洋地黄的绝对禁忌证为A.右心衰竭B.舒张性心力衰竭C.无症状心力衰竭D.单纯二尖瓣狭窄伴窦性心律E.已用β受体阻滞药者

作者: rantiku 人气: - 评论: 0
问题 洋地黄的绝对禁忌证为
选项 A.右心衰竭 B.舒张性心力衰竭 C.无症状心力衰竭 D.单纯二尖瓣狭窄伴窦性心律 E.已用β受体阻滞药者
答案 D
解析 :洋地黄不宜应用的情况:洋地黄中毒时禁用;血钾低于3.5mmol/L,心率低于60次/分,预激综合征合并心房颤动;二度或高度房室传导阻滞;病态窦房结综合征,特别是老年人;单纯性舒张性心力衰竭如肥厚型心肌病;单纯性重度二尖瓣狭窄伴窦性心律而无右心衰竭的患者;急性心肌梗死,尤其在最初24小时内,除非合并心房颤动和(或)心腔扩大。

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