Paroxysmal Ventricular Tachycardia with Second Degree V-A Block and Reciprocal Rhythm

An instance of paroxysmal ventricular tachycardia with retrograde conduction is presented. This occurred in a patient in the terminal stage of arteriosclerotic heart disease. The electrocardiograms obtained during this period, representative portions of which are illustrated, were unique in that reciprocal beats and fusion beats were noted; the latter being unusual because of the origin and site of fusion of the impulses. A hitherto unreported abnormality of the retrograde P wave is also described and illustrated.