Document Detail

Ambulatory ventricular tachycardia: characteristics of the initiating beat.
MedLine Citation:
PMID:  6650354     Owner:  NLM     Status:  MEDLINE    
One hundred ten 24-hour Holter ECG recordings from 82 ambulatory patients with 341 episodes of ventricular tachycardia (VT) were analyzed. Most VT was precipitated by ventricular premature beats (VPBs) with prematurity indices (coupling interval/QT) between 1.0 and 2.0. However, a disproportionate number of VPBs initiating VT occurred early and late in the cardiac cycle compared with isolated VPBs. VT rate was not related to preceding heart rate, but faster basic rates appeared to protect against VT of extended duration. Approximately 80% of episodes of VT were initiated by VPB forms also seen in isolation. Of the 20% of VT initiated by a VPB of new morphology, one third occurred late in the cardiac cycle; almost none were early cycle.
B Swerdlow; P Axelrod; B Kolman; D Perry; R Mark
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Publication Detail:
Type:  Journal Article; Research Support, U.S. Gov't, P.H.S.    
Journal Detail:
Title:  American heart journal     Volume:  106     ISSN:  0002-8703     ISO Abbreviation:  Am. Heart J.     Publication Date:  1983 Dec 
Date Detail:
Created Date:  1984-01-07     Completed Date:  1984-01-07     Revised Date:  2007-11-14    
Medline Journal Info:
Nlm Unique ID:  0370465     Medline TA:  Am Heart J     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1326-31     Citation Subset:  AIM; IM    
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MeSH Terms
Ambulatory Care
Heart Rate
Heart Ventricles
Middle Aged
Tachycardia / diagnosis*
Grant Support

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