FACTORS ASSOCIATED WITH QUALITY OF LIFE AMONG POST CORONARY ARTERY BYPASS GRAFTING PATIENTS AT A CARDIOTHORACIC CENTRE IN MALAYSIA
Background: Coronary artery bypass grafting (CABG) is the best treatment option for coronary heart disease. It improves survival and quality of life (QOL) for patients with multivessel coronary artery disease and those with more advanced coronary artery disease, left ventricular dysfunction, or diabetes. The purpose of this study is to measure the QOL among patients after CABG surgery and its associated factors.
Materials and Methods: A cross-sectional study was conducted in a cardiothoracic centre in Malaysia involving 184 respondents. A pretested, self-administered questionnaire which included the validated SF-36 Health Survey was filled by respondents who met the inclusion and exclusion criteria. Non parametric test was used to identify factors associated with QOL among the respondents. Significance level was set at 0.05.
Result: The total number of respondents was 184 with response rate of 100%. From the analysis, the mean(SD) score of the eight domains of SF-36 ranges between 58.8(25.4) and 82.7(23.5), where the lowest score was physical functioning domain while the highest score was bodily pain and social functioning domain. The mean(SD) age of respondents was 59.86(8.17). Majority of respondents were male (82.6%), Malay (43.5%), Muslims (45.1%), married (85.9%), received minimal primary education (96.7%) and retired/unemployed (48.9%). Age, gender, religion, educational level and employment status, showed to have significant association with at least one domain of QOL including physical component score (PCS) and mental component score (MCS) with statistical significant set at P<0.05.
Conclusion: Quality of life scores showed to be higher compared to coronary artery disease patients. Several sociodemographic characteristics (employed, married, high education level) were associated with good quality of life domains among the respondents.
Keywords: Quality of life, QOL, Coronary artery bypass grafting, CABG, SF-36 health survey, Malaysia