Prevalence of First Diagnosed Atrial Fibrillation in Patients Admitted with Acute Coronary Syndrome and with Impaired Renal Function with and without Diabetes Mellitus

Objective: To determine the prevalence of first diagnosed atrial fibrillation in patients admitted with acute coronary syndrome and with impaired renal function with and without diabetes mellitus.

Methodology: A total of 434 patients were selected from two different hospitals, 361 from NICVD, Tando Muhammad Khan and 73 from Isra University Hospital, Hyderabad. Both males and females, aged between 18 years to 70 years, first ever presented & admitted with acute coronary syndrome (ACS) and renal impairment were included and whereas, patients with atrial fibrillation (AF) other than first diagnosed, previous history of myocardial infarction/coronary artery bypass grafting (CABG), known case of chronic kidney disease/on dialysis, history of cerebrovascular accident (CVA), patient with valvular heart disease, and pregnant women were excluded from this study. Baseline and clinical data was collected to determine the association with the prevalence of first diagnosed AF through chi-square test and a p value of <0.05 was considered as statistically significant.

Results: The mean age ± SD was 49.32±12.47 years. Among them majority were males 66.35% and rural residents 51.15% respectively. The most common risk factor observed in our study was presence of hypertension (N = 231, 53.22%) and among all ACS patients, most common type of ACS was unstable angina (N = 195, 44.93%). The overall prevalence of first diagnosed atrial fibrillation was 12.44% (N = 54) and the overall prevalence of diabetes mellitus was 39.63% (N = 172). Mean random blood sugar levels in diabetic patients was 203.32±105.60 mg/dL, hypertensive patients with DM (48.14%), and patients with STEMI with DM (12.96%) were significantly associated with increased prevalence of first diagnosed atrial fibrillation, p value <0.05.

Conclusion: Prevalence of first diagnosed AF is comparatively higher in our study because of the underlying renal impairment. Modifiable risk factor like uncontrolled blood sugar levels has significance association with first diagnosed AF.