How Patients With Heart Failure Perform Daily Life Activities: An Innate Energy-Saving Strategy.

Circulation. Heart Failure
Massimo MapelliPiergiuseppe Agostoni

Abstract

Cardiopulmonary exercise test and 6-minute walking test are frequently used tools to evaluate physical performance in heart failure (HF), but they do neither represent activities of daily living (ADLs) nor fully reproduce patients' symptoms. We assessed differences in task oxygen uptake, both as absolute value and as percentage of peak oxygen consumption (peakVO2), ventilation efficiency (VE/VCO2 ratio), and dyspnea intensity (Borg scale) in HF and healthy subjects during standard ADLs and other common physical actions. Healthy and HF subjects (ejection fraction <45%, stable conditions) underwent cardiopulmonary exercise test. All of them, carrying a wearable metabolic cart, performed a 6-minute walking test, two 4-minute treadmill exercises (at 2 and 3 km/h), and ADLs: ADL1 (getting dressed), ADL2 (folding 8 towels), ADL3 (putting away 6 bottles), ADL4 (making a bed), ADL5 (sweeping the floor for 4 minutes), ADL6 (climbing 1 flight of stairs carrying a load). Sixty patients with HF (age 65.2±12.1 years; ejection fraction 30.4±6.7%, peakVO2 14.2±4.0 mL/[min·kg]) and 40 healthy volunteers (58.9±8.2 years, peakVO2 28.1±7.4 mL/[min·kg]) were enrolled. For each exercise, patients showed higher VE/VCO2 ratio, percentage of peakVO2, ...Continue Reading

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Citations

Nov 18, 2020·Circulation. Heart Failure·Emil Wolsk, Finn Gustafsson
Nov 18, 2020·Circulation. Heart Failure·Massimo MapelliPiergiuseppe Agostoni

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