Objective: To study QT parameters in Thalassaemia Major patients and their association with serum ferritin levels.
Methods: This cross-sectional study was conducted at Ziauddin University, Karachi, from February 2013 to September 2014, and comprised patients of Thalassaemia Major. Participants' serum ferritin levels were determined and electrocardiography was performed. Data was analysed using SPSS 20.
Results: Of the 135 participants, 68(50.4%) were in the 7-14 years age group and 69(51%) were males. Significant prolongation of QT, corrected QT interval and increased QT dispersion was observed in patients with serum ferritin levels more than 2,500 nanogram/millilitre (p<0.001 each). These measurements of corrected QT and QT dispersion had a positive linear correlation with serum ferritin levels (r=0.760 and 0.786).
Conclusions: Electrocardiography could be a useful means for the pre-clinical detection of cardiac involvement due to iron overload in Thalassaemia Major patients.
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