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Can a simple switch in how acetaminophen is given prevent delirium after hip surgery?

NCT ID NCT05425355

Symptom relief Sponsor: University Health Network, Toronto Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 23, 2026 · Last updated Jul 24, 2026 · Updated 1 time

Summary

This trial compares intravenous (IV) acetaminophen to oral acetaminophen for managing pain and preventing delirium in adults aged 60 and older after hip fracture surgery. Participants receive either IV acetaminophen plus a placebo pill, or IV placebo plus oral acetaminophen, every 6 hours for 48 hours. The study aims to see if a larger trial is feasible and whether the IV route offers any advantage over the standard oral pill.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
acetaminophen (paracetamol) given intravenously or orally
What this could lead to
If IV acetaminophen proves better, it could reduce pain and delirium after hip fracture surgery in older adults, improving recovery.
What could go wrong
This is a small feasibility trial with only 42 participants, so results may not be conclusive. IV acetaminophen is already widely used, so the benefit over oral may be modest.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 4

Runs after approval, following long-term safety and how well the treatment works in everyday use.

Participants

About 42 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2023

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

60 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * 60 years of age and older * Patients who were ambulating without human assistance before fracture, with any type of non-neoplastic hip fracture * Patients undergoing surgical treatment as an inpatient Exclusion Criteria: * Patients with neoplastic hip fracture * Severe cognitive impairment (Montreal Cognitive Assessment (MoCA) \<10) * Pre-existing delirium * Known hypersensitivity or allergy to acetaminophen * Severe or chronic liver or kidney dysfunction * Planned postoperative ventilation * Swallowing issues and/or dysphagia * English language limitation * Weight \<50kg

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Conditions

The condition(s) this trial relates to.

hip fracture

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Hip fracture Surgery

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Toronto Western Hospital (UHN)

    RECRUITING

    Toronto, Ontario, M5T 2S8, Canada

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