Comparison of First Attempt Success Based on Endotracheal Tube Type During Videolaryngoscope-guided Intubation Without Stylet

Patients are randomly assigned to either the oral RAE tube group (Group O) or the reinforced tube group (Group R). In both groups, tracheal intubation is performed using a videolaryngoscope without a stylet, and the first-attempt success rate is compared. Upon emergence from anesthesia and removal of the endotracheal tube, the degree of subglottic injury is assessed and compared between the groups. In addition, postoperative sore throat and hoarseness are evaluated and compared at 1 hour and 24 hours after surgery.

Inclusion Criteria: * Adults aged 19 years or older * Scheduled to undergo surgery under general anesthesia Exclusion Criteria: * Refusal to participate in the study * History of gastroesophageal reflux disease * Inadequate preoperative fasting * Congenital or acquired upper airway abnormalities (e.g., tumors, polyps, trauma, abscesses, inflammation, foreign bodies) * History of upper airway surgery * High risk of aspiration or bleeding tendency * Presence of severely loose teeth