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Contribution of peak respiratory exchange ratio to peak VO2 prognostic reliability in patients with chronic heart failure and severely reduced exercise capacity.

Abstract：

BACKGROUND:We evaluated the influence of peak respiratory exchange ratio (pRER), as an index of effort adequacy, on peak VO2 prognostic reliability in patients with chronic heart failure (CHF) and reduced exercise capacity, whose peak VO2 may be underestimated because of poor patient motivation. METHODS:A cardiopulmonary exercise test was performed in 570 patients with CHF (age 60 +/- 10 years, ejection fraction 26% +/- 7%, New York Heart Association class 2.2 +/- 0.6), 193 of whom had a peak VO2 that was >10 but 10 but or=1.15 had a 2-year survival rate of 52%, and this pRER value (but not >or=1, >or=1.05, or >or=1.10) was the only independent predictor of the composite end point (chi(2) = 4.73, P =.03). Conversely, in the group of patients with a peak VO2 10 but

journal_name

Am Heart J

journal_title

American heart journal

authors

Mezzani A,Corrà U,Bosimini E,Giordano A,Giannuzzi P

doi

10.1016/S0002-8703(03)00100-5

subject

Has Abstract

pub_date

2003-06-01 00:00:00

pages

1102-7

issue

6

eissn

0002-8703

issn

1097-6744

pii

S0002870303001005

journal_volume

145

pub_type

杂志文章

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