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Biomedical subjects

F M Tonning

Publications and source records attributed to F M Tonning.

17 recordsLinked to original sources
PubMed1986

Unilateral sensorineural hearing loss in children less than 15 years of age.

1-10 years after the first examination, 56 children below 15 years of age with unilateral sensorineural hearing loss were re-examined with a test-battery consisting of puretone and speech audiometry, stapedius reflex tests, caloric tests, brainstem response audiometry and otoneurological tests. In no case was an acoustic tumour suspected on the basis of the test results. A small progression of the hearing loss occurred in only one ear. In no case did the healthy ears develop hearing loss during the observation period. Diagnostic procedures can in most of such cases be limited to pure-tone audiometry. Follow-up is indicated because some patients require advice considering education and evaluation regarding fitting of a hearing aid.

Adolescent↗
PubMed1984

Ventilating tubes in the middle ear. Long-term observations.

This follow-up study is of the same patients we studied in 1976. Then we thought the results were unsatisfactory in 20.9% of the ears treated with ventilating tubes. The hearing losses varied from 25 to 60 dB and chronic otitis media developed in 7.7% of the cases. We think the results of treatment with ventilating tubes in chronic serous otitis media are not good enough. This study shows that there has been an increase in the number of patients with permanent hearing loss and chronic otitis media than in the first study.

Adolescent↗
PubMed1978

Evaluation of hearing aid fitting based on the patients' experiences from everyday listening conditions.

We found that a relationship existed between degree of sensorineural hearing loss and discrimination score obtained in free field with convenient hearing aids against background noise. However, the standard deviation was so great that we could not elaborate a diagram from which, with any reasonable degree of accuracy the expected discrimination score with suitable hearing aids could be predicted for each individual patient. Then 20 patients with sensorineural hearing losses tried different hearing aids under everyday listening conditions, and simplified speech audiometry against background noise was performed. We found that none of the patients achieved better discrimination scores with aids they rejected under everyday listening conditions than with aids they preferred. This indicates that we need to pay attention to the patient's experience with hearing aids under everyday listening conditions in each individual case, when a hearing aid is to be selected.

Adult↗
PubMed1976

Ventilating tubes in the middle ear.

One hundred children from 1 to 14 years of age had serous otitis media, the manifestations of which were bilateral in all but four patients. Thus, 196 ears were treated with aeration of the middle ear by means of a short transmyringeal tube. The mean duration of the treatment was 3.4 years, and the mean observation time was 7.3 years. Of the ears treated, 79.1% regained normal hearing, though scarring of the tympanic membrane and smaller adhesions were observed. The result was not satisfactory in 20.9% of the ears treated, the hearing losses varying from 25 to 60 dB. In 7.7% (15 ears) chronic otitis media developed; in 5.6% (11 of the 15 ears) cholesteatoma was confirmed surgically. Adhesive processes were present in 11.2%.

Adolescent↗
PubMed1975

Auditory localization and its clinical applications.

Factors of significance in the localization of sound are considered. The ability of hearing-impaired subjects to localize noise in the horizontal plane was examined with and without hearing aids, and also compared with the results for normally hearing subjects. The directional hearing was not found to be improved by the hearing aids used. The ability to localize sound has been used by several investigators as a diagnostic tool: poor directional hearing may be expected in patients with lesions of the cochlear nerve or the pontine region. However, other factors are also of significance and may impair the localization of sound. These problems are discussed.

Acoustic Stimulation↗
PubMedDate not supplied

The reliability of level-diagnostic examinations in acute, peripheral facial palsy.

In acute non-traumatic peripheral facial palsy where the cause is not known, it does not seem to be justified to draw conclusions as to how far to the centre in the course of the nerve the lesion may be located, based on an examination of tear secretion, stapedial reflex, and taste. This is demonstrated in two cases.

Acute Disease↗