Functional capacity as a predictor of quality of life in heart failure

INTRODUCTION: Heart failure (HF) affects the quality of life (QoL), while metabolic and cardiopulmonary rehabilitation program (MCRP) of patients with the syndrome provides improved functional capacity (FC) and QoL. Objectives: To determine the relationship of the QoL domains with CF in patients with HF and propose cutoff points of the QoL domains by CF. MATERIALS AND METHODS: We evaluated 57 patients with HF functional, class II and III, with 37 beginners (GI) in MCRP and 20 participants (GP) with more than three-month program. QoL was evaluated by the Minnesota through the physical, emotional, and general dimension domains. The CF was determined by testing the six-minute walk (6MWT), with cutoffs defined as proposed in the literature. We used the Student t test, Pearson correlation and ROC curve analysis to answer the research objectives, considering a 5% significance. RESULTS: Participants of RCPM showed better QoL scores when compared to beginners. Significant correlations were observed between the Emotional Domain and 6MWT for both groups. There were significant cutoffs of domains of QoL arising from CF, highlighting the emotional domain (sensitivity/ specificity) for both groups. CONCLUSION: Patients with HF with more than three months MCRP showed better QoL and functional capacity than beginners. The emotional domain of Minnesota questionnaire proved to be a good predictor of cutoff point of functional capacity.

Cardiopulmonary and metabolic rehabilitation; Ventricular dysfunction; Lifestyle

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