Document Detail


Sinus and paced P wave duration and dispersion as predictors of atrial fibrillation after pacemaker implantation in patients with isolated sick sinus syndrome.
MedLine Citation:
PMID:  15125716     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The aim of this study was to prospectively evaluate the sinus and the paced P wave duration and dispersion as predictors of AF after pacemaker implantation in patients with isolated sick sinus syndrome (SSS). The study included 109 (69 women, mean age 72 +/- 11 years) patients with SSS, 59 with bradycardia-tachycardia syndrome (BTS). A 12-lead ECG was recorded before pacemaker implantation and during high right atrial and septal right atrial pacing at 70 and 100 beats/min. The ECGs were scanned into a computer and analyzed on screen. The patients were treated with AAIR (n = 52) or DDDR pacing. The P wave duration was measured in each lead and mean P wave duration and P wave dispersion were calculated for each ECG. AF during follow-up was defined as: AF in an ECG at or between follow-up visits; an atrial high rate episode with a rate of > or =220 beats/min for > or =5 minutes, atrial sensing with a rate of > or =170 beats/min in > or =5% of total counted beats, mode-switching in >/=5% of total time recorded, or a mode switching episode of > or =5 minutes recorded by the pacemaker telemetry. The ECG parameters were correlated to AF during follow-up. Mean follow-up was 1.5 +/- 0.9 years. None of the ECG parameters differed between patients with AF and patients without AF during follow-up, nor was there any difference between groups after correction for BTS and age. BTS was the strongest predictor of AF during follow-up (P < 0.001). P wave duration and dispersion measured before and during pacemaker implantation were not predictive of AF after pacemaker implantation in patients with isolated SSS.
Authors:
Lene Kristensen; Jens Cosedis Nielsen; Peter Thomas Mortensen; Per Dahl Christensen; Thomas Vesterlund; Anders Kirstein Pedersen; Henning Rud Andersen
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Pacing and clinical electrophysiology : PACE     Volume:  27     ISSN:  0147-8389     ISO Abbreviation:  Pacing Clin Electrophysiol     Publication Date:  2004 May 
Date Detail:
Created Date:  2004-05-05     Completed Date:  2004-09-17     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:  606-14     Citation Subset:  IM    
Affiliation:
Department of Cardiology, Skejby Hospital, Aarhus University Hospital, Aarhus, Denmark.
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MeSH Terms
Descriptor/Qualifier:
Aged
Atrial Fibrillation / etiology,  physiopathology,  prevention & control*
Cardiac Pacing, Artificial*
Chi-Square Distribution
Electrocardiography
Female
Humans
Male
Predictive Value of Tests
Prospective Studies
Regression Analysis
Sick Sinus Syndrome / complications,  physiopathology*,  therapy

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


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