• BMJ · Jan 2009

    Randomized Controlled Trial Multicenter Study

    Effect of "collaborative requesting" on consent rate for organ donation: randomised controlled trial (ACRE trial).

    • ACRE Trial Collaborators.
    • BMJ. 2009 Jan 1;339:b3911.

    ObjectiveTo determine whether collaborative requesting increases consent for organ donation from the relatives of patients declared dead by criteria for brain stem death.DesignUnblinded multicentre randomised controlled trial using a sequential design. Centralised 24 hour telephone randomisation based on randomised permuted blocks of 10.Setting79 general, neuroscience, and paediatric intensive care units in the United Kingdom.Participants201 relatives of patients meeting criteria for brain stem death. Relatives were blind to the intervention and to the trial; all other participants were necessarily unblinded.InterventionsCollaborative requesting for consent for organ donation by the potential donor's clinician and a donor transplant coordinator (organ procurement officer) compared with routine requesting by the clinical team alone.Main Outcome MeasureProportion of relatives consenting to organ donation.Results101 relatives were randomised to routine requesting and 100 to collaborative requesting. All were analysed on an intention to treat basis. In the routine requesting group, 62 relatives consented to organ donation. In the collaborative requesting group, 57 relatives consented. After correction for the ethnicity, age, and sex of the potential donors the risk adjusted ratio of the odds of consent in the collaborative requesting group relative to the routine group was 0.80 (95% confidence interval 0.43 to 1.53), with a P value of 0.49 adjusted for interim analysis and trial over-running. The conversion rate (donors with consent from whom any organs were retrieved) was 92% (57/62) in the routine requesting group and 79% (45/57) in the collaborative requesting group (P=0.043). There were 140 approaches to relatives in the per protocol analysis, leading to 60.3% (44/73) consent after routine and 67.2% (45/67) after collaborative requesting (risk adjusted odds ratio of consent 1.47, 0.67 to 3.20, P=0.33).ConclusionThere is no increase in consent rates for organ donation when collaborative requesting is used in place of routine requesting by the patient's clinician.Trial RegistrationISRCTN01169903.

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