Objective: To compare the mean magnesium level among diabetic and non-diabetic patients presenting with myocardial infarction in a tertiary care hospital.

Study Design: Descriptive study

Place and Duration: Conducted at Emergency department, Punjab Institute of Cardiology, Lahore during the period from 5^th June 2018 to 4^th December 2018.

Methodology: The non-probability purposive sampling technique was used in this study. Informed consent was obtained from all patients and study protocol was explained. Under aseptic conditions, venous blood samples were obtained from cases at the time of presentation in emergency department. Samples were sent to laboratory of hospital to assess magnesium level. Serum magnesium level was measured by using standard chemical analyzer. Reports were read to note serum magnesium level (as per operational definition). Data was collected by the researcher himself. Both groups were compared using independent sample t test to compare mean serum magnesium level in both groups. A p value <0.05 was taken as significant.

Results: The mean age of the patients was noted as 45.56±8.78 years, 70% patients were males whereas 30% patients were females. In this study the DM was observed in 60% patients whereas it was not observed in 40% patients.The mean value of serum magnesium level of the patients was 1.60±0.53 mg/dl. Mean serum magnesium value in diabetic group was 1.36±0.56 mg/dl whereas the mean serum magnesium value in non-diabetic group was 1.96±0.21 mg/dl. Statistically there is highly significant difference was found between the values of serum magnesium values and study groups i.e. p-value=0.000.

Conclusion: Thus according to the findings of this study we have come to know that the incidence of DM is high in MI patients. Moreover, low magnesium levels have been observed in diabetic patients.

Keywords: Serum Magnesium level, Myocardial Infarction, MI, Diabetes Mellitus, DM, HBA1C