title: Audit of the incidence of persistent perforation of the tympanic membrane following grommet removal or extrusion.
abstract: The incidence of persistent perforation following grommet removal or extrusion in 210 ears was assessed, and found to be zero per cent. Collar button grommets were retained longer than Shepard grommets, and the percentage of ears requiring two or more tube insertions was 51.9 per cent.
authors.affiliation: Department of Otolaryngology, Salisbury District Hospital, Salisbury, Wiltshire SP2 8BJ.
authors.forename: G B
authors.initials: GB
authors.lastname: Todd
mesh_terms: D020878:Device Removal; D004867:Equipment Design; D006801:Humans; D015994:Incidence; D008485:Medical Audit / Q000379:methods*; D008876:Middle Ear Ventilation / Q000295:instrumentation; D012189:Retrospective Studies; D013997:Time Factors; D018058:Tympanic Membrane Perforation / Q000453:epidemiology*