Inglis A, Daniel M, McGrady E
Department of Anaesthesia, Bellshill Maternity Hospital, Bellshill, Lanarkshire.
Anaesthesia. 1995 Apr;50(4):363-5. doi: 10.1111/j.1365-2044.1995.tb04620.x.
Forty women presenting for elective Caesarean section under spinal anaesthesia were randomly assigned to have anaesthesia induced in either the sitting or right lateral positions; 2.5 ml 0.5% hyperbaric bupivacaine was injected over 10 s before the mother was placed in a supine position with a 20 degree lateral tilt. The onset time and height of the subsequent analgesic and anaesthetic block was measured. It took longer to site spinal needles in the lateral position (240 vs 115 s, p < 0.001). There was a faster onset of sensory block to the sixth thoracic dermatomal level (8 vs 10 min, p < 0.001), in the lateral group, although onset time to T4 was comparable. There was no difference in maximum block height or degree of motor block. Mothers in the lateral group required more ephedrine in the first 10 m after siting the spinal (13.5 vs 10.5 mg, p < 0.05).
40名接受脊髓麻醉下择期剖宫产的女性被随机分配，分别在坐位或右侧卧位诱导麻醉；在母亲以20度侧卧位仰卧之前，于10秒内注射2.5毫升0.5%的重比重布比卡因。测量随后镇痛和麻醉阻滞的起效时间和高度。在侧卧位放置脊髓穿刺针所需时间更长（240秒对115秒，p<0.001）。侧卧位组感觉阻滞至第六胸髓节段水平的起效更快（8分钟对10分钟，p<0.001），尽管至T4的起效时间相当。最大阻滞高度或运动阻滞程度无差异。侧卧位组的母亲在脊髓穿刺后的前10分钟需要更多麻黄碱（13.5毫克对10.5毫克，p<0.05）。
