紧急程度低
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房室传导阻滞(AVB)是心律失常,其中心脏,心房和心室的不同腔之间的电刺激的传导发生改变。在第二度AVB中,不向心室传导一个或多个心房刺激(并非所有P波在心电图上都跟随QRS)。
有两种类型:I型(Mobitz I或Wenckebach)和II型(Mobitz II)。
在第二度BAV Mobitz I或Wenckebach中,电刺激从心房传递到心室的时间逐渐延长(PR间期增加),直到心跳被阻塞并且不会导致心室。
它可以发生在没有潜在心脏病的健康受试者和运动员中。其中最常见的原因是:先天性疾病,缺血性心脏病(心脏病发作),药物治疗和既往心脏手术。
大多数病例没有出现症状。当它引起症状时,它们是:疲劳,头晕,意识丧失,胸痛和呼吸短促。
它通过临床病史和体格检查确诊。通常进行心电图和胸部X光检查以完成研究。
治疗的目的是纠正病因并治疗症状。如果阻塞程度进展,可能需要放置心脏起搏器。
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医生 Elvira Moreno
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