Faculty profile

Stephen Fremes

ResearcherCardiac SurgeryUniversity of Toronto

This profile is built from public research funding records (CIHR, NSERC and SSHRC) and PubMed. We have not imported them from a University of Toronto directory, so their courses and email address may be missing. Find their university profile.

Stephen Fremes

Researcher

Cardiac Surgery

Health Sciences

University of Toronto

Toronto, Ontario, Canada

Supervision signals

Has led research grants, which requires an independent research appointment. Ask their department whether they supervise graduate students.
52 publications in the last five years, latest in 2026.
Senior (last) author on 5 recent papers, a sign of leading a research group.
Principal investigator on 5 research grants (5 CIHR), most recently in 2025.
Supervised 2 trainees who won CIHR awards, most recently in 2025.

These signals come from public records, including CIHR, NSERC and SSHRC funding decisions. Ask the professor or the graduate program whether they are taking new students.

Academic metrics

108

Publications

2,233

Citations

h-index

Collaborators

Grants

Publications by year

Counts cover the works listed on the university profile; citation counts come from Dimensions.

Profiles and links

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Signals and details

Research

Health Economics Mortality Coronary Artery Bypass Grafting Coronary Artery Disease Heart Failure Quality Of Life Bilateral Internal Thoracic Artery, Bita Coronary Artery Bypass Grafting, Cabg

Latest papers

Assessing the Cost Effectiveness of an Incremental Lipid-Lowering Therapy Approach After Coronary Artery Bypass Grafting Using Nationwide Data.
Journal of the American Heart Association · 2026
Quality indicators for transcatheter aortic valve implantation in Ontario, Canada: a population-based study.
BMJ open · 2026
Coronary physiology and intravascular imaging in surgical and percutaneous revascularization.
Current opinion in cardiology · 2026

All 108 publications

Latest funding

The effect of retrograde autologous priming on transfusion requirements after cardiac surgery (TheRAPy): a multiple period cluster-randomized crossover trial
CIHR · 2026 · Co-investigator
$2,008,736
The Lifetime Management of Severe Aortic Stenosis in Patients Younger than 65 Years Old.
CIHR · 2025 · Supervisor
$120,000
Direct Oral Anticoagulation versus vitamin K antagonist after Cardiac Surgery (DANCE) trial
CIHR · 2025 · Co-investigator
$100,000

All 24 grants and awards

108 publications.

Assessing the Cost Effectiveness of an Incremental Lipid-Lowering Therapy Approach After Coronary Artery Bypass Grafting Using Nationwide Data.

Deo SV, Ciminata G, Mahalwar G, Salerno PRVO, McAllister DA, Elgudin YE, Orkaby A, Virani S, Fremes S, Rajagopalan S, Sattar N, Pell JP

Journal of the American Heart Association2026

DOI: 10.1161/jaha.124.040272 PMID: 41944180

Quality indicators for transcatheter aortic valve implantation in Ontario, Canada: a population-based study.

Aktaa S, Haldenby O, Qiu F, Ko DT, Fremes S, Sud M, Lauck SB, Mamas MA, Blackman DJ, Webb JG, Wijeysundera HC

BMJ open2026

DOI: 10.1136/bmjopen-2026-123640 PMID: 42692520

Coronary physiology and intravascular imaging in surgical and percutaneous revascularization.

Elsherbini A, Patel SK, Marvasti TB, Verma M, Hassan SMA, Tam DY, Fremes S, Yau TM

Current opinion in cardiology2026

DOI: 10.1097/hco.0000000000001321 PMID: 42267487

Transesophageal echocardiography and pulmonary artery catheter use and short-term outcomes in patients undergoing coronary artery bypass surgery: A multi-center retrospective study.

Heybati K, Haldenby O, Fang J, Chiu J, Deng J, Moreno Garijo J, Perez P, Ko DT, Fremes S, Ouzounian M, Jerath A

BMC cardiovascular disorders2026

DOI: 10.1186/s12872-026-05927-1 PMID: 42069508

Outcomes of No-Touch Vs Conventionally Harvested Saphenous Veins for Coronary Artery Bypass Surgery: Individual Patient Data Meta-Analysis Protocol.

Gregg AC, Tian M, Gaudino M, Angelini G, Fremes S, Jeppsson A, Modrau IS, Redfors B, Sandner S, Sartipy U, Thelin S, Hu S, James S

CJC open2026

DOI: 10.1016/j.cjco.2026.01.008 PMID: 42146283

Medium to Long-Term Patient-Oriented Effectiveness of Surgical or Percutaneous Revascularization in Diabetes and Severe Coronary Artery Disease.

Vervoort D, Dai Y, Eddeen AB, Tuna M, Austin PC, Ouzounian M, Fremes S, Lee DS, Wijeysundera HC, Sun LY

CJC open2026

DOI: 10.1016/j.cjco.2026.02.017 PMID: 42483015

Rethinking Aortic Risk Stratification: Moving Beyond the Single Dimension.

Eliathamby D, Vervoort D, Chung JCY, Fremes S

The Canadian journal of cardiology2026Senior author

DOI: 10.1016/j.cjca.2026.02.027 PMID: 41720398

Mid-term Outcomes After Robotic Coronary Artery Bypass Grafting in the United States.

Nammalwar S, Elsherbini A, Sallam A, Razavi AA, Emerson D, Bowdish ME, Fremes S, Moussa F, Egorova N, Chikwe J, Tam DY

The Canadian journal of cardiology2026

DOI: 10.1016/j.cjca.2026.06.018 PMID: 42349651

Study design for an emulated trial of a 2 arm, parallel, stratified, adaptive, RCT of CABG versus PCI in people requiring myocardial revascularization at high risk (High-Risk REVASC).

Liao W, Rashid M, Brookes CL, Barber S, Turner RM, Gravel GM, Petrie MC, Lipsic E, Doenst T, Fremes S, Murphy GJ, High-Risk REVASC consortium

American heart journal2026

DOI: 10.1016/j.ahj.2026.107368 PMID: 41638385

Association between complications and mortality after cardiac surgery: Results from the VISION Cardiac Surgery prospective cohort study

Lamy A, Browne A, Whitlock RP, Chan MTV, Underwood MJ, Parlow JL, Allard RV, Lomivorotov VV, Marat A, Landoni G

Journal of Thoracic and Cardiovascular Surgery20262 citations

DOI: 10.1016/j.jtcvs.2026.04.056

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Stephen Fremes

Research

Latest papers

Latest funding

Assessing the Cost Effectiveness of an Incremental Lipid-Lowering Therapy Approach After Coronary Artery Bypass Grafting Using Nationwide Data.

Quality indicators for transcatheter aortic valve implantation in Ontario, Canada: a population-based study.

Coronary physiology and intravascular imaging in surgical and percutaneous revascularization.

Transesophageal echocardiography and pulmonary artery catheter use and short-term outcomes in patients undergoing coronary artery bypass surgery: A multi-center retrospective study.

Outcomes of No-Touch Vs Conventionally Harvested Saphenous Veins for Coronary Artery Bypass Surgery: Individual Patient Data Meta-Analysis Protocol.

Medium to Long-Term Patient-Oriented Effectiveness of Surgical or Percutaneous Revascularization in Diabetes and Severe Coronary Artery Disease.

Rethinking Aortic Risk Stratification: Moving Beyond the Single Dimension.

Mid-term Outcomes After Robotic Coronary Artery Bypass Grafting in the United States.

Study design for an emulated trial of a 2 arm, parallel, stratified, adaptive, RCT of CABG versus PCI in people requiring myocardial revascularization at high risk (High-Risk REVASC).

Association between complications and mortality after cardiac surgery: Results from the VISION Cardiac Surgery prospective cohort study

Frequent collaborators

Richard Whitlock

Emilie Belley-Cote

Marc Ruel

Philip Devereaux

Angela Jerath

Sean van Diepen

Andre Lamy

David Glineur

Juan Grau

Bobby Yanagawa

Jessica Spence

Summer Syed

Nadine Shehata

Emilie Belley-Côté

Emilie Belley-Côté

Sandra Lauck

Stephen Choi

Maneesh Sud

Josep Rodes Cabau

David Conen

Michael McGillion

Katherine Connolly

David Moher

Salim Yusuf

Flavia Kessler Borges

Jason Sutherland

Mario Gaudino

Guillaume Marquis-Gravel

Matteo Parotto

Nadia Giannetti

Cedric Manlhiot

Jacobo Moreno Garijo

Daniel Bainbridge

Mario Gaudino

Dave Nagpal

Jonathan Afilalo

Mansoor Husain

Robert Fowler

Francois Lamontagne

David Mazer