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Results for “MYRINGOPLASTY”

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At least 127 records · Page 7Linked to original sources

PubMed1995

Myringoplasty and tympanoplasty--results related to training and experience.

The results of surgery in a series of 452 ears having either myringoplasty (281 ears) or tympanoplasty (171 ears) were studied in relation to the experience of the surgeons. The trainees received an annual course in temporal bone dissection and were given daily surgical instruction in the operating theatre. The 142 ears operated by them showed less disease than those operated upon by the programme chairman (114 ears) and by the faculty (196 ears). The performance of the trainees was safe, and as to healed tympanic membrane and hearing results all studied parameters were statistically equal to those of the faculty. Repair of anterior perforations proved to be the most difficult and the overall results of both the faculty and trainees left place for improvement. On-line recording of surgical data and annual evaluation of an individual surgeon's results is suggested as a necessary means for continuous post-graduate training.

Education↗

PubMedDate not supplied

Tympanoscope-assisted myringoplasty.

Thirty ears of 29 patients with different sized perforation of the tympanic membrane were operated on with the aid of rigid otoendoscopes. The technique has a significant novel feature: endoscopy of the tympanic cavity through a perforation with small tympanoscopes 1.7 mm in diameter with a 0%. The postoperative air-bone gap was less than 10 dB in 90% of the ears. It was concluded that tympanoscope-assisted myringoplasty is a reliable and simple procedure with the benefit of minimal trauma in healthy tissue and that it is a feasible approach for day-case surgery with an ordinary success rate of tympanic membrane closure and hearing results.

Adolescent↗

PubMed2006

Biomechanical modeling and design optimization of cartilage myringoplasty using finite element analysis.

The purpose of this study was to determine the acoustic transfer characteristics of cartilage for optimal cartilage myringoplasty. In order to do so, we developed a cartilage plate/tympanic membrane-coupled model using finite element analysis. Cartilage specimens of the tragus were obtained from fresh human cadavers, and the parameters of the tragus were determined by curve fitting and cross-calibration. A cartilage plate was used to repair an eardrum perforation, and the new coupled tympanic membrane-cartilage complex was loaded into our 3-dimensional biomechanical model of the middle ear for analysis. Our results show that first the beta-damping value of the cartilage plate depends on frequency. The value of beta damping was close to 3 x 10(-4) s at lower frequencies and 5 x 10(-6) s at higher frequencies. Secondly, reducing cartilage thickness leads to an improvement of its acoustic transfer qualities. From an acoustics point of view, the 0.1- to 0.2-mm cartilage plate seems to be most preferable with regard to tympanic membrane vibration. Furthermore, thicknesses of 0.2 mm at lower frequencies and 0.1 mm at higher frequencies were regarded as good compromises between sufficient mechanical stability and low acoustic transfer loss.

Biomechanical Phenomena↗

PubMed1980

Stability of myringoplasty based on late results.

In 387 ears the late results, 3--15 years after myringoplasty with fascia, were analyzed on the basis of the character and localization of the perforation. 8.3% had recurrent perforations 0.5--2 years after operation, of which 2.8% were closed at reoperation. However, perforation recurred in 3.4% of other ears so that, at the last reexamination, the total recurrence of perforation amounted to 8.8%. Most of these were small, localized anteriorly or inferiorly. There were no differences in the frequency of the recurrent perforations related to the character of the preoperative perforation. The hearing, as judged by the air-bone gap closure, showed good stability with increasing observation time.

Ear Diseases↗

PubMedDate not supplied

Myringoplasty. A review of 472 cases.

We reviewed the records of 472 patients who had undergone myringoplasty during an 11-year period at the Otologic Medical Group. There was a statistically significant relationship between the size of the perforation and the degree of hearing impairment, but no relationship between the degree of impairment and the complaint of tinnitus. The majority of operations were performed using the lateral surface fascia grafting technique. Those 168 operations performed postauricularly were successful in closing the tympanic membrane perforation in over 97% of the cases and in reducing the conductive deficit to 10 dB or less in 88%. There were no total sensorineural impairments, although 3% of the patients developed a high tone sensorineural impairment. Blunting in the anterior sulcus and lateral healing of the graft were very uncommon. Canal skin was used as a graft in 16% of the patients. The graft take results and hearing results were less favorable than with fascia.

Adolescent↗

PubMedDate not supplied

Myringoplasty with fascial stakes.

Myringoplasty reinforced by fascial stakes was performed in 87 ears. Small tongue-like fascial projections or "stakes" were used to keep the fascial graft in position. No foreign material was introduced into the middle ear cavity to support the graft and the drum. The technical details of this procedure are described and analysis of the results is presented.

Adolescent↗

PubMed1990

Middle ear gas generation in myringoplasties.

No Gelfoam was used to support the vein in 10 simple underlay vein graft myringoplasties. Computed tomographic studies 24 hours postoperatively showed gas filling 75% to 100% of the middle ears in three ears. The epitympanum and mastoid were also evaluated. Apparently, in some ears the middle ear generates gas in the immediate postoperative period to support fresh vein grafts.

Blood Vessel Prosthesis↗

PubMed1991

Myringoplasty in children.

This series examines the results of myringoplasty in children using the overlay technique. Controversy still surrounds the issue of proper timing of surgery on the basis of preoperative assessment of tubal function. Results of this technique in children, using contralateral ear status as the primary predictor of success, found an overall success rate of 78%. Age appears to be a significant factor because children 10 years old and younger were found to have a higher incidence of surgical failures.

Adolescent↗

PubMedDate not supplied

[Sandwich-graft myringoplasty: the authors' personal technic and results].

The authors describe the anatomic and functional results obtained with a sandwich myringoplasty technique (MPL) employing an endaural approach. The suggested technique is a modified sandwich MPL by endaural approach with a reduced Shambaugh incision, a systematic profiling of the canal wall bulge and separation of the meatal and tympano-meatal flaps that are maintained pedunculated. The temporal fascia is inserted between the fibrous layer of the tympanic remnant and a single pedunculated tympano-meatal cutaneous flap replaced in the original location. The authors present 72 cases operated between January 1987 and December 1989 for perforations involving up to three quadrants. In 93.1% of the cases a complete and lasting resolution of the perforation was obtained. Of the 5 failures, 4 presented a perforation smaller than the original one. An average (250, 500, 1000 Hz) functional recovery of 14.1 dB was observed compared to an average pre-operatory gap of 21.6 dB. In 25% of the cases, average recovery was greater than 25 dB and in 5 patients a slight worsening with an average difference of -3.3 dB was observed. On the whole, in 41 patients a residual post-operatory gap of only 10 dB was achieved. The anatomical results obtained with the MPL presented are similar to those found in the literature describing the classical overlay technique. However, the cases reported do not present those inconveniences associated to the latter technique (lateralization of the graft and blunting). The anatomic and functional results obtained with the technique discussed are on the whole superior to those described with the underlay and the classical overlay techniques. The Authors believe that this is mainly due to the absence of the gelfoam in the middle ear and to the double contention and vascularization of the temporal fascia graft. By means of the profiling of the canal wall the endaural approach permits a good view of the operating field. Furthermore, it is less traumatic and more acceptable to the patient than the postauricular one that has to be limited to the MPL where there are clinical indications for the exploration of antrum. The personal technique here presented implies, however, a certain presence of epithelial pearls. Their localization is nevertheless facilitated by the absence of blunting, thickening and lateralization of the graft. This allows for an early and easy removal on an out-patient basis. Other inconveniences of the technique are the length of the procedure and a more difficult control of the ossicular chain.(ABSTRACT TRUNCATED AT 400 WORDS)

Adolescent↗

PubMed2005

[Myringoplasty and its effect on a vestibular function in patients with otitis media purulenta chronica (OMPC)].

A complex vestibulologic and audiologic examination was made in 25 patients with OMPC free of mesotympanitis before and after experimental myringoplasty with hen's egg amnion. The patients were divided into two groups depending on the presence of vestibular complaints. Partial or complete disappearance of subjective vestibular symptoms, reduced stimulation of the vestibular receptors (by 19%, on the average) were detected by experimental vestibular tests on the side of the affected ear. The asymmetry coefficient by labyrinth lowered by 31.1%, on the average.

Caloric Tests↗

PubMed2005

[New technique of myringoplasty with cartilage in suspension--preliminary results].

The authors describe a surgical technique of simple myringoplasty with a cartilage graft which can be done as a day surgery. The main point is the suspension of this graft by a suture (Vicryl 6-0) to the skin of the external auditory meatus. The preliminary results on twenty seven patients are successful with a rate of complete closure which is 92.6%. This technique must be reserved for dry, limited, nonmarginal perforations and without ossicular problem or connection with the handle of the malleus.

Ambulatory Surgical Procedures↗

PubMedDate not supplied

[Review of 156 myringoplasties].

We report the anatomical and functional results of 156 myringoplasty; 134 with onlay surgical technique and 22 with underlay technique. We comment the climatologic of our area and its relation with the surgical failures.

Adolescent↗

PubMed1987

Autologous tissue seal in myringoplasty.

A prospective, controlled study on the efficacy of autologous tissue seal in myringoplasty was performed. In 29 patients with dry perforations, temporalis fascia was glued with tissue seal. In 30 patients the fascia was fixed with Gelfoam balls. No significant differences in take-rate was found between these two methods.

Evaluation Studies as Topic↗

PubMed1986

Mini-myringoplasty in the treatment of tympanic atelectasis.

Mini-myringoplasty is an outpatient procedure developed to simultaneously lateralize the tympanic membrane and provide middle ear ventilation in patients who have developed atelectasis. This paper describes the operative procedure and reports on 50 consecutive cases in which these objectives were achieved. Patients experience a minimum of discomfort. Restoration of the normal tympanic membrane configuration and improvement in hearing are noted within a few days.

Adolescent↗

PubMed1985

[Myringoplasty in children].

An anatomical success rate of 81% was obtained in 150 children 2 to 15 years of age operated upon by myringoplasty in the hospital Bretonneau, Paris between 1977 and 1984. Results were unrelated to age the season or the condition of the mucosa. Adverse factors were a previous history of a transtympanic aerator, a velar cleft or bilateral perforations. Mean functional gain after 1 year was 14 dB. It was not related to age or the technique used.

Adolescent↗

PubMed1984

New perspectives in myringoplasty.

Until 1950 the treatment of a perforated eardrum consisted of covering the drum permanently with artificial material. Since then a surgical technique to establish a functional reconstruction of the eardrum was developed (myringoplasty). A survey of the biological grafting materials used in this technique is given. Biodegradable and non-degradable synthetic materials may prove to be a valuable supplement of the existing biological grafting materials. Artificial eardrums made from several biodegradable poly(alpha-hydroxy acids) and poly(alpha-amino acids) and made from a number of microporous poly(tetrafluorethylene) membranes and from a microporous bisphenol-A poly(carbonate) membrane were implanted into the ears of rats and dogs and as a reference subcutaneously. The implants were histologically examined for periods up to one year. From the biodegradable polymers studied poly(beta-benzyl-L-aspartate-co-L-leucine) 50/50 evoked the least tissue reaction and the newly formed eardrums were the best in terms of thickness and overall integrity. The formation of a reinforced eardrum may be accomplished by the support of an inert, very thin, highly porous poly(tetrafluoroethylene membrane) preferably implanted as a composite graft with a biodegradable polymer.

Animals↗

PubMed1980

[Healing rates, cholesteatoma occurrence and functional results in overlay and underlay techniques for myringoplasty (author's transl)].

From a total of 91 myringoplasties, 42% of the grafts used were placed medial to the tympanic membrane while 58% were placed laterally. Successful closures of the perforation were achieved in 68% of the first group and in 62% of the second group. Grafting with canal skin during the procedure or the size of the mastoid air cell system (as demonstrated by x-ray) failed to influence graft success. Cholesteatomas were found in 13% of the patients undergoing overlay techniques but in only 3% of the underlay grafts. Air-bone gaps at 500, 1,000 and 2,000 Hz averaged 12.9 dB preoperatively, and were 4.8 dB postoperatively in patients with medially-placed grafts and 7.4 dB in those patients with the lateral grafts.

Cholesteatoma↗

PubMed1995

Allograft myringoplasty.

The tympanic membrane allograft myringoplasty is used for the radical treatment of chronic middle ear disease and the repair of tympanic perforations which are sequellae of the chronic middle ear conditions. In the first part, basic principles, tissue bank and surgical procedures, are explained in detail. The second part shows that this technique ensures not only total eradication of the pathology, but is favoured by the specific morpho-, physio- and bio-compatibilities of the allograft.

Biocompatible Materials↗