Prognostic Value of The Age, Creatinine, and Ejection Fraction Score for Non-infarct-related Chronic Total Occlusion Revascularization After Primary Percutaneous Intervention in Acute ST-elevation Myocardial Infarction Patients: A Retrospective Study

Among the 2952 patients with STEMI successful treatment by PCI, 395 patients (13.4%) had a non-IRA CTO lesion. 18 patients were excluded from current study as they death within 7 days (n=6) or were not to follow-up (n=7). Due to unavailability of ejection fraction or renal function before CTO-PCI, ACEF score could not be calculated in 5 patients. The remaining 377 patients (95.4%) were finally analyzed in the study. 279 patients performed a staged CTO-PCI attempt(ranging 7-28 days) and was successful in 221 of them. Due to low possibility of PCI success or patients refused to perform PCI, 98 patients did not undergo the PCI attempt. The patients were then divided into successful CTO-PCI group (221 patients) and failed/ non-attempted CTO-PCI group (156 patients). \-