Efficacy and Safety of Postoperative Autologous Blood Transfusion in Cardiac Surgery (RESCUE): Rationale, Design, and Study Protocol of a Multicenter Randomized Controlled Trial
Abstract
BACKGROUND
Postoperative bleeding is a major concern in cardiac surgery, often leading to significant transfusion requirements. Despite this high transfusion demand, the use of postoperative autologous blood transfusion (PABT) remains underexplored.
METHODS AND RESULTS
This large-scale, single-blind randomized controlled trial with a 30-day follow-up enrolls patients undergoing elective on- or off-pump coronary artery bypass grafting. Patients with shed mediastinal blood volumes over 500 mL within the first 6 hours postoperatively are randomly assigned 1:1 to either the PABT group or the standard care group. The PABT group receives postoperative autotransfusion and additional allogeneic RBC transfusions if needed, while the standard care group receives allogeneic RBC transfusions only when clinically necessary, without postoperative autotransfusion. The primary efficacy endpoint is the postoperative allogeneic RBC transfusion volume, defined as the cumulative amount transfused from the day of surgery to discharge. Secondary efficacy endpoints include postoperative allogeneic RBC and non-RBC transfusion rates, perioperative hematologic recovery, drainage volume, mechanical ventilation duration, ICU and hospital length of stay. The primary safety endpoint is the incidence of a composite of postoperative infections (pneumonia, bloodstream infections, and surgical site infections). Secondary safety endpoints include a composite of other postoperative complications (renal…
How strong is the evidence?
Evidence Hub reads this as a randomized trial, done in people. Its evidence level is 2 of 5 (High · randomized trial). Randomized trials of a reasonable size are the strongest single-study design. Reported size: 1,232 participants or records.
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