Respiratory Muscle Strength and Quality of Life in Patients With Heart Failure and Their Main Correlated Factors: A Cross-sectional Study.

Background: Heart failure may cause peripheral and respiratory muscle alterations, dyspnea, fatigue, and exercise intolerance, worsening the quality of life of patients.

Objectives: The aims of this study were to analyze respiratory muscle strength and quality of life of patients with heart failure and correlate them with clinical variables and functional classification.

Methods: This cross-sectional study involved patients with heart failure.

Analysis of respiratory muscle strength and its relationship with functional capacity between different field tests in patients with heart failure.

Objective: To analyze respiratory muscle strength of patients with heart failure (HF) and correlate with functional capacity.

Methods: This cross-sectional study involved patients with compensated HF of both sexes, aged above 18 years. Respiratory muscle strength was assessed by measuring maximum inspiratory (MIP) and expiratory pressures (MEP) using a manovacuometer.