Document Detail


Long-term prognostic value of dobutamine stress echocardiography in patients with atrial fibrillation.
MedLine Citation:
PMID:  11157596     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
STUDY OBJECTIVE: To assess the long-term prognostic value of dobutamine stress echocardiography (DSE) for cardiac events (cardiac death, myocardial infarction, and late revascularization) in patients with atrial fibrillation (AF). METHODS: Baseline ECGs were studied in patients undergoing DSE between 1989 and 1998. Sixty-nine patients had AF before DSE. Prognostic value of DSE in these patients was compared with a control group who had sinus rhythm (n = 1,664). The presence of stress-induced ischemia was noted for every patient. The mean follow-up period was 35 months (range, 6 to 84 months). Data are presented as hazards ratio (HR) with 95% confidence interval (CI). RESULTS: Heart rate at rest was higher in patients with AF (77 +/- 15 beats/min vs 73 +/- 14 beats/min; p = 0.04); however, double product at peak stress was not different between patients with AF and sinus rhythm (17,602 vs 17,169, respectively; p = 0.46). In patients with AF, target heart rate was achieved at a lower dobutamine dose (33 +/- 8 microg/kg/min vs 35 +/- 9 microg/kg/min; p = 0.01). Cardiac arrhythmias occurred more frequently (12% vs 5%; p = 0.001) in patients with AF during DSE. During a follow-up period of 7 years, cardiac death occurred in 5 patients, myocardial infarction in 2 patients, and late revascularization in 10 patients. Prognostic value of DSE for all late cardiac events was similar in patients with AF (HR, 3.0; 95% CI, 0.9 to 9.5) and sinus rhythm (HR, 3.4; 95% CI, 2.7 to 4.3; p = 0.85). CONCLUSION: The prognostic value of DSE for late cardiac events is maintained in patients with AF.
Authors:
D Poldermans; J J Bax; A Elhendy; F Sozzi; E Boersma; I R Thomson; L J Jordaens
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chest     Volume:  119     ISSN:  0012-3692     ISO Abbreviation:  Chest     Publication Date:  2001 Jan 
Date Detail:
Created Date:  2001-02-22     Completed Date:  2001-03-22     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  United States    
Other Details:
Languages:  eng     Pagination:  144-9     Citation Subset:  AIM; IM    
Affiliation:
Erasmus Medical Centre, Rotterdam, The Netherlands. poldermans@hlkd.azr.nl
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MeSH Terms
Descriptor/Qualifier:
Aged
Atrial Fibrillation / mortality,  ultrasonography*
Confidence Intervals
Dobutamine / diagnostic use*
Echocardiography*
Exercise Test*
Female
Follow-Up Studies
Humans
Male
Middle Aged
Myocardial Infarction / mortality,  ultrasonography
Myocardial Revascularization
Proportional Hazards Models
Risk Factors
Survival Rate
Chemical
Reg. No./Substance:
34368-04-2/Dobutamine

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


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