Coronary artery disease (CAD) is a significant health problem in Thailand and worldwide (World Health Organization, 2018). When the conditions cannot be controlled by optimal medication therapy, further treatment is based on coronary artery bypass graft (CABG) surgery (Neumann et al., 2019). The international guidelines recommend that the people with stable CAD who are likely to benefit from undergoing CABG for revascularization should have CABG performed within 6 weeks (Neumann et al., 2019). In Thailand, more than 5,000 CABG operations are carried out each year, and the demand for surgery continues to increase
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