Paroxysmal tachycardia after exercise

Two cases of coronary artery heart disease are presented in which the Master two-step exercise test provoked short bursts of paroxysmal tachycardia. In one patient, nodal tachycardia was present; in the other, the tachycardia was either ventricular or nodal with aberrant conduction. Difficulties in assessing the probable etiology of paroxysmal tachycardia after exercise, which appears as an isolated finding in the coronary age group, are discussed.