Document Detail

T wave alternans in idiopathic long-QT syndrome: insight from body surface mapping.
MedLine Citation:
PMID:  8823845     Owner:  NLM     Status:  MEDLINE    
Body surface mapping was recorded during T wave alternans in two patients with idiopathic long QT syndrome. Eighty-seven lead ECGs of two consecutive beats during T wave alternans demonstrated that alternating changes in the morphology and polarity of the T wave existed mainly in the left frontal chest. The QRST isointegral maps of the same two consecutive beats showed alternation of a large negative area appearing mainly in the left frontal chest. These results indicate that T wave alternans in the two patients were related to alternate heterogeneous prolongation of the action potential duration in this region.
W Shimizu; S Kamakura; Y Arakaki; T Kamiya; K Shimomura
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  19     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  1996 Jul 
Date Detail:
Created Date:  1996-12-10     Completed Date:  1996-12-10     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  7803944     Medline TA:  Pacing Clin Electrophysiol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1130-3     Citation Subset:  IM    
Department of Internal Medicine, National Cardiovascular Center, Osaka, Japan.
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MeSH Terms
Action Potentials / physiology
Body Surface Potential Mapping*
Child, Preschool
Heart Conduction System / physiopathology
Long QT Syndrome / diagnosis*,  physiopathology

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

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