硬膜外阻滞前后对瓦尔萨尔瓦动作的反应。
Response to a Valsalva manoeuvre before and after epidural block.
作者信息
Weaver J B, Pearson J F, Rosen M
出版信息
Anaesthesia. 1977 Feb;32(2):148-53. doi: 10.1111/j.1365-2044.1977.tb11584.x.
In pregnant patients at term the cardiovascular response to a Valsalva manoeuvre has been evaluated in the lateral and supine positions, before and after epidural block (T8-S5). There was no difference in the pattern of response under these four conditions. After epidural block, there was a tendency to a greater degree of hypotension and a slower recovery. In labour such repeated hypotension could account for the increase in fetal acidosis when the second stage of labour is conducted in the supine position.
对于足月妊娠患者，已评估了硬膜外阻滞（T8-S5）前后在侧卧位和仰卧位时瓦尔萨尔瓦动作的心血管反应。在这四种情况下，反应模式没有差异。硬膜外阻滞后，有出现更大程度低血压和恢复较慢的趋势。在分娩过程中，当第二产程采取仰卧位时，这种反复出现的低血压可能是胎儿酸中毒增加的原因。
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