单词spinal-puncture
网络: 脊椎穿刺；脊椎穿剌；脊柱穿刺
The simplest explanation is that the epidural needle is not actually in the epidural space at the time of attempted spinal puncture.
最简单的解释是腰麻时硬膜外针未在硬膜外间隙。
Spinal Puncture in Minitype Dogs
小型犬脊髓穿刺技术