男性,75岁,腹胀腹痛数日入院。HR106次/分,BP100/55mmHg;血气分析:PO78mmHg,PCO48mmHg,HCO19mmol/L,pH7...

作者: rantiku 人气: - 评论: 0
问题 男性,75岁,腹胀腹痛数日入院。HR106次/分,BP100/55mmHg;血气分析:PO78mmHg,PCO48mmHg,HCO19mmol/L,pH7.20;血常规检查:WBC12×10/L,Hb80g/L;诊断为嵌顿疝引起的肠梗阻。拟在硬膜外麻醉下手术,硬膜外麻醉穿刺置管顺利,回抽无血和脑脊液后注入2%利多卡因5ml。麻醉平面出现后给2%利多卡因20ml。5min后患者出现嗜睡,HR53次/分,R9次/分,BP85/40mmHg,SPO85%。 麻醉后患者出现上述情况最可能的原因是
选项 A.局麻药的高敏反应 B.对局麻药的特异质反应 C.局麻药的变态反应 D.局麻药的毒性反应 E.局麻药用量过大、阻滞平面过高导致呼吸和循环抑制
答案 E
解析

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