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Prognostic Significance of Long-Period Heart Rate Rhythms in Chronic Heart Failure.
MedLine Citation:
PMID:  22673367     Owner:  NLM     Status:  Publisher    
Background: Abnormalities in autonomic control are a feature of neuroendocrine activation in HF and are responsible for dysregulation of biological rhythms. The purpose was to investigate the presence and the prognostic significance of long-period heart rate (HR) rhythms in heart failure (HF) patients. Methods and Results: In the study, 92 HF patients were enrolled (age 53±14 years and left ventricular ejection fraction [LVEF] 37±10%). A rhythmometric analysis was used to assess the HR rhythms in 7-days (7D) Holter recordings. Rhythms properties were quantified by mesor and amplitude, in beats/min and by acrophase, in hours. Cardiac death or HF decompensation were registered. All patients had 24-h rhythm, 61 patients (77%) had 8-h rhythm, and 66 patients (83%) had 7D rhythm. Twelve patients (15%) experienced events. Among rhythm parameters only 7D median amplitude was different between patients with or without events: 1.1beats/min [0.5-1.5] vs. 2.0beats/min [0.0-3.9], P=0.049 respectively. After multivariate adjustment, LVEF (per 1%, hazard ratio 0.92, 95% confidence interval (CI) 0.87 to 0.98, P=0.01), N-terminal portion of pro-natriuretic hormone type B (per 100pg/ml, hazard ratio 1.036, 95% CI 1.005-1.069, P=0.022), and 7D amplitude of the HR ≤1.71beats/min (hazard ratio 5.4, 95% CI 1.2-34.4, P=0.047) were independent predictors of events. Conclusions: A 7D HR rhythm is present in most patients with HF, and has prognostic significance.
Francisco J Pastor-Pérez; Sergio Manzano-Fernández; Rebeca Goya-Esteban; Domingo A Pascual-Figal; Oscar Barquero-Pérez; Jose Luis Rojo-Álvarez; Estrella Everss; Maria Dolores Martinez Martinez-Espejo; Mariano Valdés Chavarri; Arcadi García-Alberola
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-6-06
Journal Detail:
Title:  Circulation journal : official journal of the Japanese Circulation Society     Volume:  -     ISSN:  1347-4820     ISO Abbreviation:  -     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-6-7     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101137683     Medline TA:  Circ J     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Department of Cardiology, Virgen de la Arrixaca University Hospital.
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