Evaluation of Right Ventricular Dysfunction after Successful Revascularization of Anterior Myocardial Infarction

Background: Myocardial infarction (MI) is defined as the irreversible necrosis of heart muscle resulting from a decrease in blood supply to the heart due to coronary artery occlusion. This study aimed to evaluate right ventricle (RV) function in patients diagnosed with anterior ST-elevation myocardial infarction (STEMI) without RV infraction after successful primary percutaneous coronary intervention (PCI). Methods: This quasi-interventional study included 48 patients diagnosed with anterior STEMI, they were divided into two groups: Group A (n=26): patients with RV dysfunction. Group B (n=22): patients without RV dysfunction. Results: The mean left ventricular end-systolic dimension (LVESD), left ventricular end-diastolic dimension (LVEDD) of group A was significantly higher than group B. The mean RVED mid cavity diameter, RVED basal diameter of group A while they were significantly different from group B. On the other side, the group B was found to significantly have higher EF% in relation with group A (p=0.014). Significantly, higher mean RVFAC in group B compared with group A (p<0.001). For RVMPI, it was significantly higher in in group A. However, tricuspid annular plane systolic excursion (TAPSE), and E/A ratio was significantly higher in group B (p<0.001), but right atrial area (RAA) showed significant higher mean in group A (p<0.001). Conclusion: Older age, higher diastolic blood pressure, increased LV dimensions, and decreased EF, HR, presence of extensive anterior infarction, LCX lesions were associated with abnormal RV dysfunction, older age, higher DBP & decrease HR were independently predictor factors of RV dysfunction by multivariant analysis.