Single blind feasibility trial using a binary 'traffic light' design to evaluate the feasibility of injecting normal physiological saline into the atria of patients at the time of clinically indicated open chest cardiac surgery.
In this project, The investigators will see if patients can undergo successful transepicardial injection of saline at the time of cardiac surgery as compared to no injection. Patients will be randomised in a 1:1 allocation ratio using a parallel two-arm design. The study is designed to meet the following 3 feasibility objectives before proceeding: reasonable recruitment uptake, successful transepicardial injection of saline into the atria, and adequate retention of patients at follow-up.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Once the patient is placed on cardiopulmonary bypass, the product will be injected into the left atrial wall using a 27 gauge needle as 4 injections of 200 μL each. Two will be placed in the atrial appendage. The remaining 2 injections will be placed equidistant on the anterior atrial free wall. Each injection will be performed just under the surface of the atrial epicardium over 30 seconds. The needle will stay in place for 10 seconds after the injection to limit back flow from the site of injection.
University of Ottawa Heart Insitute
Ottawa, Ontario, Canada
Recruitment uptake
Recruitment uptake \<20% (project not feasible), 20-35% (protocol needs to be revised), and \> 35% (project feasible).
Time frame: 1 year
Treatment fidelity
Treatment successfully applied \< 50% (approach not feasible), 50-75% (approach needs to be revised) and \> 75% (approach is feasible).
Time frame: 1 year
Participant retention (follow up)
Follow up: \< 65% (project not feasible), 65-85% (follow-up needs to be revised), \> 85% (project is feasible).
Time frame: 30 days post surgery
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