Geernaert K, Hody J L, Adriaensen H, Van Steenberge A
Department of Anaesthesia, University Hospital Antwerp, Wilrijkstraat 10, Belgium B-2650 Edegem, Belgium.
Eur J Anaesthesiol. 1993 Sep;10(5):349-51.
Seventy patients (ASA I, ASA II), scheduled for a surgical intervention under epidural or combined spinal-epidural anaesthesia, were randomly allocated to one of two groups. The epidural space was identified by loss of resistance using air, followed by injection in Group A (35 patients) of 10 ml of physiological saline directed cephallad and in Group B (35 patients) by no injection. Thereafter an anaesthetist, different to the one who placed the Tuohy in the epidural space, advanced a catheter up to 10 cm into the epidural space. At each cm of advance the resistance was judged. No significant difference in resistance was found between the groups. The authors conclude that the injection of 10 ml of physiological saline into the epidural space does not facilitate the advancement of an epidural catheter.
70例（ASA I级、ASA II级）计划在硬膜外或腰麻-硬膜外联合麻醉下进行手术干预的患者被随机分为两组。使用空气通过阻力消失法确定硬膜外间隙，然后A组（35例患者）向头端注入10ml生理盐水，B组（35例患者）不进行注射。此后，由一位与在硬膜外间隙放置Tuohy针的麻醉医生不同的麻醉医生，将一根导管推进硬膜外间隙达10cm。在推进的每1cm处判断阻力。两组之间在阻力方面未发现显著差异。作者得出结论，向硬膜外间隙注入10ml生理盐水并不能促进硬膜外导管的推进。
