Use of Quality of Life in Cardiovascular Surgery in Coronary Artery Bypass Grafting: Validation, Reproducibility, and Quality of Life in One Year of Follow-Up.

BACKGROUND: The objectives of this study are to validate the Quality of Life in Cardiovascular Surgery (QLCS) questionnaire and to observe the evolution of quality of life in the first year of postoperative follow-up of patients who underwent coronary artery bypass grafting (CABG). METHODS: This was a prospective observational study of patients undergoing CABG from July 2016 to June 2017 who survived and answered the QLCS with 1, 6, and 12 months of follow-up. Validation was evaluated for internal consistency by Cronbach's alpha, test-retest reproducibility by correlation coefficient of concordance, and accuracy for interrater reliability by the kappa statistic. The nonparametric analysis of variance test was used for analysis of repeated measures, during follow-up, of the QLCS was considered significant at p < 0.05. RESULTS: Included were 360 patients, with a mean age of 63 years; 72% were men. Cronbach's alpha was 0.82, demonstrating adequate internal consistency. The correlation coefficient of concordance was 0.93 and accuracy 0.99, showing good precision and accuracy. The kappa statistic for questions ranged from 0.58 to 0.78, which ensures a moderate reproducibility. Scores of the QLCS in patients undergoing CABG of 17.69, 18.82, and 19.52 were found at 1, 6, and 12 months, respectively. Thus there was a progressive improvement in quality of life over the first year of follow-up (p < 0.0001). CONCLUSIONS: The QLCS proved to be a good questionnaire in this population, with adequate internal consistency and moderate reproducibility. Its use revealed a progressive and significant improvement in the quality of life of patients undergoing CABG.

Use of quality of life in cardiovascular surgery in coronary artery bypass grafting: validation, reproducibility, and quality of life in one year of follow-up

BACKGROUND: The objectives of this study are to validate the Quality of Life in Cardiovascular Surgery (QLCS) questionnaire and to observe the evolution of quality of life in the first year of postoperative follow-up of patients who underwent coronary artery bypass grafting (CABG). METHODS: This was a prospective observational study of patients undergoing CABG from July 2016 to June 2017 who was evaluated for internal consistency by Cronbach's alpha, test-retest reproducibility by correlation coefficient of concordance, and accuracy for interrater reliability by the kappa statistic. The nonparametric analysis of variance test was used for analysis of repeated measures, during follow-up, of the QLCS was considered significant at p < 0.05. RESULTS: Included were 360 patients, with a mean age of 63 years; 72% were men. Cronbach's alpha was 0.82, demonstrating adequate internal consistency. The correlation coefficient of concordance was 0.93 and accuracy 0.99, showing good precision and accuracy. The kappa statistic for questions ranged from 0.58 to 0.78, which ensures a moderate reproducibility. Scores of the QLCS in patients undergoing CABG of 17.69, 18.82, and 19.52 were found at 1, 6, and 12 months, respectively. Thus there was a progressive improvement in quality of life over the first year of follow-up (p < 0.0001). CONCLUSIONS: The QLCS proved to be a good questionnaire in this population, with adequate internal consistency and moderate reproducibility. Its use revealed a progressive and significant improvement in the quality of life of patients undergoing CABG. (AU)

Evolução da qualidade de vida dos pacientes submetidos à cirurgia de revascularização miocárdica ao longo do primeiro ano do pós-operatório / Evolution of quality of life of patients undergoing myocardial revascularization surgery during the first postoperative year

INTRODUÇÃO: O impacto de qualquer evento na qualidade de vida (QV) de uma pessoa depende de seus projetos pessoais, desejos e história. A QV relacionada à doença cardiovascular, e seu impacto na vida de cada paciente, têm sido objetos de investigação, podendo contribuir para o processo de tomada de decisão clínica, além de proporcionar a melhora do atendimento e cuidado do paciente a longo prazo, visando uma abordagem mais integral da saúde (física, psíquica e social) OBJETIVO: Avaliar a evolução da QV no primeiro ano após a realização de cirurgia de revascularização miocárdica (CRM). MÉTODO: Estudo observacional prospectivo com pacientes submetidos à CRM de julho de 2016 a dezembro de 2017, que aceitaram e assinaram o termo de consentimento para participar do Centro de Documentação e Registro Cirúrgico (CEDREC), com seguimento pós-operatório de 30 dias, 6 meses e 1 ano, sendo aplicado o questionário Quality of Life in Cardiovascular Surgery (QLCS)...(AU)