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September 1909

SPHYGMOGRAPHIC STUDY OF A CASE OF COMPLETE HEART-BLOCKA CONTRIBUTION TO THE STUDY OF THE ACTION OF STROPHANTHUS ON THE HUMAN HEART

Arch Intern Med (Chic). 1909;IV(3):238-252. doi:10.1001/archinte.1909.00050190047004
Abstract

One of the most interesting of the disturbances of cardiac function is the one known as heart-block, a condition in which the auricular and ventricular rhythms are dissociated and in which a most notable infrequency of the pulse is usually observed. The experimental work of Humblet,1 Hering,2 and of Erlanger3 on the atrioventricular bundle of His and the concomitant observation that heart-block may occur spontaneously in man have so stimulated the study of bradycardia that, within a few years, a relatively large number of cases presenting the phenomenon of auriculoventricular dissociation has been reported. Dissociation of the contractions of auricles and ventricles is most often found in patients suffering from the Adams-Stokes syndrome. There have been, however, a few undoubted cases exhibiting the symptom-complex of permanent bradycardia in association with syncopal or epileptiform attacks, in which the condition of auriculoventricular dissociation could

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