Significance of newly acquired negative T waves after interruption of paroxysmal reentrant supraventricular tachycardia with narrow QRS complex. Paparella N, Ouyang F, Fuca G, Kuck KH, Cappato R, Alboni P. Am J Cardiol 2000 Jan 15;85(2):261-3   Sixty-three patients with paroxysmal supraventricular tachycardia were studied and 25 patients (39%) showed newly acquired negative T waves after tachycardia termination. Silent coronary artery disease could not be found in about 90% of these patients; moreover, age, sex, organic heart disease, and tachycardia duration and rate did not predict the appearance of negative T waves.