Document Detail

Relationship between QT interval duration and electrical induction of ventricular tachycardia.
MedLine Citation:
PMID:  1706854     Owner:  NLM     Status:  MEDLINE    
The relation of inducible ventricular tachycardia (VT) to QT interval duration of ventricular paced rhythm has not been evaluated. To clarify this relation we measured corrected QT interval duration (QTc) during sinus rhythm and QT interval duration during ventricular paced rhythm (QT-V) in patients with coronary artery disease without (non-VT group = group B) and with inducible VT (VT group = group A). Duration of QT-V was greater in the VT group (n = 20) compared with non-VT group (n = 20) during ventricular pacing at cycle lengths of 600 ms (424 +/- 26 vs 396 +/- 19 ms, P less than 0.01), of 500 ms (407 +/- 20 vs 383 +/- 21 ms, P less than 0.01), and of 400 ms (390 +/- 21 vs 362 +/- 17 ms, P less than 0.001). During sinus rhythm the mean values of QTc were similar in both groups (408 +/- 25 vs 413 +/- 20 ms, NS). During ventricular stimulation the percentage of patients with values of QT-V exceeding 380 ms was 35% in non-VT group and 95% in VT group (P less than 0.01) at cycle length of 500 ms and 5% versus 60%, respectively, (P less than 0.01), at cycle length of 400 ms. Thus, a trend toward longer QT values of ventricular paced rhythm exists in patients with inducible VT.
A Dabrowski; P Kolodziej; A Krupienicz
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  14     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  1991 Feb 
Date Detail:
Created Date:  1991-04-29     Completed Date:  1991-04-29     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  366-9     Citation Subset:  IM    
Central Clinical Hospital, Military School of Medicine, Warsaw, Poland.
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MeSH Terms
Cardiac Pacing, Artificial*
Coronary Disease / physiopathology
Heart Conduction System / physiopathology*
Middle Aged
Tachycardia / diagnosis*,  physiopathology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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