About this trial
The BRACKETS pilot study is a multicentre, prospective, randomized controlled trial of prophylactic preoperative tranexamic acid (TXA) versus placebo and, using a partial factorial design, of prophylactic preoperative desmopressin versus placebo.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Planned noncardiac surgery (elective, urgent, or emergency surgery);
Expected to require at least an overnight hospital admission after surgery;
Age ≥18 years; and
Informed consent is obtained to participate in the BRACKETS-Pilot Trial.
Disqualifiers
Undergoing cardiac surgery;
Undergoing intracranial neurosurgery;
Undergoing surgery for creation or revision of arteriovenous fistula or graft for dialysis access;
Planned use of prophylactic systemic TXA or ϵ-aminocaproic acid;
Trial design
Factorial
Treatments tested in this trial
Desmopressin Injectable Solution
DrugIntravenous desmopressin, 20 mcg, single dose administration.
Tranexamic Acid Injectable Product
DrugIntravenous tranexamic acid, 1000 mg single dose administration for patients with eGFR\<25 not yet receiving dialysis OR 500 mg single dose administration for patients receiving dialysis.
Placebo
Other interventionIntravenous 0.9% saline solution
Treatment groups
Trial outcomes
Primary outcomes
Rate of recruitment
A rate of 0.25 patients per study site per week
Receipt of the allocated study drug within 1 hour before start of surgery for the tranexamic acid factorial
Account of whether the patient began to receive study drug for the TXA factorial within an hour before skin incision. Target ≥80% of participants
Receipt of the allocated study drug within 1 hour before start of surgery for the desmopressin factorial
Account of whether the patient began to receive study drug for the desmopressin factorial within an hour before skin incision. Target ≥80% of participants
Completion of 30-day follow-up
Account of whether the patient or their next-of-kin could be contacted and completed the 30-day post-randomization assessment. Target ≥80% of participants
Secondary outcomes
Bleeding Independently Associated with Mortality after noncardiac Surgery (BIMS)
Number of patients who experience BIMS
Bleeding Score
10-category ordinal score. Minimum scores mean a better outcome. 0 denotes no bleeding or bleeding in which the nadir hemoglobin is ≥70 g/L, no red blood transfusion was given, no reoperation for reasons of bleeding occurred, and there was no death imminently or directly caused by bleeding. 1. denotes bleeding and post-operative hemoglobin \<70 g/L or 1 unit of blood (red blood cells or whole blood) transfused. 2. denotes bleeding and 2 units transfused. 3. denotes bleeding and 3 units transfused. 4. denotes bleeding and 4 units transfused 5. denotes bleeding and 5 units transfused. 6. denotes bleeding and 6 units transfused. 7. denotes bleeding and 7 units transfused. 8. denotes bleeding and 8 or more units of blood transfused. 9. denotes reoperation for reasons of bleeding. 10. denotes death imminently or directly caused by bleeding.
Reoperation for reasons of bleeding
Number of patients who return to the operating room for surgical management of suspected documented bleeding
Blood (red blood cells or whole blood) transfused
Number of units of blood transfused.
Sponsors and contacts
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Hamilton Health Sciences Corporation
Lead sponsor
Population Health Research Institute
Collaborator