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[Right bundle-branch block with left hemiblock in the acute phase of myocardial infarct. Prognosis and role of cardiac pacing].

Combination of a right bundle-branch block with a left hemiblock was found in 38 of 590 patients with acuts myocardial infarction admitted to an intensive care unit (5.5%) was accompanied with a lethality of 51.5%. This severe immediate prognosis seemed related more to the degree of heart failure that to the onset of atrio-ventricular block. In 15 patients a pacing catheter was set "preventively". The late prognosis of the survivors was assessed after an observation period of 15.7 months. The efficiency of temporary pacing and its indications are discussed.