Restricted versus liberal intraoperative benzodiazepine use in cardiac anaesthesia for reducing delirium (B-Free Pilot): a pilot, multicentre, randomised, cluster crossover trial

Jessica Spence, Emilie P. Belley‐Côté, Eric Jacobsohn, Shun Fu Lee, Richard Whitlock, Shrikant I. Bangdiwala, Summer Syed, Anisha Sarkaria, S. Macisaac, A. Lengyel, Steven Long, Kevin J. Um, William F. McIntyre, Morvarid Kavosh, Ian Fast, Rakesh C. Arora, André Lamy, Stuart J. Connolly, P.J. Devereaux