Division of Hematology & Thromboembolism

Kathryn E. Webert


Associate Professor, Hematology and Thromboembolism, and Molecular Medicine and Pathology

Director of Operations of Transfusion Services in the Hamilton Regional Laboratory Medicine Program (HRLMP)

Investigator, McMaster Transfusion Research Program (MTRP)

Associate Medical Director with Canadian Blood Services Southwestern Ontario

Education and Professional Standing

  • BSc, Queen's University, 1992
  • MD, University of Western Ontario, 1996
  • FRCPC Internal Medicine, 2000
  • FRCPC Hematology 2001
  • MSc (HRM), McMaster University, 2009
  • FRCPC Clinical Investigator, 2009
  • Graduate Diploma in Health Services and Policy Research, Ontario Training Council and McMaster University, 2009

Research Focus

Dr. Webert's areas of research interest include bleeding in patients with bone marrow failure and the utilization of blood products. She was the co-principal investigator of a pilot clinical trial to investigate the role of hemoglobin level on the frequency of bleeding in patients with acute leukemia and patients undergoing stem cell transplantation. She is also developing a measurement tool to accurately document the severity of bleeding episodes. She is a recipient of several operating grants from Canadian Blood Services and a McMaster Department of Medicine Internal Career Award.

Clinical Focus

Dr. Webert's clinical interests include transfusion medicine, benign hematology, and hemostasis and coagulation. 

Academic Interests

Dr. Kathryn Webert is an Assistant Professor with the Department of Medicine and the Department of Molecular Medicine and Pathology, an investigator with the McMaster Transfusion Research Program, and an Associate Medical Director with Canadian Blood Services.  She is the Director of Operations for Transfusion Services within the HRLMP.  Dr. Webert is involved in teaching medical residents within the Hematology, Internal Medicine and Transfusion Medicine residency programs.

Selected Publications

Hayward CP, Pai M, Liu Y, Moffat KA, Seecharan J, Webert KE, Cook RJ, Heddle NM.  Diagnostic utility of light transmission platelet aggregometry:  results from a prospective study of individuals referred for bleeding disorder assessments.  J Thromb Haemost 2009; 7:676-684.

Heddle NM, Eyles J, Webert KE, Arnold E, McCurdy BR.  A policy informing qualitative study to improve the process of blood product recalls and withdrawals.  Transfusion 2008; 48:2585-2595.

Carcao MD, Webert KE.   On-label versus off-label use of recombinant activated factor VII: a comprehensive review of use in two Canadian centers.  Semin Hematol. 2008;45(2 Suppl 1):S68-71.

Hayward CP, Moffat KA, Pai M, Liu Y, Seecharan J, McKay H, Webert KE, Cook RJ, Heddle NM.  An evaluation of methods for determining reference intervals for light transmission platelet aggregation tests on samples with normal or reduced platelet counts. Thromb Haemost. 2008;100:134-145.

Pavenski K, Webert KE, Goldman M. Consequences of transfusion of platelet antibody: a case report and literature review. Transfusion 2008; 48:1981-1989.

Heddle NM, Arnold DM, Boye D, Webert KE, Resz I, Dumont LJ. Comparing the efficacy and safety of apheresis and whole blood-derived platelet transfusions: a systematic review. Transfusion 2008; 48:1447-1458.

Webert KE, Cook RJ, Couban S, Carruthers J, Lee KA, Blajchman MA, Lipton JH, Brandwein JM, Heddle NM.  A multicenter pilot randomized controlled trial of the feasibility of an augmented red blood cell transfusion strategy for patients treated with induction chemotherapy for acute leukemia or stem cell transplantation. Transfusion 2008; 48(1):  81-91.

Webert KE, Arnold DM, Molnar, L, Carruthers J, Almonte T, Decker K, Seroski W, Reed J, Chan A, Pai M, Walker I.  Utilization of recombinant activated factor VII in Southern Ontario in 85 patients with and without hemophilia. Haemophilia 2007; 13:518-26.

Webert KE, Cook RJ, Sigouin CS, Rebulla P, Heddle NM. The risk of bleeding in thrombocytopenic patients with acute myeloid leukemia. Haematologica 2006; 91:1530-1537.

Webert KE, Cook RJ, Couban S, Carruthers, J, Heddle N.  A study of the agreement between patient self-assessment and study personnel assessment of bleeding symptoms.  Transfusion 2006; 46:1926-1933.

Webert KE, Blajchman MA.  Transfusion-related Acute Lung Injury.  Current Opinion in Hematology 2005; 12:480-487.

Cook RJ, Heddle NM, Rebulla P, Sigouin C, Webert KE.  Methods for the Analysis of Bleeding Outcomes in Randomized Trials of Platelet Transfusion Triggers.  Transfusion 2004; 44:1135-42.

Webert KE, Mittal R, Sigouin C, Heddle NM, Kelton JG.  A retrospective, 11-year analysis of obstetrical patients with Idiopathic Thrombocytopenic Purpura.  Blood 2003; 102:4306-11.

Heddle NM, Cook RJ, Webert KE, Sigouin C, Rebulla P.  Methodological issues in the use of bleeding as an outcome in transfusion medicine studies. Transfusion 2003; 43:742-52. 

Webert KE, Blajchman M.  Transfusion-related acute lung injury. Transfusion Medicine Reviews, 2003; 17:252-62.