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John Harlock

Professional Organizations

  • Royal College of Physicians and Surgeons of Canada
  • Canadian Society for Vascular Surgery
  • Canadian Medical Association
  • Ontario Medical Association
  • Hamilton Academy of Medicine
  • Association for Registered Diagnostic Sonographers
  • Society for Vascular Surgery

Research Interests

  • Clinical Practice of Vascular Surgery — Open and Endovascular management of vascular disease, including aneurysmal and peripheral arterial disease.
  • Advanced endovascular training in complex aortic repair.
    • Undergraduate, Post-graduate — Mentorship and clinical training of medical students and resident trainees. Electives supervisor to McMaster and visiting students
    • Research — Founding member of MacSERG (McMaster Surgical Education Research Group).
  • Educational — qualitative research into vascular trainee cohort. Exchange program with Stanford university experience
  • Clinical — Multiple meta-analyses on AAA and PVD. Clinical reviews and series on amputation rates, outcomes from bypass.
  • Basic — Collaboration with McMaster Institute – TARI to help further explore the molecular and microbiological basis of atheroma and atherosclerosis
  • Administration — Director of Residency Program, Vascular Surgery.


  • Active Staff, St. Joseph's Healthcare, Hamilton Ontario
  • Active Staff, Vascular Surgery, Hamilton Health Sciences, Hamilton Ontario
  • Active Staff, Niagara Health System

Featured Publications

  • Howe KL, Harlock J, Parry D. Management of Lower Extremity Ischaemia During Type A Dissection Repair.  EJVES Short Rep. 2018 Jun 11;39:44-46. doi: 10.1016/j.ejvssr.2018.05.011. eCollection 2018.

  • Hennessey H, Luckham E, Kayssi A, Wheatcroft MD, Greco E, Al-Omran M, Harlock J, Qadura M.  Optimization of rifampin coating on covered Dacron endovascular stent grafts for infected aortic aneurysms.  J Vasc Surg. 2018 Mar 1. pii: S0741-5214(17)32650-2. doi: 10.1016/j.jvs.2017.10.069.

  • Naji F, Javidan AP, Khan S, Srivatsav V, Rapanos T, Harlock J. Level of clinical evidence presented at the Society for Vascular Surgery Annual Meeting during a 5-year period (2012-2016). J Vasc Surg. 2018 Mar;67(3):951-959. doi: 10.1016/j.jvs.2017.10.053. Review.

  • Strauss S, Engels P, Harlock J. Distal Placement of Resuscitative Endovascular Balloon Occlusion of the Aorta (REBOA) to Restore Hemodynamic Stability in a Patient With Proximal Aortic Rupture. J Endovasc Ther. 2018 Apr;25(2):257-260. doi: 10.1177/1526602818757012. Epub 2018 Feb 6.

  • Naji F, Srivatsav V, Qadura M, Harlock J, Andrinopoulos T, Iyer V, Rapanos T.  Evaluating the Effectiveness of Internal Iliac Artery Branched Endovascular Stent Grafts.  Ann Vasc Surg. 2017 Nov;45:247-252. doi: 10.1016/j.avsg.2017.06.126. Epub 2017 Jul 6.​

  • Biccard BM, Scott DJA, Chan MTV, Archbold A, Wang CY, Sigamani A, Urrútia G, Cruz P, Srinathan SK, Szalay D, Harlock J, Tittley JG, Rapanos T, Elias F, Jacka MJ, Malaga G, Abraham V, Berwanger O, Montes FR, Heels-Ansdell DM, Hutcherson MT, Chow CK, Polanczyk CA, Szczeklik W, Ackland GL, Dubois L, Sapsford RJ, Williams C, Cortés OL, Le Mananch Y, Devereaux PJ.  Myocardial Injury After Noncardiac Surgery (MINS) in Vascular Surgical Patients: A Prospective Observational Cohort Study.  Ann Surg. 2017 May 8. doi: 10.1097/SLA.0000000000002290.

  • Hopkins RB, Burke N, Harlock J, Jegathisawaran J, Goeree R, Economic burden of illness associated with diabetic foot ulcers in Canada. BMC Health Serv Res. 2015 Jan 22;15:13
  • Vucemilo I, Harlock JA, Qadura M, Guirgis M, Gowing RN, Tittley JG. Hybrid repair of symptomatic aberrant right subclavian artery and Kommerell's diverticulum. Ann Vasc Surg. 2014 Feb;28(2);411-20
  • Harlock J, Qadura M, Lee G, Szalay D. Infected Aortic Stent Graft with Proprionobacterium Acnes. Vascular and Endovascular Surgery 2013. Jul;47(5):394-6
  • Qadura M, Pervaiz F, Harlock J, Al-Alzzoni A, Farrokhyar F, Kahnamoui K, Szalay D, Rapanos T. Mortality and Reintervention Following Elective AAA Repair. J Vasc Surg; Jun;57(6):1676-83
  • Turgeon AF, Lauzier F, Simard JF, Scales DC, Burns KE, Moore L, Zygun DA, Bernard F, Meade MO, Dung TC, Ratnapalan M, Todd S, Harlock J, Fergusson DA; Canadian Critical Care Trials Group. Mortality associated with withdrawal of life-sustaining therapy for patients with severe traumatic brain injury: a Canadian multicentre cohort study. CMAJ. 2011 Oct 4;183(14):1581-8.
  • Iyer V, Harlock J. A new and forgotten indication for aortic fenestration. J Endovasc Ther. 2011 Apr;18(2):261-2.
  • Louie BE, Harlock J, Hosein A, Miller JD. Laser therapy for an obstructing primary tracheal lymphoma in a patient with AIDS. Can Respir J. 2005 Mar;12(2):86-8.


  • B.Sc. — University of Waterloo
  • B.Ed. — University of Western Ontario
  • M.D. — McMaster University
  • M.Sc.- McMaster University Health Research Methodology
  • FRCS (C) General Surgery — Division of General Surgery, Department of Surgery, McMaster University
  • Fellowship in Vascular Surgery — McMaster University, Stanford University (California USA)
  • FRCS (C) Vascular Surgery - Division of Vascular Surgery, Department of Surgery, McMaster University
  • FACS - Fellow of the American College of Surgeons
  • American Board Certified - American Board of Surgery
  • Registered Physician in Vascular Interpretation— American Registry for Diagnostic Medical Sonography



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