PENG block: continuous infusion versus programmed intermittent bolus for hip fracture pain

A Double Blind Randomised Controlled Trial Comparing Continuous Infusion vs. Programmed Intermittent Bolus Via a Pericapsular Nerve Group (PENG) Catheter for Post Operative Fractured Neck of Femur Analgesia

Not applicable Interventional University College Cork · NCT07046052

This will see if giving levobupivacaine through a PENG block as a continuous infusion or as timed intermittent boluses provides better pain relief for adults after neck of femur (hip) fracture surgery.

Quick facts

PhaseNot applicable
Study typeInterventional
Enrollment150 (estimated)
Ages18 Years and up
SexAll
SponsorUniversity College Cork Academic / other
Locations1 site (Cork, Cork)
Trial IDNCT07046052 on ClinicalTrials.gov

What this trial studies

Pericapsular Nerve Group (PENG) block is a regional analgesia technique used to control pain after neck of femur fracture. In this interventional protocol patients undergoing hemiarthroplasty receive a PENG block with an indwelling catheter and are assigned to either continuous infusion or programmed intermittent bolus delivery of levobupivacaine. Analgesic effectiveness, opioid consumption, delirium incidence, and adverse events are recorded in the postoperative period to compare the two dosing strategies. The trial is conducted at Cork University Hospital and enrolls adult patients able to provide written consent.

Who should consider this trial

Good fit: Adults (18+) having hemiarthroplasty for a fractured neck of femur who can give written consent, speak English, and have no contraindications to peripheral nerve blocks are the ideal candidates.

Not a fit: Patients with contraindications to peripheral nerve block (local infection, allergy to local anaesthetic, coagulopathy), those under 50 kg, pregnant women, vulnerable adults under guardianship, or people with chronic pain and long-term opioid use may not gain benefit from this intervention.

Why it matters

Potential benefit: If successful, one dosing strategy could provide better or longer-lasting pain relief after hip fracture surgery and reduce opioid use and related complications.

How similar studies have performed: PENG blocks have been shown to provide effective analgesia after hip fracture, but direct comparisons between continuous infusion and programmed intermittent bolus dosing have not been clearly established.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* English-speaking
* over the age of 18 years
* hemiarthroplasty for fractured neck of femur
* able to provide written consent.

Exclusion Criteria:

* under 50kg body weight.
* unable to provide consent due to incapacity
* pregnant women
* vulnerable adults under state guardianship
* Patients with pre-existing chronic pain disorders or with a history of long-term opioid use
* those with contraindications to a peripheral nerve block such as local site infection, allergy to local anaesthetic or those who are coagulopathic

Where this trial is running

Cork, Cork

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Hip FractureAnalgesia Post Fracturehip fractureregional anaesthesiaanalgesiapeng blockcontinuous infusionprogrammed intermittent bolus
Last reviewed 2026-06-13 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.