GPT and congestive heart failure: Regarding comorbidities, the prevalence of AMI increased significantly with higher AST/ALT ratios (28.7% vs. 18.4%, P < 0.001), while CHF (15.3% vs. 22.8%, P < 0.001) and DM (24.2% vs. 35.6%, P < 0.001) showed inverse associations.