Prevalence and Risk Factors of Prolonged QTc Interval among Egyptian Type 2 Diabetes Patients

The aim of this study was to evaluate the prevalence and the risk factors of prolonged QTc interval among Egyptian patients with type 2 diabetes. Patients and methods: We enrolled in this cross-sectional study from June 2011 to December 2015, a total of 220 patients (108 male & 112 female) with mean age 50.42 7.453years diagnosed with type 2 DM. Results: In this study, we found (33.6%) 74 T2 DM patients with QTc>440 ms had statistically significant longer diabetes duration and, diastolic BP, Total cholesterol. LDL-C and UACR with 146 type 2 DM patients with 440QTc ms (P value 0.05). Also statistically significant higher incidence of insulin therapy, retinopathy and nephropathy has been founded in 74 T2 DM patients with QTc>440 Ms. By Pearson correlation, we found QTc interval significantly correlated with diabetes duration, Diastolic BP, TC , LDL-C and UACR., also by using multiple regression analysis we found LDL-c, diabetic duration and UACR were statistically significant predictors of QTc interval. In logistic regression analysis for identification of risk factors for QTC interval prolongation, only LDL-c and UACR were statistically significant (P value<0.05) predictors of QTc interval. Conclusion: Prolonged QTc prevalence among type 2 diabetic Egyptian patients was 33.6%. Although QTc prolongation was associated with longer diabetes duration, diastolic BP, total cholesterol, LDL-C, albumin urinary excretion, insulin therapy and retinopathy, only statistically significant predictors of QTc interval main risk factor for QTc prolongation were LDL-c and UACR.