PMID- 37955376 OWN - NLM STAT- Publisher LR - 20231113 IS - 1550-5049 (Electronic) IS - 0889-4655 (Linking) DP - 2023 Nov 13 TI - Respiratory Muscle Strength and Quality of Life in Patients With Heart Failure and Their Main Correlated Factors: A Cross-sectional Study. LID - 10.1097/JCN.0000000000001062 [doi] AB - 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. A manovacuometer assessed maximum inspiratory and expiratory pressures, and quality of life was assessed using the Minnesota Living with Heart Failure Questionnaire. Functional classification was categorized according to the New York Heart Association (NYHA) class in I, II, III, or IV. RESULTS: We included 60 patients (66.7% male) with a mean age of 62.0 years and mean left ventricular ejection fraction of 42.0%. Maximum inspiratory pressure and maximum expiratory pressure were close to normal (>70% of predicted) in most patients; however, a subgroup composed mostly of patients with dilated heart failure and NYHA class III (n = 21) presented low maximum inspiratory pressure values (59.2%; 95% confidence interval, 55.7%-62.8%). The mean total score of the Minnesota Living with Heart Failure Questionnaire was 44.4 points, being negatively correlated with left ventricular ejection fraction (r = -0.29, P = .02). Patients with NYHA class III and disease duration longer than 120 months presented higher total (P < .01) and physical dimension scores. CONCLUSIONS: Most patients had respiratory muscle strength close to normal; however, those with dilated heart failure and NYHA class III presented low maximum inspiratory pressure values. Quality of life was moderately compromised, mainly because of long disease duration, NYHA class III, and low left ventricular ejection fraction. CI - Copyright (c) 2023 Wolters Kluwer Health, Inc. All rights reserved. FAU - de Noronha, Isis Marinho AU - de Noronha IM AUID- ORCID: 0000-0003-4165-0635 FAU - Almeida, Larisse Xavier AU - Almeida LX AUID- ORCID: 0000-0001-6781-5595 FAU - de Souza Silva Andrade, Nina Vitoria AU - de Souza Silva Andrade NV AUID- ORCID: 0000-0001-8793-5260 FAU - de Franca, Eduardo Eriko Tenorio AU - de Franca EET AUID- ORCID: 0000-0001-9207-2180 FAU - de Morais Lima, Jose Heriston AU - de Morais Lima JH AUID- ORCID: 0000-0002-0176-6222 FAU - Pedrosa, Rafaela AU - Pedrosa R AUID- ORCID: 0000-0001-9858-2990 FAU - Siqueira, Fernanda AU - Siqueira F AUID- ORCID: 0000-0003-0705-7854 FAU - Onofre, Tatiana AU - Onofre T AUID- ORCID: 0000-0003-4985-1466 LA - eng PT - Journal Article DEP - 20231113 PL - United States TA - J Cardiovasc Nurs JT - The Journal of cardiovascular nursing JID - 8703516 SB - IM COIS- The authors have no funding or conflicts of interest to disclose. EDAT- 2023/11/13 12:44 MHDA- 2023/11/13 12:44 CRDT- 2023/11/13 08:03 PHST- 2023/11/13 12:44 [medline] PHST- 2023/11/13 12:44 [pubmed] PHST- 2023/11/13 08:03 [entrez] AID - 00005082-990000000-00148 [pii] AID - 10.1097/JCN.0000000000001062 [doi] PST - aheadofprint SO - J Cardiovasc Nurs. 2023 Nov 13. doi: 10.1097/JCN.0000000000001062.