Ryan Callahan, MD
Assistant Professor of Pediatrics (Cardiology) at the Children's Hospital of Philadelphia
Attending Physician, Division of Cardiology, Children's Hospital of Philadelphia
Director, Pulmonary Vein Stenosis Program, Children's Hospital of Philadelphia
Department: Pediatrics
Contact information
Children's Hospital of Philadelphia
3401 Civic Center Blvd
Philadelphia, PA 19104
3401 Civic Center Blvd
Philadelphia, PA 19104
Education:
BS (Biology; Minor in Psychology)
Pennsylvania State University, 2004.
MD
Drexel University College of Medicine, 2008.
Permanent linkBS (Biology; Minor in Psychology)
Pennsylvania State University, 2004.
MD
Drexel University College of Medicine, 2008.
Description of Clinical Expertise
Pulmonary Vein Stenosis, Congenital Interventional CardiologyDescription of Research Expertise
Pulmonary Vein Stenosis, Congenital Interventional CardiologySelected Publications
O’Byrne ML, Gupta M, Tang J, Smith CL, Dori Y, Rome JJ, Gillespie MJ, Callahan R: Technical success and adverse events associated with percutaneous carotid artery access for transcatheter procedures in infants. Catheter Cardiovasc Interv 2026.Asher M, O’Byrne ML, Callahan R, Mavroudis CD: Patients as a Limited Resource? Ethical Dilemmas in Pediatric Pulmonary Vein Stenosis. J Clin Ethics 2026.
Thatte N, Hammer PH, Marx G, Beroukhim R, Gauvreau K, Callahan R, Emani S, Hoganson D, del Nido P, Ghelani S: Biventricular Pressure-Volume Area Ratio: A Novel Predictor of Left Ventricular Preparedness for Double Switch Operation. JACC: Adv. 2026.
Naeem M, Rogers LS, O’Byrne ML, Giglia TM, Callahan R: Transcatheter Management of Native Aortic Root Thrombus Post-Fontan Palliation in a Pediatric Patient with COVID-19. J Am Coll Cardiol Case Rep 2026.
Faraji E, Maeda K, Gupta M, Tang J, Smith CL, O’Byrne ML, Dori Y, Rome JJ, Gillespie MJ, Callahan R: Transcatheter Brachial Arteriovenous Fistula Creation in Stage 2 Palliated Single Ventricle Patients with Cyanosis. J Soc Cardiovasc Angiogr Interv 2026.
Kamsheh AM, Canter MW, Huecker J, Allam H, Aggarwal M, Callahan R, Miller, JR, Mokshagundam D, Berger JH, Canter CE, Hahn LG, Scheel J, Ybarra AM, Zanaboni DB, Balzer DT, O’Byrne ML, Glatz AC: Pulmonary Vein Stenosis in Pediatric Heart Transplant: Prevalence, Risk Factors and Outcome. J Heart Lung Transplant 2026.
Callahan R, Gauvreau K, O’Byrne ML, Tang J, Keochakian M, Esch JJ, Porras D, Beroukhim R, Farias M, Harrild DM, Ireland CM, Kwatra N, Jenkins KJ: Predicting Outcome in Pediatric Pulmonary Vein Stenosis Using a Comprehensive Standardized Catheterization Assessment: Validation of the Invasive Pulmonary Vein Score (iPVS). J Soc Cardiovasc Angiogr Interv 2026.
Moore RL, Carter EL, Harris MA, Tedla BA, Callahan R, Partington SL, Maeda K, Brothers JA: Unrepaired Anomalous Aortic Origin of the Left Coronary Artery with Interarterial Course in Athletes. J Am Coll Cardiol Case Rep 2026.
Callahan R, Ahmed Humera, Goldberg DJ: Hypoplastic Left Heart Syndrome. Moss and Adams’ Heart Disease in Infants, Children and Adolescents From Fetal Through Adult Life. Daniel J Penny, Frank Cetta, Seema Mital, Carl L Backer, Jonathan N Johnson, Meryl S Cohen, and Carmen H Watrin (eds.). Wolters Kluwer, 11th Edition, 2026 Notes: Chapter.
Nathan M, Kiskaddon A, Emani S, Bigelow A, Callahan R, Cleveland J, Federman M, Ma M, McMullen M, Mir A, Branstetter J, VanderPluym C, Yerebakan C: The American Association for Thoracic Surgery (AATS) 2026 Consensus Statement on Antithrombotic Management of Neonates and Infants Undergoing Congenital Cardiac Interventions. J Thorac Cardiov Surg 2026.