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  • Title: Cine magnetic resonance imaging: evaluation of persistent airway obstruction after tonsil and adenoidectomy in children with Down syndrome.
    Author: Shott SR, Donnelly LF.
    Journal: Laryngoscope; 2004 Oct; 114(10):1724-9. PubMed ID: 15454761.
    Abstract:
    OBJECTIVE/HYPOTHESIS: Although usually successful, not all obstructive sleep apnea is cured by removal of the tonsils and adenoids (T&A). This is particularly true in children with Down syndrome and craniofacial anomalies. This is because of the multiple levels of obstruction in their airways, with obstruction present not only at the level of the tonsils and adenoids but also from base of tongue obstruction, soft palate collapse, and hypopharyngeal collapse. The cine magnetic resonance image (MRI) is useful in evaluating the upper airway in those patients who have not achieved a normal polysomnogram after T&A surgery. STUDY DESIGN: Prospective case series. METHODS: Fifteen children with Down syndrome who had previously undergone a T&A but continued to have abnormal postoperative polysomnograms underwent a cine MRI with fast gradient cine MRI images. RESULTS: The cine MRI identified different areas and levels of obstruction that ultimately affected the children's treatment courses. Recurrent adenoid tissue, glossoptosis, soft palate collapse, hypopharyngeal collapse, and enlarged lingual tonsils were identified. The results as well as several illustrative cases are presented. CONCLUSION: Cine MRI evaluates upper airway obstruction in children who may have multiple sources of obstruction causing their obstructive sleep apnea. This is particularly helpful in children with Down syndrome and craniofacial anomalies. This technology is useful in all children with complex upper airway obstruction.
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