Study of Ultrasound-Guided Nerve Blocks for Pain and Diaphragm Movement After Arthroscopic Shoulder Surgery

What this Trial Is About

Researchers are evaluating the effects of different nerve blocks on diaphragmatic movement and pain relief after arthroscopic shoulder surgery. The study focuses on comparing anterior glenoid, suprascapular, and interscalene nerve blocks to understand their impact on postoperative pain and diaphragm function. Arthroscopic shoulder surgery often causes moderate to severe pain, especially within 48 hours post-operation, which can delay recovery. The suprascapular nerve provides about 70% of the sensory nerve fibers to the shoulder joint, making it a key target for pain control. Participants will receive general anesthesia along with one of four ultrasound-guided nerve block treatments. These include an interscalene brachial plexus block with 15 mL of 0.25% bupivacaine, a suprascapular nerve block with the same dosage, an anterior glenoid block with 15 mL of 0.25% bupivacaine, or a combination of suprascapular and anterior glenoid blocks totaling 30 mL of 0.25% bupivacaine split evenly between the two. Each treatment group is randomized and double-blinded. During the study, participants will be monitored for diaphragmatic paralysis 24 hours after surgery, which is the primary outcome. Secondary outcomes include the level of pain, total pain medication use, and patient satisfaction within the first 24 hours postoperatively. The study involves assessments to evaluate these measures following the nerve blocks and surgery. Overall, participation requires adherence to the study schedule and follow-up evaluations up to 24 hours after the procedure.

Ultrasound Guided Interscalene, Suprascapular and Anterior Glenoid Nerve Blocks on Diaphragmatic Excursion and Analgesia Following Arthroscopic Shoulder Surgery