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Results for “TYMPANOPLASTY”

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PubMed1996

[Tympanoplasty in clinical practice: use and results].

The halt in the use of allografts has resulted in the use in clinical practice in humans of a product that has been known for at least thirty years: collagen. Interesting experimental animal studies have been performed with the type I and type III collagen currently used: the Tympanoplast. This collagen, already used in numerous medical fields (digestive, renal and neuro-surgery) is of bovine origin. It is purified, and comes in the form of a reticulated plate. It is known for its qualities of reepithelialisation. We have been using it for more than a year for the reconstruction of the tympanic membrane. We use Tympanoplast 100 microns thick. All the cases of myringoplasties have been performed on dry ears, and essentially on partial perforations in reinforcement surgery. The results are most encouraging and depend on the surgical technique employed. On the other hand, the grafts performed on total perforations failed to produce the expected results. The paper presents work of the School, with the anatomical results and comments on the precautions to be taken when using Tympanoplast.

Audiometry↗
PubMed1997

[Tragus perichondrium and cartilage, temporal fascia in tympanoplasty].

Plastic reconstruction of the tympanic membrane was performed with the use of tragus perichondrium and cartilage, temporal fascia in 245 and 141 patients, respectively, Tympanoplastic use of the tragus perichondrium and cartilage provides good morphological and functional results. Such surgery may be a method of choice in filling defects of the tympanic membrane.

Adolescent↗
PubMed1997

[Indications, techniques and anatomic results of the tympanoplasty using palisade cartilage].

One of the major unsolved problems of the middle ear is Eustachian tube disfunction and abnormalities in gas exchange through the middle ear mucosa, which produces negative pressure and may cause retraction pockets, adhesions, or atelectasis. Postoperatively, ear surgeons face a similar problem when conventional autologous material was used to reconstruct the tympanum. Sooner or later, the new tympanic membrane experience retraction, re-perforation and/or extrusion or displacement of the reconstructed ossicular chain. This paper proposes using cartilage as an alternative method of tympanic membrane reconstruction in a personal modification of Heermann's technique. The indications for the "palisade" reconstruction technique with cartilage, technical aspects, and anatomic results after an average of 20 months after surgery are discussed.

Ear Cartilage↗
PubMed1976

[Tympanoplasty].

Explore the source record for details and available documents.

Humans↗
PubMed1996

[Failure in mastoidectomy with posterior canal wall preservation and tympanoplasty case analysis].

Preservation of the posterior canal wall in mastoidectomy is essential for rebuilding normal tympanum and conductive structures, and has been widely recommended. However, controversies remain about the technique due to its complications and diverse results reported. This paper analysed the causes of four failed cases in detail and proposed measure to reduce morbidities and promote success. The review includes case selection, operation staging, surgical techniques and lesion removal etc.

Adult↗
PubMed1997

[The errors of the operative technique as a cause of unsuccessful tympanoplasty. Part II].

This study is based on the author's personal experience in a middle ear reconstructions. Errors can occur at each surgical stage--tympanic membrane and chain reconstructions, mobilisation of the footplate. At any moment the surgeon can gain or loose the dB. The operating technique is the main factor. A proper operative technic includes a good operating approach and excellent hemostasis. The tympanic membrane, should be as thin as possible, exactly and carefully dissected. Care should be taken to avoid any damage to the fascia graft fibers. Bad or unsure material should be discarded. The graft should not be too large because if it overlaps the EAC wall, it narrows the canal. If the graft is too small, secondary edge performation can occur. The shallow placement of the graft risk a bad contact. Opposite--too deep--poor ventilation of the middle ear and may lead to adhesions. The annulus should be well prepared, free of epithelial remnants. If not cholesteatoma could develop and discontinuity between the neotympanium and the ossicular chain abolish the transmission effect. The mechanical and lever principles during reconstruction of the sound transmission should be kept in mind at all times. The reconstructed system must be delicate and light. The round window reflex is the most important indice of good performed reconstruction, and should be used similar to the modern monitoring system. Try to prevent the natural structures. They are the most valuable material for the future reconstruction.

Ear Ossicles↗
PubMed1998

[The explanation of safety parameters of 1.32 microm YAG-Nd laser radiation with 1.32 km wave in middle ear manipulations and its use in tympanoplasty].

Experimental and clinical examination was made of safety of YAG-Nd laser radiation with wave length 1.32 microm. Such radiation is applied in middle ear manipulations. In surgical treatment of otitis media purulenta chronica YAG-Nd laser warrants more accurate, rapid and safe performance of a number of intricate tympanoplastic techniques. At the same time laser cannot replace routine microsurgical instruments which are used in the most part of the surgical intervention.

Chronic Disease↗
PubMed1998

[Tympanoplasty after radical operation].

Surgical results of the middle ear reconstruction after radical operation in 35 patients were presented. The surgery included myringo- and ossiculoplasty as well as rebuilding of the posterior canal wall and obliteration of the mastoid cavity. Most frequently posterior canal wall was reconstructed with the piece of cortical bone, rarely with the cartilage. Mastoid cavity was obliterated with a musculo-periosteal flap and bone chips. Early postoperative results, both anatomical and functional, were satisfactory. The hearing gain was from 5 to 35 dB, mean 17 dB. After a few years' observation, moderate postoperative cavitation of the ear canal was shown in all patients. The mean volume of the ear canal was 1.8 ml (1.4 to 2.8 ml). All ears were dry, however with good, smooth epidermal lining. Social hearing was reached in 42% of cases.

Adolescent↗
PubMed1998

Validation of hearing results in tympanoplasty: a preliminary report.

In the otological literature, the results of middle ear surgery are frequently reported by closure of the air-bone gap and improvement of the air-conduction threshold in dB HL. These parameters are valid as a reflection of the technical success, but do not evaluate the effect of surgery on binaural hearing. In the literature two methods have been proposed for predicting patient benefit in reconstructive middle ear surgery: the Rule of Thumb and the Glasgow Benefit Plot. Both methods are based on the arbitrary cut-off level of 30 dB HL for normal or socially acceptable hearing. However, a reliable preoperative prediction of patient benefit can only be made after validation of the definition of normal or socially acceptable hearing expressed in dB HL by means of a questionnaire measuring the limitations of adequate hearing. A clear relationship is found between the subjective hearing ability and the air-conduction thresholds that supports 30 dB HL as the cut-off level for normal or socially acceptable hearing. Further validation of this cut-off level in a more extensive prospective study is needed to provide a significant prognosis for normal or socially acceptable hearing.

Adult↗