Impact Of Body Mass Index On In-Hospital Mortality In Patients Presenting With Acute ST Elevation Myocardial Infarction

Abstract

Introduction: Obesity raises the risk of cardiovascular disease, the clinical result of acute cardiovascular events may be better in people with a high body mass index (BMI). Aims and Objective: The objective of the study was to compare the frequency of in-hospital mortality in underweight, normal, overweight and obese patients presenting with acute ST elevation myocardial infarction. Material and methods: From September 2017 to February 2018, a descriptive case series was held at the Cardiology Ward of the Punjab Institute of Cardiology in Lahore. A total of 350 patients who met the eligibility requirements were enrolled. Then height and weight were noted and BMI was calculated. The patients were followed-up for 5 days after STEMI. If patient died within hospital stay, then in-hospital mortality was labeled. Results: The mean age of patients was 57.94±13.62 years. There were 177 (50.6%) males and 173 (49.4%) females.  160 (45.7%) patients were diabetic while 190 (54.3%) were non-diabetic. The mean BMI of patients was 25.36±5.66 kg/m2. In-hospital mortality occurred in 11 (22.4%) underweight patients, in 8 (7.1%) patients who had normal BMI, in 11 (10.9%) who were overweight while in 9 (10.2%) who were obese. The significant difference was observed and underweight patients had high in-hospital motility (p<0.05). Conclusion: The frequency of in-hospital mortality was high in underweight patients as compared to normal, overweight or obese patients. Key words: Body mass index, ST elevation myocardial infarction, in-hospital mortality, underweight, normal, overweight, obese