Prognostic value of short-term trajectories of left ventricular ejection fraction in patients with first myocardial infarction and percutaneous coronary intervention

Aim. To assess periprocedural dynamics of left ventricular ejection fraction (LVEF) in patients with first acute myocardial infarction (AMI) and percutaneous coronary intervention (PCI) without heart failure (HF) in the medical history, as well as its prognostic value in the development of cardiovascular complications in the postinfarction period. Materials and methods. A prospective, single-center observational study included 131 patients with first AMI without HF in the past medical history and successful PCI. LVEF was assessed before PCI at admission and before discharge. In patients with reduced baseline LVEF of less than 50%, the criteria for its periprocedural improvement were chosen: 1) LVEF & GE; 50%; 2) increment LVEF of more than 5%, but EF < 50%. The endpoints were hospitalization for the development of HF and death from cardiovascular disease in combination with the development of HF. The average follow-up period was 2.5 years. Results. At admission, LVEF was < 50% in 74 (56.5%) patients. At discharge, according to the criteria for LVEF improvement, the proportion of patients in this group was 40.5 and 14.9%, respectively. In 44.6% of cases, no increase in LVEF was noted. The predictors of the absence of periprocedural dynamics in LFEF included impaired regional contractility index > 1.94, left ventricular end-systolic volume > 57 ml, left ventricular end-diastolic diameter > 5.1 cm, pulmonary artery systolic pressure >27 mm Hg, NT-proBNP > 530 pg / ml, and E / A ratio > 1.06. During the follow-up period, 28 (21.4%) patients were hospitalized for the development of HF, 33 (25.2%) patients had a combined endpoint. The absence of periprocedural improvement in left ventricular contractility was independently associated with higher odds of hospitalization for HF (relative risk (RR) 3.5; 95% confidence interval (CI) 1.63-7.55; p = 0.001) and the combined endpoint (RR 2.6; 95% CI 1.28-5.48; p = 0.009) in the postinfarction period. Conclusion. In patients with first AMI and left ventricular systolic dysfunction, periprocedural evaluation of LVEF is reasonable to stratify the risk of adverse cardiovascular outcomes.