Document Detail

Comparative value of NYHA functional class and quality-of-life questionnaire scores in assessing heart failure.
MedLine Citation:
PMID:  19952769     Owner:  NLM     Status:  In-Process    
PURPOSE: To assess the relationships between New York Heart Association (NYHA) functional class, quality of life, aerobic capacity (peak oxygen uptake, (.)VO2), ventilatory efficiency (minute ventilation/carbon dioxide production slope, VE/(.)VCO2 slope), and brain natriuretic peptide (BNP) in creating a model for predicting peak (.)VO2).
METHODS: Cardiopulmonary exercise testing was performed in 62 patients. A baseline blood sample was taken to measure the N-terminal prohormone BNP (NT-proBNP). Patients also completed the Minnesota Living with Heart Failure Questionnaire (MLHF) and the Specific Activity Questionnaire (SAQ), and NYHA functional class was determined.
RESULTS: NYHA functional class correlated more strongly with SAQ score than with MLHF score. Peak (.)VO2 and VE/(.)VCO2 slope had stronger associations with NYHA functional class and SAQ score than with MLHF score. NT-proBNP plasma levels correlated more significantly with NYHA functional class and SAQ score (both P < .001) than with MLHF score. Using multiple linear regression analysis adjusted for age and sex, SAQ score, NT-proBNP, and etiology of heart failure had significant independent relationships with peak (.)VO2, explaining 63% of its variability (adjusted R(2) = 0.596).
CONCLUSIONS: Cardiopulmonary exercise variables and plasma NT-proBNP are associated more with NYHA functional class and SAQ score than with MLHF score. When combined, SAQ score, NT-proBNP, and etiology of heart failure can satisfactorily predict peak oxygen uptake.
Leonidas V Athanasopoulos; Athanasios Dritsas; Helen A Doll; Dennis V Cokkinos
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of cardiopulmonary rehabilitation and prevention     Volume:  30     ISSN:  1932-751X     ISO Abbreviation:  J Cardiopulm Rehabil Prev     Publication Date:    2010 Mar-Apr
Date Detail:
Created Date:  2010-03-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101291247     Medline TA:  J Cardiopulm Rehabil Prev     Country:  United States    
Other Details:
Languages:  eng     Pagination:  101-5     Citation Subset:  IM    
1st Cardiology Department, Onassis Cardiac Surgery Center, Athens, Greece.
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