Inspecting ventricular depolarization and early repolarization for signs of ischemia or hypertrophy.

Analyzing atrial activity and the delay before ventricular activation.

Beyond the ECG, he is eponymous for the Schamroth Window Test , a simple clinical maneuver to detect finger clubbing (indicative of underlying cardiopulmonary disease) which he described while observing his own illness.

Schamroth’s teaching emphasized a rather than mere pattern recognition. His method involves evaluating: