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Clinical Trial Summary

Supraclavicular brachial plexus block (SCBPB) is the common approach to provide surgical anesthesia of upper limb. The effects of single-injection brachial plexus nerve blocks recede after several hours unmasking the moderate to- severe pain of the surgical insult.

Clinical Trial Description

Strategies to prolong brachial plexus nerve blocks analgesia beyond the pharmacological duration of the local anaesthetic used include placement of indwelling perineural catheters to allow prolonged infusion or the co-administration of adjuvants such as epinephrine, a2 agonists (i.e. clonidine and dexmedetomidine), midazolam, or the corticosteroid dexamethasone. The investigators will use calcium channel blocker as adjuvant to bupivacaine in supraclavicular block. Calcium plays an important role in analgesia produced by local anesthetics. The activation of N-methyl-D-aspartate receptors may lead to calcium entry into cells and potentiation of spinal cord and plays a role in pain formation. Hence, calcium channel blockers may prevent central sensitization and provide better sensory motor block characteristics. Verapamil, a calcium channel blocker can potentiate analgesic action of local anesthetics and reduce postoperative pain and analgesic consumption. Few studies were there using 2.5 mg of verapamil, showing no effect on onset and duration of sensory motor block. Hence, the investigators have used 5 mg of verapamil as adjuvant to bupivacaine. The primary aim of the study was to know whether verapamil (5 mg) as adjuvant to bupivacaine in supraclavicular brachial plexus block would delay the need of rescue analgesia. ;

Study Design

Related Conditions & MeSH terms

NCT number NCT05183997
Study type Interventional
Source Assiut University
Contact Essam Sharkawy, MD
Phone 00201223497642
Email [email protected]
Status Not yet recruiting
Phase N/A
Start date January 2022
Completion date February 2023

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