Document Detail

Evidence supporting a new rate threshold for multifocal atrial tachycardia.
MedLine Citation:
PMID:  16405199     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Exacerbation of chronic obstructive pulmonary disease (COPD) is overwhelmingly represented among patients presenting with multifocal atrial tachycardia (MAT) and has been used as a paradigm for such patients. The quasidiagnostic tachycardia threshold for MAT is conventionally set at 100 beats/min. Nevertheless, this threshold has not been demonstrated to be optimal. HYPOTHESIS: Using COPD as a paradigm for MAT, clinical experience led to the hypothesis that MAT with a tachycardia threshold < 100 beats/min could be more closely associated with COPD exacerbation. METHODS AND RESULTS: We reviewed 60 consecutive patients with multifocal atrial arrhythmia (MAA) at any heart rate and found a better association between the incidence of COPD exacerbations and MAT using a tachycardia threshold of 90 beats/min (p = 0.00036) than when using a threshold of 100 beats/min (p = 0.515). CONCLUSION: The rate threshold of MAT should be reduced from 100 to 90 beats/min.
Seema A Kothari; Sirin Apiyasawat; Navaid Asad; David H Spodick
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Clinical cardiology     Volume:  28     ISSN:  0160-9289     ISO Abbreviation:  Clin Cardiol     Publication Date:  2005 Dec 
Date Detail:
Created Date:  2006-01-12     Completed Date:  2006-07-31     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7903272     Medline TA:  Clin Cardiol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  561-3     Citation Subset:  IM    
Department of Medicine, Worcester Medical Center, and Division of Cardiovascular Medicine, University of Massachusetts Medical Center, Worcester, MA 01655, USA.
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MeSH Terms
Aged, 80 and over
Analysis of Variance
Chi-Square Distribution
Heart Rate*
Pulmonary Disease, Chronic Obstructive / complications,  diagnosis*
Retrospective Studies
Risk Factors
Tachycardia, Ectopic Atrial / complications,  diagnosis*

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