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At least 1,747 records · Page 97Linked to original sources
PubMed1993

Acquired atresia of the external auditory canal. Surgical treatment and results.

Atresia of the external ear canal following recurrent external otitis or surgery for chronic otitis media was treated in 17 ears with a canalplasty procedure using a retroauricular incision. The stenotic meatus was widened by removing fibrous tissue, and the tympanic membrane was deepithelialized. The posterior, superior, and inferior bony canal was widened until the first mastoid cells were encountered. The anterior canal was widened in cases where there was an anterior bony overhang. The bony canal was lined with split-thickness skin grafts. Meatoplasty was performed, and split-thickness skin grafts were grafted onto the margins of the meatoplasty to cover the lateral part of the ear canal. Preoperative and postoperative surgical results, including hearing levels, are presented and compared with those from the few other series from the literature.

Adolescent↗
PubMed1994

A clinical study of human type IV collagen as tympanic membrane grafting material. Preliminary noncomparative study.

OBJECTIVE: To evaluate tolerance for this middle-ear implant and its effectiveness in eardrum healing under various pathologic conditions. SETTING: A 12- to 18-month follow-up case series at an institutional referral center offering hospitalized care. PATIENTS: Twenty-six eligible volunteers suffering from tympanic perforation or tympanic pocket retraction class II and III in Tos' classification. INTERVENTION: Patients underwent implantation with the type IV collagen film (film called "MTY" from the French membrane tympanique). The surgical procedure was similar to those using the temporal aponeurosis or the tragal perichondrium. OUTCOME MEASURE: Anatomic criteria was determined by otoscopy, and functional audiometric criteria was determined by air-borne gap measurements and by effects on cochlear function. RESULTS: Twenty-two of 26 patients were completely healed after 6 months, with no subsequent evolution. Nineteen of 26 subjects underwent a 1-year postoperative audiometric follow-up examination: 13 (68%) had an air-borne gap less than 10 dB, four (21%) had between 11 and 20 dB, and two (11%) had between 21 and 30 dB. Adverse effects included one patient whose MTY fell into the middle ear, three patients with transient myringitis, and one patient with otitis media with effusion. CONCLUSIONS: A human type IV collagen film may be a possible alternative to autologous tissue in tympanic membrane reconstruction. This new biomaterial was tested on patients with various diseases common in clinical otology, and demonstrated a good biocompatibility of MTY in the different pathologic conditions of chronic otitis media. A future randomized, controlled trial will randomly allocate patients to receive either MTY collagen film or tissue from the temporal aponeurosis.

Adolescent↗
PubMed1995

Otitis media with effusion in patients with nasopharyngeal carcinoma, postirradiation.

Eighteen patients with nasopharyngeal carcinoma were subjected to eustachian tube function testing before and 6 months and 5 years after irradiation at the university hospital to investigate the chronological changes of tubal function induced by irradiation and to study the development of otitis media with effusion after irradiation. Improvement of tubal function was found 5 years after irradiation in those ears without otitis media. However, in patients who had otitis media with effusion after irradiation, deterioration of tubal function was persistent, and inflammatory reaction was detected in the upper respiratory tract, including the maxillary sinus and nasopharynx. Thus, the development of otitis media with effusion after irradiation in patients with nasopharyngeal carcinoma is attributable to both tubal and inflammatory factors. Insertion of a ventilatory tube in ears can relieve tubal obstruction but can possibly aggravate the inflammatory process. Therefore, it is our opinion that myringotomy plus local treatment may be preferable to insertion of a ventilatory tube in patients with nasopharyngeal carcinoma who have otitis media with effusion.

Adult↗
PubMed2003

Healthy-side dominance of cortical neuromagnetic responses in sudden hearing loss.

Previous brain imaging and mapping studies have reported findings indicating functional reorganization in the central auditory pathways of patients with profound unilateral hearing loss. This study reports for the first time to our knowledge, using a whole-head neuromagnetometer with monaural stimulation of both intact and affected ears, a pattern of healthy-side dominance for cortical neuromagnetic responses in adult patients in the early stage of idiopathic sudden sensorineural hearing loss, and a pattern of contralateral dominance is verified in controls.

Adult↗
PubMed1978

Ménière's disease in children.

Approximately 3% of all patients with Meniere's disease are in the pediatric age group. These children require extensive evaluation. A history of physical or acoustic trauma should be sought and an allergic work-up should be obtained. A search for metabolic disturbances and identification of inflammatory disorders is also necessary. If a treatable etiology is identified, specific therapy should be directed toward its control. If, after careful evaluation, the etiology remains obscure, non-specific therapy should be instituted in an effort to alleviate the symptomatology of Meniere's disease. Surgical decompression of the endolymphatic sac and drainage into the mastoid cavity results in relieving the symptoms, particularly vertigo, and appears to be efficacious in patients who have failed diligent attempts at medical therapy.

Age Factors↗
PubMed1992

Long-term hearing results of one-stage tympanoplasty for chronic otitis media.

A study of 277 ears with chronic otitis media undergoing one-stage tympanoplasty has been carried out. The mean follow-up period was 6.4 years. Ears with intact ossicular chains were excluded. Ossiculoplasty was performed using autologous ossicles or cortical bone. Mean hearing gain was 10.8 dB. Closure of the postoperative air-bone gap to within 20 dB was achieved in 51% of cases. The best results were obtained in ears with intact stapes, while cholesteatomatous ears showed poorer results than other chronic ears. The present findings show that autologous ossicle and cortical bone are still suitable for ossicular reconstruction in chronic ears, especially when one-stage surgery is preferred.

Auditory Threshold↗
PubMed1981

Late hearing results after paraffinplasty or silastic sheeting.

The long-term hearing results are presented for 135 ears operated on radically. In 59 of the ears temporary paraffin filling of the tympanic cavity was employed after the removal of the tympanic mucosa ot operation. The filling material was removed, and the ossiculoplasty was performed about 6 months later. In 76 ears a one-stage operation with tympanoplasty and Silastic sheeting was employed. There were no statistical differences between the groups of ears mentioned according to hearing results early (1 year) or late (5-15 years) postoperatively or in the deterioration of the air-bone gaps after the first postoperative year (P greater than 0.05). The late change in the air-bone gap was significant in both groups (paraffin group: 6.1 dB; Silastic sheeting group: 5.7 dB; P less than 0.05). The total improvement of hearing late after surgery (as compared to the preoperative hearing) was significantly better in the paraffin group than in ears with Silastic sheeting (P less than 0.05). Paraffinplasty seems to be a suitable way to avoid tympanic adhesions.

Adolescent↗
PubMed1982

The preoperative state of infection in chronic otitis media correlated with postoperative hearing results.

The postoperative long-term hearing results, with special reference to the state and management of the tympanic mucosa at operation, in 627 ears (574 patients) after an annual clinical follow-up period of 5-14 years are presented. The ears were operated on radically due to chronic otitis media, using the obliterative radical operation technique developed by T. Palva. The air-bone gap improved from the preoperative level significantly more in ears where the tympanic mucosa had been preserved than in ears where it had been removed at operation (p less than 0.001). The improvement was also significantly better in dry ears than in ears which were moist or discharging at operation (p less than 0.05). The mean late deterioration in the air-bone gap after the first follow-up year was significant in all the groups of ears (p less than 0.05), and the mean long-term change in air-bone gap from pre- to late postoperative examination was the improvement of 3.0 dB in ears with, and a deterioration of 2.0 dB in ears without ossicular reconstruction.

Adolescent↗
PubMed1985

The influence of masking on the ipsi- and contralateral brainstem evoked potential.

We have examined clinically and experimentally the masking effects of white noise in registering brainstem evoked potentials and determining the Jewett-wave V. We studied input-output functions as well as latency periods of evoked potentials with masking of non-stimulated contralateral ears in 18 children aged 5-14 years. When differences of 50 dB or more were found between stimulation and masking, the Jewett-wave V could be partially suppressed. Other changes observed included alterations in potential and phase, as well as shifts in the latency period of the potentials. The clinical importance of the measurements determined indicates that findings may be used in examining patients with unilateral sensory hearing impairments to formulate possible differential diagnoses.

Adolescent↗
PubMed1989

[The effect of music in discothèques on hearing ability].

The risk of hearing loss due to exposure to music in discotheques is discussed on the basis of VDI guideline No 2058, Bl 2. The hypothesis of a relationship was investigated in two empirical studies. In 204 pupils aged 13-19 years, a positive statistical relation of the 4 kHz hearing threshold on the music-hearing habits reported was observed. The difference between the extreme groups of noise exposure was approximately 4 dB (p less than 0.05) on a group average. The evaluation of audiograms of 3133 youths aged 16-20 years applying for a job performed during the medical tests required for employment, showed that those young people with a striking internal ear hearing loss of greater than 30 dB in the area of the C5 depression had spent significantly more time in discotheques than those without striking findings.

Adolescent↗
PubMed1997

Altered immunoregulations in otosclerosis: presence of autoantibodies in otosclerotic sera samples.

A current concept of the etiopathogenesis of otosclerosis is an immune response. The purpose of this study was to determine if autoantibodies were present in sera samples from patients with known otosclerosis. Organ non-specific total antinuclear antibodies (tANA) were determined in 98 sera samples by the immunofluorescent method in 47.9% of otosclerotic patients versus 5% in controls. The most frequent specific antinuclear antibody was antibody to native deoxyribonucleinic acid and antibody to ribonucleoprotein. Tissue-specific antibodies to native-collagen type II molecule (ACA II) were determined by counter-immunoelectrophoresis in the same sera samples and were detected in 54% versus none in healthy sera. There was no correlation between the presence of these two autoantibodies. In patients with tANA present, a statistically significant depletion of cochlear function was noted. The presence of ACA II showed no connection with hearing loss. The present study showed some alteration in immunoregulatory markers in otosclerotic patients and the possibility that ANA may play a role in the pathogenesis of otosclerosis-induced perceptive deafness.

Acoustic Impedance Tests↗