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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT06235606
Other study ID # UW24-024
Secondary ID
Status Recruiting
Phase Phase 3
First received
Last updated
Start date May 8, 2024
Est. completion date July 31, 2026

Study information

Verified date May 2024
Source The University of Hong Kong
Contact Stanley SC Wong, MD
Phone 22553303
Email wongstan@hku.hk
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Brachial plexus blocks (BPB) are commonly used to provide regional anaesthesia for patients undergoing distal radial fracture surgery. Distal radial (DR) fracture surgery is a commonly performed orthopaedic surgery and is usually associated with moderate postoperative pain. Poor postoperative pain control can impair rehabilitation, delay recovery and negatively impact outcomes after surgery. Liposomal bupivacaine (EXPAREL) is a multivesicular formulation of bupivacaine that allows rapid absorption and prolonged release of bupivacaine. Liposomal bupivacaine may provide prolonged analgesia for up to 72 hours after single injection and may therefore achieve greater analgesic efficacy compared to non-liposomal long-acting local anaesthetics. The addition of additive drugs such as dexmedetomidine to regional nerve blocks can also extend analgesia and improve postoperative pain. However, the effect of adding liposomal bupivacaine versus adding dexmedetomidine in regional nerve blocks is not known. In this project, the investigators propose to conduct a randomized controlled trial to investigate the effect of adding liposomal bupivacaine versus dexmedetomidine in the supraclavicular BPB for acute postoperative analgesia. The investigators will also assess longer term secondary outcomes including upper limb functional scores, chronic pain, and health related quality of life.


Recruitment information / eligibility

Status Recruiting
Enrollment 96
Est. completion date July 31, 2026
Est. primary completion date January 31, 2026
Accepts healthy volunteers No
Gender All
Age group 18 Years to 90 Years
Eligibility Inclusion criteria - American Society of Anesthesiologist (ASA) status I-III - Age 18-90 years old - Scheduled for distal radial fracture fixation (Open reduction and internal fixation with volar approaching locking plate) - Patients with informed consent to participate in the study Exclusion criteria - Revision surgery - Previous fractures or surgery in the affected distal radius - Surgery involving more than the affected arm - Higher energy and high-grade fracture cases - road traffic accident, fall from height, open fractures, combined distal radius and distal ulna fractures, fractures requiring external fixation, fractures with severe articular comminution or severe metaphyseal extension, comminuted fractures requiring more than a single volar approach incision and a single volar locking plate implant - Cases with painful conditions affecting the upper limb prior to surgery such as cervical spine, shoulder, elbow, other hand and wrist problems - Cases with baseline (pre-injury) QuickDASH score worse than 10 out of 100 - Respiratory compromise (requires long term oxygen) - History of seizures - Pre-existing neurological disorder/deficit - Chronic opioid user (3 months or more) - Presence of chronic pain condition (pain duration over 3 months) - Alcohol or substance abuse - Psychiatric illness - Impaired mental state - Local infection - Allergy to analgesic drugs: local anaesthetic drugs, paracetamol, non-steroidal anti-inflammatory drugs (NSAIDs), opioids - Impaired renal function (defined as effective glomerular filtration rate <30ml/min/1.73m2 - Impaired liver function (defined as plasma bilirubin over 34µmol/L; international normalized ratio [INR] =1.7, alanine aminotransferase [ALT] over 100U/L, aspartate aminotransferase [AST] over 100U/L) - Coagulopathy (platelet count <100,000/ml and/or INR =1.5) or the use of anticoagulants (not including aspirin) that precludes the use of supraclavicular BPB - Pregnancy - Patient refusal for regional nerve blocks - Patient refusal to join the clinical trial - Patient unable/unwilling to attend post-op rehabilitation programme

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Bupivacaine Liposome 13.3 Milligrams/Milliliter [Exparel]
Bupivacaine liposome is a multivesicular formulation of bupivacaine that allows rapid absorption and prolonged release of bupivacaine.
Dexmedetomidine 0.5milligram (50micrograms)
Dexmedetomidine is a full a2 adrenergic receptor agonist roughly eight times more selective for the a2 receptor than clonidine.

Locations

Country Name City State
Hong Kong The University of Hong Kong Hong Kong

Sponsors (1)

Lead Sponsor Collaborator
The University of Hong Kong

Country where clinical trial is conducted

Hong Kong, 

Outcome

Type Measure Description Time frame Safety issue
Primary Weighted area under curve (AUC) pain score at rest Pain severity would be rated at rest after surgery using numerical rating scale (NRS) with 0 to 10 where 0=no pain and 10=the worst possible pain 0-48 hours after surgery
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