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Combined Suprascapular and PECS I Blocks Versus Interscalene Block for Shoulder Arthroscopy
Sponsor: Cansu Ofluoğlu
Summary
Shoulder arthroscopy can cause moderate to severe pain after surgery. An interscalene block is commonly used to reduce this pain, but it may temporarily weaken movement of the diaphragm on the treated side. This study will compare an interscalene block with a combination of suprascapular nerve block and PECS I block in adults undergoing elective shoulder arthroscopy. The researchers want to determine whether the combined blocks provide pain relief that is not meaningfully worse than the interscalene block while causing less impairment of diaphragm movement. A total of 80 participants will be randomly assigned to one of two groups. All participants will receive general anesthesia. At the end of surgery, while participants are still under anesthesia, one group will receive the combined suprascapular nerve and PECS I blocks, and the other group will receive an interscalene block. Both groups will use the same intravenous patient-controlled pain pump containing tramadol after surgery. The main outcome will be the total amount of tramadol used during the first 24 hours after surgery. The study will also assess pain scores, diaphragm movement measured by ultrasound, quality of recovery, time until additional pain medicine is first needed, nausea and vomiting, anti-nausea medicine use, and block-related side effects during the first 24 hours.
Official title: Analgesic Efficacy and Hemidiaphragmatic Paresis With Combined Suprascapular Nerve Block and PECS I Block Versus Interscalene Block in Arthroscopic Shoulder Surgery: A Randomized Non-Inferiority Trial
Key Details
Gender
All
Age Range
18 Years - 75 Years
Study Type
INTERVENTIONAL
Enrollment
80
Start Date
2026-11-01
Completion Date
2027-05-01
Last Updated
2026-10-01
Healthy Volunteers
No
Interventions
suprascapular nerve block
At the end of surgery, while the participant is under general anesthesia, an ultrasound-guided suprascapular nerve block will be performed using 15 mL of 0.25% bupivacaine injected into the suprascapular fascial plane through a medial-to-coracoid approach. This intervention will be administered together with the PECS I block in the experimental arm.
PECS I Block
At the end of surgery, while the participant is under general anesthesia, an ultrasound-guided PECS I block will be performed using 10 mL of 0.25% bupivacaine injected into the fascial plane between the pectoralis major and pectoralis minor muscles. This intervention will be administered together with the suprascapular nerve block in the experimental arm.
Interscalene Brachial Plexus Block
At the end of surgery, while the participant is under general anesthesia, an ultrasound-guided interscalene brachial plexus block will be performed at the C5-C6 nerve root level using 15 mL of 0.5% bupivacaine injected between the anterior and middle scalene muscles.
Locations (1)
Fatih Sultan Mehmet Training and Research Hospital
Istanbul, Turkey (Türkiye)