Iff I, Moens Y, Schatzmann U
Clinic of Anaesthesiology and Perioperative Intensive Care, Clinical Department of Small Animals and Horses, Veterinary University, Veterinärplatz 1, A-1210 Vienna, Austria.
Vet Rec. 2007 Jul 7;161(1):22-5. doi: 10.1136/vr.161.1.22.
An epidural puncture was performed using the lumbosacral approach in 18 dogs, and the lack of resistance to an injection of saline was used to determine that the needle was positioned correctly. The dogs' arterial blood pressure and epidural pressure were recorded. They were randomly assigned to two groups: in one group an injection of a mixture of local anaesthetic agents was made slowly over 90 seconds and in the other it was made over 30 seconds. After 10 minutes contrast radiography was used to confirm the correct placement of the needle. The mean (sd) initial pressure in the epidural space was 0.1 (0.7) kPa. After the injection the mean maximum epidural pressure in the group injected slowly was 5.5 (2.1) kPa and in the group injected more quickly it was 6.0 (1.9) kPa. At the end of the period of measurement, the epidural pressure in the slow group was 0.8 (0.5) kPa and in the rapid group it was 0.7 (0.5) kPa. Waves synchronous with the arterial pulse wave were observed in 15 of the dogs before the epidural injection, and in all the dogs after the epidural injection.
对18只犬采用腰骶部入路进行硬膜外穿刺，通过注射生理盐水时无阻力来确定针头位置正确。记录犬的动脉血压和硬膜外压力。将它们随机分为两组：一组在90秒内缓慢注射局部麻醉剂混合物，另一组在30秒内注射。10分钟后，使用造影X线摄影确认针头位置正确。硬膜外间隙的平均（标准差）初始压力为0.1（0.7）kPa。注射后，缓慢注射组的平均最大硬膜外压力为5.5（2.1）kPa，快速注射组为6.0（1.9）kPa。在测量期结束时，缓慢注射组的硬膜外压力为0.8（0.5）kPa，快速注射组为0.7（0.5）kPa。硬膜外注射前，15只犬观察到与动脉脉搏波同步的波形，硬膜外注射后所有犬均观察到该波形。
