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Bahram Kakavand, MD, FACC, FHRS, CEPS-PC Associate Professor of Pediatrics, University of Central Florida College of Medicine; Physician, Department of Cardiovascular Services, Division of Cardiology, Nemours Children’s Hospital

Bahram Kakavand, MD, FACC, FHRS, CEPS-PC is a member of the following medical societies: American College of Cardiology, Heart Rhythm Society, Iranian Society of Pediatric Cardiology, Pediatric and Congenital Electrophysiology Society

Disclosure: Nothing to disclose.

Mary L Windle, PharmD Adjunct Associate Professor, University of Nebraska Medical Center College of Pharmacy; Editor-in-Chief, Medscape Drug Reference

Disclosure: Nothing to disclose.

Alvin J Chin, MD Emeritus Professor of Pediatrics, University of Pennsylvania School of Medicine

Disclosure: Nothing to disclose.

Stuart Berger, MD Executive Director of The Heart Center, Interim Division Chief of Pediatric Cardiology, Lurie Childrens Hospital; Professor, Department of Pediatrics, Northwestern University, The Feinberg School of Medicine

Stuart Berger, MD is a member of the following medical societies: American Academy of Pediatrics, American College of Cardiology, American College of Chest Physicians, American Heart Association, Society for Cardiovascular Angiography and Interventions

Disclosure: Nothing to disclose.

Christopher Johnsrude, MD, MS Chief, Division of Pediatric Cardiology, University of Louisville School of Medicine; Director, Congenital Heart Center, Kosair Children's Hospital

Christopher Johnsrude, MD, MS is a member of the following medical societies: American Academy of Pediatrics, American College of Cardiology

Disclosure: Nothing to disclose.

The authors and editors of Medscape Drugs & Diseases gratefully acknowledge the contributions of previous author Christopher Mart, MD, to the development and writing of this article.

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