Eustachian tube function following adenoidectomy: an evaluation by sniffing

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Abstract
Recent investigations have demonstrated an association between sniff-induced negative middle ear pressure and otitis media with effusion. This is taken as evidence of Eustachian tube malfunction. Adenoidectomy is frequently performed as part of the surgical management for otitis media with effusion, but whether this affects Eustachian tube function is uncertain. The aim of this study was to investigate the hypothesis that if adenoidectomy improved Eustachian tube function, children who had undergone adenoidectomy would show less tendency to generate a high negative intratympanic pressure by sniffing. Eustachian tube function was studied actively in 40 children with otitis media with effusion. Twenty children, selected at random, underwent adenoidectomy and all 40 had a unilateral grommet inserted. Eighty-five percent of the children could create a negative middle ear pressure by sniffing, but there was no difference in the number of ''sniff + ve'' children between the adenoidectomy and control groups (P > 0.5), or in the magnitude of the negative pressure induced. It is concluded that a high percentage of children with otitis media with effusion are capable of inducing a negative middle ear pressure by sniffing, but this parameter of Eustachian tube function is not affected by adenoidectomy.