Langton Sean D, Walker Joshua J A
Department of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Department of Veterinary Medicine, University of Cambridge, Cambridge, UK.
Vet Anaesth Analg. 2017 Jan;44(1):173-177. doi: 10.1111/vaa.12381. Epub 2017 Feb 23.
To describe a transorbital approach to the maxillary nerve block in dogs and compare it with a traditional approach.
Prospective, randomized controlled study.
Heads from 17 euthanized dogs (10 Greyhounds, three Border Collies and four of mixed breed).
A volume of 1 mL of methylene blue dye was injected by each of two techniques, a traditional percutaneous approach and a transorbital approach to the maxillary nerve block. Both techniques were used on each head, alternating the left and right sides after random assignment to the first head. The heads were dissected to reveal the maxillary nerve and the length of nerve stained was measured.
There was no significant difference (p = 0.67) in the proportion of nerves stained for a length >6 mm by either technique (88.2% transorbital versus 82.3% percutaneous). The mean length of nerve stained did not differ significantly between the techniques (p = 0.26).
The transorbital approach to the maxillary nerve block described here presents a viable alternative to the traditional percutaneous approach. Further study is required to confirm its efficacy and safety under clinical conditions.
描述一种用于犬上颌神经阻滞的经眶入路，并将其与传统入路进行比较。
前瞻性随机对照研究。
17只安乐死犬的头部（10只灵缇犬、3只边境牧羊犬和4只混血犬）。
通过两种技术分别注射1 mL亚甲蓝染料，即传统的经皮入路和上颌神经阻滞的经眶入路。两种技术均应用于每个头部，在随机分配到第一个头部后，左右两侧交替进行。解剖头部以显露上颌神经，并测量染色神经的长度。
两种技术染色长度>6 mm的神经比例无显著差异（p = 0.67）（经眶入路为88.2%，经皮入路为82.3%）。两种技术染色神经的平均长度无显著差异（p = 0.26）。
本文所述的上颌神经阻滞经眶入路是传统经皮入路的一种可行替代方法。需要进一步研究以证实其在临床条件下的有效性和安全性。
