Dr. Andrew Baker is the Chief of the Departments of Critical Care and of Anesthesia, and the Medical Director of the Surgery and Critical Care Program at St. Michael’s Hospital, Unity Health Toronto. He is the inaugural Cara Phelan Chair of Critical Care Medicine and a Professor and the Vice Chair, Clinical Affairs of the Department of Anesthesiology and Pain Medicine at the University of Toronto. He is currently the Incident Commander of the GTA Hospitals IMS Command Centre as well as the Incident Commander of Ontario Critical Care COVID Command Centre.  He has been involved in provincial organizations, such as Trillium Gift of Life Network as a director for ten years, and as a subject matter expert for Critical Care Services Ontario on ethical issues of access.  Andrew directs a brain injury laboratory in the Keenan Research Centre and is involved in biomarker studies in brain injury and critical illness.  He publishes and speaks internationally on his clinical and laboratory research.

Recent Publications

  1. Barrett KA, VandeVyvere C, Haque N, Gao M, Yan S, Lebovic G, Ball I, Bodmer NS, Born KB, Dhanani S, Ferguson ND, Neilipovitz D, Perkhun A, Scott M, Sullivan M, Thériault J, Munshi L, Slutsky AS, Jüni P, Baker AJ, on behalf of the Ontario COVID-19 Science Advisory Table. Critical Care capacity during the COVID-19 pandemic. Science Briefs of the Ontario COVID-19 Science Advisory Table. 2021;2(51). .  C
  2. Barretto T, Park E, Telliyan T, Liu E, Gallagher D, Librach C,  Baker AJ. Vascular dysfunction after modeled traumatic brain injury is preserved with administration of umbilical cord derived mesenchymal stromal cells and is associated with modulation of the angiogenic response. J Neurotrauma. 2021 Oct 1;38(19):2747-2762 PMID: 33899499.  SRA
  3. Trahtemberg U, Rottapel R, Dos Santos CC; Di Battista AP, Slutsky AS, Baker AJ, Fritzler MJ. COVID‑19‑associated autoimmunity as a feature of acute respiratory failure.  Intensive Care Med. 2021 Jul;47(7):801-804.   PMID: 33928414. C
  4. Trahtemberg U, Rottapel R, Dos Santos CC, Slutsky A, Baker A, Fritzler MJ. Anticardiolipin and other antiphospholipid antibodies in critically ill COVID-19 positive and negative patients. Ann Rheum Dis. 2021 Sep;80(9):1236-1240.  PMID: 33903092. C
  5. Shemie SD, Torrance S, Wilson L, Hornby L, MacLean J, Mohr J, Gillrie C, Badiwala MV, Baker A, Freed DH, MD, Simpson C, Teitelbaum J, Brodrecht D, Healey A. Heart donation and transplantation after circulatory determination of death: expert guidance from a Canadian  consensus building process. Can J Anaesth. 2021 May;68(5):661-671. PMID: 33543427.   C
  6. Dhanani S, Hornby L, van Beinum A, Scales NB, Hogue M, Baker A, Beed S, Boyd JG, Chandler JA, Chassé M, D’Aragon F, Dezfulian C, Doig CJ, Duska F. Friedrich O, Gardiner D, Gofton T, Harvey D, Herry C, Isac G, Kramer AH, Kutsogiannis DJ, Maslove DM, Meade M, Mehta S, Munshi L, Norton L, Pagliarello G, Ramsay T, Rusinova K, Scales D, Schmidt M, Seely A, Shahin J, Slessarev M, So D, Talbot H, van Mook WNKA, Waldauf P, Weiss M, Wind JT, and Shemie SD, for the Canadian Critical Care Trials Group and the Canadian Donation and Transplantation Research Program. Resumption of cardiac activity after withdrawal of life-sustaining measures. N Engl J Med 2021;384:345-52.  C
  7. Chin K, Cazorla-Bak M-P, Liu E, Nghiem L, Zhang Y, Yu J, Wilson DF, Vinogradov SA, Gilbert RE, Connelly KA,. Evans RG, Baker AJ, Mazer, Hare MT. Renal microvascular oxygen tension during hyperoxia and acute hemodilution assessed by osphorescence quenching and excitation with blue and red light. Can J Anesth/J Can Anesth.  Can J Anaesth. 2021 Feb;68(2):214-225 PMID: 33174162. C
  8. Greer DM, Shemie SD, Lewis A, Torrance S, Varelas P, Goldenberg FD, Bernat JL, Souter M, Topcuoglu MA, Alexandrov AW, Baldisseri M, Bleck T, Citerio G, Dawson R, Hoppe A, Jacobe S, Manara A, Nakagawa TA, Pope TM, Silvester W, Thomson D, Al Rahma H, MD; Rafael Badenes R, Baker AJ, Cerny V, Chang C,. Chang TR, Elena Gnedovskaya E, Han M-K, Honeybul S, Jimenez E, Kuroda Y, Gang Liu G, Mallick UK, Marquevich V, Mejia-Mantilla J, Piradov M, Quayyum S, Shrestha GS, Su Y, Timmons SD, Teitelbaum J, Videtta W, Zirpe K, Sung G. Determination of brain death/death by neurologic criteria The World Brain Death Project.   2020 Sep 15;324(11):1078-1097. PMID: 32761206.  C
  9. Cho S-J, Park E, Telliyan T, Baker A, Reid AY. Zebrafish model of post-traumatic epilepsy. Epilepsia. 2020 Jun 27. doi: 10.1111/epi.16589.  PMID 32592416: C
  10. Barretto TA, Park K, Maghen L, Park E, Kenigsberg S, Gallagher D, Liu E, Gauthier-Fisher A, Librach C, Baker AJ. Axon degeneration is rescued with human umbilical cord perivascular cells: A potential candidate for neuroprotection after traumatic brain injury. Stem Cells Dev. 2020 Feb 15;29(4):198-211. PMID: 31701812. SRA
  11. Park E, McCutcheon V, Telliyan T, Liu E, Eisen R, Kinio A, Tavakkoli J, Baker AJ. Remote ischemic conditioning improves outcome independent of anesthetic effects following shockwave-induced traumatic brain injury. IBRO Rep. 2019 Dec 17;8:18-27. PMID: 31909289. SRA

Affiliations & Other Activities

  • Chief Commander, Ontario Critical Care Covid-19 Command Centre
  • Incident Commander, GTA Hospital IMS
  • Chief, Department of Anesthesia, St Michael’s Hospital, Unity Health Toronto
  • Chief, Department of Critical Care, St. Michael’s Hospital Medical, Unity Health Toronto
  • Medical Director, Surgery and Critical Care Program, St. Michael’s Hospital, Unity Health Toronto
  • Professor, Departments of Anesthesia and Surgery, University of Toronto