Ralf J. Holzer, MD, MSc

Ralf J. Holzer, MD, MSc, is Assistant Director of Cardiac Catheterization and Interventional Therapy at The Heart Center at Nationwide Children's Hospital. He is Associate Professor of Clinical Pediatrics at The Ohio State University College of Medicine. Dr. Holzer received his medical degree from Johannes Gutenberg Universitat Mainz in Germany. After completing his residency, he received fellowship training at Royal Liverpool Children’s NHS Trust in England and University of Chicago Children’s Hospital.

Gender:

• Male

Languages Spoken:

• German
• English

Medical School

• Johannes Gutenberg Universitat Mainz
  Date Completed: 11/30/1994

Internship

• University Hospital Mainz
  Date Completed: 12/31/1995

Internship

• Alexandra Hospital Reddich
  Date Completed: 07/31/1996

Residency

• Hillingdon Hospital
  Date Completed: 02/28/1997

Residency

• Great Ormond Street Hospital for Sick Children
  Date Completed: 08/31/1997

Residency

• Northwick Park Hospital
  Date Completed: 02/28/1998

Residency

• Harefield Hospital
  Date Completed: 08/31/1998

Residency

• St Bartholomew's Hospital
  Date Completed: 08/03/1999

Fellowship

• Royal Liverpool Children's NHS Trust
  Date Completed: 02/28/2003

Fellowship

• University of Chicago Children's Hospital
  Date Completed: 02/28/2004

Fellowship

• Royal Liverpool Children's NHS Trust
  Date Completed: 07/01/2004

Department:

• Pediatrics

Section:

• Cardiology

Speciality:

• Pediatric Cardiology
  
• Pediatrics
  

Date of Appointment at Nationwide Children’s Hospital:

• 09/23/2005

• Robert N. Vincent, John Moore, Lee Bensen, Lisa Bergersen, Ralf Holzer, Kathy Jenkins, Richard Ringel, Jonathan Rome, Joan Michaels. 2013. First Review of Communicty Practice wth Respect to Aortic and Pulmonary Artery Stenting.  JACC. Vol. 61, no. 10. (March): eE548.
• Robert N. Vincent, John Moore, Lee Bensen, Lisa Bergersen, Ralf Holzer, Kathy Jenkins, Richard Ringel, Jonathan Rome, Joan Michaels. 2013. The Impact Registry (Improving Pediatric and Adult Congenital Treatment) Updates and Trends.  JACC. Vol. 61, no. 10_S. (March): eE463.
• Robert N. Vincent, John Moore, Lee Bensen, Lisa Bergersen, Ralf Holzer, Kathy Jenkins, Richard Ringel, Jonathan Rome, Joan Michaels. 2013. The Impact Registry: First Review of Communicty Practice with Respect to Aortic and Pulmonary Valvulplasty.  JACC. Vol. 61, no. 10. (March): eE547.
• Robert N. Vincent, John Moore, Lee Bensen, Lisa Bergersen, Ralf Holzer, Kathy Jenkins, Richard Ringel, Jonathan Rome, Joan Michaels. 2013. The Impact Registry: Firt Review of Communicty And Practice With Respect to Device Closure of ASD and PDA.  JACC. Vol. 61, no. 10. (March): eE448.
• Backes, Carl Jr. Holzer Ralf, Cua Cliff, El-Said Howaida, Armsby Laurie, Kreutzr Jacqueline, Bergersen Lisa, Moore John, Gauvreau Kimberlee. 2013. Low Weight as an Independent risk factor for adverse events during caridac catheterization of infants.  Catheterization and Cardiovascular Interventions. Vol. epub ahead of print, no. epub ahead of print. (February): eepub ahead of print.
• Andrew Yates, Phillip Thrush, Bryce Kerlin, Karen Texter, Steven Cassidy, Mark Galantowicz, Ralf Holzer, John P. Cheatham. 2013. Safety and Preliinary Results of a Standard Care Protocol to Prevent Pulmoanry Artery Thrombosis After Comprehensive Stage 2.  Catheterization and Cardiovascular Interventions. Vol. 81, no. 1. (January): eP88: 210.
• Andrew Yates, Phillip Thrush, Bryce Kerlin, Karen Texter, Steven Cassidy, Mark Galantowicz, Ralf Holzer, John P. Cheatham. 2013. Pulmonary Artery Thrombosis After Comprehensive Stage 2 Surgical Palliation: Incidence and Treatment.  Catheterizaton Cardiovascular Interventions. Vol. 81, no. 1. (January): eP87:209.
• Roberta Rodeman, Sharon Cheatham, RoslynColvin, Joanne Chisolm, Patrick McConnell, Ralf Holzer, Mark Galantowicz, John Cheatham. 2013. A Retrospective Review of Pulmonary Valve Implantation and Immediate Outcomes. A Comparison of Three Imlanation Techniques.  Catheterizaton Cardiovascular Interventions. Vol. 81, no. 1. (January): eP45:196.
• Ralf J. Holzer, John P. Cheatham. 2013. Hybrid Procedures In Congenital Heart Disease Hypoplastic Left Heart Syndrome/ Muscular Ventricular Septal Defect Stenting of Pulmonary Arteries. In Congenital and Structural Heart Disease. Chicago: Wiley Blackwell.
• Christopher Learn, Lisa Bergersen, Ralf Holzer, Michael Landzberg, Curt Daniels. 2013. Adverse Event Rates and Risk Factors in Adults Undergoing Carsdiac Cathterization at Pediatric Hospitals-Results from C3PO.  Catheterization and Cardiovascular Interventions. Vol. epub ahead of print, no. epub ahead of print. (January): eepub ahead of print.
• Marc Cribbs,Curt Daniels, Sharon Cheatham, Ralf Holzer,John Cheatham, Ali Zaidi. 2013. Combined Surgical and Transcatheter (Hybrid) Procedures for Adults with Congenital Heart Disease.  Catheterizaton Cardiovascular Interventions. Vol. 81, no. 1. (January): eP24:189.
• Joanne Chisolm, Sharon Cheatham, Ralf Holzer, John Cheatham. 2013. Transcatheter Device Closure of Atrial Septal Defects in Patints Weighing <10 Kg.  Catheterizaton Cardiovascular Interventions. Vol. 81, no. 1. (January): eO12:178.
• Galantowicz M, Cheatham JP, Phillips AP, Holzer R, Hill S, Olshove V. 2013. Hybrid Procedrues for Congenital Heart Disease. In Pediatric Cardiac Surgery. fourth ed. Edited by Wiley Blackwell. Hoboken, NJ: Wiley Blackwell.
• Corey Stiver, Thomas Preston, Daniel Gomez, Joanne Chisolm, Sharon Cheatham, Patrick McConnell, Mark Galantowicz, John Cheatham, Ralf Holzer. 2013. Extracorporeal membrane oxygenation (ECMO) has been a beneficial therapy in patients with profound respiratory or cardiac failure but little data exits on cardaic catheterization performed on ECMO Support.  Catheterizaton Cardiovascular Interventions. Vol. 81, no. 1. (January): eP53:198.
• Janet Simsic, Jason Swinning, Sheilah Harrison, Tanya Maria Kempton, John P. Cheatham, Douglas Teske, Ralf J. Holzer. 2012. Quality Initiative to Reduc Radiation Exposure and Detect Radiation Injury in the Congenital Cardiac Catheterization Lab.  Circulation Quality of Care and Outcomes. Vol. 5, no. 6. (November): eA:277.
• Ralf J. Holzer, Kimberlee Gauvreau, Jacqueline Kreutzer, Sara Trucco, Alejandro Torres, habana Shahanavaz, Lisa Bergersen. 2012. Safety and Efficacy of Balloon Pulmonary Valvuloplasty: A Multicenter Experince.  Pediatric and Congenital Heart Disease. Vol. 80, no. October: 663-672.
• Ralf J.Holzer, John P. Cheatham. 2012. Therapeutic Cardiac Catheterization. In Moss and Adams. Philadelphia, PA: Lippincott Williams & Watkins.
• Jack Stines, Ralf Holzer. 2012. Stenting of Aortic Coarctation.  Progress in Pediatric Cardiology. Vol. 2, no. 33. (May): 161-167.
• Carl Backes, Lisa Bergersen, Kimberlee Gauvreau, Cliff Cua, Jacqueline Kreutzer, Laurie Armsby, Howaida El-Said, Ralf Holzer. 2012. Cardiac Catheterization in Infants with a weighy <2 kg; Results of a multi-center registry.  Catheterizaton Cardiovascular Interventions. Vol. 79, no. 5. (April): O-2, S2.
• Learn C, Phillips A, Chisolm J, Hill S, Cheatham J, Winch P, Galantowicz M, Holzer R. 2012. Pulmonary Atresia with VSD and Multifocal Pulmonary Blood Supply: Does an Intensive Interventional Approach Improve the Outcome?.  Congenital Heart Disease. Vol. 7, no. 2. (March): 111-21.
• Thomas Forbes, Dennis Kim, Wei Du, Daniel Turner, Ralf Holzer, Zahid Amin, Ziyad Hijazi,. 2011. Comparison of Surgical Stent, and Balloon Angioplasty Treatment of Native Coarctation of the Aorta.  Journal of American Cardiology. Vol. 25, no. 58. (December): 2664-2674.
• Bergersen L, Gauvreau K, Foerster SR, Marshall AC, McElhinney DB, Beekman RHIII, Hirsch R, Kreutzer J, Balzer D, Vincent J, Hellenbrand WE, Holzer, R, Cheatham JP, Moore JW, Burch G, Armsby L, Lock JE, Jenkins KJ. 2011. Catheterization for Congenital Heart Disease Adjustment for Risk Method (CHARM).  JACC Cardiovascular Intervention. Vol. 4, no. 9. (September): 1037-1046.
• Thrush PT, Mackman CA, Lawrence P, Naguib A, Yates AR, Cassidy SD, Chisolm JL, Hill SL, Cheatham JP, Holzer RJ. 2011. An Institutional Approach to Interventional Strategies for Complete Vascular Occlusion.  Pediatric Cardiology. Vol. 32, no. 6. (August): 713-723.
• Sawdy J, Kempton TM, Olshove V, Gocha M, Chisolm JL, Hill SL, Kirk A, Cheatham JP, Holzer R. 2011. Use of a Dose-Dependent Follow-up Protocol and Mechanisms to Reduce Patients and Staff Radiation Exposure in Congenital and Structural Interventions.  Catheter Cardiovascular Intervention. Vol. 78, no. 1. (July): 136-142.
• Holzer R, Bergersen L, Gauvreau K, Lock J, Cheatham J, Kreutzer J, Leahy R, Murphy J, Bergersen L. 2011. Balloon Angioplasty and Stenting of Branch Pulmonary Arteries: Adverse Events and Procedureal Characteristics- Results of a Multi-Institutional Registry.  Catheter Cardiovascular Interv. Vol. 4, no. 3. (June): 287-296.
• Husain N, Holzer R. 2011. Complications Associated with Transcatehter Therapy of Acute Vascular Thrombosis.  Cardiac Interventions Today. Vol. 5, no. 3. (May): 25-32.
• Forbes TJ, Hijazi ZM, Young G, Ringewald JM, Aquino PM, Vincent RN, Qureshi AM, Rome JJ, Rhodes JF Jr., Jones TK, Moskowitz WB, Holzer RJ, Zamora R. 2011. Pediatric Catheterization Laboratory Anticoagulation with Bivalirudin.  Catheter Cardiovascular Intervention. Vol. 5, no. 77. (April): 671-679.
• E. Chambers C, A Fetterly K, Holzer R, Paul Lin PJ, C Blankenship J, Balter S, L Laskey W. 2011. Radiation Safety Program for the Cardiac Catheterization Laboratory.  Catheter Cardiovascular Intervention. Vol. 4, no. 77. (March): 546-556.
• Bergerson L, Gauvreau K, Marshall A, Kreutzer J, Beekman R, Hirsch R, Foerster S, Balzer D, Vincent J, Hellenbrand W, Holzer RJ, Cheatham JP, Moore J, Lock J, Jenkins K. 2011. Procedure type Risk Categories for Pediatric and Congenital Cardiac Catheterization.  Circulation Interventions. Vol. 4, no. 9. (January): 188-194.
• Egan MJ, Hill SL, Boettner BL, Holzer RJ, Phillips A, Galantowicz M, Cheatham JP, Kovalchin JP. 2011. Predictors of Retrograde Aortic Arch Obstruction After Hybrid Palliation of Hypoplastic Left Heart Syndrome.  Pediatric Cardiology. Vol. 1, no. 32. (January): 67-75.
• Yates A, Welty S, Gest A, Cheatham J, Holzer R, Kirk A, Hill S, Texter K. 2011. Transcatheter Elimination of Left to Right Shunts in Infants with Broncopulmonary Dysplaisa is Feasible and Safe.  Congenital Heart Disease. Vol. 4, no. 6. (January): 330-337.
• Holzer R, Cheatham John P. 2010. Shifting the Balance Between Aortic Insufficiency and Residual Gradients After Balloon Aortic Valvuloplasty.  Journal of the American College of Cardiology. Vol. 21, no. 65. (November): 1750-1751.
• Holzer R, Qureshi S, Ghasemi G, Vincent J, Sievert H, Gruenstein D, Weber H, Alday L, Petrone A, Zellers T, Cheathaam JP, Slack M, Rome J. 2010. Stenting of Aortic Coarctation: Acute, Intermediate, and Long-Term Results of a Prospective Multi-Institutional Registry.  Catheter Cardiovascular Intervention. Vol. 4, no. 76. (October): 553-563.
• Hill SL, Cheathasm JP, Holzer RJ, Phillips A, Galantowicz M. 2010. Hybrid Procedures: Evolution of Change in Managing Congenital Heart Disease.  Congenital Cardiology Today. Vol. 8, no. 7. (July): 11-16.
• Galantowicz M, Cheatham JP, Phililps AP, Holzer R, Hill S, Olshove V. 2010. Hybrid Procedures for Congenital Heart Disease. In Pediactric Cardiac Surgery. 4 ed. New York: Manel Sabate PCR Publishing.
• Holzer R, Marshall A, Kreutzer J, Hirsch R, Chisolm J, Hill S, Galantowicz M, Phillips A, Cheatham J, Bergerson L. 2010. Hybrid Procedures: Adverse Events and Procedural Characteristics-Results of a Multi-Institutional Registry.  Congenital Heart Disease. Vol. 3, no. 5. (June): 233-242.
• Bergerson L, Marshall A, Gauvreau K, Moore J, Foerster S, Balzer D, Beekman R, Hirsch R, Hellenbrand W, Vincent J, Cheatham J, Holzer R, Lock J, Jenkins K. 2010. Adverse Event Rates in Congenital Cardiac Catheterization-A Multi-Center Congenital Catheterization Experience.  Catheter Cardiovascular Interv. Vol. 75, no. 3. (February): 389-400.
• Egan M, Holzer RJ. 2009. Comparing Balloon Angioplasty, Stenting, and Surgery in the Treatment of Aortic Coarctation.  Expert Rev Cardiovasc Ther.. Vol. 7, no. 11. (December): 1401-1412.
• Holzer RJ, Sisk M, Chisolm JL, Hill SL, Olshove V, Phillips A, Cheatham JP, Galantowicz M. 2009. Completion Angiography After Cardiac Surgery for Congenital Heart Disease: Complementing the Intraoperative Imagin Modalities.  Pediatr Cardiol. Vol. 8, no. 30. (November): 1075-1082.
• Holzer RJ, Green J, Bergdall V, Chisolm JL, Hill SL, Galantowicz M, Cheatham JP, Phillips A. 2009. An Animal Model for Hybrid Stage I Palliation of Hypoplastic Left Heart Syndrome.  Pediatric Cardiology. Vol. 30, no. 7. (October): 922-927.
• Sawdy JM, Gocha MD, Olshove V, Chisolm JL, Hill SL, Phillips A, Galantowicz M, Cheatham JP, Holzer RJ. 2009. Radiation Protection During Hybrid Procedures: Innovation Creates New Challenges.  J Invasive Cardiol. Vol. 9, no. 21. (September): 437-440.
• Crum S, Cook S, Cheatham JP, Galantowicz M, Feltes T, Phillips A, Chan D, Holzer R, Sisk M, Cook L, Hickey J, Hill SL, Daniels CJ. 2009. Quality Outcomes for ACHD Patients Undergoing Cardiovascular Procedures and Non-Elective Admissions ijn a Free-Standing Children's Hospital.  Int J Cardiol. Vol. EPub Ahead of Print, no. August.
• Everett AD, Jennings J, Sibinga E, Owada C, Lim DS, Cheatham J, Holzer R, Ringewald J, Ringel R. 2009. Community Use of the Amplatzer Atrial Septal Defect Occluder: Results of the Multicenter MAGIC Atrial Septal Defect Study.  Pediatr Cardiol. Vol. 3, no. 30. (April): 240-247.
• Phillips AB, Green J, Bergdall V, Yu J, Monreal G, Gerhardt M, Cheatham JP, Galantowicz M, Holzer RJ. 2009. Teaching the "hybrid approach"- a novel swine model of muscular ventricular septal defect.  Pediatric Cardiology. Vol. 2, no. 30. (February): 114-118.
• Holzer RJ, Cheatham JP. 2009. Radiofrequency Perforation of the Pulmonary Valve in Patients with Pulmonary Atresia and Intact Ventricular Septum. In Complications in Percutaneous Interventions for Congenital & Structural Heart Disease. 1st ed. Edited by Hijazi ZM, Feldman T, Cheatham JP, Sievert H. New York: Informa.
• Holzer RJ. 2009. Pulmonary Valvuloplasty. In Complications in Percutaneous Interventions for Congenital & Structural Heart Disease. 1st ed. Edited by Hijazi ZM, Feldman T, Cheatham JP, Sievert H. New York: Informa.
• Holzer RJ. 2009. Tips & Tricks of PDA Closure. In Percutaneous Interventions Beyond Stenting Tips and Tricks for New Dossier Page 4 or 12 Technology. Edited by Manel Sabate. New York: Informa.
• Holzer RJ, Sisk M, Phillips A. 2009. Intraoperative Hybrid Stent Delivery Under Direct Vision Using Endoscopic Guidance.  Congenital Cardiology Today. Vol. 2, no. 7. (January): 1-7.
• Holzer RJ, Hijazi ZM. 2009. Case Studies in Congenital Cardiac Anomalies. In Hemodynamic Rounds, 3rd edition. 3rd ed. Edited by Morton J Kern. New York: Wiley.
• Holzer RJ, Cheatham JP. 2009. Occlusion of the Patent Arterial Duct. In Complications in Percutaneous Interventions for Congenital & Structural Heart Disease. 1st ed. Edited by Hijazi ZM, Feldman T, Cheatham JP, Sievert H. New York: Informa.
• Holzer RJ, Chisolm JL, Hill SL, Olshove V, Phillips A, Cheatham JP. 2008. Hybrid Stent Delivery in the Pulmonary Circulation.  J Invas Cardiol.
• Holzer R, Hijazi, ZM. 2008. The off-versus on-label use of Medical Devices in Interventional Cardiovascular Medicine? Clarifying the Ambiguity between Regulatory Labeling and Clinical Decision-Making? Part III: Structural Heart Disease Interventions.  Catheter Cardiovascular Interv. Vol. 72, no. November: 848-852.
• Phillips AB, Green J, Bergdall V, Yu J, Monreal G, Gerhardt M, Cheatham JP, Galatowicz M, Holzer RJ. 2008. Teaching the "Hybrid Approach": A Novel Swine Model of Muscular Ventricular Septal Defect.  Pediatr Cardiol.
• Holzer RJ, Sisk M, Phillips A. 2008. Hybrid Balloon Pulmoanry Valvuloplasty in a 700 G Infant: Thinking Outside the Box.  Catheter Cardiovascular Interv. Vol. 72, no. July: 92-96.
• Holzer R, Wood A, Chisolm JL, Hill SL, Phillips A, Galatowicz M, Cheatham JP. 2008. Atrial Septal Interventions in Patients with Hypoplastic Left Heart Syndrome.  Catheter Cardiovascular Interv. Vol. 5, no. 72. (May): 696-704.
• Holzer, Ralf, J; Chisolm, Joanne, L; Hill, Sharon, L; Cheatham, John P. 2008. Stenting complex aortic arch obstructions.  Catheterization and cardiovascular interventions. Vol. 71, no. 3. (February): 375-382.
• Holzer RJ, Cheatham JP. 2008. Transcatheter Procedure in Adolescents & Adults with Congenital Heart Disease. In Moss and Adams' Heart Disease in Infants, Children and Adolscents. Edited by Allen HD, Driscoll DJ, Shaddy RE, Feltes TF. Philadelphia, PA: Lippincott, Williams and Wilkins.
• Holzer RJ, Cheatham JP. 2008. Transcatheter Closure of ASDs - An overview of therapeutic options for atrial septal defect closure.  Cardiac Interventions Today.
• Holzer RJ, Cheatham JP. 2008. Therapeutic Cardiac Catheterization. In Moss and Adams' Heart Disease in Infants, Children, and Adolescents. Edited by Allen HD, Driscoll DJ, Shaddy RE, Feltes TF. Philadelphia, PA: Lippincott, Williams and Wilkins.
• Everett AD, Jennings J, Sibinga E, Owada C, Lim DS, Cheatham J, Holzer R, Ringewald J, Ringel R. 2008. Community use of the Amplatzer Atrial Septal Defect Occluder: Results of the Multicenter MAGIC Atrial Septal Defect Study.  Pediatr Cardiol (epub ahead of print).
• Holzer R, Chisolm JL, Hill SL, Olshove V, Phillips A, Cheatham JP, Galatowicz M. 2008. ‘Hybrid’ stent delivery in the pulmonary circulation.  J Invas Cardiol. Vol. 11, no. 20. (January): 592-599.
• Holzer RJ, Sisk JM, Lawrence, PE, Hill SL, Chisolm JL, Cheatham JP. 2007. Suture-Mediated Closure of Femoral Venous Access Sites after Cardiac Catheterization.  Congenital Cardiology Today. Vol. 8, no. 5. (August): 1-5.
• Holzer, Ralf, J; Chisolm, Joanne; Hill, Sharon, L; Cheatham, John P. 2006. Transcatheter devices used in the management of patients with congenital heart disease.  Expert review of medical devices. Vol. 3, no. 5. (September).
• Holzer, Ralf; de Giovanni, Jo; Walsh, Kevin, P; Tometzki, Andrew; Goh, Th; Hakim, Fakhri; Zabal, Carlos; de Lezo, Jose Suarez; Cao, Qi-Ling; Hijazi, Ziyad M. 2006. Transcatheter closure of perimembranous ventricular septal defects using the amplatzer membranous VSD occluder: immediate and midterm results of an international registry.  Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions. Vol. 68, no. 4. (September).
• Holzer R, Hardin J, Hill SL, Cheatham JP. 2006. Radiofrequency Energy- A Multifaceted Tool for the Congenital Interventionalist.  Congenital Cardiology Today. Vol. 4, no. 6. (June): 1-8.
• Everett, Allen, D; Ringel, Richard; Rhodes, John, F; Doyle, Thomas, P; Owada, Carl, Y; Holzer, Ralf, J; Cheatham, John, P; Ringewald, Jeremy; Bandisode, Varsha; Chen, Yu-Li; Lim, D Scott. 2006. Development of the MAGIC congenital heart disease catheterization database for interventional outcome studies.  Journal of interventional cardiology. Vol. 19, no. 2. (April).
• Holzer, Ralf; Ladusans, Ed; Kitchiner, Denise; Peart, Ian; Gladman, Gordon; Miles, Gail. 2006. Prioritization of congenital cardiac surgical patients using fuzzy reasoning--a solution to the problem of the waiting list?.  Cardiology in the young. Vol. 16, no. 3. (January).
• Holzer R, Cao QL, Hijazi ZM. 2006. Transcatheter Closure of ASD and PFO. In SCAI Interventional Cardiology Board Review. Edited by Morton J Kern. Philadelphia: Lippincot, Williams & Williams.
• Johnson R, Holzer R. 2005. Evaluation of asymptomatic heart murmurs.  Current Paediatrics. Vol. 15, no. 7. (December): 532-538.
• Holzer R, Chisolm JL, Hill SL, Cheatham JP. 2005. Transhepatic cardiac catheterization in complex congenital heart disease: Where there is a will, there is a way.  Congenital Cardiology Today. Vol. 3, no. 12. (December): 1-7.
• Holzer, Ralf; Cao, Qi-Ling; Hijazi, Ziyad M. 2005. Closure of a moderately large atrial septal defect with a self-fabricated fenestrated Amplatzer septal occluder in an 85-year-old patient with reduced diastolic elasticity of the left ventricle.  Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions. Vol. 64, no. 4. (April).
• Holzer, Ralf; Concilio, Karen; Hijazi, Ziyad M. 2005. Self-fabricated covered stent to exclude an aortic aneurysm after balloon angioplasty for post-surgical recoarctation.  The Journal of invasive cardiology. Vol. 17, no. 3. (March).
• Patel H, Holzer R, Cao QL, Hijazi ZM. 2005. Transcatheter Closure of Atrial Septal Defects using the Amplatzer Devices. In Interventional cardiology – Percutaneous Noncoronary Interventions. Edited by Herman HC. Totowa: Humana Press.
• Holzer R, Cao QL, Hijazi ZM. 2005. An Overview of Device Closure of Ventricular Septal Defects using the Amplatzer Devices. In Interventional cardiology – Percutaneous Noncoronary Interventions. Edited by Herman HC. Totowa: Humana Press.
• Holzer, Ralf; Cao, Qi-Ling; Hijazi, Ziyad M. 2004. Catheter interventions in adults with congenital heart disease: State of the art.  Expert review of cardiovascular therapy. Vol. 2, no. 5. (September).
• Holzer R, Cao QL, Hijazi ZM. 2004. Catheter interventions in adults with congenital heart disease: State of the art.  Expert Review of Cardiovascular Therapy. Vol. 2, no. 5. (September): 699-711.
• Holzer, R; Bockenkamp, B; Booker, P; Newland, P; Ciotti, G; Pozzi, M. 2004. The impact of cardiopulmonary bypass on selenium status, thyroid function, and oxidative defense in children.  Pediatric cardiology. Vol. 25, no. 5. (September).
• Holzer, Ralf; Johnson, Robert; Ciotti, Giovanna; Pozzi, Marco; Kitchiner, Denise. 2004. Review of an institutional experience of coronary arterial fistulas in childhood set in context of review of the literature.  Cardiology in the young. Vol. 14, no. 4. (August).
• Holzer R, Cao QL, Sandhu S, Hijazi ZM. 2004. The Amplatzer vascular plug – an addition to our interventional armamentarium.  Pediatric Cardiology Today. Vol. 2, no. 2. (June): 6-8.
• Holzer, Ralf; Latson, Larry; Hijazi, Ziyad M. 2004. Device closure of iatrogenic membranous ventricular septal defects after prosthetic aortic valve replacement using the Amplatzer membranous ventricular septal defect occluder.  Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions. Vol. 62, no. 2. (June).
• Holzer, Ralf; Balzer, David; Cao, Qi-Ling; Lock, Ken; Hijazi, Ziyad, M; Hijazi, Ziyad M. 2004. Device closure of muscular ventricular septal defects using the Amplatzer muscular ventricular septal defect occluder: immediate and mid-term results of a U.S. registry.  Journal of the American College of Cardiology. Vol. 43, no. 7. (April).
• Holzer, Ralf; Hijazi, Ziyad M. 2004. Interventional approach to congenital heart disease.  Current opinion in cardiology. Vol. 19, no. 2. (March).
• Holzer, Ralf; Balzer, David; Amin, Zahid; Ruiz, Carlos, E; Feinstein, Jeffrey; Bass, John; Vance, Michael; Cao, Qi-Ling; Hijazi, Ziyad M. 2004. Transcatheter closure of postinfarction ventricular septal defects using the new Amplatzer muscular VSD occluder: Results of a U.S. Registry.  Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions. Vol. 61, no. 2. (February).
• Holzer, Ralf; Waller, B Rush 3rd; Kahana, Madelyn; Hijazi, Ziyad M. 2003. Percutaneous closure of a giant coronary arteriovenous fistula using multiple devices in a 12-day-old neonate.  Catheterization and cardiovascular interventions : official journal of the Society for Cardiac Angiography & Interventions. Vol. 60, no. 2. (October).
• Ciotti, Giovanna; Holzer, Ralf; Pozzi, Marco; Dalzell, Mark. 2002. Nutritional support via percutaneous endoscopic gastrostomy in children with cardiac disease experiencing difficulties with feeding.  Cardiology in the young. Vol. 12, no. 6. (December).
• Holzer, R; Peart, I; Ciotti, G; Bolton-Maggs, P H B. 2002. Idiopathic multifocal intracardiac and pulmonary thrombosis: successful treatment with rTPA.  Pediatric cardiology. Vol. 23, no. 5. (September).
• Holzer, R; Franklin, R C G. 2002. Congenital heart disease and neuroblastoma: just coincidence?.  Archives of disease in childhood. Vol. 87, no. 1. (July).
• Holzer, Ralf; Ladusans, Edmund; Malaiya, Nilima. 2002. Aortopulmonary collateral arteries in a child with trisomy 21.  Cardiology in the young. Vol. 12, no. 1. (June).
• Staritz M. Alkier R. Krzoska B. THolzerT R. Grosse A. 1992. Time requirements for endoscopic diagnostic and therapeutic procedures: basal results of a multicentre study [13321 patients].  Zeitschrift für Gastroenterologie. Vol. 30, no. August: 509-518.
• Ralf J. Holzer, Mark Galantowicz, MD, John P. Cheatham. 0. Interventions for Univentricular Hearts. In Pediatric Cardiology, Cardiac Surgery, and Intensive Care.
• Ralf Holzer, Lisa Bergersen, Gauvreau Kimberlee, Jacqueline Kreutzer, John Moore, DB McElhinney. Results of a Multi-Institutional Registry (C3PO).  Cathetr Cardiovascular Interventions.
• Ralf J. Holzer. The Hybrid Procedure. In Atlas of Neonatology.
• Nazia Husain,Janaki Gokhale, Lisa Nicholson, Jhn P Cheatham, Ralf J Holzer, Clifford Cua. Comparing Non-Invasive Assessment of Systolic Funtion with Catheterizaton Data in Patients with Sngle Right Ventricles.  JACC.
• Cheatham SL, Holzer RJ, Chisolm JL, Cheatham JP. The Medtronic Melody Transcatheter Pulmonary Valve implanted at 24 mm Diameter.  Cathetr Cardiovascular Interventions.
• Sanjeet Hegde, Howeida El Said, Robert Beekman III, Lee Bensen, Lisa Bergersen, Ralf Holzer, Kathy Jenkins, Richard Ringle, Jonathan Rome, Robert Vincent, Gerard Martin. Transcatheter Device Closure of Atrial Septal Defects: A Safety Review.  Catheterizaton Cardiovascular Interventions.
• Holzer RJ, Cheatham JP. Therapeutic Cardiac Catheterization. In: Moss and Adams’ Heart Diseases in Infants, Children, and Adolescents, Seventh Edition, Lippincott, Williams & Wilkins, 2007.
• Holzer RJ, Cheatham JP. Transcatheter Procedure in Adolescents and Adults with Congenital Heart Disease. In: Moss and Adams’ Heart Diseases in Infants, Children, and Adolescents, Seventh Edition, Lippincott, Williams & Wilkins, 2007.
• Holzer RJ, Sisk JM, Lawrence PE, Hill SL, Chisolm JL, Cheatham JP. Suturemediated closure of femoral venous access sites after cardiac catheterization. Congenital Cardiology Today 5(8): 1-5, 2007.
• Phillips A, Holzer R, Bauer J, Green J, Bergdall V, Hill S, Gu X, Galantowicz M, Cheatham J. Animal Model of Perivalvular Leak for the Development of Novel Devices to Eliminate the Leak. Catheterization and Cardiovascular Interventions 70(1), July 1, 2007.