Objectives: Upper air obstruction leads hypoxia, it is also known that S-100B levels increase by glial activations indicate cerebral hypoxic injury. This study aimed to evaluate the preoperative and postoperative S-100B levels in children with chronic adenotonsillar hypertrophy.

Patients And Methods: The study comprised 40 patients with indications for tonsillectomy and/or adenoidectomy following a diagnosis of chronic adenotonsillar hypertrophy and 40 age-gender matched control patients. Blood samples were taken from the patients preoperatively and at four weeks postoperatively. Preoperative and postoperative serum S-100B levels were analyzed.

Results: The serum S-100B levels in the preoperative period were found to be significantly higher compared to those of the control group (p < 0.05). The S-100B levels were significantly decreased in the postoperative period (p < 0.05).

Conclusions: The development of chronic adenotonsillar hypertrophy would play a role in increased S-100B levels. This indicates that neuronal damage would exists in patients with chronic adenotonsillar hypertrophy.

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