This discussion was moderated by Robyn J. Barst, MD, Professor of Pediatrics, Divisions of Pediatric Cardiology at Columbia University College of Physicians and Surgeons and Cornell Medical Center, and Director of New York Presbyterian Pulmonary Hypertension Center at Columbia University Medical Center, New York, New York. Panel members included Jeffrey R. Fineman, MD, Pediatric Critical Care Specialist and Associate Investigator of the Cardiovascular Research Institute, University of California, San Francisco; John Granton, MD, Assistant Professor of Medicine, University of Toronto, Pulmonary Arterial Hypertension Programme, University Health Network, Toronto, Ontario; Michael A. Gatzoulis, MD, PhD, Professor of Cardiology, Congenital Heart Disease, and Consultant Cardiologist and Director of the Adult Congenital Heart Centre at the Royal Brompton Hospital and the National Heart and Lung Institute, Imperial College School of Medicine, London, UK; and Richard A. Krasuski, MD, Director of Adult Congenital Heart Disease Services, Department of Cardiovascular Medicine, Cleveland Clinic, Cleveland, Ohio.