Noninvasive Ventilation Accelerates Oxygen Uptake Recovery Kinetics in Patients With Combined Heart Failure and Chronic Obstructive Pulmonary Disease

Purpose: Oxygen uptake () recovery kinetics appears to have considerable value in the assessment of functional capacity in both heart failure (HF) and chronic obstructive pulmonary disease (COPD). Noninvasive positive pressure ventilation (NIPPV) may benefit cardiopulmonary interactions during exercise. However, assessment during the exercise recovery phase is unclear. The purpose of this investigation was to explore the effects of NIPPV on , heart rate, and cardiac output recovery kinetics from high-intensity constant-load exercise (CLE) in patients with coexisting HF and COPD. Methods: Nineteen males (10 HF/9 age- and left ventricular ejection fraction-matched HF-COPD) underwent 2 high-intensity CLE tests at 80% of peak work rate to the limit of tolerance (Tlim), receiving either sham ventilation or NIPPV. Results: Despite greater recovery kinetics on sham, HF-COPD patients presented with a faster exponential time constant τ (76.4 ± 14.0 sec vs 62.8 ± 15.2 sec, P
Source: Journal of Cardiopulmonary Rehabilitation - Category: Rehabilitation Tags: Pulmonary Rehabilitation and Heart Failure Source Type: research