1 INTRODUCTION

Cardiac rehabilitation program (CRP) is a comprehensive intervention that integrates individualized and monitored exercise with teaching information, both of which are important for patients after CABG and act in two steps: First, cardiac rehabilitation promotes quicker and healthier recovery from cardiac surgery in the first duration following the surgery, which is mostly significant for CABG patient, as an aging person with several diseases and limitations. Second, it provides better routines, and the necessary information to manage coronary artery diseases (CAD) in order to be successful in the long run.1Kabboul et al2 indicated that the core components of cardiac rehabilitation are, first, exercise to improve cardiovascular wellness without exceeding safe points; second, instruction about coronary illness alongside direction on approaches to balance out or turn around coronary illness by improving danger factors, for example, decreasing/quitting smoking, lipid and hypertension (HTN) control, weight reduction/control, improved management of diabetes, and increased physical movement; and third, diet counselling and improved mental health. Assessing the health -related quality of life (HRQOL) of cardiovascular patients is essential to know the impact of cardiovascular and rehabilitation interventions in terms of physical, mental, and social aspects, which can be beneficial as an indicator of the efficiency of therapeutic and diagnostic.3 Nawito et al4 referred to the HRQOL as an overall assessment of total well-being that includes physical and social well-being. All aspects of life, including work, home, relationships, finance, and health, affect it.
There are limited systematic reviews of randomized control trials (RCT) and quasi-experimental studies that assess the effectiveness of CRPs for CABG patients. Hence, it is important to conduct such type of studies because it provides a comprehensive understanding of the importance of a CRP and how it improves the HRQOL and physiological outcomes of cardiac patients. Hence, the purpose of this study was to investigate the literature that search the effect of CRPs on HRQoL of CABG patients, and physiological outcomes.