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ARTICLE |

Prognosis of Right Bundle-Branch Block in Acute Myocardial Infarction

Lawrence Gould, MD; Kalyanasundaran Venkataraman, MD; Nur Mohammad, MD; Robert F. Gomprecht, MD
JAMA. 1972;219(4):502-503. doi:10.1001/jama.1972.03190300040012.
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Twenty-two of 31 patients with right bundle-branch block (RBBB) following acute myocardial infarction died. Right bundle branch block was present on admission in 21 cases and subsequently appeared in ten cases. Ten of 14 patients (72%) with RBBB and left anterior hemiblock died of a cardiac arrhythmia. Of the 11 patients with RBBB and left posterior hemiblock, seven died of a cardiac arrhythmia and one died of pulmonary emboli (73%, total mortality). Three (60%) of five patients with RBBB died—two with an arrhythmia and one in shock. The one patient with RBBB and prolonged PR interval died of a cardiac arrhythmia.

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The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
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