Prediction of maximal oxygen consumption by six minute walk testing in patients with congestive heart failure

Assessment of oxygen uptake during the six-minute walk test in patients with heart failure.

Heart Rate Recovery in the First Minute at the Six-Minute Walk Test in Patients with Heart Failure

BACKGROUND Heart rate recovery at one minute of rest (HRR1) is a predictor of mortality in heart failure (HF), but its prognosis has not been assessed at six-minute walk test (6MWT) in these patients. OBJECTIVE This study aimed to determine the HRR1 at 6MWT in patients with HF and its correlation with six-minute walk distance (6MWD). METHODS Cross-sectional, controlled protocol with 161 ind...

Reliability, validity, and responsiveness of the six-minute walk test in patients with heart failure.

BACKGROUND Our purpose was to evaluate the reliability, validity, and responsiveness of the 6-minute walk test (6MWT) in patients with heart failure (HF) enrolled in the Randomized Evaluation of Strategies for Left Ventricular Dysfunction (RESOLVD) pilot study. METHODS A total of 768 patients was enrolled in a multicenter randomized clinical trial evaluating the effect of candesartan, enalapr...

Effects of cardiovascular drugs on oxygen consumption/oxygen delivery relationship in patients with congestive heart failure.

The oxygen consumption (VO2)/oxygen delivery (DO2) relationship was analyzed in ten patients with severe congestive heart failure (CHF) and normal blood lactate levels. First dobutamine and then enoximone, after a washout period, were administered to each patient to increase cardiac output by at least 15 percent. Similar increases in DO2 were obtained with both drugs: from 285 +/- 46 to 393 +/-...

The six-minute walk test predicts peak oxygen uptake and survival in patients with advanced heart failure.

BACKGROUND The 6-min walk test (6'WT) is a simple measure of functional capacity and predicts survival in patients with moderate heart failure (HF). METHODS To assess the role of the 6'WT in the evaluation of patients with advanced HF, 45 patients (age 49 +/- 8 years, mean +/- SD; New York Heart Association class 3.3 +/- 0.6; left ventricular ejection fraction 0.20 +/- 0.06; right ventricular...