Objective and Perceptual Characteristics of the Voice After Endotracheal Intubation in Head and Neck Surgery

Exclusion Criteria

• •\<18 years in the time of surgery
• •history of previous head and neck operation or radiotherapy
• •patients scheduled for head and neck operation that can alter acoustic characteristics of the voice (surgery of the nasal cavity, ear surgery, laryngeal surgery, jaw surgery).
• •Patients with preoperatively diagnosed pathologic vocal cord findings (nodules, polyps, vocal cord paralysis),
• •patients with postoperative injuries of the vocal cords, recurrent and superior laryngeal nerve,
• •patients with laryngopharyngeal reflux,
• •patients in whom postoperative evaluation of the voice cannot be performed due to uncooperativeness will also be excluded from the study.