The Clinical Significance of Postextrasystolic T-Wave Changes

Abstract

Examination of the T wave of the beat following the pause occurring in many conditions, notably premature systoles, may show variations from the regular T waves in the same lead without concomitant change in the QRS complex. This phenomenon, when pronounced, is generally associated with evidence of myocardial impairment and is correlated with abnormal reaction to stress tests for coronary insufficiency. Inquiry is here made into the factors affecting this phenomenon, its mechanism topography, persistency and clinical significance.