Henrique Silveira Costa1, Márcia Maria Oliveira Lima2, Pedro Henrique Scheidt Figueiredo2, Ana Thereza Chaves3, Maria Carmo Pereira Nunes3, Manoel Otávio da Costa Rocha3. 1. Postgraduate Course of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Medical School and Hospital das Clinicas of the Universidade Federal de Minas Gerais (UFMG), Avenida Alfredo Balena, 190, Belo Horizonte, Minas Gerais, 30.130-100, Brazil. henriquesilveira@yahoo.com.br. 2. Healthy and Biological Sciences Faculty, Physical Therapy School, Universidade Federal dos Vales do Jequitinhonha e Mucuri (UFVJM), Diamantina, Brazil. 3. Postgraduate Course of Infectious Diseases and Tropical Medicine, Department of Internal Medicine, Medical School and Hospital das Clinicas of the Universidade Federal de Minas Gerais (UFMG), Avenida Alfredo Balena, 190, Belo Horizonte, Minas Gerais, 30.130-100, Brazil.
Abstract
PURPOSE: To verify the prognostic value of health-related quality of life (HRQoL) and the differences in HRQoL and clinical variables between groups of Chagas heart disease (CHD) patients with and without cardiovascular adverse events. METHODS: Seventy-five CHD patients were evaluated by echocardiography, maximal exercise testing, and Short-form of Health Survey (SF-36) Questionnaire. Patients were followed during 6 years. In the statistical analysis, uni- and multivariate Cox regression were performed to verify the accuracy of the HRQoL in predicting cardiovascular events. RESULTS: After the follow-up period (41 ± 12 months), 20 patients (27%) had adverse events. Those with poor outcome had lower left ventricular ejection fraction (LVEF) (p = 0.002), higher left ventricular end-diastolic diameter (LVDd) (p = 0.019), and worse scores in general health perceptions (p = 0.047), social role functioning (p = 0.026), and mental component summary (p = 0.043) of SF-36. Patients with lower LVEF (p = 0.003), higher LVDd (p = 0.022), worse HRQoL in the general heath perceptions domain (p = 0.022), and mental component summary (p = 0.031) were associated with worse prognosis. In the multivariate Cox regression, LVEF (HR 0.94, 95% CI from 0.90 to 0.98, p = 0.007) and mental component summary (HR 0.98, 95% CI from 0.94 to 1.00, p = 0.047) remained as independent predictors of adverse events in CHD patients. CONCLUSION: The assessment of HRQoL, especially the mental component, should be taken into account to provide an accurate prognosis in addition to other well-established predictors of poor outcomes in CHD patients.
PURPOSE: To verify the prognostic value of health-related quality of life (HRQoL) and the differences in HRQoL and clinical variables between groups of Chagas heart disease (CHD) patients with and without cardiovascular adverse events. METHODS: Seventy-five CHD patients were evaluated by echocardiography, maximal exercise testing, and Short-form of Health Survey (SF-36) Questionnaire. Patients were followed during 6 years. In the statistical analysis, uni- and multivariate Cox regression were performed to verify the accuracy of the HRQoL in predicting cardiovascular events. RESULTS: After the follow-up period (41 ± 12 months), 20 patients (27%) had adverse events. Those with poor outcome had lower left ventricular ejection fraction (LVEF) (p = 0.002), higher left ventricular end-diastolic diameter (LVDd) (p = 0.019), and worse scores in general health perceptions (p = 0.047), social role functioning (p = 0.026), and mental component summary (p = 0.043) of SF-36. Patients with lower LVEF (p = 0.003), higher LVDd (p = 0.022), worse HRQoL in the general heath perceptions domain (p = 0.022), and mental component summary (p = 0.031) were associated with worse prognosis. In the multivariate Cox regression, LVEF (HR 0.94, 95% CI from 0.90 to 0.98, p = 0.007) and mental component summary (HR 0.98, 95% CI from 0.94 to 1.00, p = 0.047) remained as independent predictors of adverse events in CHD patients. CONCLUSION: The assessment of HRQoL, especially the mental component, should be taken into account to provide an accurate prognosis in addition to other well-established predictors of poor outcomes in CHD patients.
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