Experimental demonstration of concealed AV conduction in the human heart.

as an accepted method of treatment of StokesAdams disease, it became feasible to produce in the human heart conditions prone to reveal the phenomenon of concealed conduction. Simple experimental procedures can be applied at the bedside without danger or discomfort to the patient and various disturbances of cardiac rhythm can be reproduced at will. Such observations, some of which shed new light on the ways concealed conduction in-