快速心律失常中最常见的发生机制是() ["儿茶酚胺释放过多","折返机制","房室旁路","心肌细胞内外阳离子的不平衡","心肌细胞自律性增高"]
女性,69岁,不慎摔倒,自觉左髋、左膝关节疼痛,不能站立、行走。查体:左下肢外旋45°;髋部无肿胀及淤血;有纵轴叩击痛;膝关节无肿胀、压痛。最应考虑的诊断是() ["粗隆间骨折","髋关节后脱位","股骨颈骨折","股骨干骨折"]
以下不属于性偏好障碍的是() ["露阴症","恋物症","异性症","摩擦症","性施虐狂与性受虐狂"]
诊断心律失常最常规的无创检查是() ["心电图","心电向量图","心音图","运动试验","超声心动图"]
心肌梗死合并下肢静脉血栓形成部分脱落,多可产生() ["脑栓塞","肾动脉栓塞","脾动脉栓塞","四肢动脉栓塞","肺动脉栓塞"]
维生素A缺乏病临床表现包括()()(),其中()最早出现,()是主要表现。