Actively Recruiting
Analgesic Efficacy and Respiratory Effects of Interscalene, Anterior Suprascapular, and Pericapsular Nerve Group Blocks in Shoulder Arthroscopy
Led by Atatürk Chest Diseases and Chest Surgery Training and Research Hospital · Updated on 2026-02-24
120
Participants Needed
1
Research Sites
2 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Researchers are evaluating alternative regional anesthesia techniques for pain control after arthroscopic shoulder surgery. This study aims to compare the commonly used interscalene block, which can cause diaphragmatic dysfunction due to phrenic nerve blockade, with other methods like the anterior suprascapular block and the pericapsular nerve group (PENG) block. The goal is to find an optimal pain management approach that preserves respiratory function. The study involves three groups receiving different nerve block procedures guided by ultrasound before surgery while patients lie in the supine position. One group receives the interscalene block with 10 mL of 0.25% bupivacaine injected between C5 and C6 nerves. Another group receives the anterior suprascapular block with 10 mL of local anesthetic around the suprascapular nerve. The third group undergoes the PENG block with 20 mL of anesthetic injected near the shoulder joint capsule. Participants will be monitored for pain levels within the first hour and 24 hours after surgery using pain scores. Respiratory function will be assessed during the perioperative period by measuring forced vital capacity (FVC), forced expiratory volume in 1 second (FEV1), and the FEV1/FVC ratio. This randomized, single-blind study will help determine which block provides effective pain relief with fewer respiratory side effects, with participation lasting through the surgery and immediate recovery.
CONDITIONS
Brief Title
Comparative Analgesia and Respiratory Effects of Shoulder Blocks
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Patients with ASA scores I-II-III
- Patients scheduled for elective arthroscopic shoulder surgery
- Patients who have been informed about the study and have given written consent
You will not qualify if you...
- Known allergy to local anesthetics
- Infection at the application site
- Severe coagulopathy disorder or anticoagulant use
- Contralateral phrenic nerve palsy or serious pulmonary diagnosis
- History of chronic opioid use or neuropathic pain
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Day of surgery
Participants receive one of three types of nerve blocks under ultrasound guidance before shoulder arthroscopy surgery to manage pain and assess respiratory effects.
1 visit (in-person, preoperative)
Duration - 24 hours after surgery
Participants are monitored for pain scores and respiratory function during the first 24 hours after surgery.
Assessments during hospital stay
Trial Site Locations
Total: 1 location
1
Ankara Etlik City Hospital
Yenimahalle, Ankara, Turkey (Türkiye), 06170
Actively Recruiting
How is the study designed?
Study Type
INTERVENTIONAL
Masking
SINGLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
3
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