GPT and coronary artery disorder: Multivariable logistic regression analysis identified ischemic heart disease (adjusted OR 2.31, 95% CI 1.13–4.71, p = 0.02), BUN before extubation (adjusted OR 1.01, 95% CI 1–1.02, p = 0.04), and ALT (adjusted OR 0.96, 95% CI 0.93–0.99, for each IU/L increase, p = 0.03) as the only independent predictors of the need for re-intubation.