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Dexmedetomidine as an Adjuvant to Greater Auricular Nerve Block in Middle Ear Surgeries
Sponsor: Minia University
Summary
This randomized, double-blind, controlled study will evaluate whether adding dexmedetomidine to bupivacaine in an ultrasound-guided greater auricular nerve block prolongs pain relief after middle ear surgery. Adults undergoing elective middle ear surgery under general anesthesia will receive the block before induction, either with bupivacaine alone or with bupivacaine plus dexmedetomidine. The main outcome is how long pain relief lasts after the block. Other outcomes include pain scores, opioid use, emergence agitation, hemodynamic changes, and side effects.
Official title: Efficacy of Dexmedetomidine as an Adjuvant to Ultrasound-Guided Greater Auricular Nerve Block for Middle Ear Surgeries: A Randomized Double-Blinded Controlled Study
Key Details
Gender
All
Age Range
18 Years - 70 Years
Study Type
INTERVENTIONAL
Enrollment
40
Start Date
2026-09-25
Completion Date
2027-05-30
Last Updated
2026-10-16
Healthy Volunteers
No
Conditions
Interventions
Bupivacaine
2 ml of bupivacaine 0.25% injected around the greater auricular nerve under ultrasound guidance before induction of general anesthesia.
Dexmedetomidine
1 ml of dexmedetomidine 0.5 µg/kg added to bupivacaine in the greater auricular nerve block.
Normal saline
1 ml of normal saline 0.9% added to 2 ml bupivacaine 0.25% in the greater auricular nerve block.
Ultrasound-guided greater auricular nerve block
Ultrasound-guided block of the greater auricular nerve performed before induction of general anesthesia in both groups.
Locations (1)
Minia university hospital
Minya, Egypt