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Clinical Trial Details — Status: Recruiting

Administrative data

NCT number NCT04928664
Other study ID # UW 20-247
Secondary ID
Status Recruiting
Phase Phase 4
First received
Last updated
Start date June 4, 2019
Est. completion date August 1, 2024

Study information

Verified date November 2023
Source The University of Hong Kong
Contact Timmy CW Chan, MBBS
Phone (852)90280302
Email timmychancw@gmail.com
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

Restricted range of shoulder motion following ORIF is a potential complication that severely affects the patients' functional outcome and should be actively avoided by means of adequate pain control in addition to early mobilization and physiotherapy. Peripheral nerve blocks, which can be given as a single injection or continuous infusion via an indwelling catheter, are analgesic options to be considered. Interscalene Block (ISB) is the regional analgesia of choice for the shoulder and proximal humerus region. While continuous infusion (aka continuous nerve block) offers the advantage of a longer duration of analgesia compared to a single injection of standard local anaesthetic, it is associated with an inherent risk of catheter displacement, dislodgement, obstruction, and infection. Compared to Standard Bupivacaine (SB), Liposomal Bupivacaine (LB) is a formulation designed to prolong the duration of action to up to 72 hours by slow release of bupivacaine from the multi-vesicular liposomes. Several studies have demonstrated satisfactory analgesic effects of liposomal bupivacaine given as local surgical site infiltration over placebo. However, the effects of single injection of liposomal bupivacaine given via local surgical site infiltration compared to continuous nerve block have been inconsistent. Administrating liposomal bupivacaine directly to peripheral nerve blocks is a potentially effective approach that has not been extensively studied. ISB with single shot liposomal bupivacaine has been shown to provide superior postoperative analgesia compared to ISB with injection of standard bupivacaine or placebo. ISB with liposomal bupivacaine could perhaps prolong and improve postoperative analgesia without the potential problems with continuous nerve blocks. The analgesic effect of ISB with single shot liposomal bupivacaine versus continuous ISB with standard bupivacaine has not been previously investigated. The aim of this study is to compare the analgesic effect of these two analgesic modalities for plate fixation of proximal humerus fractures.


Description:

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Study Design


Related Conditions & MeSH terms


Intervention

Drug:
Liposomal bupivacaine
Single shot injection of 10ml 1.33% LB; Due to the milky colour of LB, syringe containing the LB will be covered; Followed by placement of indwelling catheter in ISB; Catheter will be connected to a fixed-rate portable elastometric pump ( Easy pump, ®) upon arrival in the recovery room by the nurse; The pump will be filled with 300ml NS; The default fixed rate of infusion will be 5ml/hr; Both the pump and the clamp will be covered by an aluminium foil; Catheter and pump will be removed on post-operative day 2
Standard bupivacaine
Single shot injection of 10 ml 0.25% SB in ISB; In order to have blinding to the drug injected, syringe containing SB will be covered; followed by placement of indwelling catheter in ISB; Catheter will be connected to a fixed-rate portable elastometric pump ( Easy pump, ®) upon arrival in the recovery room by the nurse; The pump will be filled with 300ml 0.2% SB; The default fixed-rate of infusion will be 5ml/hr; Both the pump and the clamp will be covered by an aluminium foil; Catheter and pump will be removed on post-operative day 2

Locations

Country Name City State
Hong Kong Queen Mary Hospital Hong Kong
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 Changes in Numerical Rating Score (NRS) NRS (movement) = NRS during attempted passive forward flexion to 90 degrees NRS (rest) = NRS at rest
Pain at rest will be evaluated every 5 mins using NRS during recovery in PACU. NRS ranges from 0 to 10, where 0= no pain and 10= the worst imageable pain
Changes from baseline NRS at day 7
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