Comparison of Short Term In-Hospital Outcomes in patients presenting with ST-Elevation Myocardial Infarction Versus Non-ST-Elevation Myocardial Infarction

Abstract

Objective: To compare the short term in-hospital outcomes in patients presenting with acute ST-Elevation Myocardial Infarction (STEMI) and Non-ST-Elevation Myocardial Infarction (NSTEMI). Study Design: Comparative Cross-sectional study. Place and Duration of Study: Adult cardiology department of tertiary care center, Rawalpindi Pakistan, from Aug 2022 to Feb 2023. Methodology: A sample of 323 patients of acute STEMI and NSTEMI were enrolled. Patients fulfilling the inclusion criteria were enrolled through non-probability consecutive sampling. Patients were divided into two groups. The data of short term in hospital outcomes was recorded. Data was entered and analyzed using SPSS version-26:00. Chi-square and t-test were used to find association and mean difference of study variables between study groups. Results: Out of total 317 patients, males were 262(82.6%) and females were 55(17.4%)) with an average age of 63.34±8.96 years in the study. 139(43.8%) patients had Diabetes Mellitus, 146(46.1%) were hypertensive and 73(23.0%) were smokers. 198(62.5%) patients had STEMI and 119(37.5%) had NSTEMI. Mortality within hospital was found in 10(3.2%) patients. There were significant findings with age (p<0.001), gender (p<0.001), diabetes (p=0.01), pulmonary edema (p=0.01) and severe Left Ventricular Dysfunction (LVD) (p<0.001). Higher in-hospital mortality rate was noted in NSTEMI group, i.e. 5(4.2%) compared to STEMI 5(2.5%), but the findings were statistically insignificant (p=0.40). Conclusion: There was no meaningful distinction between the two groups' immediate outcomes. Although patients with NSTEMI had relatively higher complication rates and in-hospital mortality, and patients with STEMI had better short-term outcomes, suggesting that patients with NSTEMI may also require immediate medical attention.