Comparing four ultrasound-guided shoulder nerve block techniques for breathing, pain, and opioid use after arthroscopic shoulder surgery
Official title: Comparion of the Effects of Ultrasound-guided Interscalene Block, Erector Spinae Plane Block, Costoclavicular Block, and Supraclavicular Block on Hemidiaphragm Paralysis, Postoperative Recovery Quality, Opioid Consumption, and Pain Scores in Patients Undergoing Arthroscopic Shoulder Surgery: a Prospective Observational Trial
Run by Antalya Training and Research Hospital · NCT07553611 · Data updated 2026-11-12
The team will try four ultrasound-guided nerve blocks to see which best reduces breathing problems, pain, and opioid use for adults having elective arthroscopic shoulder surgery.
Quick facts
| Study type | Observational |
|---|---|
| Ages | 18 Years to 65 Years |
| Sex | All |
| Enrollment | 88 (estimated) |
| Sponsor | Antalya Training and Research Hospital Government |
| Locations | 1 site (Antalya, Muratpaşa) |
| Status | Recruiting |
| Started | April 21, 2026 |
| Main results expected | October 21, 2026 |
| Study ends | November 21, 2026 |
| Registry record updated | May 11, 2026 |
| Trial ID | NCT07553611 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Adults aged 18–65 with ASA I–III, BMI under 30, scheduled for elective arthroscopic shoulder surgery and able to give informed consent are ideal candidates.
✕Probably not a fit
Patients with BMI ≥30, ASA ≥4, severe or moderate pulmonary disease, abnormal preoperative chest X-ray, contraindications to regional blocks, or those having emergency surgery are unlikely to benefit from this protocol.
A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.
What this trial studies
This single-center observational study groups adults undergoing elective arthroscopic shoulder surgery by the type of ultrasound-guided block they receive: interscalene, erector spinae plane, costoclavicular, or supraclavicular. Investigators will record rates of hemidiaphragmatic paralysis, postoperative recovery quality, opioid consumption, and pain scores. Eligible participants are 18–65 years old with ASA I–III and BMI <30 kg/m2, and patients with significant pulmonary disease or abnormal chest X-ray are excluded. Data will be collected at Antalya Training and Research Hospital to compare clinical outcomes across the four block techniques.
Why it matters
Potential benefit: If successful, the findings could identify block techniques that maintain good pain control while lowering diaphragm paralysis and opioid needs after shoulder arthroscopy.
How similar studies have gone: Previous research shows interscalene blocks give strong shoulder analgesia but commonly cause hemidiaphragmatic paralysis, and some smaller studies suggest alternative blocks may reduce diaphragm involvement while preserving analgesia, though comparative data remain limited.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * aged 18-65 years * American Society of Anaesthesiology (ASA) score I-III * body mass index (BMI) \<30kg/m2 * scheduled for elective arthroscopic surgery Exclusion Criteria: * ASA score ≥4 * BMI ≥30 kg/m2 * declining to give written informed consent * controendications for block application * history of mental or neurological disease, severe liver and/or kidney disease * history of moderate or severe pulmonary disease * abnormal preoperative chest X-ray findings * scheduled for emergency surgery
Where it's running
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University of Health Sciences, Antalya Training and Research Hospital
Antalya, Muratpaşa, Turkey (Türkiye) Recruiting
Study contacts
- Principal investigator: Arzu Karaveli — University of Health Sciences, Antalya Training and Research Hospital
- Study coordinator: Arzu Karaveli
- Email: arzukaraveli@hotmail.com
- Phone: +905325611300
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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.