Electrocardiographic Predictors of Mortality in Acute Inferior Wall St Elevation Mi Patients

Introduction- Outcome in Acute Inferior wall ST elevation MI (IWMI), as often expected,is not always good. Despite many studies on ECG parameters predicting poor outcome,direct head-to-head comparison of these parameters are lacking. This study was conducted to identify the prognostic signicance of various ECG parameters in predicting mortality as a vital part of non- invasive evaluation prior to taking the patient to cath-lab. The study was prospective, observational based with 204 admitted patients of acute IWMI r Methods- evascularized by either primary PCI or pharmaco-invasive strategy. Patients were assessed for ECG and other non-invasive parameters in relation to occurrence of death during hospital stay and at follow-up of one month. Mean age was 57.98 ± 9.022 years with 164(80.4%) males Results- and 40 (19.6%) females. Inhospital mortality occurred in 20 patients (9.8%);mortality during follow up was noted in 4 out of 184 surviving patients. Among the non ECG parameters, only female gender, Killip grade of > 2 and mean LV Ejection Fraction <50% were found to have signicant association with inhospital mortality. On ECG, ST elevation(avR), absolute sum of ST-depression(V1-V6) >0.8millivolt(s-STDV1-V6 >0.8 mV), lateral wall involvement and presence of ventricular tachycardia/brillation were associated signicantly with increased mortality during hospital stay while only s-STDV1-V6 >0.8 mV had association with death during follow-up. Logistic regression analysis revealed female gender and s-STDV1-V6 >0.8 mV as independent predictors of mortality during hospital stay. Acute IWMI patients with admis Conclusion- sion ECG nding of s-STDV1- V6 >0.8 mV represents increased mortality during hospital stay and at follow-up of one month.