Why the study?
Heart failure causes respiratory muscle alterations, dyspnea, fatigue, and exercise intolerance, worsening quality of life, but how respiratory muscle strength and quality of life correlate with clinical variables and functional classification needed analysis.
Population
60 patients with heart failure
Design
Cross-sectional study
Key result
In patients with heart failure, quality of life was negatively correlated with left ventricular ejection fraction (r = -0.29, P = 0.02), and NYHA class III was associated with lower inspiratory pressures.
Authors
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Correlations of respiratory muscle strength with QoL and clinical variables in HF are hypothesis-generating; prospective studies needed before clinical relevance.
Cross-Sectional (n=60)
Effect estimate: r = -0.29
p-value: p=0.02
In patients with heart failure, quality of life is moderately compromised and correlates with lower LVEF, longer disease duration, and NYHA class III, which is also associated with reduced inspiratory muscle strength.
Noronha et al. (2023) conducted a cross-sectional in heart failure (n=60). Clinical variables (LVEF, NYHA class, disease duration) was evaluated on Quality of life (Minnesota Living with Heart Failure Questionnaire score) and respiratory muscle strength (r = -0.29, p=0.02). In patients with heart failure, quality of life was negatively correlated with left ventricular ejection fraction (r = -0.29, P = 0.02), and NYHA class III was associated with lower inspiratory pressures.
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