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患者男、45岁,赴美国看望读书的女儿三周,回国后感到疲劳、头晕,关节和肌肉疼痛。体检发现下肢环状红斑,心电图见图1。试题内容本例患者房室阻滞的部位为A.房室结(AV node);B.希氏束内(Intra-His);C.希氏束以远(Infra-His);D.心室肌内(Ventricular Myocardium)正确答案:A答案分析1.二度房室阻滞本例心电图的最大特征是全帧心电图一直持续为2:1房室阻滞,体表心电图对房室阻滞诊断的优势是对阻滞程度能迅速判断,例如本帧心电图应诊断为二度房室阻滞。而心电图诊断房室阻滞的部位却
Male, 45, went to the United States to visit her daughter for three weeks and felt tired, dizzy, and had joint and muscle pain after returning home. Physical examination revealed lower limb annular erythema, ECG shown in Figure 1. Questions in this case atrioventricular block in patients with a site A. AV node; B. His bundle (Intra-His); C. His bundle far (Infra-His); D. ventricular Ventricular Myocardium Correct answer: A answer analysis 1. Second-degree atrioventricular block ECG in this case is the most prominent feature of full-frame ECG has been 2: 1 atrioventricular block, body surface ECG on the diagnosis of atrioventricular block The advantage is that the degree of block can quickly determine, for example, the frame ECG should be diagnosed as second-degree atrioventricular block. The diagnosis of atrial septal ECG site