Fig. 1

SPIRIT: Schedule of enrolment, intervention and assessments. THAL, Theatre admission lounge; PACU, Postoperative care unit; PMPS, patient-maintained propofol sedation; ACPS, anaesthetist-controlled propofol sedation)
SPIRIT: Schedule of enrolment, intervention and assessments. THAL, Theatre admission lounge; PACU, Postoperative care unit; PMPS, patient-maintained propofol sedation; ACPS, anaesthetist-controlled propofol sedation)