In these two studies by the same Japanese group (7, 8), the enhanced pressor effects of ephedrine and phenylephrine foll在这两个研究中[7，8]，麻黄素和苯肾上腺素在使用α-2受体激动剂（可乐定）后的升压效果增强在清醒和麻醉（安氟醚和笑气）病人没有差别。