultrasound (US)-guided femoral nerve block using a ventral suprainguinal approach could be successfully achieved in sedated dogs; to measure the time to execute the nerve block, onset time, duration, and complete block rate in sensory and motor nerves; and to examine any differences between two volumes for injection.
Blinded crossover experimental study.
A total of 10 clinically healthy adult Beagle dogs.
The femoral nerve of the right pelvic limb was infiltrated with 0.5% bupivacaine at 0.4 (treatment 0.4B) or 0.2 mL kg (treatment 0.2B), or saline at 0.4 mL kg (control) in sedated dogs. The sensory and motor nerve functions were scored on a scale of 0 (complete blockade) to 2 (normal). The onset time and duration of the sensory and motor nerve blockade were compared between treatments 0.4B and 0.2B using a Wilcoxon signed rank test. Sensory and motor nerve function scores for each of the three treatments were compared at multiple time points using a nonparametric multiple comparisons test.
The time to execute the nerve block was 2.5 ± 0.9 minutes (n = 30). For both 0.4B and 0.2B treatments, the onset times of both the sensory and motor nerve blockades were 15 minutes. The durations of the sensory nerve blockade for 0.4B and 0.2B were 9.9 ± 1.4 and 10.0 ± 1.2 hours, respectively, and those of the motor nerve blockades were 10.5 ± 1.3 and 10.2 ± 1.3 hours, respectively. No adverse effects were noted. No significant difference was observed between 0.4B and 0.2B.
A US-guided femoral nerve block using a ventral suprainguinal approach demonstrated a short onset and long duration with 0.5% bupivacaine 0.2 mL kg and can be performed under sedation in dogs.
确定在镇静犬中采用腹股沟上腹部入路的超声引导股神经阻滞能否成功实施；测量实施神经阻滞的时间、起效时间、持续时间以及感觉和运动神经的完全阻滞率；并检查两种注射容量之间的差异。
双盲交叉实验研究。
总共10只临床健康的成年比格犬。
在镇静犬中，右侧后肢股神经分别注射0.4 mL/kg的0.5%布比卡因（0.4B组）、0.2 mL/kg的0.5%布比卡因（0.2B组）或0.4 mL/kg的生理盐水（对照组）。感觉和运动神经功能按0（完全阻滞）至2（正常）进行评分。使用Wilcoxon符号秩检验比较0.4B组和0.2B组感觉和运动神经阻滞的起效时间和持续时间。使用非参数多重比较检验在多个时间点比较三种治疗方法各自的感觉和运动神经功能评分。
实施神经阻滞的时间为2.5±0.9分钟（n = 30）。对于0.4B组和0.2B组治疗，感觉和运动神经阻滞的起效时间均为15分钟。0.4B组和0.2B组感觉神经阻滞的持续时间分别为9.9±1.4小时和10.0±1.2小时，运动神经阻滞的持续时间分别为10.5±1.3小时和10.2±1.3小时。未观察到不良反应。0.4B组和0.2B组之间未观察到显著差异。
采用腹股沟上腹部入路的超声引导股神经阻滞在使用0.5%布比卡因0.2 mL/kg时起效短且持续时间长，可在犬镇静状态下进行。
