The Effect of Local Anesthetic Techniques on Hemodynamic Response and Postoperative Sore Throat in Double-Lumen Tubes

This clinical trial aims to determine if different local anesthetic application techniques can reduce postoperative sore throat (POST) and manage hemodynamic responses in adult patients undergoing elective thoracic surgery with double-lumen intubation. The main questions it aims to answer are: * Does inhaled lidocaine or lidocaine applied to the double-lumen tube reduce the incidence and severity of POST? * How do these anesthetic techniques impact hemodynamic stability during surgery? Researchers will compare three groups-those receiving inhaled lidocaine, lidocaine applied to the tube, and a saline control group-to see if these methods differ in effectiveness. Participants will: * Undergo standard preoperative assessment and provide informed consent * Be randomly assigned to receive either inhaled lidocaine, lidocaine applied to the tube, or saline * Have sore throat scores and hemodynamic data recorded at specific intervals after surgery