Hewson DW, Worcester F, Sprinks J, Smith MD, et al. Patient-maintained versus anaesthetist-controlled propofol sedation during elective primary lower-limb arthroplasty performed under spinal anaesthesia: a randomised controlled trial. Br J Anaesth 2021 Nov 28. pii: S0007-0912(21)00651.
PMID: 34852928