Evaluation of postextrasystolic T wave alterations in identification of patients with coronary artery disease or left ventricular dysfunction

American Heart Journal
D R LeachmanL D Hillis

Abstract

This study was performed (1) to assess the value of postextrasystolic T wave alterations in identification of patients with cardiac disease and (2) to determine if their frequency depends on length of compensatory pause. In 52 patients a pacing catheter was placed in the right ventricular (RV) apex, and premature beats were programmed to occur 30 msec beyond RV refractory period. Postextrasystolic T wave alterations occurred in 32 patients, 13 with an 19 without coronary artery disease (CAD) (NS). Such alterations were also not related to presence of abnormal left ventricular (LV) ejection fraction (less than 0.55) or end-diastolic pressure (greater than 12 mm Hg). In 33 patients, premature beats were also introduced 330 msec beyond the RV refractory period to compare effects of long and short compensatory pauses on frequency of postextrasystolic T wave alterations. When the pause was near maximal, 18 patients had alterations in 60 ECG leads; when it was shorter, seven patients had alterations in 10 leads (p less than 0.001). Thus, judging from provoked postextrasystolic T wave alterations, such spontaneous changes appear neither sensitive nor specific in the identification of patients with cardiac disease. The frequency of pos...Continue Reading

References

Apr 1, 1977·British Heart Journal·T R EngelW S Frankl
Oct 1, 1952·Circulation·H D LEVINER B STREEPER
Apr 1, 1954·American Heart Journal·R H MANN, H B BURCHELL
May 1, 1958·The American Journal of Cardiology·I D FAGIN, J M GUIDOT

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Citations

Jan 1, 1995·Journal of Electrocardiology·R Childers
Nov 1, 2008·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Velislav N Batchvarov, A John Camm
Jun 27, 2019·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Nobuhiro TakasugiRichard L Verrier

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