Influence of the upper respiratory tract infection on tubal compliance in children with otitis media with effusion.

To clarify the influence of inflammation on tubal compliance in children with otitis media with effusion (OME), we investigated the change of compliance of the ET by upper respiratory tract infection (URTI) in 18 children (23 ears) with OME using the forced response test. The tubal compliance index (TCI), the ratio of passive tubal resistances at two different airflow rates, significantly increased during URTI represented by acute rhinitis or paranasal sinusitis in comparison with non-URTI periods (paired t-test: t = 4.14, p < 0.001). In nine ears, the TCI could be followed for some months after that, during which the children had had URTI several times. A clear reproducible correlation was found between the presence or absence of URTI and the TCI values; the TCI values increased again during URTI and decreased after the URTI periods. These results seemed to support our hypothesis that compliance of the ET may depend not only on the property of the cartilaginous framework of the ET but also upon the mucosal condition.

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