Colorado PROFILES, The Colorado Clinical and Translational Sciences Institute (CCTSI)
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Last Name
Institution

Michael D Rizzari

TitleAssociate Professor
InstitutionUniversity of Colorado Denver - Anschutz Medical Campus
DepartmentSOM-SRG

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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    1. Reich DJ, Mao S, Satish S, Nassar A, Rizzari M, Al-Adra DP, DiNorcia J, Woloszyn J, Doyle MBM, Bohorquez H, Mihaylov P, Saharia A, Merani S, Wehrle CJ, Miller C, Axelrod D, Langnas A, Melcher ML, Akoad M, Ghobrial M, Kubal C, Roll G, Cohen A, Chapman WC, Pinna A, de Vera M, Florman S, Foley DP, Abouljoud M, Quintini C, Hashimoto K, Croome K, Taner CB, Schlegel A. Portal-Venous Hypothermic Oxygenated Perfusion for Liver Transplant: A Randomized Clinical Trial. JAMA Surg. 2026 May 27. PMID: 42201712.
      View in: PubMed
    2. Chang W, Xu MR, George A, Kingeter M, Henson CP, Mishra K, Montenovo M, Rizzari M, Siegrist K. Hyperkalemia in liver transplantation. J Clin Anesth. 2025 04; 103:111822. PMID: 40139028.
      View in: PubMed
    3. Tracy KM, Shishido Y, Petrovic M, Murphy A, Adesanya T, Fortier AK, Harris TR, Cortelli M, Tucker WD, François SA, Petree B, Raietparvar K, Simon V, Johnson CA, Simonds E, Poland J, Glomp GA, Crannell C, Liang J, Marshall A, Hinton A, Shaver CM, Demarest CT, Ukita R, Shah AS, Rizzari M, Montenovo M, Rauf MA, McReynolds M, Bacchetta M. 10 degree C static storage of porcine donation after circulatory death livers improves biliary viability and mitigates ischemia-reperfusion injury. Am J Transplant. 2025 Jul; 25(7):1417-1431. PMID: 40120647.
      View in: PubMed
    4. Shishido Y, Tracy KM, Petrovic M, Adesanya T, Fortier AK, Raietparvar K, Glomp GA, Simonds E, Harris TR, Simon V, Tucker WD, Petree B, Cortelli M, Cardwell NL, Crannell C, Liang J, Murphy AC, Fields BL, McReynolds M, Demarest CT, Ukita R, Rizzari M, Montenovo M, Magliocca JF, Karp SJ, Rauf MA, Shah AS, Bacchetta M. Novel Dynamic Organ Storage System Enhances Liver Graft Function in a Porcine Donation After Circulatory Death Model. ASAIO J. 2025 Jul 01; 71(7):560-570. PMID: 39693205.
      View in: PubMed
    5. Shamaa TM, Kitajima T, Ivanics T, Shimada S, Mohamed A, Yeddula S, Rizzari M, Collins K, Yoshida A, Abouljoud M, Nagai S. Variation of Liver Transplant Practice and Outcomes During Public Holidays in the United States: Analysis of United Network for Organ Sharing Registry. Transplant Direct. 2023 Apr; 9(4):e1463. PMID: 37009167.
      View in: PubMed
    6. Shimada S, Shamaa T, Ivanics T, Miyake K, Kitajima T, Rizzari M, Yoshida A, Abouljoud M, Moonka D, Nagai S. Effects of the implementation of acuity circle policy on waitlist and post-transplant outcomes of liver re-transplantation. Clin Transplant. 2023 06; 37(6):e14977. PMID: 36951511.
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    7. Shimada S, Shamaa T, Ivanics T, Kitajima T, Adhnan M, Collins K, Rizzari M, Yoshida A, Abouljoud M, Salgia R, Nagai S. Multiple Pretransplant Treatments for Patients Without Pathological Complete Response may Worsen Posttransplant Outcomes in Patients with Hepatocellular Carcinoma. Ann Surg Oncol. 2023 Mar; 30(3):1408-1419. PMID: 36434482.
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    8. Shamaa TM, Kitajima T, Ivanics T, Shimada S, Yeddula S, Mohamed A, Rizzari M, Collins K, Yoshida A, Abouljoud M, Nagai S. Can Weather Be a Factor in Liver Transplant Waitlist and Posttransplant Outcomes? Analysis of United Network for Organ Sharing Registry. Transplant Proc. 2022 Oct; 54(8):2254-2262. PMID: 36210193.
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    9. Nagai S, Ivanics T, Kitajima T, Shimada S, Shamaa TM, Collins K, Rizzari M, Yoshida A, Moonka D, Abouljoud M. Disparities in the Effects of Acuity Circle-based Liver Allocation on Waitlist and Transplant Practice Between Centers. Transplant Direct. 2022 Oct; 8(10):e1356. PMID: 36176726.
      View in: PubMed
    10. Shimada S, Shamaa T, Ivanics T, Kitajima T, Collins K, Rizzari M, Yoshida A, Abouljoud M, Moonka D, Lu M, Nagai S. Liver Transplant Recipient Characteristics Associated With Worse Post-Transplant Outcomes in Using Elderly Donors. Transpl Int. 2022; 35:10489. PMID: 36090776.
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    11. Shamaa TM, Shamaa O, Crombez C, Konel JM, Kitajima T, Shimada S, Ivanics T, Mohamed A, Collins K, Nagai S, Yoshida A, Abouljoud M, Rizzari M. The use of normothermic liver preservation in combined liver and lung transplantation: A single-center experience. Am J Transplant. 2022 09; 22(9):2261-2264. PMID: 35384271.
      View in: PubMed
    12. Markmann JF, Abouljoud MS, Ghobrial RM, Bhati CS, Pelletier SJ, Lu AD, Ottmann S, Klair T, Eymard C, Roll GR, Magliocca J, Pruett TL, Reyes J, Black SM, Marsh CL, Schnickel G, Kinkhabwala M, Florman SS, Merani S, Demetris AJ, Kimura S, Rizzari M, Saharia A, Levy M, Agarwal A, Cigarroa FG, Eason JD, Syed S, Washburn WK, Parekh J, Moon J, Maskin A, Yeh H, Vagefi PA, MacConmara MP. Impact of Portable Normothermic Blood-Based Machine Perfusion on Outcomes of Liver Transplant: The OCS Liver PROTECT Randomized Clinical Trial. JAMA Surg. 2022 03 01; 157(3):189-198. PMID: 34985503.
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    13. Shimada S, Ivanics T, Kitajima T, Shamaa T, Rizzari M, Collins K, Yoshida A, Abouljoud M, Moonka D, Zhang J, Lu M, Nagai S. Improvements in liver transplant outcomes in patients with HCV/HIV coinfection after the introduction of direct-acting antiviral therapies. Transpl Infect Dis. 2022 Apr; 24(2):e13808. PMID: 35157334.
      View in: PubMed
    14. Shimada S, Kitajima T, Suzuki Y, Kuno Y, Shamaa T, Ivanics T, Collins K, Rizzari M, Yoshida A, Abouljoud M, Moonka D, Nagai S. Impact on Waitlist Outcomes from Changes in the Medical Eligibility of Candidates for Simultaneous Liver-Kidney Transplantation Following Implementation of the 2017 Organ Procurement and Transplantation Network/United Network for Organ Sharing Policy in the United States. Ann Transplant. 2022 Feb 18; 27:e934850. PMID: 35177580.
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    15. Kitajima T, Henry M, Ivanics T, Yeddula S, Collins K, Rizzari M, Yoshida A, Abouljoud MS, Nagai S, Moonka D. Incidence and Risk Factors for Fatal Graft-versus-host Disease After Liver Transplantation. Transplantation. 2021 12 01; 105(12):2571-2578. PMID: 33449608.
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    16. Ivanics T, Leonard-Murali S, Mouzaihem H, Moonka D, Kitajima T, Yeddula S, Shamaa MT, Rizzari M, Collins K, Yoshida A, Abouljoud M, Nagai S. Extreme hyponatremia as a risk factor for early mortality after liver transplantation in the MELD-sodium era. Transpl Int. 2021 12; 34(12):2856-2868. PMID: 34580929.
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    17. Nagai S, Suzuki Y, Kitajima T, Ivanics T, Shimada S, Kuno Y, Shamaa MT, Yeddula S, Samaniego M, Collins K, Rizzari M, Yoshida A, Abouljoud M. Paradigm Change in Liver Transplantation Practice After the Implementation of the Liver-Kidney Allocation Policy. Liver Transpl. 2021 11; 27(11):1563-1576. PMID: 34043869.
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    18. Kitajima T, Moonka D, Yeddula S, Collins K, Rizzari M, Yoshida A, Abouljoud MS, Nagai S. Reply. Liver Transpl. 2021 08; 27(8):1217-1218. PMID: 33786986.
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    19. Al-Kurd A, Kitajima T, Delvecchio K, Tayseer Shamaa M, Ivanics T, Yeddula S, Yoshida A, Rizzari M, Collins K, Abouljoud M, Nagai S. Short recipient warm ischemia time improves outcomes in deceased donor liver transplantation. Transpl Int. 2021 Aug; 34(8):1422-1432. PMID: 34170584.
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    20. Kitajima T, Moonka D, Yeddula S, Collins K, Rizzari M, Yoshida A, Abouljoud MS, Nagai S. Outcomes in Living Donor Compared With Deceased Donor Primary Liver Transplantation in Lower Acuity Patients With Model for End-Stage Liver Disease Scores <30. Liver Transpl. 2021 07; 27(7):971-983. PMID: 33492764.
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    21. Yankol Y, Bugeaud E, Zens T, Rizzari M, Mecit N, Leverson GE, Foley D, Mezrich JD, Kanmaz T, Andaçoglu OM, D'Alessandro AM, Acarli KS, Kalayoglu M, Fernandez LA. A comparison of rates and severity of chronic kidney disease in deceased-donor and living-donor liver transplant recipients: times matter Turk J Med Sci. 2021 04 30; 51(2):610-622. PMID: 33037873.
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    22. Martins PN, Rizzari MD, Ghinolfi D, Jochmans I, Attia M, Jalan R, Friend PJ. Design, Analysis, and Pitfalls of Clinical Trials Using Ex Situ Liver Machine Perfusion: The International Liver Transplantation Society Consensus Guidelines. Transplantation. 2021 04 01; 105(4):796-815. PMID: 33760791.
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    23. Rizzari MD, Safwan M, Sobolic M, Kitajima T, Collins K, Yoshida A, Abouljoud M, Nagai S. The Impact of Portal Vein Thrombosis on Liver Transplant Outcomes: Does Grade or Flow Rate Matter? Transplantation. 2021 02 01; 105(2):363-371. PMID: 32217946.
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    24. Ivanics T, Rizzari M, Moonka D, Al-Kurd A, Delvecchio K, Kitajima T, Elsabbagh AM, Collins K, Yoshida A, Abouljoud M, Nagai S. Retransplantation outcomes for hepatitis C in the United States before and after direct-acting antiviral introduction. Am J Transplant. 2021 03; 21(3):1100-1112. PMID: 32794649.
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    25. Nagai S, Chau LC, Kitajima T, Yeddula S, Collins K, Rizzari M, Yoshida A, Abouljoud MS, Moonka D. A Share 21 model in liver transplantation: Impact on waitlist outcomes. Am J Transplant. 2020 08; 20(8):2184-2197. PMID: 32155314.
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    26. Kitajima T, Moonka D, Yeddula S, Rizzari M, Collins K, Yoshida A, Abouljoud MS, Nagai S. Liver transplant waitlist outcomes in alcoholic hepatitis compared with other liver diseases: An analysis of UNOS registry. Clin Transplant. 2020 05; 34(5):e13837. PMID: 32073688.
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    27. Safwan M, Gosnell J, Collins K, Rizzari M, Yoshida A, Abouljoud M, Nagai S. Effects of Intraoperative Continuous Renal Replacement Therapy on Outcomes in Liver Transplantation. Transplant Proc. 2020 Jan - Feb; 52(1):265-270. PMID: 31889542.
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    28. Takahashi K, Nagai S, Collins KM, Safwan M, Rizzari MD, Schnickel GT, Yoshida A, Abouljoud MS. Factors associated with low graft regeneration in the early phase after living donor liver transplantation. Clin Transplant. 2019 10; 33(10):e13690. PMID: 31400156.
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    29. Ivanics T, Munie S, Nasser H, Leonard-Murali S, Yoshida A, Nagai S, Collins K, Abouljoud M, Rizzari M. Combined Chylothorax and Chylous Ascites Complicating Liver Transplantation: A Report of a Case and Review of the Literature. Case Rep Transplant. 2019; 2019:9089317. PMID: 31428509.
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    30. Nagai S, Collins K, Chau LC, Safwan M, Rizzari M, Yoshida A, Abouljoud MS, Moonka D. Increased Risk of Death in First Year After Liver Transplantation Among Patients With Nonalcoholic Steatohepatitis vs Liver Disease of Other Etiologies. Clin Gastroenterol Hepatol. 2019 12; 17(13):2759-2768.e5. PMID: 31004758.
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    31. Nagai S, Chau LC, Schilke RE, Safwan M, Rizzari M, Collins K, Yoshida A, Abouljoud MS, Moonka D. Effects of Allocating Livers for Transplantation Based on Model for End-Stage Liver Disease-Sodium Scores on Patient Outcomes. Gastroenterology. 2018 11; 155(5):1451-1462.e3. PMID: 30056096.
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    32. Nagai S, Safwan M, Collins K, Schilke RE, Rizzari M, Moonka D, Brown K, Patel A, Yoshida A, Abouljoud M. Liver alone or simultaneous liver-kidney transplant? Pretransplant chronic kidney disease and post-transplant outcome - a retrospective study. Transpl Int. 2018 May 02. PMID: 29722081.
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    33. Safwan M, Nagai S, Collins K, Rizzari M, Yoshida A, Abouljoud M. Impact of abdominal shape on living liver donor outcomes in mini-incision right hepatic lobectomy: Comparison among 3 techniques. Liver Transpl. 2018 04; 24(4):516-527. PMID: 29281863.
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    34. Sulejmani N, Nagai S, Safwan M, Rizzari MD, Raoufi M, Abouljoud MS, Ramesh M. Brincidofovir as Salvage Therapy for Adenovirus Disease in Intestinal Transplant Recipients. Pharmacotherapy. 2018 04; 38(4):470-475. PMID: 29457839.
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    35. Takahashi K, Nagai S, Putchakayala KG, Safwan M, Gosho M, Li AY, Kane WJ, Singh PL, Rizzari MD, Collins KM, Yoshida A, Abouljoud MS, Schnickel GT. Prediction of biliary anastomotic stricture after deceased donor liver transplantation: the impact of platelet counts - a retrospective study. Transpl Int. 2017 Oct; 30(10):1032-1040. PMID: 28605573.
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    36. Takahashi K, Nagai S, Putchakayala KG, Safwan M, Li AY, Kane WJ, Singh PL, Collins KM, Rizzari MD, Yoshida A, Schnickel GT, Abouljoud MS. Prognostic impact of postoperative low platelet count after liver transplantation. Clin Transplant. 2017 03; 31(3). PMID: 27992667.
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    37. Weegman BP, Kumar Sajja VS, Suszynski TM, Rizzari MD, Scott Iii WE, Kitzmann JP, Mueller KR, Hanley TR, Kennedy DJ, Todd PW, Balamurugan AN, Hering BJ, Papas KK. Continuous Quadrupole Magnetic Separation of Islets during Digestion Improves Purified Porcine Islet Viability. J Diabetes Res. 2016; 2016:6162970. PMID: 27843954.
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    38. Scalea JR, Redfield RR, Rizzari MD, Bennett R, Anderson ME, Anderson JE, Kaufman DB, Sollinger HW, Fernandez LA, D'Alessandro AM, Mezrich J. When Do DCD Donors Die?: Outcomes and Implications of DCD at a High-volume, Single-center OPO in the United States. Ann Surg. 2016 Feb; 263(2):211-6. PMID: 26181480.
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    39. Weegman BP, Suszynski TM, Scott WE, Ferrer Fábrega J, Avgoustiniatos ES, Anazawa T, O'Brien TD, Rizzari MD, Karatzas T, Jie T, Sutherland DE, Hering BJ, Papas KK. Temperature profiles of different cooling methods in porcine pancreas procurement. Xenotransplantation. 2014 Nov-Dec; 21(6):574-81. PMID: 25040217.
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    40. Suszynski TM, Rizzari MD, Gillingham KJ, Rheault MN, Kraszkiewicz W, Matas AJ, Chavers BM. Antihypertensive pharmacotherapy and long-term outcomes in pediatric kidney transplantation. Clin Transplant. 2013 May-Jun; 27(3):472-80. PMID: 23647497.
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    41. Suszynski TM, Rizzari MD, Scott WE, Eckman PM, Fonger JD, John R, Chronos N, Tempelman LA, Sutherland DE, Papas KK. Persufflation (gaseous oxygen perfusion) as a method of heart preservation. J Cardiothorac Surg. 2013 Apr 22; 8:105. PMID: 23607734.
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    42. Suszynski TM, Gillingham KJ, Rizzari MD, Dunn TB, Payne WD, Chinnakotla S, Finger EB, Sutherland DER, Najarian JS, Pruett TL, Matas AJ, Kandaswamy R. Prospective randomized trial of maintenance immunosuppression with rapid discontinuation of prednisone in adult kidney transplantation. Am J Transplant. 2013 Apr; 13(4):961-970. PMID: 23432755.
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    43. Minor T, Scott WE, Rizzari MD, Suszynski TM, Luer B, Efferz P, Papas KK, Paul A. Energetic recovery in porcine grafts by minimally invasive liver oxygenation. J Surg Res. 2012 Dec; 178(2):e59-63. PMID: 22445459.
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    44. Suszynski TM, Rizzari MD, Scott WE, Tempelman LA, Taylor MJ, Papas KK. Persufflation (or gaseous oxygen perfusion) as a method of organ preservation. Cryobiology. 2012 Jun; 64(3):125-43. PMID: 22301419.
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    45. Rizzari MD, Suszynski TM, Gillingham KJ, Dunn TB, Ibrahim HN, Payne WD, Chinnakotla S, Finger EB, Sutherland DE, Kandaswamy R, Najarian JS, Pruett TL, Kukla A, Spong R, Matas AJ. Ten-year outcome after rapid discontinuation of prednisone in adult primary kidney transplantation. Clin J Am Soc Nephrol. 2012 Mar; 7(3):494-503. PMID: 22282482.
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    46. Weegman BP, Taylor MJ, Baicu SC, Scott WE, Mueller KR, Kitzmann JD, Rizzari MD, Papas KK. Hypothermic Perfusion Preservation of Pancreas for Islet Grafts: Validation Using a Split Lobe Porcine Model. Cell Med. 2012 Jan 01; 2(3):105-110. PMID: 24083059.
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    47. Rizzari MD, Suszynski TM, Gillingham KJ, Matas AJ, Ibrahim HN. Outcome of living kidney donors left with multiple renal arteries. Clin Transplant. 2012 Jan-Feb; 26(1):E7-11. PMID: 22017317.
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    48. Rizzari MD, Suszynski TM, Gillingham KJ, Matas AJ. Consideration of donor age and human leukocyte antigen matching in the setting of multiple potential living kidney donors. Transplantation. 2011 Jul 15; 92(1):70-5. PMID: 21659945.
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    49. Suszynski TM, Rizzari MD, Kidder LS, Mueller K, Chapman CS, Kitzmann JP, Pongratz RL, Cline GW, Todd PW, Kennedy DJ, O'Brien TD, Avgoustiniatos ES, Schuurman HJ, Papas KK. Paramagnetic microparticles do not elicit islet cytotoxicity with co-culture or host immune reactivity after implantation. Xenotransplantation. 2011 Jul-Aug; 18(4):239-44. PMID: 21848541.
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    50. Rizzari MD, Suszynski TM, Kidder LS, Stein SA, O'Brien TD, Sajja VS, Scott WE, Kirchner VA, Weegman BP, Avgoustiniatos ES, Todd PW, Kennedy DJ, Hammer BE, Sutherland DE, Hering BJ, Papas KK. Surgical protocol involving the infusion of paramagnetic microparticles for preferential incorporation within porcine islets. Transplant Proc. 2010 Dec; 42(10):4209-12. PMID: 21168666.
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    51. Weegman BP, Kirchner VA, Scott WE, Avgoustiniatos ES, Suszynski TM, Ferrer-Fabrega J, Rizzari MD, Kidder LS, Kandaswamy R, Sutherland DE, Papas KK. Continuous real-time viability assessment of kidneys based on oxygen consumption. Transplant Proc. 2010 Jul-Aug; 42(6):2020-3. PMID: 20692397.
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    52. Scott WE, Weegman BP, Ferrer-Fabrega J, Stein SA, Anazawa T, Kirchner VA, Rizzari MD, Stone J, Matsumoto S, Hammer BE, Balamurugan AN, Kidder LS, Suszynski TM, Avgoustiniatos ES, Stone SG, Tempelman LA, Sutherland DE, Hering BJ, Papas KK. Pancreas oxygen persufflation increases ATP levels as shown by nuclear magnetic resonance. Transplant Proc. 2010 Jul-Aug; 42(6):2011-5. PMID: 20692395.
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    53. Scott WE, O'Brien TD, Ferrer-Fabrega J, Avgoustiniatos ES, Weegman BP, Anazawa T, Matsumoto S, Kirchner VA, Rizzari MD, Murtaugh MP, Suszynski TM, Aasheim T, Kidder LS, Hammer BE, Stone SG, Tempelman LA, Sutherland DE, Hering BJ, Papas KK. Persufflation improves pancreas preservation when compared with the two-layer method. Transplant Proc. 2010 Jul-Aug; 42(6):2016-9. PMID: 20692396.
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