Infection in patients with ST-elevation myocardial infarction (STEMI) undergoing percutaneous coronary intervention (PCI) significantly increases mortality, prolongs the length of hospital stay, and increases the health care cost [1,2]. Therefore, it is critical to identify patients at high risk of post-acute myocardial infarction (P-AMI) infection and to develop effective interventions for prevention. Some tools have been established for risk stratification, such as the quick Sequential Organ Failure Assessment (qSOFA).