Clinical trial Recruiting at 1 site Phase 4 Interventional Ages 60 and up

Acetaminophen-Mannitol Injection to See If It Reduces Postoperative Delirium

Official title: Effect of Analgesia With Acetaminophen-Mannitol Injection on Postoperative Delirium in Older Patients Undergoing Non-cardiac Surgery: Protocol for an Open-label Randomized Controlled Trial

Run by Xiangya Hospital of Central South University · NCT07235995 · Data updated 2026-11-12

This study tests whether giving intravenous acetaminophen with mannitol to older adults after noncardiac surgery in the ICU can lower the chances of delirium compared with the usual sufentanil-based pain relief.

Quick facts

PhasePhase 4
Study typeInterventional
Ages60 Years and up
SexAll
Enrollment1092 (estimated)
SponsorXiangya Hospital of Central South University
Academic / other
Locations1 site (Changsha, Hunan)
StatusRecruiting
StartedFebruary 2, 2026
Main results expectedJanuary 31, 2027
Study endsApril 30, 2027
Registry record updatedOctober 29, 2026
Trial IDNCT07235995 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Older adults (60+) admitted to the ICU after noncardiac surgery, able to provide informed consent.

Probably not a fit

Patients with preexisting conditions or intra/postoperative complications that preclude randomization or affect delirium risk may not benefit.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This multicenter randomized trial in 34 ICUs in China compares an intravenous acetaminophen-mannitol opioid-sparing analgesic strategy to an intravenous sufentanil-based analgesic approach in adults aged 60 and over after noncardiac surgery. The primary goal is to measure the cumulative incidence of postoperative delirium during ICU stay. Outcomes focus on delirium risk, pain control, and related clinical factors in an elderly surgical population. The study seeks to determine whether an acetaminophen-based strategy can reduce delirium while maintaining effective analgesia. Enrollment targets 1,092 participants to assess potential benefits across diverse centers.

Why it matters

Potential benefit: If successful, patients could experience fewer delirium episodes and shorter ICU stays due to a gentler analgesic approach.

How similar studies have gone: Previous research has explored analgesic strategies and delirium risk, with mixed results; this trial tests a novel combination with mannitol.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 60 years;
* Admitted to ICU after a noncardiac surgical procedure
* Signed informed consent form

Exclusion Criteria:

Patients who meet any of the following criteria will be excluded.

* Preoperative medical history: schizophrenia, epilepsy, Parkinson's disease, end stage renal disease, or end stage liver disease.
* Inability to communicate preoperatively due to coma, severe dementia, or language disorder.
* Patients with traumatic brain injury or undergoing neurosurgical procedures.
* Positive screening result for drugs of abuse (amphetamines, barbiturates, benzodiazepines, cannabinoids, cocaine, methamphetamine, methadone, or methylenedioxymethamphetamine).
* Participation in another clinical study within 30 days prior to surgery, or planned concurrent participation in another clinical study.
* Positive preoperative CAM-ICU assessment indicating delirium.
* Occurrence of intraoperative or postoperative complications before randomization, and the investigator deems the subject unsuitable for study participation.
* Hepatic dysfunction at screening, defined as ALT or AST \>3× the local laboratory upper limit of normal (ULN).
* Intolerance or contraindication to acetaminophen or the protocol analgesics.

Where it's running

  • Xiangya hospital
    Changsha, Hunan, China
    Recruiting

Study contacts

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.