患者术前血压170/100mmHg,心率84次/分,在异氟烷吸入麻醉下胃癌根治术。诱导后当异氟烷浓度达1.6MAC时。血压降至95/50mmHg,心率为1...

作者: rantiku 人气: - 评论: 0
问题 患者术前血压170/100mmHg,心率84次/分,在异氟烷吸入麻醉下胃癌根治术。诱导后当异氟烷浓度达1.6MAC时。血压降至95/50mmHg,心率为118次/分,ECG出现多个室性早搏。 此时首先应作哪项处理 ( )
选项 A、静注2%利多卡因1~2mg/kg B、先减浅麻醉,再视情况给予升压和抗心律失常治疗 C、静注麻黄碱15mg,必要时连续追加 D、立即静滴多巴胺5~1Oμg/(kg·min) E、立即加快输液,扩充血容量
答案 B
解析

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