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At least 397 records · Page 22Linked to original sources

Tympanic reconstruction. Fifteen year report on tympanoplasty. Part II.

This survey was carried out to evaluate techniques in current use for the treatment of chronic suppurative otitis media. Part I concerns the incidence of cholesteatomatous complications following combined approach tympanoplasty (CAT). Residual and Recurrent cholesteatoma occurred much more frequently than had been expected or reported elsewhere. Although the incidence of Recurrent cholesteatoma has been markedly reduced by technical modifications, Residual cholesteatoma was discovered inadvertently in one out of every seven previously cholesteatomatous ears in which a second operation for ossicular reconstruction was performed. In at least one-third the disease had been left in the epitympanum. Although many cholesteatomatous cysts might lie dormant for years, and possibly never give rise to serious consequences, it can no longer be claimed that CAT provides a satisfactory means of eradicating cholesteatoma unless re-exploration operations were continued until eventually the tubotympanic cleft could be shown free of cholesteatoma.

Animals↗

Transcanal tympanoplasty: a 15-year report.

The data presented would seem to support the following conclusions: 1. Transcanal tympanoplasty employing connective tissue underlay grafts, ossicular bone prostheses, and avoidance of mastoid exposure, unless irreversible disease is present, seems to meet contemporary standards of efficacy, safety, and long-term stability when performed on patients with either chronic suppurative otitis or atelectatic otitis. 2. Although chronic suppurative otitis and atelectatic otitis have differing characteristics and are of seemingly different pathogenesis, no statistical differences were found in the pattern of ossicular destruction or in their response to surgical intervation. Hearing results, long-term stability of results, and pattern of complications had no significant differences. 3. Hearing results in those patients with destruction of the malleus handle in whom an L-shaped prosthesis was used were significantly different and poorer than when the malleus was present. A different approach, perhaps employing homograft tympanic membrane with incorporated malleus and staging, may be indicated for these patients. 4. The use of polymeric silicone film and homograft nasal cartilage was associated with a significant number of complications and has been abandoned, substituting instead absorbable gelatin film and ossicular bone transplants. 5. Since no significant changes were seen following one year's observation, this period would seem to be statistically suitable for analysis of results. This conclusion can only be applied to those patients with either chronic suppurative otitis or atelectatic otitis and in whom the surgical procedures herein described were applied.

Bone Transplantation↗

[The comparative audiometric statistical study of the results obtained with plastipore or with autologous material in tympanoplasty with mastoidectomy].

Two hundred forty-three patients underwent from 1984 to 1989 open (OT) or closed (CT) tympanoplasty and mastoidectomy, generally for cholesteatoma or non-cholesteatomatous chronic suppurant otitis media with some type of destruction of the ossicular chain. The results of the audiometric studies of 8 groups who underwent the same surgical technique using plastipore PORP or TORP, or autologous ossicle or cortical mastoid bone, were compared statistically after 2 years of evolution. Except for one of them, none of groups studied presented statistically significant differences, but the existence of more extrusions with the plastipore caused us to stop using it. The material of choice in our service is the autologous ossicle.

Adult↗

[Long-term effect of the modified type-III tympanoplasty].

Tympanoplasty using reconstructed ossicular chain from auto and foreign rib cartilages were performed on 264 ears with missing malleus. The postoperative follow-ups have been made in 102 ears with auto cartilage for 5-6 years and in 162 ears with foreign cartilage more than 4 years. The hearing level of 79 ears in the former (77.4%) and 124 ears in the latter (76.5%) have been enhanced by 15 dB or to applied hearing level. Long-term hearing improvement was satisfactory. The characteristics of the surgical methods was discussed.

Adolescent↗

Tympanoplasty with mastoidectomy: canal wall up procedures.

Management of the mastoid in cases of chronic otitis media with cholesteatoma remains controversial. Whether to leave the canal wall up or perform a cavity technique continues to be debated. The author reviewed his personal cases of surgery for chronic otitis media over a 5-year period and studied 108 cases without prior surgery who required tympanoplasty with mastoidectomy for cholesteatoma. Thirty-two percent of the cases were in children 15 years of age and under. Over two thirds of the procedures were canal wall up, and the remainder of patients underwent a canal wall down technique with obliteration. There was little difference in the results between children and adults, with the exception of there being a tendency for a greater degree of ossicular destruction in the children and a greater incidence of residual disease at second stage surgery. There was a 3 percent incidence of recurrent cholesteatoma. It appears that the intact canal wall technique is preferable in both children and adults, when circumstances are favorable.

Acute Disease↗

[Surgery for deafness: tympanoplasty].

The communicative task of the auditory system is characterized by the perception of sound in it's complexity. This holds true especially for verbal communication which is the most important part of the condition human of man. Based on these thoughts the development of otosurgery up to tympanoplasty is highlighted.

Deafness↗

[Clinical experiences with dehydrated temporalis fascia in tympanoplasty. Early and late results].

Dehydrated temporalis fascia, an allograft transplant tissue, is very useful in tympanoplasty and tympanomeatoplasty. In 87% of cases tympanic membrane grafts placed in patients with severe chronic otitis media have remained healed without change 4-6 years after surgery. All grafts also remained in position when placed on the posterior wall of the external auditory canal. Good healing was always seen without complications or inflammations. By using these grafts the duration of surgery could be reduced and the cosmetic risk of extending pre- or postauricular incisions to obtains autologous temporalis fascia was unnecessary, especially in revision surgery. The allograft is very easy to handle and is malleable and flexible. The main indications for use of allograft temporalis fascia are patients with chronic otitis media, traumatic tympanic membrane perforations or malformations of the middle ear (such as congenital atresias) requiring tympanic membrane replacement and lining of the posterior wall of the external auditory canal.

Adolescent↗

Middle ear mechanics of type IV and type V tympanoplasty: I. Model analysis and predictions.

An analysis of type IV and type V tympanoplasty procedures was performed using a quantitative model of the acoustic and mechanical properties of the stapes, cochlea, round window shield, and cavum minor air space. Realistic values for the impedance of these structures were determined from anatomic and functional measurements in normal ears. These model values lead to predicted type IV hearing results that match well with the best surgical results over a broad frequency range (125-4000 Hz). A parametric study of alterations in the model impedances reveals that a good hearing result depends on a mobile stapes, proper aeration of the cavum minor air space, and a sufficiently stiff graft shield. Intersubject variations in the cochlear impedance also can have a significant effect on the postsurgical hearing response.

Acoustic Impedance Tests↗

Middle ear mechanics of type IV and type V tympanoplasty: II. Clinical analysis and surgical implications.

Type IV and type V tympanoplasty operations are simple, robust, and well-established techniques to reconstruct middle ears that have been severely altered by chronic otitis media. In a previous paper, the authors developed a simple four-block physiologic model to describe hearing results after these procedures. This paper presents a comparison of model predictions to hearing results obtained from a detailed retrospective clinical review of 30 type IV and type V procedures. Audiograms predicted by the model and those observed clinically show good agreement over a wide frequency range (500-4000 Hz) and for many different clinical conditions. Thus, this model reliably predicts postsurgical hearing results. The application of quantitative analyses provided by this model permits the formation of a few simple surgical rules that may improve postoperative hearing results. (1) The footplate should be left as mobile as possible (e.g., by covering it with a very thin split-thickness skin graft, as opposed to a fascia graft, which will tend to stiffen it). If the footplate is ankylosed, it should be removed and replaced with a compliant tissue graft, such as fat. (2) The round window acoustic graft shield should be made as stiff as possible. If the shield material used is temporalis fascia, then one should consider using more than one layer, or reinforcing it with cartilage. (3) An attempt should be made to create an aerated cavum minor containing at least 0.03 cc of air.

Adolescent↗

[Long-term outcome of tympanoplasty in chronic suppurative middle ear infection in childhood].

Controversy continues regarding tympanoplasty for central perforations due to chronic otitis media in children. Between 1972 and 1988, 144 children (160 cases) were operated on for central perforations after chronic otitis media and were managed at the ENT Hospital of the University of the Saarland, Homburg/Saar. Eighty-seven of these children were evaluable for this study. Post-operative follow-up was more than 5 years in 94% of the cases. The tympanic membrane was closed in 90% of the cases at follow-up examination. The age of the patient did not influence the success rate. Social hearing was improved from 49% before operation to 86% after operation and at follow-up. At follow-up, air-bone gaps were closed to within 10 dB in 67% of the cases, within 20 dB for 88% and within 30 dB for 96%. These very good and stable results show that an early operation can be recommended for children with chronic otitis media to prevent further damage to the middle ear.

Adolescent↗

Tympanoplasty using autologous crushed cartilage.

The effect of crushing was evaluated in three kinds of human cartilages. Tragal cartilage was most regularly crushed and conchal cartilage was not suitable for crushing because of easy fragmentation. In clinical application crushed cartilages were grafted in 53 cases of tympanoplasty for various purposes. i.e., they were used as a reinforcement of the ear drum, a material for attic reconstruction, protector of the prosthesis, etc. The role of crushing and uses of crushed cartilages are discussed.

Cartilage↗

Hearing results in tympanoplasty in Riyadh.

In patients with chronic otitis media, the aims of surgery are to eradicate middle ear disease, prevent recurrent infections, and improve hearing. In most published papers about tympanoplasty, the surgical approaches receive more attention as compared to hearing results. A total of 2015 ears with CSOM but without cholesteatoma, operated upon in a period of 9 years at King Abdul Aziz University Hospital, were studied and analyzed. The results showed 78% perforations closure rate, 19% reperforation rate, and 74% objective audiometry air-bone closure. The results of graft taking and closure of air-bone gap to within 10 dB were better using temporalis fascia compared to dura grafts. Post operative SNHL at 4000 KHz was more in cases using dura graft 6% compared with temporalis fascia 1.9%. Skill, experience, and development of medical facilities in distant areas in developing countries may prove helpful in improving the final results.

Chronic Disease↗

[Failures after tympanoplasty].

Failures and pitfalls in chronic ear surgery have been studied. The material consists of a retrospective study of 616 cases of tympanoplasty. The results were mainly analysed into cases of iatrogenic cholesteatoma (23), labyrinthine fistulae (25) and disruption of ossicular chain (46). The incidence of fistula into the semi-circular canal is high with cholesteatoma, and careful removal of the matrix is recommended to prevent sensorineural hearing loss. Disarticulation of the incudo-stapedial joint is performed to eradicate attic cholesteatoma and protect the cochlea. However, this procedure gives a risk of damage to the inner ear. The frequency and nature of sensorineural losses following chronic ear surgery have been discussed. Surgical precautions are advocated to prevent inner ear damage or other iatrogenic complications.

Chronic Disease↗

[Paralayrinthine cholesteatoma and tympanoplasty (author's transl)].

Closed tympanoplasty techniques greatly increase the risk of recurrent cholesteatoma. This is obvious as many surgeons using these methods insist on a necessary obligatory control operation as a "second look". In this paper cholesteatomata are classified according to their tendency to extend within the petrous pyramid and the subsequent danger of invading semicircular canals, cochlea or cranial fossae. The predisposition to this type of growth is present in the well defined "medial" type of epitympanic cholesteatoma, and more in the anteriorly than the posteriorly placed ones. As infection becomes less prominent in countries with advanced medical services, especially otology, the cholesteatoma hidden behind a small dry epitympanic perforation and those even with no perforation termed "hidden primary cholesteatoma" become more frequent. They cause their own special symptomatology, not infrequently a slowly progressive facial palsy. Every cholesteatoma requires mandatory prophylactic surgery. This means the complete exposure of the danger area, the epitympanum, and nowadays the possibility of the syncronous complete reconstruction of a normal middle ear and external canal, i.e. osteoplastic epitympanotomy.

Cholesteatoma↗

Hearing and anatomical results with homograft tympanoplasty.

Homograft tympanic membranes and ossicles have been found to be a valuable asset in tympanoplasty surgery. The homograft tympanic membrane has been used in conjunction with a canal skin graft with a graft take rate of 94 per cent. Anatomical results have been gratifying in that most patients are totally rehabilitated and may swim or shower without restrictions. The homograft incus has been sculptured into prostheses to reconstruct the sound conduction mechanism, both at the initial procedure and in revision cases to improve the hearing.

Ear Diseases↗

Ear disease in Western Canadian natives with a note on treatment by tympanoplasty.

A review is given of otitis media in northern native populations, including incidence, natural history, the effects on the individuals affected, and what is known of causative factors. A brief account of tympanoplasty is presented, followed by a description of the method used at the Charles Camsell Hospital, and the results obtained. Suggestions are made for improved follow-up and a plea is made for improved home conditions for the native population.

Canada↗

The relevance of using tragal cartilage in tympanoplasty.

Chronic endotympanic depression is a pathological situation which leads to tympanic atelectasis, retraction pockets and cholesteatoma. It is also at the origin of tympanoplasty failure. Tragal composite perichondrium-cartilage graft is a procedure which gives good results in these difficult surgical cases.

Humans↗

[Preliminary functional results of tympanoplasty with palisade cartilage].

Total or subtotal reconstruction of the tympanic membrane with cartilage palisades counteracts the tendency to retraction observed in ears with functional problems of the tube or altered gas exchange of the mucosa, in contrast with "soft" autologous materials such as temporal fascia or perichondrium. Because of its low turnover, cartilage is more resistant to the prolonged absence of neovascularization from the periphery in (sub) total perforation making it more resistant to infection. However, the use of palisade cartilage has been questioned for the functional recuperation of the middle ear because of its rigidity and thickness. A retrospective study was made of the functional results of 148 type III tympanoplasties with partial or complete reconstruction with cartilage after a one-stage procedure. A comparison of 108 ears with a mean postoperative follow-up of 20 months and 40 ears with a mean follow-up of more than 6 months showed no statistically significant difference in the overall functional results. A "social" hearing level (GAP < 30 dB) was achieved in 83.2%: the gain was 1-30 dB in 75.6% of cases (n = 112). No statistically significant differences were found between the functional results of primary surgery and re-operation. Statistically significant differences were found in the functional results of canal wall down and canal wall up procedures.

Cartilage↗