Electrocardiographic Changes in a Case of Left Ventricular and Septal Hypertrophy

In certain instances of left ventricular hypertrophy, deep Q waves observed in the piecordial electrocardiograni miay resemble those of anterior mvocardial infaretion. Such a case is reported in a patient with syphilitic aortic insufficiency. Pathologic examination ruled out the diagnosis of infarction and revealed marked hypertrophy of left ventricular wall and the interventricular septum. The latter was of unusual degree and was probably responsible for the presence of large Q waves in precorldial leads representing, the normal activation of the upper part of the interventricular septum which in cases of septal hypertrophy presumably originates a vector of greater magnitude.