Safety and Analgesic Efficacy of a Modified Auriculotemporal Nerve Block

This study is testing the safety and pain-relieving effectiveness of a modified nerve block technique called the auriculotemporal nerve block during brain surgery. Patients undergoing craniotomy (opening of the skull) experience significant pain at the surgical incision site. This nerve block, using a local anesthetic called ropivacaine, is being evaluated as a way to reduce pain and the need for opioid pain medications after surgery. You may be eligible if: - You are between 18 and 65 years old - You are scheduled for a planned supratentorial craniotomy (brain surgery on the upper part of the skull) under general anesthesia - You are classified as ASA I or II You may NOT be eligible if: - Your surgery is an emergency - You are allergic to ropivacaine - You have taken analgesic medications before surgery - You have a skin infection at the injection site - You are addicted to alcohol or drugs - You have severe liver or kidney dysfunction or a coagulation disorder - You are pregnant or breastfeeding - You had neurosurgery within the last 6 months - You had a consciousness disorder before surgery Talk to your doctor to see if this trial is right for you.