Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “TYMPANOPLASTY”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 1,531 records · Page 85Linked to original sources
PubMed1993

Prognostic factors in tympanoplasty: a statistical evaluation.

In a group of 52 patients with chronic otitis media that underwent a myringoplasty, pressure equalization mucociliary clearance of the Eustachian tube and degree of pneumatisation of the mastoid have been studied, and their statistical relationship with surgical outcome evaluated. The only statistically being significant correlation was mucociliary clearance time.

Adolescent↗
PubMed1993

[Homograft of incus in tympanoplasty].

Homograft of incus was applied for reconstruction of the ossicular chain in 34 patients. Two basic variations of plastics have been performed. The handle of malleus was supported by the body of the incus with the drilled hole, while the long process of the incus, after a little shortening, was put on the movable footplate of stapes. In the second variation the long process of the incus was amputated--here the drill hole was performed for the head of stapes and the second one in the body of the incus for the handle of malleus. In the average three years after the operation the good hearing results were achieved in 19 (55.9%) patients. From this group in 8 (23.5%) patients aerbone gap closure was at the level of 10 dB. The bad morphologic results was ascertained in 3 patients.

Adolescent↗
PubMed1993

Effect of intraoperative manipulation and preservation on fascia temporalis used in tympanoplasty.

Fascia temporalis (FT) is generally used as grafting material for primary or revision surgery for chronic ear disease. In the latter case, homologous FT, stored in various solutions after the intraoperative preparation, that aims to dehydrate, is often used. In this study, an ultrastructural analysis of FT has been carried out in order to determine whether its structure is affected by the different steps that take place before its application as a homograft. As well as light, transmission and scanning electron microscopy, immunoperoxidase technique for testing monoclonal antibodies against different collagen types was performed. The surface appearance of FT proved to be increasingly affected by the intraoperative manoeuvres. Moreover, 10% formalin proved to give a better preservation of the surface appearance of FT than did 70% alcohol which, also after a short period of preservation (15 days), caused severe surface alterations. No particular changes in the ultrastructural appearance of FT were noticed that could have been attributed to the length of preservation. Type IV collagen was detected in the 30-day samples of both alcohol- and formalin-preserved specimens. From these results, one can speculate that, despite the major ultrastructural changes induced in FT by the intraoperative preparation and by its preservation, this tissue is still able to maintain a proper connective network. This finding could explain the reliability of homologous FT for the repair of tympanic membrane perforations.

Ethanol↗
PubMed1994

Autologous fibrin glue for tympanoplasty.

To produce autologous fibrin glue (AFG) of improved quality, the concentration and amount of materials for AFG were modified. The quality of AFG was assessed through determination of fibrinogen level in plasma, observation of product during production, and testing for bonding strength before application. The AFG produced under these conditions was used successfully as a helpful adjunct in middle ear surgery.

Adhesiveness↗
PubMed1995

Improvement of the surgical technique of anterior tympanoplasty in cholesteatoma.

Technical improvements in anterior tympanotomy with a transmastoid approach in cholesteatoma surgery are reported. Mastoidectomy must be extended to the root of the zygoma and the space anterior to the malleus head must be opened. For this purpose, the visual axis must coincide with the external meatal axis. In this head position, complete removal of the anterior attic bony plate becomes possible only through the transmastoid approach, without touching the ossicular chain. In the case of the pyramidal type bony plate with a normal ossicular chain, the incudo-malleal joint is temporary subluxated, as this is more convenient for access and removal of pathology than incudostapedial joint subluxation. Our clinical results on postoperative hearing showed no damage to the inner ear by the improved technique.

Cholesteatoma, Middle Ear↗
PubMed1996

Tympanoplasty for the anterior-superior perforation in children.

Anterior-superior perforations of the tympanic membrane have proven more difficult to repair than other perforations, and many investigators have found such repairs to be problematic. We report a technique in which the tympanic membrane is released from the malleus, and the graft is placed medical to the remnant, lateral to the malleus, and medial to the tympanomeatal flap. In a series of 42 cases the short-term surgical success rate (represented by an intact graft at 6 months) was 98%, with 95% of ears remaining free of reperforation to the end of follow-up. Postoperatively, 90% of children had an air-bone gap of 20 dB or less and 100% of children had an air-bone gap of 30 dB or less. Eighty-seven percent of subjects demonstrated a speech reception threshold (SRT) of 20 dB or better, whereas 100% of subjects demonstrated an SRT of 30 dB or better. These results compare favorably with those reported at this institution for repair of perforations of any quadrant in children, and those of other investigators for anterior superior perforations in adults.

Adolescent↗
PubMed1995

[The study of the modification of the natural resonance of the external ear following tympanoplasty].

The shape, position and amplitude of the natural resonance curve of external ear is related to sensation evoked in a subject by sound coming from the external environment. The involution of this curve varies from individual and is the sum of the effects provoked on the incident sound by the head, auricle and the conformation of canal (EEE = External Ear Effect). Natural amplification supplied by the system allows the individual to distinguish natural sound, whose being natural make them pleasant to hear. Any interventions that modifies the anatomy of the auricle and/or the canal activity alternates the REUR (Real Ear Unaided Response) to some degree. Restoration of basic anatomical conditions are choice of interventions which displace the curve only slightly allows a physiological sensation of sound to be maintained. Surgeon often neglect this little studied aspect preferring to evaluate this work in terms of quantity thus rather ignoring the quality of sound achieved.

Ear↗