Frequency and characteristics of progressive aberrancy during supraventricular tachycardia.
Progressive aberrancy (defined as beats with QRS duration and morphology between that of sinus rhythm and full aberrancy) occurred in 10 of 32 episodes of atrial pacing in 5 of 11 patients. The episodes resembled fusion beats but were due to bilateral bundle branch delay.
Betts
Tim R
TR
Division of Cardiology, Department of Cardiac Electrophysiology, Northwestern University, 251 East Huron, Chicago, IL 60611, USA.
Goldberger
Jeffrey J
JJ
Kadish
Alan H
AH
D000328:Adult; D000368:Aged; D002037:Bundle-Branch Block / Q000209:etiology* / Q000503:physiopathology*; D002304:Cardiac Pacing, Artificial / Q000009:adverse effects*; D003937:Diagnosis, Differential; D004562:Electrocardiography; D005260:Female; D006329:Heart Conduction System / Q000503:physiopathology; D006801:Humans; D008297:Male; D008875:Middle Aged; D020127:Recovery of Function / Q000502:physiology; D012189:Retrospective Studies; D013612:Tachycardia, Ectopic Atrial / Q000209:etiology* / Q000503:physiopathology*; D013617:Tachycardia, Supraventricular / Q000503:physiopathology* / Q000628:therapy*