长脊髓穿刺针的流动特性
Flow characteristics of long spinal needles.
作者信息
Patel M, Samsoon G, Swami A, Morgan B M
机构信息
Department of Anaesthesia, Queen Charlotte's and Chelsea Hospital, London.
出版信息
Anaesthesia. 1994 Mar;49(3):223-5. doi: 10.1111/j.1365-2044.1994.tb03427.x.
A 120 mm, 27-gauge needle has recently been introduced for subarachnoid anaesthesia when using a single-space, combined spinal-extradural technique. The flow characteristics of this needle were compared with those of a 120 mm, 26-gauge needle using a pressure monitor infusion pump. Surprisingly, the resistance to fluid flow of the 26-gauge needle was twice that of the 27-gauge needle. The results of this experiment were confirmed by the findings of a clinical study undertaken in 100 obstetric patients who required regional anaesthesia. The time taken from dural puncture to appearance of cerebrospinal fluid at the hub of the needle was on average three times greater with the 26-gauge needle.
最近推出了一种120毫米、27号的针，用于在采用单间隙腰麻-硬膜外联合技术时进行蛛网膜下腔麻醉。使用压力监测输液泵将这种针的流量特性与120毫米、26号的针进行了比较。令人惊讶的是，26号针的液体流动阻力是27号针的两倍。在100名需要区域麻醉的产科患者中进行的一项临床研究结果证实了该实验结果。使用26号针时，从硬膜穿刺到脑脊液在针座处出现的平均时间要长三倍。
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