Ventricular Arrhythmia in the X-linked Cardiomyopathy Barth Syndrome |
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Authors: | C.T. Spencer B.J. Byrne M.H. Gewitz S.B. Wechsler A.C. Kao E.P. Gerstenfeld A.D. Merliss M.P. Carboni R.M. Bryant |
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Affiliation: | (1) Department of Pediatrics, Division of Cardiology, University of Florida, 1600 SW Archer Rd HD 303, Gainesville, FL 32610, USA;(2) Department of Pediatrics, Division of Cardiology, New York Medical College, Valhalla, NY 10532, USA;(3) Department of Pediatrics, Division of Cardiology, University of Michigan, Ann Arbor, MI 48109, USA;(4) Cardiovascular Division, University of Pennsylvania, Philadelphia, PA 19104, USA;(5) Bryan LGH Heart Institute, Lincoln, NE 68516, USA;(6) Department of Pediatrics, Division of Cardiology, Duke University Medical Center, DUMC 3090, Durham, NC 27710, USA |
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Abstract: | Barth syndrome is an X-linked disorder characterized by dilated cardiomyopathy, cyclic neutropenia, skeletal myopathy, abnormal mitochondria, and growth deficiency. The primary defect is a mutation in the TAZ gene on the X chromosome at Xq28, resulting in abnormal phospholipid biosynthesis and cardiolipin deficiency. To date, there has been no systematic evaluation of the cardiac phenotype. We report five cases of cardiac arrest and/or placement of an internal cardiac defibrillator with documented ventricular arrhythmia. We suggest that ventricular arrhythmia is part of the primary phenotype of the disorder and that patients should be screened accordingly. |
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Keywords: | Cardiomyopathy Arrhythmia Barth syndrome |
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