Since Eppinger and Rothberger, in 1910, reported their experimental work on dogs in which the right and left branches of the His bundle were severed, a large volume of literature on this subject has accumulated. In recent years several workers have analyzed case records in an effort to determine what if any are the prognostic implications of electrocardiographic evidence of bundle branch block. Among the more recent of these surveys have been those of Willius,1 King,2 Wood,3 Graybiel and Sprague4 and Sampson and Nagle.5 In 1934 Wilson and his co-workers,6 experimenting with serial precordial leads for human beings and with curves obtained after section of the right bundle branch in dogs, were able to show that certain electrocardiographic patterns, previously not fully understood, represented right bundle branch block in man. These workers7 described "electrocardiograms of an unusual type" which also were thought to be representative of right
FREUND HA, SOKOLOV R. BUNDLE BRANCH BLOCK: CRITERIA OF CLASSIFICATION, DIAGNOSIS AND PROGNOSIS; A STUDY OF TWO HUNDRED AND TEN CASES, WITH FOLLOW-UP DATA. Arch Intern Med (Chic). 1939;63(2):318–333. doi:10.1001/archinte.1939.00180190120008
Customize your JAMA Network experience by selecting one or more topics from the list below.
Create a personal account or sign in to: