MInimizing Delirium With Nasal Dexmedetomidine-InducEd Sleep (MIDDIES)
400 participantsStarted 2026-05-01
Plain-language summary
This study aims to determine whether, compared with placebo, the nighttime self-administration of a nasal dexmedetomidine is effective at inducing sleep and preventing postoperative delirium in high-risk patients.
Who can participate
Age range
65 Years – 90 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Aged 65-90 years
* Scheduled for a major abdominal surgery with estimated surgery time ≥ 2 hours
Exclusion Criteria:
* Blind, deafness or the inability to speak mandarin
* Allergy to dexmedetomidine.
* Renal and liver failure requiring dialysis or Child-Pugh score \> 5
* Follow-up difficulties (i.e. active substance abuse, psychotic disorder, homelessness)
* Previous major abdominal or cardiac surgery within 1 year of surgical procedure
* Chronic therapy with benzodiazepines and/or antipsychotics. Severe deficit due to structural or anoxic brain damage
* Body weight \< 35 kg
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Incidence of postoperative delirium
Timeframe: Up to postoperative day (POD) 7 or discharge (whichever first).
Trial details
NCT IDNCT07538284
SponsorSixth Affiliated Hospital, Sun Yat-sen University