下列哪项符合典型心绞痛 ["呼吸困难伴典型心电图T波改变 ","劳累后心尖部针刺样疼痛 ","劳力时历时数分钟胸骨后压榨感 ","心前区痛含硝酸甘油5分钟后缓解 ","胸痛伴心电图胸导联ST段抬高而无衍变"] 心力衰竭引起的室性早搏，未经药物治疗应首选 ["利多卡因 ","心律平 ","奎尼丁 ","洋地黄 ","苯妥英钠"] 下列哪种情况不是应用洋地黄的适应症 ["各种原因引起的心力衰竭 ","室上性心动过速 ","快速心室率的心房颤动 ","快速心室率的心房扑动 ","室性心动过速"] 以下诊断洋地黄中毒，最为特异的心电图改变是 ["窦性心动过速 ","房扑转为房颤 ","Q-T间期缩短 ","P-R间期由0.19秒增至0.21秒 ","房性心动过速合并房室传导阻滞"] 洋地黄中毒伴缓慢性心律失常时选用 ["利多卡因 ","阿托品 ","氯化钾 ","心得安 ","异搏定"] 洋地黄中毒所致的室性早搏，治疗应首选