Comparing shoulder nerve blocks to see effects on diaphragm movement and pain after arthroscopic shoulder surgery
Official title: The Effect of Ultrasound Guided Interscalene, Suprascapular and Anterior Glenoid Nerve Blocks on Diaphragmatic Excursion and Analgesia Following Arthroscopic Shoulder Surgery: A Prospective Randomized Controlled Study
Run by Tanta University · NCT07090733 · Data updated 2026-11-12
We will see if three types of ultrasound-guided nerve blocks (interscalene, suprascapular, and anterior glenoid) reduce pain and change diaphragmatic movement in adults having elective arthroscopic shoulder surgery.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 21 Years to 65 Years |
| Sex | All |
| Enrollment | 80 (estimated) |
| Sponsor | Tanta University Academic / other |
| Locations | 1 site (Tanta, El-Gharbia) |
| Status | Recruiting |
| Started | January 1, 2025 |
| Main results expected | December 31, 2025 |
| Study ends | December 31, 2025 |
| Registry record updated | July 29, 2025 |
| Trial ID | NCT07090733 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 21–65 with ASA physical status I–II scheduled for elective arthroscopic shoulder surgery who do not have COPD, pregnancy, BMI > 40, chronic opioid use, coagulation disorders, or local infection at the injection site.
✕Probably not a fit
Patients with COPD, morbid obesity (BMI > 40), chronic opioid use, coagulation disorders, local infection at the injection site, or allergy to local anesthetics are excluded and unlikely to benefit from participation.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
Adults scheduled for elective arthroscopic shoulder surgery will receive one of four ultrasound-guided regional anesthesia approaches (interscalene brachial plexus block, suprascapular nerve block, anterior glenoid block, or suprascapular plus anterior glenoid block). Diaphragmatic excursion will be measured along with postoperative analgesia outcomes to compare respiratory impact and pain control across groups. Participants are generally healthy adults (ASA I–II) aged 21–65 without COPD, severe obesity, or contraindications to local anesthetics. The trial is conducted at Tanta University with standardized block techniques and postoperative assessments.
Why it matters
Potential benefit: If successful, the findings could identify nerve block approaches that provide good pain relief with less impairment of diaphragmatic movement after shoulder arthroscopy.
How similar studies have gone: Previous studies show interscalene blocks give excellent shoulder analgesia but commonly reduce diaphragmatic function, suprascapular blocks provide substantial pain relief with less diaphragmatic effect, and the anterior glenoid block is less well-studied so this head-to-head comparison includes partly novel elements.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Age from 21 to 65 years. * Both sexes. * American Society of Anesthesiologists (ASA) physical status I or II. * Scheduled for arthroscopic shoulder surgery. Exclusion Criteria: * Patient's refusal to participate. * Patients with a history of allergy to local anesthetics. * Patients with a history of chronic use of painkillers. * Patients presented with mental dysfunction. * Patients with coagulation disorders. * Patients presented with skin or soft tissue infection at the proposed site of needle Insertion. * Pregnant Patients. * Patients with Chronic Obstructive Pulmonary Disease (COPD) or a Body Mass Index (BMI) of more than 40.
Where it's running
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Tanta University
Tanta, El-Gharbia, Egypt Recruiting
Study contacts
- Study coordinator: Fatma E Elsamahy, Master
- Email: Drfatmaelsamahy@gmail.com
- Phone: 00201094082899
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How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.