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Pain after nerve block may raise delirium risk in hip surgery patients

NCT ID NCT07295184

Knowledge-focused Sponsor: Konya City Hospital Source: ClinicalTrials.gov ↗

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Recruitment status, easiest to join first

Recruiting now This study
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By invitation only
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Running, but no longer taking on new participants.
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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 Results may not be published yet.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)

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Expanded access (paused)
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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
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Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study looks at whether rebound pain after a nerve block increases the risk of delirium (sudden confusion) in adults recovering from hip surgery in the ICU. Researchers will follow 90 patients aged 18-80 who are having elective hip surgery. The goal is to understand how pain control affects mental recovery after surgery.

What this could mean

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

What this could lead to
If successful, this study could help doctors better manage pain after hip surgery to reduce confusion and complications in the ICU.
What could go wrong
This is an observational study, not a treatment trial. It cannot prove cause and effect, and results may not apply to all patients or hospitals.

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.

Participants

About 90 people

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

Started

May 2026

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.

Who is studied

We conducted a pilot study on 20 patients using the 'goodness-of-fit tests: contingency tables' test with G Power software. In our study, the incidence of rebound pain was 40%, and postoperative delirium developed in 50% of patients with rebound pain, compared to 8.3% in patients without rebound pain. Based on these data, an effect size of 0.356 was found, and an analysis was conducted using α=0.05, 90% power. The sample size was calculated as 83 patients. Considering the dropout rate, a total of 90 patients (36 patients with rebound pain and 54 patients without rebound pain) were calculated to be included in the study.

Ages

18 to 80 years

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: * Patients aged 18-80 * ASA I-III risk groups * Undergoing elective hip surgery Exclusion Criteria: * Preoperative history of delirium, dementia, or major neurological disease * Present cognitive impairment or severe hearing or visual impairment that could affect pain assessment * Development of mechanical ventilation requirement in the intensive care unit; Need for bilateral hip surgery * Failure to provide meaningful analgesia after block application due to surgical pain outside the scope of the block * Patient's inability to complete the pain diary during postoperative follow-up; * Urgent hip surgery * Voluntary failure to give consent or request to withdraw from the study.

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As listed by the trial registrant

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

Rebound pain impact after hip surgery with nerve block

How to take part

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  1. The places running it

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  2. The official record

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    Open the record ↗

  3. A doctor treating you

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Contacts and locations

Locations

  • Konya City Hospital

    RECRUITING

    Konya, Karatay, 42100, Turkey (Türkiye)