Electrocardiographic and biochemical predictors of left ventricular remodeling early after ST-segment elevation myocardial infarction

<b>Aim:</b> We aimed to assess low to mid-range left ventricular ejection fraction (LVEF) predictors at one-month follow-up in STEMI patients using baseline electrocardiography (ECG) and standard laboratory tests.<b>Methods:</b> In this retrospective cross-sectional study, 130 STEMI patients (79% male, mean age: 57.2 ± 11.9 years) were enrolled. Multivariate linear regression analysis determined the relationship of baseline 12-lead ECG and clinical/laboratory parameters with LVEF at the 1st-month follow-up visit.<b>Results:</b> The mean LVEF of the patients at the 1st-month follow-up visit was 51.8 ± 8.7%. There was a significant negative correlation between age (r = -0.206)*, peak CK-MB level (-0.0411)**, QTc interval (r = -0.209)*, STE amount (mV) (r = -0.286)**, V_5-6 RWPT (r = -0.238)** and aVR RWPT (r = -0.466)** with LVEF (*<i>p</i> < 0.05; **<i>p</i> < 0.01). The aVR R wave peak time (RWPT) (OR: 0.88, <i>p</i> < 0.01) and peak CK-MB level (OR: 0.91, <i>p</i> < 0.01) were the two most important predictors of low-to-mid-range LVEF (<%50) during mean 38 ± 5 days follow-up after STEMI.<b>Conclusion:</b> Our study results suggested that the baseline aVR RWPT and peak CK-MB level were associated with low-to-mid-range LVEF at the 1st-month follow-up after STEMI. These parameters may be used in the risk stratification of STEMI patients to develop LV remodeling during follow-up.