Usefulness of Adenotonsillar Size for Prediction of Severity of Obstructive Sleep Apnea and Flow Limitation

Objective Adenotonsillar hypertrophy is considered the most common cause of pediatric obstructive sleep apnea syndrome (OSAS). This study aimed to evaluate the relationships between tonsil/adenoid size, parameters of polysomnography, and subjective sleep symptoms. Study Design Case-control studies. Setting Tertiary care center. Subjects and Methods A 4-point tonsil grading method and adenoid-nasopharynx (AN) ratio were used to categorize tonsil and adenoid size, respectively. Sleep questionnaires (Korean version of the Obstructive Sleep Apnea–18 [KOSA-18]) and full-attended polysomnography were performed. Results The subjects (n = 70) were divided into a control group (n = 31, apnea-hypopnea index [AHI]