Blood Transfusion Strategies During Major Surgery
Starting soon · Not applicable
Conditions studied: Perioperative Red Blood Cell Transfusion
In brief
The goal of this randomized clinical trial is to address the uncertainty surrounding blood transfusion strategies in the operating room for adult patients undergoing major surgery. The main question it aims to answer is: Does a higher hemoglobin threshold for blood transfusion during surgery reduce the risk of serious complications or death after surgery compared with a lower hemoglobin threshold? Researchers will compare a liberal and a restrictive transfusion strategy during surgery and the first few hours of recovery. Participants will be randomly assigned to one of two blood transfusion strategies. Blood transfusions will be given to maintain either a higher hemoglobin level (90-100 g/L) or a lower hemoglobin level (70-80 g/L) during surgery and while in the recovery room after surgery. Participants will also complete questionnaires about their quality of life and recovery at 30 and 90 days after surgery.
Key facts
- Study ID
- NCT07748663
- Run by
- Ottawa Hospital Research Institute
- People needed
- 5058
- Starts
- 2026-08-19
- Expected to finish
- 2035-03-31
- Last updated by the study team
- 2026-08-06
Who can join
Age: 18 and older. Sex: any. Healthy volunteers: not accepted.
You may qualify if…
- Adult patients, age ≥18.
- Elective or urgent surgery.
- Risk of red blood cell transfusion of at least 10 percent.
- Preoperative hemoglobin of less than 130 g/L.
- Intraoperative hemoglobin of < 100 g/L at any time during surgery.
You may not qualify if…
- Active major hemorrhage as indication for surgery (e.g. ruptured aneurysm, polytrauma, etc.)
- Acute coronary syndrome or myocardial infarction within the past 6 weeks.
- Cardiac surgery, lung transplantation, or liver transplantation as the indication for surgery (a history of such surgery is allowed)
- Surgery for moderate to severe (Glasgow Coma Scale (GCS) score ≤ 12) traumatic brain injury
- Sickle cell disease (sickle cell trait is allowed)
- Pregnancy or obstetrical surgery
- Patient refusal of blood products
- Inability to provide consent
- Previous randomization in the TOPGUN(-Pilot) trial
Where it is running
- The Ottawa Hospital — Ottawa, Ontario, Canada
- Centre Hospitalier de l'Université de Montréal — Montreal, Quebec, Canada
Full record on ClinicalTrials.gov
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