The mini-grommet and tympanosclerosis.
One hundred and sixteen children with otitis media with effusion underwent myringotomy and insertion of a conventional pattern of Shah grommet in one ear and the much smaller Mini Shah grommet in the other. Close observation post-operatively determined the comparative rate of extrusion, recurrence of effusion, and of onset and degree of tympanosclerosis. At one year review, the Mini Shah shows a significantly earlier extrusion and a greater tendency to recurrence of otitis media with effusion. However, this is compensated by a decreased incidence of tympanosclerosis and reduced severity in those affected. This tends to support the view that shear forces produced by heavier patterns of ventilation tube promote tympanosclerosis.
Hampal
S
S
Research Foundation, North Riding Infirmary, Middlesbrough.
Flood
L M
LM
Kumar
B U
BU
D001301:Audiometry, Pure-Tone; D002648:Child; D002675:Child, Preschool; D004432:Ear, Middle / Q000473:pathology*; D004867:Equipment Design; D006801:Humans; D008876:Middle Ear Ventilation / Q000009:adverse effects / Q000295:instrumentation; D010034:Otitis Media with Effusion / Q000503:physiopathology / Q000601:surgery*; D011183:Postoperative Complications / Q000209:etiology*; D012008:Recurrence; D012598:Sclerosis / Q000209:etiology; D013997:Time Factors