Association between the weekday on which coronary artery bypass graft surgery is performed and the 30-day mortality: A nationwide cohort study in South Korea.

This South Korean population-based cohort study revealed that relative to surgery early in the week (Monday-Tuesday), CABG surgery later in the week (Wednesday-Friday) was not associated with higher 30-day mortality. However, using surgery on Monday as a reference, CABG surgery on Friday was associated with higher 30-day mortality. Future studies must confirm these findings.