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PubMedDate not supplied

Otitis media, cleft palate, and middle ear ventilation.

Chinchillas with unilateral tympanostomy tubes in place underwent palate-clefting in an effort to determine the histologic and bacteriologic effects of using tympanostomy tubes in the treatment of otitis media. The tympanostomy tube appeared to almost totally eliminate the occurrence of middle ear effusion but had much less, if any, effect on eliminating the middle ear inflammation which occurs in the clefted chinchilla.

Animals↗
PubMed1981

Middle ear ventilation with the Castelli membrane tube.

This report evaluates the use of the Castelli type membrane tympanostomy tube in combination with adenoidectomy or adenotonsillectomy. One hundred and sixty two ears were studied. Children with mucoid or seromucoid fluid only were included. The ears were unprotected during swimming, bathing, etc. The average length of intubation was 7 months; 7 1/2 developed middle ear problems with the tubes in place and 7% developed external ear problems. All of these complications were treated without residua.

Adenoidectomy↗
PubMedDate not supplied

Middle ear ventilation in secretory otitis media.

The Eustachian tube function was determined repeatedly in 42 patients during as well as after the course of secretory otitis media. Air pressure equalization technique and impedance audiometry were used. Also the size of the mastoid air cell system was determined. It was found that poor tubal function and a small mastoid air cell system are signficance findings in these ears.

Adult↗
PubMedDate not supplied

Effects of large-bore middle ear ventilation tubes.

Patients with chronic otitis media that did not respond to conventional treatment were studied for the types and incidence of complications from the use of large-bore tubes inserted into their ears. The most common complication was otorrhea (41%, 50 of 123 ears). Permanent perforation occurred in 25% (17/68 ears). Use of large-bore tubes proved effective and continues to be indicated in certain conditions of chronic otitis media that are refractory to other forms of treatment.

Adolescent↗
PubMed1981

Long-term middle ear ventilation.

A 15 year experience using wide flange tube for long term ventilation is reported with emphasis on complications and is compared in some respects to a small series of Paparella tube implants. At one time or another 70% of the wide flange tube implants were complicated, as were 100% of the Paparella tubes. The incidence of infection over a long period is high, at times only manageable with removal of the tube. However, longevity when tubes are removed for uncontrolled complication is still almost 3 years and as long as 12 years. The average longevity for electively removed tubes exceeds 4 years. Peritubal drum atrophy is a significant side effect of long-term ventilation and predisposes to permanent perforation. It contributes to spontaneous extrusion which occurred in 5% of the implants. There were 49 permanent perforations in the wide flange series. Yet, a permanent perforation for permanent or severe chronic Eustachian tube dysfunction is not all bad. These permanent, mostly anterior perforations were not associated with much hearing loss; an average of 7.1 bd. Alternative methods to achieve permanent ventilation are discussed and do not seem more reliable or less complication prone.

Adolescent↗
PubMed1978

Burn perforation as a method of middle ear ventilation.

Eardrum perforation caused by burn is well known to have a tendency to resist closure. This unfavorable tendency to resist closure. This unfavorable tendency can be turned to the benefit of patients with severe, Eustachian tube dysfunction. Pressure equalization of sufficient duration can be produced by making a burn perforation of the tympanic membrane. Multiple, small perforations placed closely or a large perforation of about one eighth of the tympanic membrane will remain patent and equalize pressure across the tympanic membrane for a period greater than three months. The procedure is of a minor nature comparable with myringotomy or with the removal of a plugged clot from a tube.

Ear Diseases↗
PubMed2004

Long-term ventilation of the middle ear using a subannular tympanotomy technique: a follow-up study.

The results of a nine-year series of patients who underwent long-term middle ear ventilation using a tympanotomy technique are presented. The original series of 26 cases was published in 1995. The same series has now expanded to 37 cases, which form the basis of this follow-up study. In contrast to the original series we found a high spontaneous extrusion rate (68 per cent) and in 27 per cent of cases complications necessitated removal of the subannular T tube. In favour of the technique was a low perforation rate after extrusion or removal (eight per cent). Although only nine per cent underwent re-ventilation this is unlikely to represent resolution of the middle ear effusion in the remaining cases. We conclude that the adverse effects of the subannular tympanotomy technique for long-term ventilation of the middle ear outweigh the benefits when compared with the traditional technique of placing a T tube through a myringotomy incision.

Adolescent↗