Assessment of hearing in children in postoperative treatment of choanal atresia

Lidia Zawadzka-Głos, Anna Bielicka, Mieczysław Chmielik

Summary
Choanal atresia is a congenital abnormality often coexisting with other developmental abnormalities. The treatment of choice in this condition is surgical restoration of choanae patency using a transnasal or transpalatal operative approach. After surgical treatment, separators are fixed for several weeks in the posterior choanae and nasopharynx. Surgical transpalatal intervention and extended retention of separators in the posterior choanae and nasopharynx may cause auditive tube dysfunction and otitis media with effusion. The aim of this work was the estimation of the occurence of otitis media with effusion in children under post-operative treatment after choanal atresia depending on the surgical approach applied. A summary of the period 1959-2002 in the Department of Paediatric Otorhinolaryngology in Warsaw shows that 175 operations were performed because of choanal atresia. A group of 11 children operated on choanal atresia between 1996-2002 was examined. Acoustic impedance audiometry was performed in all children. Bilateral choanal atresia was recognised in 4 children, and unilateral choanal atresia in 7 children. A tympanometry curve type B was obtained in 4 children, but a tympanometry curve type A was found in 7. In the examined group we did not find a dependence between the type of operative approach in the surgical treatment of choanal atresia and otitis media with effusion occurrence.

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