MPO and diabetes mellitus: As shown in Table 2, in a multivariable logistic regression model that was adjusted for age, sex, BMI, hypertension, diabetes mellitus, LAD, LVEF, EuroSCORE II, number of grafts, and pericardial fluid MPO levels, the pericardial MPO levels were associated with a higher risk of POAF (odds ratio = 1.016; 95% CI, 1.001–1.031; p = 0.031).