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Delayed cold-stored vs. room temperature stored platelet transfusions in bleeding adult cardiac surgery patients—a randomized multicentre pilot study (PLTS-1)
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Delayed cold-stored vs. room temperature stored platelet transfusions in bleeding adult cardiac surgery patients—a randomized multicentre pilot study (PLTS-1)
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Delayed cold-stored vs. room temperature stored platelet transfusions in bleeding adult cardiac surgery patients—a randomized multicentre pilot study (PLTS-1)
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Journal Article
Delayed cold-stored vs. room temperature stored platelet transfusions in bleeding adult cardiac surgery patients—a randomized multicentre pilot study (PLTS-1)
2024
Overview
Background
Platelets stored at 1–6 °C are hypothesized to be more hemostatically active than standard room temperature platelets (RTP) stored at 20–24 °C. Recent studies suggest converting RTP to cold-stored platelets (Delayed Cold-Stored Platelets, DCSP) may be an important way of extending platelet lifespan and increasing platelet supply while also activating and priming platelets for the treatment of acute bleeding. However, there is little clinical trial data supporting the efficacy and safety of DCSP compared to standard RTP.
Methods
This protocol details the design of a multicentre, two-arm, parallel-group, randomized, active-control, blinded, internal pilot trial to be conducted at two cardiac surgery centers in Canada. The study will randomize 50 adult (≥ 18 years old) patients undergoing at least moderately complex cardiac surgery with cardiopulmonary bypass and requiring platelet transfusion to receive either RTP as per standard of care (control group) or DCSP (intervention group). Patients randomized to the intervention group will receive ABO-identical, buffy-coat, pathogen-reduced, platelets in platelet additive solution maintained at 22 °C for up to 4 days then placed at 4 °C for a minimum of 24 h, with expiration at 14 days after collection. The duration of the intervention is from the termination of cardiopulmonary bypass to 24 h after, with a maximum of two doses of DCSP. Thereafter, all patients will receive RTP. The aim of this pilot is to assess the feasibility of a future RCT comparing the hemostatic effectiveness of DCSP to RTP (defined as the total number of allogeneic blood products transfused within 24 h after CPB) as well as safety. Specifically, the feasibility objectives of this pilot study are to determine (1) recruitment of ≥ 15% eligible patients per center per month); (2) appropriate platelet product available for ≥ 90% of patients randomized to the cold-stored platelet group; (3) Adherence to randomization assignment (> 90% of patients administered assigned product).
Discussion
DCSP represents a promising logistical solution to address platelet supply shortages and a potentially more efficacious option for the management of active bleeding. No prospective clinical studies on this topic have been conducted. This proposed internal pilot study will assess the feasibility of a larger definitive study.
Trial registration
NCT 06147531 (clinicaltrials.gov).
Publisher
BioMed Central,BioMed Central Ltd,BMC
Subject
