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Year : 2017  |  Volume : 30  |  Issue : 1  |  Page : 32-36

Incidence of cardiac arrhythmia in children with dilated cardiomyopathy

Department of Pediatrics, Faculty of Medicine, Alexandria University, Alexandria, Egypt

Correspondence Address:
Manal A Antonios
Lecturer of Pediatrics, Department of Pediatrics, Faculty of Medicine, Alexandria University, Alexandria
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/AJOP.AJOP_7_17

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Background To date, no study has accurately characterized the frequency of arrhythmia in children with dilated cardiomyopathy (DCM). Recent studies have reported that children with DCM are at a higher risk for life-threatening arrhythmias than was previously appreciated. Aim This study attempted to assess the incidence of and to identify the risk for life-threatening arrhythmias in children with DCM. Patients and methods All patients with DCM who were attending the cardiology clinic in Alexandria University Children’s Hospital were enrolled in the study. All data about demographics, presenting symptoms at time of diagnosis and medications were collected. Clinical, echocardiographic and ECG parameters, and 24-h Holter records of the patients were evaluated. Results Six patients experienced arrhythmia, representing a rate of 20.7%, with more prevalence among female patients. Only one patient experienced life-threatening arrhythmia (supra-ventricular tachycardia, SVT), representing a rate of 3.4%. Significant risk factors of arrhythmias were disturbed electrolytes levels (P=0.008), abnormal diagnostic left ventricular dimensions (P=0.006) and longer QRS duration (P<0.001). Conclusion Wider-scale studies should be conducted to further evaluate the role of patient’s age, age at diagnosis of DCM and diagnostic echocardiographic variables on the incidence of arrhythmia. The high incidence of arrhythmia associated with prolonged QRS duration should undergo further investigation.

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