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Drug-induced sedation endoscopy in children <2 years with obstructive sleep apnea syndrome: upper airway findings and treatment outcomes

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Abstract

Few data are available about the pattern of upper airway (UA) obstruction in children <2 years with obstructive sleep apnea syndrome (OSAS). Also, the role of adenoidectomy versus adenotonsillectomy (AT) is poorly defined in this age group. We performed drug-induced sedation endoscopy (DISE) in young OSAS children to investigate the pattern of UA obstruction and the value of DISE in therapeutic decision making. Retrospective analysis of ≤2-year-old children undergoing DISE-directed UA surgery. OSAS severity and the treatment outcomes were documented by polysomnography. Data are available for 28 patients, age 1.5 years (1.3–1.8), BMI-z score 0.5 (−0.7 to 1.3) with severe OSAS, obstructive apnea/hypopnea index (oAHI) 13.8/hr (7.5–28.3). All but 3 had (>50%) obstruction at the level of the adenoids, and all but 5 had (>50%) tonsillar obstruction. DISE-directed treatment consisted of adenoidectomy (n = 4), tonsillectomy (n = 1), and AT (n = 23). There was a significant improvement in respiratory parameters. Twenty children (71.4%) had a postoperative oAHI <2/hr. None had palatal or tongue base obstruction. Five children had a circumferential UA narrowing (hypotonia), 2 of them had residual OSAS. DISE showed a collapse of the epiglottis in 6 and late-onset laryngomalacia in 4. These findings did not affect surgical outcome. Adenotonsillar hypertrophy is the major cause of UA obstruction, and DISE-directed UA surgery was curative in 71,4% of children ≤2 years. We suggest that DISE may be helpful in surgical decision making. Circumferential UA narrowing may result in less favorable surgical outcomes.

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Boudewyns, A., Van de Heyning, P. & Verhulst, S. Drug-induced sedation endoscopy in children <2 years with obstructive sleep apnea syndrome: upper airway findings and treatment outcomes. Eur Arch Otorhinolaryngol 274, 2319–2325 (2017). https://doi.org/10.1007/s00405-017-4481-3

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