Eosinophils (EOS) in peripheral blood are significantly decreased in ST-segment elevation myocardial infarction (STEMI) and the reduced EOS indicates severe myocardial damage. Whether EOS is a good predictor for in-hospital major adverse cardiac events (MACEs) of patients with ST-segment elevation myocardial infarction remains unknown. The aims of this study was to evaluate prognostic role of EOS for in-hospital MACEs in STEMI patients who have undergone primary percutaneous coronary intervention (PCI)

The investigators retrospectively analyzed the clinical data of 518 patients with STEMI after PCI. MACEs were defined as cardiac arrest, cardiac rapture, malignant arrhythmia and cardiac death. The receiver operating characteristic (ROC) curves were used to demonstrate the prognostic value of EOS% in in-hospital MACEs. All patients were divided into 2 groups according to the best cut-off EOS% value, including reduced EOS% group and control group. Cox regression analyses and KM survival curve were used to calculate the correlated between EOS with in-hospital MACEs.

Inclusion Criteria:

1. Patients with STEMI who underwent PCI within 12 hours from symptom onset
2. Patients from whom informed consent has been properly obtained in writing prior to start of the trial.

Exclusion Criteria:

1. Patients with previous myocardial infarction, congenital heart disease
2. Patients with liver disease, and renal failure
3. Patients with immunologic disease, malignant tumors, pregnancy, infection caused by various pathogens, chronic inflammatory disease, trauma.

STEMI Patients