Effect of Interscalene Block Methods on Rebound Pain

Launched by ANKARA CITY HOSPITAL BILKENT · Mar 12, 2025

Keywords

ClinConnect Summary

This clinical trial is studying how different methods of providing anesthesia might affect a type of pain called "rebound pain" after shoulder surgery. Rebound pain is a sudden and intense pain that some patients experience right after the anesthesia wears off. The researchers want to see if using a specific technique to deliver local anesthesia—one that doesn’t directly inject into the nerve root—can help reduce this rebound pain in patients undergoing arthroscopic shoulder surgery.

To participate in this trial, you must be between 18 and 65 years old and be in good health (ASA physical status I or II). If you are planning to have shoulder surgery in a certain position and need an interscalene nerve block for anesthesia, you might be eligible. Participants will receive the anesthesia and will be monitored for any rebound pain using a simple pain scale. It’s important to note that there are some exclusions, such as certain health conditions and previous surgeries on the shoulder, so not everyone will qualify. If you join the study, you can help improve pain management for future patients undergoing similar procedures.

Gender

ALL

Eligibility criteria

• Inclusion Criteria:
• • Patients aged 18-65 years.
• • Patients with ASA physical status I or II.
• • Patients planned for arthroscopic shoulder surgery in the lateral decubitus position with interscalene nerve block.
• Exclusion Criteria:
• • Patients who do not consent to participate in the study.
• • Block failure.
• • Language acquisition deficiency.
• • Obesity (body mass index \> 35 kg/m²).
• • Diabetes.
• • Psychiatric disorders.
• • Central nervous system diseases.
• • Vestibular diseases.
• • Presence of neuropathy and paralysis.
• • Pregnancy.
• • Previous open shoulder surgery.
• • Allergy to local anesthetics.
• • Coagulopathy.
• • Severe thrombocytopenia.
• • Infection at the puncture site.
• • Pre-existing neuropathy in the limb to be operated.
• • Use of dexamethasone.
• • Use of opioid and antiemetic medications before surgery.
• • Severe cardiopulmonary disease.
• • Low baseline oxygen saturation.
• • Conditions that prevent cooperation in the postoperative period (e.g., mental retardation, delirium).