O'Neil J P, Chung E K
Am J Med. 1976 Oct;61(4):537-40. doi: 10.1016/0002-9343(76)90334-x.
A unique case in which the patient had bifascicular block consisting of right bundle branch block and left posterior hemiblock as a result of marked hyperkalemia is presented. To our knowledge, this is the first reported case in which such unusual electrocardiographic abnormalities due to hyperkalemia were demonstrated. The electrocardiographic abnormalities produced by hyperkalemia in this case disappeared promptly by hemodialysis, as the serum potassium level returned to normal. It has been stressed that hyperkalemia should be considered as an important etiologic factor in the differential diagnosis of bundle branch block, hemiblocks and bifascicular block, particularly when these intraventricular blocks are produced suddenly.
本文报告了一例独特病例，患者因显著高钾血症出现右束支传导阻滞和左后分支阻滞组成的双分支阻滞。据我们所知，这是首例报道的因高钾血症导致此类异常心电图表现的病例。随着血清钾水平恢复正常，该病例中高钾血症所致的心电图异常通过血液透析迅速消失。强调在束支传导阻滞、分支阻滞和双分支阻滞的鉴别诊断中，尤其是当这些室内传导阻滞突然发生时，应将高钾血症视为重要的病因因素。
