Clinical trial Recruiting at 1 site Interventional Ages 75 to 100

PENG Block added to spinal anesthesia for hip replacement in older adults

Official title: Effect of Pericapsular Nerve Group (PENG) Block Added to Spinal Anesthesia on Postoperative Delirium in Older Adults Undergoing Primary Total Hip Arthroplasty: A Prospective, Randomized, Assessor-Blinded Controlled Trial

Run by Poznan University of Medical Sciences · NCT07449468 · Data updated 2026-11-12

This study tests whether adding a PENG block to spinal anesthesia can lower delirium after hip replacement in people 75 and older.

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Quick facts

Study typeInterventional
Ages75 Years to 100 Years
SexAll
Enrollment180 (estimated)
SponsorPoznan University of Medical Sciences
Academic / other
Locations1 site (Poznan)
StatusRecruiting
StartedMarch 1, 2026
Main results expectedMay 1, 2027
Study endsJune 30, 2027
Registry record updatedMay 22, 2026
Trial IDNCT07449468 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Candidates are adults aged 75 or older scheduled for elective primary total hip arthroplasty under spinal anesthesia, with ASA II-III and ability to consent and complete delirium assessments.

Probably not a fit

Patients with pre-existing delirium, severe dementia, or contraindications to regional anesthesia may not benefit and could be excluded from the intervention.

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

What this trial studies

This randomized, parallel-group trial compares ultrasound-guided Pericapsular Nerve Group (PENG) block plus spinal anesthesia versus a sham block with local anesthetic to see if delirium within 72 hours after primary total hip arthroplasty is reduced in adults aged 75 and older. Participants are adults with ASA II-III undergoing elective surgery and will be assigned 1:1 to receive the PENG block or sham block. The study focuses on opioid-sparing analgesia and improved mobilization as potential mechanisms to decrease delirium risk. Outcomes include incidence of postoperative delirium and related recovery measures in the early postoperative period.

Why it matters

Potential benefit: If successful, the approach could reduce delirium and improve recovery after hip replacement by better pain control and lower opioid use.

How similar studies have gone: There is emerging but not conclusive evidence that regional blocks can reduce delirium by improving analgesia and reducing opioids, making this approach exploratory.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Age ≥ 75 years
* Scheduled for elective primary total hip arthroplasty
* Planned spinal anesthesia
* ASA physical status II-III
* Ability to provide written informed consent
* Ability to communicate and reliably assess pain using the Numeric Rating Scale (NRS)
* Expected postoperative hospitalization ≥ 72 hours

Exclusion Criteria:

* Pre-existing delirium, acute psychosis, or active major psychiatric disorder
* Documented severe dementia or inability to provide informed consent
* Severe hearing or visual impairment preventing reliable CAM assessment
* Contraindications to regional anesthesia (e.g., coagulopathy according to institutional standards, infection at the injection site, allergy to local anesthetics)
* Pre-existing neurological deficits of the operative lower limb are interfering with assessment
* Chronic opioid use (\>30 mg morphine milligram equivalents per day for \>2 weeks prior to surgery)
* Severe renal impairment (eGFR \<30 mL/min/1.73 m²)
* Severe hepatic insufficiency
* Participation in another interventional clinical trial within 30 days
* Any other condition that, in the investigator's judgment, may interfere with study participation or protocol adherence

Where it's running

  • Poznan University of Medical Sciences
    Poznan, Poland
    Recruiting

Study contacts

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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.