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Biomedical subjects

I Sejna

Publications and source records attributed to I Sejna.

12 recordsLinked to original sources
PubMed1991

[Hearing and treatment of neonates with gentamycin].

The authors examined two groups of children treated during neonatal period with high doses of Gentamycin. The reasons for Gentamycin treatment at the intensive care unit were infection of the CNS, pneumopaties, intracranial haemorrhagiae, cerebral oedema and other causes. The first group of children was treated in 1981, the second one in 1986. Both groups were examined in 1987. All children were evaluated to objective hearing tests, impedance audiometry by acoustically evoked potentials of the brain stem. Children of the first group examined during their fifth or sixth year were also submitted to a hearing test. The control group was formed by children born in 1986 treated at the intensive care unit with similar indications but who were not given Gentamycin. A total of 51 children were examined. Twenty-two children examined at the age of five had no hearing impairment. Acoustically evoked potentials of the brain stem have a wide variability which may be the manifestation of the disease which led to admission to the intensive care unit. Therefore it should be conceived as a screening examination and the revealed pathological findings should be verified by repeated examinations. Possible hearing disorders should be confirmed at a later age by conventional examinations.

Audiometry, Evoked Response↗
PubMed1990

[Treatment of tinnitus by Neolidocatone administered by iontophoresis into the middle ear].

The authors describe a possible therapeutic approach mitigating tinnitus. It is not causal treatment but only symptomatic and extends the group of methods which influence tinnitus. The authors describe their own experience with iontophoresis of the middle ear with Neolidocatone-a derivate of Lidocaine which was done with a SANOMATIC apparatus, using galvanic current 1.5 mA. In one third of the patients it proved possible to mitigate the tinnitus permanently, in the remaining patients it persisted in the original intensity. The group of patients was heterogeneous from idiopathic tinnitus without impaired hearing, patients with otosclerosis, cervicocranial syndrome to those with Ménière's disease. The cause of tinnitus did not influence the therapeutic results.

Ear, Middle↗
PubMed1990

[The tensor tympani muscle reflex in nasopharyngeal carcinoma].

The initial stages of carcinoma of the nasopharynx may be manifested by different types of impaired hearing. The Eustachian tube may be obstructed by a tumour or its orifice compressed, sometimes the tumour penetrates into the middle ear. The authors discuss the position which may develop in infiltration of the semicanalis m. tensoris tympani and how functional disorders of this muscle may be manifested. They describe the provoked reflex of this muscle by trimolar acetic asid and investigate tympanometric reactions of this artificially provoked contraction of the m. tensor tympani in patients with carcinoma of the nasopharynx.

Acoustic Impedance Tests↗
PubMed1989

[Adenectomy and the status of the middle ear].

By tympanometric examination before and after adenotomy the authors confirmed the favourable effect of adenotomy on the condition of the middle ear. A marked decline of the tympanograms type B, almost to the level of the control group provides evidence to this effect. In the control group formed by children from a nursery school a great variance of tympanograms and their spontaneous dynamics was demonstrated. The authors consider tympanometric examinations fully indicated in children after adenotomy. Based on repeated pathological tympanograms and other examinations, we can easily differentiate children with a chronic secretory catarrh.

Acoustic Impedance Tests↗
PubMed1987

[Diagnostic contributions to the tympanometric study of malignant nasopharyngeal processes].

Extensive studies in areas of high prevalence of nasopharyngeal carcinoma have demonstrated that the most frequent site of origin is Rosenmuller's fossa. Even a small tumour may cause changes in the lumen of the orifice of the Eustachian tube either because of compression or because of a growth of the tumour directly into the lumen of the tube. This causes various wellknown disorders which are frequent initial signs and symptoms of the disease. Initially, subjective symptoms and signs are not accompanied by objective pathological findings except for a pathological tympanogram. The present method of tympanometric examination offers the possibility of detection of several initial stages of nasopharyngeal carcinoma, and combined with nasopharyngoscopy proves to be a very useful complementary examination to serology, biopsy and molecular-biological methods.

Acoustic Impedance Tests↗