| Signal-averaged P-wave abnormalities and atrial size in patients with and without idiopathic paroxysmal atrial fibrillation. | |
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MedLine Citation:
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PMID: 10740152 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: The relation between abnormalities in the signal-averaged P wave and atrial size has not been determined in patients with paroxysmal atrial fibrillation (PAF) without structural heart disease. METHODS: Signal-averaged electrocardiograms of P waves were recorded in 38 patients with idiopathic PAF and 34 control subjects. Filtered P-wave duration (FPD) and root-mean-square voltages for the last 20 ms of the vector magnitude were measured. Atrial volume was calculated by cine magnetic resonance imaging. RESULTS: FPD was longer (131.7 +/- 10.9 ms vs 120.8 +/- 8.6 ms, P <.0001) and root-mean-square voltage was lower (2.89 +/- 1.29 microV vs 3.62 +/- 1.48 microV, P <.05) in the PAF group than in control subjects. However, the various atrial volumes were similar in the 2 groups. In controls, FPD was significantly correlated with left (r = 0.593, P <.0001) and total (r = 0.492, P <.005) atrial volume but not with right atrial volume. In patients with PAF, no significant correlations were found between FPD and any of the atrial volumes. Elderly patients with PAF (age > or =60 years) showed longer FPD than younger patients with PAF (139.2 +/- 9.4 ms vs 125.6 +/- 8.0 ms, P <.0001). CONCLUSIONS: FPD is influenced by the left and total atrial volumes in the normal heart without PAF. Prolonged FPD seems to be a useful predictor of idiopathic PAF among patients without atrial enlargement, especially in the elderly. |
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Authors:
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N Ishimoto; M Ito; M Kinoshita |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: American heart journal Volume: 139 ISSN: 0002-8703 ISO Abbreviation: Am. Heart J. Publication Date: 2000 Apr |
Date Detail:
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Created Date: 2000-06-01 Completed Date: 2000-06-01 Revised Date: 2007-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0370465 Medline TA: Am Heart J Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 684-9 Citation Subset: AIM; IM |
Affiliation:
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First Department of Internal Medicine, Shiga University of Medical Science, Japan. ito@belle.shiga-med.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Atrial Fibrillation / diagnosis*, physiopathology Atrial Function / physiology* Cardiac Volume / physiology Electrocardiography / instrumentation* Female Heart Failure / diagnosis, physiopathology Humans Magnetic Resonance Imaging, Cine Male Middle Aged Reference Values Signal Processing, Computer-Assisted / instrumentation* Tachycardia, Paroxysmal / diagnosis*, physiopathology |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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