Early and Late Assessment of Left Ventricular Function Using Global Longitudinal Strain After Primary Percutaneous Coronary Intervention

This prospective cohort study was conducted on fifty patients presented with STEMI and underwent primary PCI to Assess the impact of primary percutaneous coronary intervention (Primary PCI) on the left ventricular (LV) systolic function in patients with Acute STEMI using speckle tracking Echocardiography within the first 24 hrs and within 1 month after performing PCI. All patients were evaluated by history taking, clinical examination, laboratory investigations and coronary angiography assessment with revascularization of the infarct-related artery (IRA). All patients had CCU admission for 3 days. Conventional 2D echocardiography was performed within 24 h of Primary PCI to assess LV Global longitudinal peak systolic strain (GLPSS). All patients had been discharged to home with the guidelines-based medical treatment including (DAPT, Atorvastatin, ACEIs, Beta blockers). GLPSS was re-assessed after 1 month. The patients were divided into two groups: improved and non-improved, according to the improvement of LV systolic function measured by GLPSS. Improvement is defined by increase of GLPSS ≥ 10%. Our study demonstrated Improvement of LV function was based on GLPSS and was observed in 54% of the patients. Peak cardiac troponin T level, Peak creatine phosphokinase levels (CPK), LV diastolic function, and baseline GLPSS were identified as independent predictors of recovery of LV function. The patients who showed improvement of GLPSS were associated with improvement of EF (using simpson method).