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临床上遇到部分患者的第一度和/或第二度Ⅰ型房室传导阻滞,可随体位的改变或出现或消失,现报告,男4例,女1例,年龄16～40岁。均因漏搏为唯一和首发症状.经实验室检查,心电图、X线等检查未发现心脏有器质性改变,因而诊为体位性房室传导阻滞——迷走神经张力增强或改变所致。讨论:一,命名:第二度房宝传导阻滞从心电图上可分为莫氏Ⅰ型和莫氏Ⅱ型:在Ⅰ型中又可观察到可具典型的文氏现象和不典型的文氏现象。近年来经电生理学和希氏束电图的研究,Ⅰ型阻滞部位在希氏束分叉以上(主要在房室结或希氏束近端),Ⅱ型阻滞部位在希氏束远端,两者在病理意义上不同,预后也不一样,Ⅰ型的预后较好。本文5例心电图的共同特点是:平卧时表现为第二度Ⅱ型房室传导阻滞,改坐位时变为第一度房室传导阻滞,在站立位,运动或投与阿托品类药物后可恢复成正常心电图。经过多
Part of the clinical encounter some patients with the first and / or second degree of type Ⅰ atrioventricular block, with the position may change or appear or disappear, it was reported that 4 males and 1 females, aged 16 to 40 years old . Due to leakage of stroke as the only and first symptom.After laboratory tests, ECG, X-ray examination found no organic changes in the heart, which diagnosed as atrioventricular block - vagus tone enhancement or change. Discussion: First, the name: the second room treasure block can be divided from the ECG on the Mohs Ⅰ and Mohs Ⅱ type: in type I can be observed with typical Wen’s phenomenon and atypical Wen ’S phenomenon In recent years, electrophysiology and His bundle beam study, type Ⅰ block in the His bundle branch above (mainly in the atrioventricular node or His bundle proximal), type Ⅱ block in the His bundle distal , Both in the pathological differences, the prognosis is not the same, type Ⅰ prognosis is better. In this paper, 5 cases of common characteristics of ECG is: supine performance for the second degree of type Ⅱ atrioventricular block, change the position becomes the first atrioventricular block, in standing position, exercise or after administration of atropine drugs Can be restored to normal ECG. After more