Table 1

Schedule of study events

Before SurgeryPostoperative day 0Postoperative day 1Postoperative day 2Postoperative day 3Postoperative day 4Postoperative day 5
Questionnaires
Montreal Cognitive AssessmentX
Athens Insomnia ScaleX
Insomnia Severity Risk IndexX
Epworth Sleepiness ScaleX
Delirium AssessmentXX*X*†X*†X*†X*†X*†
Modified Richards-Campbell Sleep QualityX*X*X*X*X*
Medications
Suvorexant versus placeboX*X*X*
Procedures
Nightly EEGX*X*X*
Wrist actigraphyX‡
Psychomotor vigilance taskXX*X*X*
PupillometryXX*X*X*X*

  • *These activities will not be performed after hospital discharge.

  • †Performed two times per day.

  • ‡Activity is optional, must be worn for at least 3 days prior to surgery.

  • EEG, electroencephalography.