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Stephen McKellar

Stephen McKellar, MD, MSc

Languages spoken: Dutch, English

Academic Information

Departments Adjunct - Surgery

Divisions: Cardiothoracic Surgery

Academic Office Information

Research Interests

  • Adult Cardiac Surgery
  • Valvular and Aortic Disease
  • Genetic Basis fo Cardiovascular Disease
  • Heart and Lung Transplantation
  • Surgical Treatment of Heart Failure
  • Mechanical Circulatory Support Devices

Dr. McKellar is a native of Salt Lake City and received his Bachelor of Arts from the University of Utah and his Doctor of Medicine from the George Washington University School of Medicine. He completed his General Surgical and Cardiothoracic Surgical training at the Mayo Clinic in Rochester, Minnesota in a combined, integrated training program. During his time at Mayo Clinic, he also received a Masters Degree of Biomedical Research from the Mayo Graduate School during a two-year research fellowship.
He is trained in all areas of adult cardiac and general thoracic surgery and has additional expertise in heart and lung failure and their treatment; specifically, mechanical circulatory support devices (left ventricular assist devices) and heart and lung transplantation.
He has published extensively in many areas of adult cardiothoracic surgery including valvular heart disease, ascending aortic aneurismal disease but has a particular research interest in mechanical circulatory support and surgical strategies for right ventricular failure.

Education History

Residency Mayo Clinic
Mayo Clinic College of Medicine
Research Fellow Mayo Clinic
Research Fellow
Mayo Clinic
Professional Medical The George Washington University School of Medicine
University of Utah

Selected Publications

Journal Article

  1. Bartline PB, McKellar SH, Kinikini DV (2016). Resection of a Large Innominate Vein Aneurysm in a Patient with Neurofibromatosis Type 1. Ann Vasc Surg, 30, 157.e1-5.
  2. Wachter SB, McCandless SP, Gilbert EM, Stoddard GJ, Kfoury AG, Reid BB, McKellar SH, Nativi-Nicolau J, Saidi A, Barney J, McCreath L, Koliopoulou A, Wright SE, Fang JC, Stehlik J, Selzman CH, Drakos SG (2015). Elevated resting heart rate in heart transplant recipients: innocent bystander or adverse prognostic indicator? Clin Transplant, 29(9), 829-34.
  3. Healy AH, Koliopoulou A, Drakos SG, McKellar SH, Stehlik J, Selzman CH (2015). Patient-controlled conditioning for left ventricular assist device-induced myocardial recovery. Ann Thorac Surg, 99(5), 1794-6.
  4. McKellar SH, Javan H, Bowen ME, Liu X, Schaaf CL, Briggs CM, Zou H, Gomez AD, Abdullah OM, Hsu EW, Selzman CH (2015). Animal model of reversible, right ventricular failure. J Surg Res, 194(2), 327-33.
  5. Greiten LE, McKellar SH, Rysavy J, Schaff HV (2014). Effectiveness of rivaroxaban for thromboprophylaxis of prosthetic heart valves in a porcine heterotopic valve model. Eur J Cardiothorac Surg, 45(5), 914-9.
  6. Maltais S, Topilsky Y, Tchantchaleishvili V, McKellar SH, Durham LA, Joyce LD, Daly RC, Park SJ (2012). Surgical treatment of tricuspid valve insufficiency promotes early reverse remodeling in patients with axial-flow left ventricular assist devices. J Thorac Cardiovasc Surg, 143(6), 1370-6.
  7. Maltais S, McKellar SH, Hasin T, Topilsky Y, Rayji T, Joyce LD, Daly RC, Kushwaha SS, Park SJ (2011). Tricuspid valve insufficiency in patients with axial-flow left ventricular assist devices. J Heart Lung Transplant, 30, S20.
  8. McKellar SH, Abel S, Camp CL, Suri RM, Ereth MH, Schaff HV (2011). Effectiveness of dabigatran etexilate for thromboprophylaxis of mechanical heart valves. J Thorac Cardiovasc Surg, 141(6), 1410-6.
  9. McKellar SH, Allen MS, Cassivi SD, Nichols FC 3rd, Shen KR, Wigle DA, Deschamps C (2011). Laparoscopic conversion from Nissen to partial fundoplication for refractory dysphagia. Ann Thorac Surg, 91(3), 932-4.
  10. McKellar SH, MacDonald RJ, Michelena HI, Connolly HM, Sundt TM 3rd (2011). Frequency of cardiovascular events in women with a congenitally bicuspid aortic valve in a single community and effect of pregnancy on events. Am J Cardiol, 107(1), 96-9.
  11. McKellar SH, MacDonald RJ, Michelena HI, Connolly HM, Sundt TM (2011). Pregnancy and cardiovascular events in women with congenitally bicuspid aortic valve: a community-based study. Am J Cardiol, 107, 96-99.
  12. McKellar SH, Michelena HI, Li Z, Schaff HV, Sundt TM 3rd (2010). Long-term risk of aortic events following aortic valve replacement in patients with bicuspid aortic valves. Am J Cardiol, 106(11), 1626-33.
  13. McKellar SH, Li Z, Michelena HI, Schaff HV, Sundt TM (2010). Predictors of Aortic Events Following Aortic Valve Replacement in Patients with Bicuspid Aortic Valves. Am J Cardiol, 106, 1626-1633.
  14. Garcia-Rinaldi R, Carro-Pagan C, Schaff HV, McKellar SH, Thompson JL 3rd, Quinones J, Rodriguez-Acosta JF (2009). Initial experience with dual antiplatelet thromboprophylaxis using clopidogrel and aspirin in patients with mechanical aortic prostheses. J Heart Valve Dis, 18(6), 617-25; discussion 626.
  15. Hoffmann NE, Siddiqui SA, Agarwal S, McKellar SH, Kurtz HJ, Gettman MT, Ereth MH (2009). Choice of hemostatic agent influences adhesion formation in a rat cecal adhesion model. J Surg Res, 155(1), 77-81.
  16. Garcia-Rinaldi RF, Carro-Pagan C, Schaff HV, McKellar SH, Thompson JL, Quinones J, Rodriquez-Acosta JF (2009). Dual antiplatelet therapy with clopidogrel and aspirin prevent thromboembolism in patients with mechanical aortic prostheses. J Heart Valve Dis, 18, 617-26.
  17. McKellar SH, Thompson JL 3rd, Garcia-Rinaldi RF, Macdonald RJ, Sundt TM 3rd, Schaff HV (2008). Short- and long-term efficacy of aspirin and clopidogrel for thromboprophylaxis for mechanical heart valves: an in vivo study in swine. J Thorac Cardiovasc Surg, 136(4), 908-14.
  18. McKellar SH, Brown ML, Schaff HV, Frye RL, Sundt TM (2008). Coronary revascularization in patients aged 80 and older: a systematic review and meta-analysis. Nat Clin Pract Cardiovasc Med, 5(738-46).
  19. McKellar SH, Tester DJ, Yagubyan M, Majumdar R, Ackerman MJ, Sundt TM 3rd (2007). Novel NOTCH1 mutations in patients with bicuspid aortic valve disease and thoracic aortic aneurysms. J Thorac Cardiovasc Surg, 134(2), 290-6.
  20. McKellar SH, Thompson JL, Schaff HV (2007). A model of heterotopic aortic valve replacement for studying thromboembolism prophylaxis in mechanical valve prostheses. J Surg Res, 141(1), 1-6.
  21. McKellar SH, Schaff HV, Dearani JA, Daly RC, Mullany CJ, Orszulak TA, Sundt TM 3rd, Connolly HM, Warnes CA, Puga FJ (2007). Intermediate-term results of ascending-descending posterior pericardial bypass of complex aortic coarctation. J Thorac Cardiovasc Surg, 133(6), 1504-9.
  22. Majumdar R, Miller DV, Ballman KV, Unnikrishnan G, McKellar SH, Sarkar G, Sreekumar R, Bolander ME, Sundt TM 3rd (2007). Elevated expressions of osteopontin and tenascin C in ascending aortic aneurysms are associated with trileaflet aortic valves as compared with bicuspid aortic valves. Cardiovasc Pathol, 16(3), 144-50.


  1. Selzman CH, Madden JL, Healy AH, McKellar SH, Koliopoulou A, Stehlik J, Drakos SG (2015). Bridge to removal: a paradigm shift for left ventricular assist device therapy. [Review]. Ann Thorac Surg, 99(1), 360-7.
  2. McKellar SH, Sundt TM (2009). Valve replacement options in the setting of an ascending aortic aneurysm. [Review]. Future Cardiol, 5(4), 375-83.

Book Chapter

  1. Stulak JM, McKellar SH, Park SJ (2012). Ventricular assist devices: Which one and when. In Braunwald’s Heart Disease (9th). Elsevier.
  2. McKellar SH (2011). End-stage heart failure. In Mery CM, Turek JW (Eds.), TSRA Review of Cardiothoracic Surgery (1st). Chicago: Thoracic Surgery Residents Association.
  3. McKellar SH (2011). Ascending aortic aneurysms. In Mery CM, Turek JW (Eds.), TSRA Review of Cardiothoracic Surgery (1st). Chicago: Thoracic Surgery Residents Association.
  4. McKellar SH (2011). Combined carotid and coronary artery surgery. In Mery CM, Turek JW (Eds.), TSRA Review of Cardiothoracic Surgery (1st). Chicago: Thoracic Surgery Residents Association.
  5. McKellar SH, Brown ML, Schaff HV, Frye RL (2010). Is there an optimal revascularization strategy in diabetic patients with ischemic heart disease? In Rizza RA, Vella A (Eds.), Controversies in Diabetes Management. Wiley-Blackwell.
  6. McKellar SH, Cassivi SD (2008). Pleural Effusion and Empyema Thoracis. In Conn’s Current Therapy (60th). W.B. Saunders.

Case Report

  1. McKellar SH, Durham LA 3rd, Scott JP, Cassivi SD (2010). Successful lung transplant from donor after cardiac death: a potential solution to shortage of thoracic organs. Mayo Clin Proc, 85(2), 150-2.
  2. McKellar SH, Matthews LR (2009). Images in clinical medicine. Traumatic diaphragmatic rupture with intrathoracic liver herniation. N Engl J Med, 360(5), e7.
  3. McKellar SH, Allred BD, Marks JD, Cowley CG, Classen DC, Gardner SC, Long JW (1999). Treatment of infected left ventricular assist device using antibiotic-impregnated beads. Ann Thorac Surg, 67(2), 554-5.


  1. McKellar SH (2015). De novo allosensitization only seen with biventricular assist device support. J Thorac Cardiovasc Surg, 149(4), 1166-7.


  1. McKellar SH, Takieddine S, Majumdar R, Sundt TM 3rd (2006). Molecular changes occurring with aneurysm formation: possible impact of sampling error. [Letter to the editor]. J Thorac Cardiovasc Surg, 131(1), 254-5; author reply 255.


  1. McKellar SH, Zehr KJ (2006). Aortic valve repair for aortic insufficiency. [Web]. CTSNet Expert’s Techniques; Adult Cardiac. Available: