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The middle ear pressure does not change after adenotonsillectomy in children younger than 10 years old

Bertha Beatriz Montaño-Velázquez, Laura Alejandra Villanueva-Padrón, Ernesto Conde-Vázquez

    Revista De Investigacion Clinica; Organo Del Hospital De Enfermedades De La Nutricion
    |June 25, 2014
    PubMed

    Insights

    Adenotonsillectomy in children may cause temporary negative middle ear pressure, which typically resolves within a week. This study assessed middle ear pressure changes following adenotonsillectomy in young children, finding no permanent hearing loss.

    Area of Science:

    • Otolaryngology
    • Pediatric Surgery
    • Audiology

    Background:

    • Adenotonsillectomy is a common procedure in children.
    • Middle ear pressure abnormalities can affect hearing.
    • The impact of adenotonsillectomy on middle ear pressure requires further investigation.

    Purpose of the Study:

    • To evaluate the short-term effects of adenotonsillectomy on middle ear pressure in children under 10 years old.
    • To determine if these effects are permanent or transitory.
    • To assess any associated changes in hearing thresholds.

    Main Methods:

    • 20 children (4-9 years old) underwent tympanometry and pure tone audiometry before and up to 21 days after adenotonsillectomy.
    • Surgical medications included dexamethasone, atropine, propofol, and sevoflurane.
    • Middle ear pressure and hearing thresholds were analyzed.

    Main Results:

    • A transient decrease in middle ear pressure (below -99 daPa) was observed in 6 children on day 1 post-surgery.
    • Middle ear pressure normalized by day 7 in all patients.
    • Hearing thresholds remained within normal limits (≤ 20 dB nHL) throughout the study period.

    Conclusions:

    • Adenotonsillectomy, particularly with specific anesthetic agents, may temporarily induce negative middle ear pressure in young children.
    • This pressure change appears to be transient, resolving within one week without causing hearing loss.
    • Close monitoring of middle ear pressure is recommended for children experiencing otalgia or with risk factors for middle ear disease post-adenotonsillectomy.

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