Interrelation between hypoxic liver injury and Killip classification in ST-segment elevation myocardial infarction patients

Hypoxic liver injury (HLI) and Killip classification are poor prognostic factors in patients with ST-segment elevation myocardial infarction (STEMI). This study investigates the interrelationship between hypoxic liver injury (HLI) and Killip classification. A total of 1,537 STEMI patients who underwent percutaneous coronary intervention (PCI) from 2007 to 2014 at four tertiary hospitals in the Incheon-Bucheon province were enrolled in this study. The patients were divided into four groups based on their Killip classification at presentation in the emergency room (ER). HLI was defined as a ≥2-fold increase in serum aspartate transaminase (AST). The incidence of HLI showed incremental tendency with respect to the Killip classification (19.5%, 19.4%, 34.6%, and 37.8%, respectively;