Tachycardia of ventricular origin is an uncommon condition, and the number of reported cases is comparatively small. Butterfield and Hunt,1 Cohn,2 Gallavardin,3 Hart,4 Lewis,5 Marvin and White,6 Robinson and Herrmann,7 Scott,8 Vaughan,9 and Willius10 have reported examples of such tachycardias. Scott, who reviewed the subject in 1922, doubted whether certain cases reported as ventricular tachycardia were correctly diagnosed, and states that, of twenty cases reported up to that time, the evidence is not convincing in more than half. Wolferth and McMillan,11 in 1923, collected reports of twenty-two cases, which they regarded as examples of true ventricular paroxysmal tachycardia.
Lewis has pointed out that the ventricular type of electrocardiogram is not necessarily due to paroxysmal tachycardia of ventricular origin, since a similar picture is produced when the excitation wave takes an abnormal course in the ventricle. One case of Marvin