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Arrhythmias in children with ventricular assist devices

  • W. Buck Kyle (a1), Jamie Decker (a1) (a2), Scott L. Macicek (a1) (a3), Santiago O. Valdes (a1), David Morales (a1) (a4), Borah Hong (a1), Jack F. Price (a1), William J. Dreyer (a1), Susan W. Denfield (a1) and Jeffrey J. Kim (a1)...

Abstract

Background: Children with decompensated heart failure are at high risk for arrhythmias, and ventricular assist device placement is becoming a more common treatment strategy. The impact of ventricular assist devices on arrhythmias and how arrhythmias affect the clinical course of this population are not well described. Methods and results: A single-centre retrospective analysis of children receiving a ventricular assist device between 1998 and 2011 was performed. In all, 45 patients received 56 ventricular assist devices. The median age at initial placement was 13 years (interquartile range 6–15). The median duration of support was 10 days (range 2–260). The aetiology of heart failure included cardiomyopathy, transplant rejection, myocarditis, and congenital heart disease. In all, 32 patients (71%) had an arrhythmia; 19 patients (42%) had an arrhythmia before ventricular assist device and eight patients (18%) developed new arrhythmias on ventricular assist device. Ventricular tachycardia was most common (25/32, 78%). There was no correlation between arrhythmia and risk of death or transplantation (p=0.14). Of the 15 patients who weaned from ventricular assist device, post-ventricular assist device arrhythmias occurred in nine (60%), with five (33%) having their first arrhythmia after weaning. Patients with ventricular dysfunction after ventricular assist device were more likely to have arrhythmias (p<0.02). Conclusions: Arrhythmias, especially ventricular, are common in children requiring ventricular assist device. They frequently persist for those able to wean from ventricular assist device.

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Corresponding author

Correspondence to: Dr J. J. Kim, MD, Department of Pediatrics, Division of Pediatric Cardiology, Texas Children’s Hospital, Baylor College of Medicine, 6621 Fannin, MC# 19345-C, Houston, TX 77030, United States of America. Tel: 832 826 5600; 713 422 3641; Fax: 832 826 1901; E-mail: jjkim@texaschildrenshospital.org

References

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