Education and Training

Medical School

MD - Drexel University College of Medicine, Philadelphia, PA


Pediatrics - Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, PA


Pediatric Cardiology - Children’s Hospital of Pittsburgh of UPMC, Pittsburgh, PA (Chief Fellow)
Interventional Pediatric Cardiology - Boston Children’s Hospital, Boston, MA (Senior Fellow)

Board Certification

Pediatric Cardiology – American Board of Pediatrics
Pediatrics – American Board of Pediatrics

Titles and Academic Titles

Attending Cardiologist

Assistant Professor of Pediatrics, Perelman School of Medicine at the University of Pennsylvania

Departments and Services




Feins EN, Ireland C, Gauvreau K, Chavez M, Callahan R, Jenkins KJ, Baird CW. Pulmonary Vein Stenosis: Anatomic Considerations, Surgical Management, and Outcomes. J Thorac Cardiovasc Surg. 2022 Jun;163(6):2198-2207.e3.

Stein ML, Staffa SJ, O’Brien CA, Callahan R, DiNardo JA, Nasr VG, Brown ML. Anesthesia in Children with Pulmonary Hypertension: Clinically Significant Serious Adverse Events Associated with Cardiac Catheterization and Noncardiac Procedures. J Cardiothorac Vasc Anesth. 2022 Jun;36(6):1606-1616.

Winant AJ, Vargas SO, Jenkins KJ, Callahan R, Rameh V, Krone KA, Johnston PR, Keochakian M, Lee EY. Pleuropulmonary MDCT Findings: Comparison between Children with Pulmonary Vein Stenosis and Prematurity-Related Lung Disease. Children. 2022 Mar 4;9(3):355.

Winant AJ, Callahan R, Vargas SO, Jenkins KJ, Rameh V, Johnston PR, Niccum M, Keochakian M, Lee EY. Lung and Pleural Findings of Children with Pulmonary Vein Stenosis With and Without Aspiration: MDCT Evaluation. Children. 2022 Apr 12;9(4):543.

Wheeler CR, Vogel ER, Cusano MA, Friedman KG, Callahan R, Porras D, Ibla JC, Levy PT. Definitive Closure of the Patent Ductus Arteriosus in Preterm Infants and Subsequent Short-Term Respiratory Outcomes. Respir Care. 2022 May;67(5):594-606.

Callahan R, Morray BH, Hirsch R, Petit CJ. Management of Pediatric Pulmonary Vein Stenosis. JSCAI. Available online 30 June 2022.

Asrani P, Gellis LA, Pickard SS, Schidlow D, Callahan R, Porras D, Wilkins-Haug L, Guseh S, Tworetzky W, Friedman KG. Hemodynamic and Anatomic Changes after Fetal Aortic Valvuloplasty are associated with Procedural Success and Postnatal Biventricular Circulation. Prenat Diagn. 2022 Sep;42(10):1312-1322.

Asrani P, Gellis LA, Pickard SS, Schidlow D, Callahan R, Porras D, Wilkins-Haug L, Guseh S, Tworetzky W, Friedman KG. Technically Successful Fetal Aortic Valvuloplasty Acutely Improves Left Heart Output. Prenat Diagn. 2022 Oct;42(11):1466-1470.

Yeh MJ, Gauvreau K, Armstrong AK, Batlivala SP, Callahan R, Gudausky TM, Hainstock MR, Hasan B, Nicholson GT, O’Bryne ML, Shahanavaz S, Trucco S, Zampi JD, Bergersen L. Early Postoperative Congenital Cardiac Catheterization Outcomes: A Multicenter Study. Ann Thorac Surg. 2022 Dec 5;S0003-4975(22)01528-4. Online ahead of print.


Callahan R, Jenkins KJ, Gauthier Z, Gauvreau K, Porras D.  Preliminary Findings on the Use of Intravascular Ultrasound in the Assessment of Pediatric Pulmonary Vein Stenosis.  Catheter Cardiovasc Interv. 2021 Feb 15;97(3):E362-E370.

Feins EN, Chavez M, Callahan R, del Nido PF, Emani SM, Baird CW. Experience and Outcomes of Surgically Implanted Melody Valve in the Pulmonary Position. Ann Thorac Surg. 2021 Mar;111(3):966-972.

Choi C, Gauvreau K, Levy P, Callahan R, Jenkins KJ, Minghui C. Longer Exposure to Left-to-Right Shunts is a Risk Factor for Pulmonary Vein Stenosis in Patients with Trisomy 21. Children. 2021 Jan 1;8(1):19.

Beattie MJ, Friedman KG, Sleeper L, Lu M, Drogosz M, Callahan R, Marshall AC, Prosnitz AR, Lafranchi T, Benson CB, Wilkins-Haug LE, Tworetzky W. Late Gestation Predictors of a Postnatal Biventricular Circulation after Fetal Aortic Valvuloplasty. Prenat Diagn. 2021 Mar;41(4):479-485.

Callahan R, Gauthier Z, Toba S, Sanders SP, Porras D, Vargas SO. Correlation of Intravascular Ultrasound with Histology in Pediatric Pulmonary Vein Stenosis. Children. 2021; 8(3):193.

Lee EY, Jenkins KJ, Vargas SO, Callahan R, Park HJ, Gauthier Z, Winant AJ. Thoracic Multidetector Computed Tomography Angiography of Primary Pulmonary Vein Stenosis in Children: Evaluation of Characteristic Extravascular Findings. J Thorac Imaging. 2021 May 12. Online ahead of print.

Frank DB, Levy PT, Stiver CA, Boe BA, Baird CW, Callahan RM, Smith CV, Vanderlaan RD, Backes CH.  Primary Pulmonary Vein Stenosis During Infancy:  State of the Art Review. J Perinatol. 2021 Mar 5. Online ahead of print.

Callahan R, Gauvreau K, Marshall AC, Sena LM, Baird CW, Ireland CM, McEnaney K, Bjornlund EC, Mendonca JT, Jenkins KJ. Outcomes in Establishing Individual Vessel Patency for Pediatric Pulmonary Vein Stenosis.  Children. 2021; 8(3):210.

Sena L, Callahan R, Sleeper LA, Beroukhim RS.  Prognostic Significance of Computed Tomography Findings in Pulmonary Vein Stenosis. Children. 2021; 8, 402.

Feins EN, Callahan R, Baird CW, Pulmonary Veins Stenosis – Evolving Surgical Management of a Challenging Disease. Children. 2021; 8, 631.

Lee EY, Callahan R, Vargas SO, Jenkins KJ, Park HJ, Gauthier Z, Winant AJ. Extravascular MDCT Findings of Pulmonary Vein Stenosis in Children with Cardiac Septal Defect. Children. 2021; 8, 667.

Wheeler C, Gagner D, Stephens H, Kraus A, Zurakowski D, Friedman K, Ibla J, Callahan R, Levy P. Phenotyping Respiratory Decompensation Following Definitive Closure of the Patent Ductus Arteriosus in Preterm Infants. J Perinatol. 2021 Oct 14. Online ahead of print.

Lee EY, Vargas SO, Jenkins KJ, Callahan R, Park HJ, Gauthier Z, Winant AJ. Secondary Pulmonary Vein Stenosis Due to Total Anomalous Pulmonary Venous Connection Repair in Children: Extravascular MDCT Findings. Children. 2021; 8, 726.

Hammer, PE, McEnaney K, Callahan R, Baird CW, Hoganson DM. The Role of Elevated Wall Shear Stress in Progression of Pulmonary Vein Stenosis: Evidence from Two Case Studies. Children. 2021; 8, 729.

Niccum M, Callahan R, Gauvreau K, Jenkins KJ. Aspiration is Associated with Poor Treatment Response in Pediatric Pulmonary Vein Stenosis. Children. 2021; 8, 783.

Feins EN, Ireland C, Gauvreau K, Chavez M, Callahan R, Jenkins KJ, Baird CW. Pulmonary Vein Stenosis: Anatomic Considerations, Surgical Management, and Outcomes. J Thorac Cardiovasc Surg. 2021 Oct 23. Online ahead of print.


Callahan R, Esch JJ, Wang G, Ireland CM, Gauvreau K, Jenkins KJ. Systemic Sirolimus to Prevent In-Stent Stenosis in Pediatric Pulmonary Vein Stenosis. Pediatr Cardiol. 2020 Feb;41(2):282-289.

Goldsmith MP, Allen CK, Callahan R, Kaza AK, Mah DY, Gauvreau K, Salvin JW, Porras D.  Acute Coronary Obstruction Following Surgical Repair of Congenital Heart Disease.  J Thorac Cardiovasc Surg. 2020 May;159(5):1957-1965.e1.

Pickard SS, Wong JB, Bucholz EM, Newburger JW, Tworetzky W, Lafranchi T, Benson CB, Wilkins-Haug LE, Porras D, Callahan R, Friedman KG. Fetal Aortic Valvuloplasty for Evolving Hypoplastic Left Heart Syndrome: A Decision Analysis. Circ Cardiovasc Qual Outcomes. 2020 Apr;13(4): e006127.

Zettler E, Rivera BK, Stiver C, Boe B, Cua C, Ball MK, Smith CV, Slaughter JL, Chen B, Callahan R, Backes CH. Primary Pulmonary Vein Stenosis Among Premature Infants with Single-Vessel Disease.  J Perinatol. 2020 Sep 25. Online ahead of print.

Maschietto N, Sperotto F, Esch JE, Porras D, Callahan R. The Snared Wire Technique: A Novel Technique to Facilitate the Delivery of the Sapien Valve in the Pulmonary Position. Catheter Cardiovasc Interv. 2020 Oct1;96(4):898-903.

Geggel RL, Gauvreau K, Callahan R, Feins EN, Baird CW. Scimitar Syndrome: A New Multi-patch Technique and Incidence of Postoperative Pulmonary Vein Obstruction.  JTCVS Tech.  2020 Dec1(4):P208-216.


Nasr VG, Callahan R, Wichner Z, Odegard KC, DiNardo JA.  Intraluminal Pulmonary Vein Stenosis in Children:  A “New” Lesion. Anesth Analg. 2019 Jul;129(1):27-40.

Quinn BP, Armstrong AK, Bauser-Heaton HD, Callahan R, El-Said HG, Foerster SR, Goldstein BH, Goodman AS, Gudausky TM, Kreutzer JN, Leahy RA, Petit CJ, Rockefeller TA, Shahanavaz S, Trucco SM, Bergersen L, & Congenital Cardiac, C. 2019. Radiation Risk Categories in Cardiac Catheterization for Congenital Heart Disease: A Tool to Aid in the Evaluation of Radiation Outcomes. Pediatr Cardiol. 2019  Feb;40(2):445-453

Zampi JD, Alghanem F, Yu S, Callahan R, Curzon CL, Delaney JW, Gray RG, Herbert CE, Leahy RA, Lowery R, Pasquali SK, Patel PM, Porras D, Shahanavaz S, Thiagarajan RR, Trucco SM, Turner ME, Veeram Reddy SR, West SC, Whiteside W, Goldstein BH. Relationship Between Time to Left Atrial Decompression and Outcomes in Patients Receiving Venoarterial Extracorporeal Membrane Oxygenation Support: A Multicenter Pediatric Interventional Cardiology Early-Career Society Study. Pediatr Crit Care Med. 2019 Aug;20(8):728-736.


Callahan R, Kieran MW, Baird CW, Colan SD, Gauvreau K, Ireland CM, Marshall AC, Sena LM, Vargas SO, Jenkins KJ.  Adjunct Targeted Biologic Inhibition Agents to Treat Aggressive Multi-Vessel Intraluminal Pediatric Pulmonary Vein Stenosis. J Pediatr. 2018 Jul;198:29-35.e5.

Callahan R, Lock JE, Shah PB, Marshall AC.  Transcatheter Intervention of Coronary Obstructions in Infants, Children and Young Adults. Pediatr Cardiol. 2018 Oct;39(7):1299-1307.

Hoganson DM, Cigarroa CL, van den Bosch SJ, Sleeper LA, Callahan R, Friedman KG, Baird CW, Quinonez LG, Kaza AK, Emani SE, Kheir JN.  Impact of a Composite Valved RV-PA Graft Following the Stage 1 Palliation. Ann Thorac Surg. 2018 Nov;106(5):1452-1459.


Callahan R, Bergersen L, Baird CW, Porras D, Esch JJ, Lock JE, Marshall AC.  Mechanism of Valve Failure and Efficacy of Reintervention through Catheterization in Patients with Bioprosthetic Valves in the Pulmonary Position. Ann Pediatr Cardiol. 2017 Jan-Apr;10(1):11-17.

Callahan R, Bergersen L, Lock JE, Marshall AC.  Transcatheter Pulmonary Valve Replacement and Acute Increase in Diastolic Pressure are Associated with Increases in Both Systolic and Diastolic Pulmonary Artery Dimensions. Pediatr Cardiol. 2017 Mar;38(3):456-464.


Callahan R, Trucco SM, Wearden PD, Beerman LB, Arora G, Kreutzer J. Outcomes of Pediatric Patients Undergoing Cardiac Catheterization While on Extracorporeal Membrane Oxygenation. Pediatr Cardiol. 2015 Mar;36(3):625-32.

Leadership and Memberships

Memberships in Professional Organizations

2022-present, The Pediatric and Congenital Interventional Cardiovascular Society (PICS)
2014-present, The Society for Cardiovascular Angiography and Interventions (SCAI)
2013-present, Pediatric & Congenital Interventional Cardiology Early Career Society (PICES)