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Ian James Welsby

Professor of Anesthesiology
Anesthesiology, Cardiothoracic
Box 3094 Med Ctr, Durham, NC 27710
2301 Erwin Road, 5691H HAFS Building, Durham, NC 27710

Research Interests


Elucidating factors predisposing to thrombotic or hemorrhagic complications and adverse outcomes related to transfusion after cardiac surgery. Utilizing outcomes data after cardiac surgery to optimize transfusion safety in this patient group.

The clinical implications of the generation of antibodies to the composite heparin/platelet factor 4 antigen and the management of heparin induced thrombocytopenia (HIT), in collaboration with Dr TL Ortel, Duke Hematology, and exploring alternative anticoagulant regimens to improve anticoagulation during and after cardiac surgery for patients with HIT.

Improving the outcome associated with blood product transfusion in the cardiac surgical patient by developing techniques of microparticle elimination prior to RBC transfusion and autologous platelet harvest during cardiac surgery.

Selected Grants


Integrated Training in Anesthesiology Research

Inst. Training Prgm or CMEMentor · Awarded by National Institute of General Medical Sciences · 1996 - 2026

Hematology & Transfusion Medicine (T32)

Inst. Training Prgm or CMEPreceptor · Awarded by National Heart, Lung, and Blood Institute · 1975 - 2026

Cerus/BARDA CLI 00125 ReCePI study

Clinical TrialPrincipal Investigator · Awarded by Cerus Corporation · 2019 - 2024

Aridis 301

Clinical TrialPrincipal Investigator · Awarded by Aridis Pharmaceuticals Inc. · 2019 - 2023

Single cell RNA-Seq of stored RBC to detect Autologous Blood Transfusion

ResearchCollaborator · Awarded by Partnership for Clean Competition · 2021 - 2023

Clinical Study of a Method Comparison of Plasma Low in Mechanical Circulatory Support(MCS) procedures

Clinical TrialPrincipal Investigator · Awarded by HemoCue AB · 2022 - 2023

CytoSorbents REFRESH II

Clinical TrialPrincipal Investigator · Awarded by CytoSorbents Corporation · 2018 - 2022

HEMCS-037 Qstat Multi-site Precision Study

Clinical TrialPrincipal Investigator · Awarded by HemoSonics, LLC · 2021 - 2022

Rejuvenated RBC in Healthy Subjects

Clinical TrialPrincipal Investigator · Awarded by Biomet Biologics, LLC · 2017 - 2021

Point-of-Care RBC Washing to Prevent Transfusion-Related Pulmonary Complications

ResearchPrincipal Investigator · Awarded by Mayo Clinic · 2014 - 2020

ARrest RESpiraTory failure due to PNEUMONIA Phase 1

ResearchPrincipal Investigator · Awarded by Stanford University · 2020 - 2020

Aridis AR-105 Aerucin

Clinical TrialPrincipal Investigator · Awarded by Aridis Pharmaceuticals Inc. · 2018 - 2019

Detect autologous transfusion by novel separation and characterization of RBC storage exosomes

ResearchCo Investigator · Awarded by Partnership for Clean Competition · 2018 - 2019

Rejuvesol Ex Vivo ECMO

ResearchPrincipal Investigator · Awarded by Biomet Biologics, LLC · 2016 - 2019

14-505-Andexanet Alfa in Patients Receiving a Factor Xa Inhibitor Who Have Acute Major Bleeding

Clinical TrialPrincipal Investigator · Awarded by Portola Pharmaceuticals · 2015 - 2019

Evaluation of Quantra System in Adult Patients Undergoing Major Surgical Procedures

ResearchPrincipal Investigator · Awarded by HemoSonics, LLC · 2017 - 2018

In Vitro Removal of Rejuvesol from Rejuvenated Units by Cell Saver

ResearchPrincipal Investigator · Awarded by Biomet Biologics, LLC · 2016 - 2018

Rejuvesol Washed RBC in Sickle Cell Patients Requiring Frequent Transfusions

ResearchPrincipal Investigator · Awarded by Biomet Biologics, LLC · 2016 - 2017

LIPS-A: Lung Injury Prevention Study with Aspirin

Clinical TrialPrincipal Investigator · Awarded by Mayo Clinic · 2011 - 2016

Clinical Significance of protamine/heparin antibodies after CPB

ResearchCo Investigator · Awarded by National Institutes of Health · 2011 - 2014

Thrombosis and Hemostasis Centers Research and Prevention Network

ResearchConsultant · Awarded by Centers for Disease Control and Prevention · 2002 - 2013

Rare Thrombotic Diseases Clinical Research Network

ResearchAnesthesiologist · Awarded by National Institutes of Health · 2004 - 2010

Integrated Program for Persons with Hemostatic Disorders

ResearchCollaborator · Awarded by Centers for Disease Control · 2001 - 2007

External Relationships


  • Anesthesia Labs
  • Global Blood Therapeutics now bought by Pfizer

This faculty member (or a member of their immediate family) has reported outside activities with the companies, institutions, or organizations listed above. This information is available to institutional leadership and, when appropriate, management plans are in place to address potential conflicts of interest.