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Vagal Influence on Intraventricular Conduction

GORDON E. HEIN, M.D.; PAUL J. SANAZARO, M.D.

AMA Arch Intern Med. 1951;87(5):694-706.

	Since this article does not have an abstract, we have provided the first 150 words of the full text PDF and any section headings.

NONPERMANENT bundle branch block is a frequent electrocardiographic finding. Lewis¹ recorded it first, and the literature concerning it has been reviewed by Sabathié,² Rasario,³ Yater⁴ and Comeau and associates.⁵ Numerous synonyms have been applied to this condition, each synonym indicating somewhat different circumstances of occurrence. The terms transient,⁶ paroxysmal,⁷ incomplete,⁸ inconstant⁹ and functional¹⁰ have been applied to the brief episodes of impaired bundle branch conduction appearing in the course of tachycardia or auricular arrhythmias,¹¹ coronary occlusion or insufficiency,¹² congestive heart failure,¹³ thyrotoxicosis,¹⁴ pulmonary embolism,¹⁵ infectious diseases,¹⁶ uremia,¹⁷ congenital heart disease,¹⁸ transient hypertension¹⁹ and quinidine or digitalis administration.²⁰ Infrequently there is no detectable cardiac disease.²¹ When no cardiac disease exists, the block has been designated "functional bundle branch block," a term also applied to the Wolff-Parkinson-White syndrome.²² For clarity, the discussion which follows excludes specifically the consideration of the last-named entity.

Intrinsic heart disease is present in . . . [Full Text PDF of this Article]

Author Affiliations
SAN FRANCISCO

Footnotes
Dr. Hein is Chief of Medical Service, Veterans Administration Hospital, and Clinical Professor of Medicine, University of California Medical School.

Dr. Sanazaro is Resident in Medicine, Veterans Administration Hospital.

Reviewed in the Veterans Administration and published with the approval of the Chief Medical Director. The statements and conclusions published by the authors are the result of their own study and do not necessarily reflect the opinion or policy of the Veterans Administration.

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