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Biomedical subjects

Iu V Levina

Publications and source records attributed to Iu V Levina.

13 recordsLinked to original sources
PubMed2006

[Acoustic and vestibular analysers in patients with mine explosion trauma].

The aim of the study was examination of the acoustic and vestibular functions in patients with mine explosion trauma. Acoustic and vestibular functions were studied in 27 patients (16 females and 11 males aged 19-66 years, mean age 37.2 +/- 4.12) admitted to the ENT clinic of Moscow city hospital N 1. All the patients had suffered from explosion in closed space. General clinical and complex otoneurological examinations were made including gustatory and olfactory investigations, studies of the facial skin sensitivity, nasal mucosa, corneal reflex, soft palate motility, audiometry and vestibulometry. The findings of the tests suggested the following conclusions: mine explosion damages hearing by impairment of both sound conduction (85.7%) and sound perception (61.2%), the latter suffering primarily at the cochlear level; damage to the cranial nerves V and XIII occurs at the level of the brain stem; mixed affection of the vestibular analyzer is seen primarily at the level of stem nuclei.

Adult↗
PubMed2005

[Psychosomatic status of patients with cochleovestibular disorders. Correction methods].

Psychosomatic status was studied in 106 patients aged 18-65 years with acute and chronic cochleovestibular disorders. Hearing problems, noise in the ears and vestibular disorders have a negative psychogenic effect in patients with cochleovestibulopathy. The majority of the patients need psychological and psychopharmacological care to relieve anxiety and form adequate attitude to the disease. Correction of psychosomatic disorders raises efficacy of the treatment of cochleovestibular diseases.

Adolescent↗
PubMed2005

[Audiological diagnosis of cochleovestibular disorders caused by internal ear hydrops].

A total of 75 patients with clinical signs of internal ear hydrops (IEH) were examined using dehydration tests and electrocochleography. The patients were divided into groups by the results of pure tone threshold audiometry according to the international classification. Both methods proved highly informative. Positive dehydration tests were obtained in 57% cases, positive electrocochleography evidence was observed in 73% cases. An increased SP/AP amplitude was seen in 65% cases. Both methods allowed IEH detection in 82% cases. In normal hearing and hypoacusis of the first degree electrocochleography is more effective than dehydration tests in detection of IEH, but with hearing loss deterioration this advantage lessens. It is shown that patients can suffer from IEH in normal values of pure tone threshold audiometry. This should be taken into consideration in examination of patients who do not complain of hypoacusis.

Adult↗
PubMed2004

[Evoked otoacoustic emission in conduction of dehydration tests in patients with Meniere's disease].

We studied potentiality of the test of evoked otoacoustic emission (EOAE) for monitoring of dynamic changes in the internal ear in conduction of dehydration tests. In parallel to registration of tonal hearing thresholds and speech intelligibility in conduction of dehydration tests we registered two classes of EOAE: delayed EOAE (DEOAE) and distortion product otoacoustic emission (DPOAE). Of 36 examinees, we registered DEOAE prior to dehydration in 22 patients. By audiometry, these patients had hearing under 40 dB lower the hearing threshold at frequencies 250-4000 Hz. In registration of DEOAE in dynamics a maximal amplitude increase was seen 2 hours after intake of glycerin. A mean amplitude increase was 7.0+/-2.3 dB. Before dehydration DEOAE was recorded in 26 of 36 patients. Two hours laser otoacoustic response was registered in 29 patients. Hearing loss was not more than 60 dB at frequencies 250-4000 Hz. A maximal amplitude increase was seen in 2 hours. A mean amplitude increase in dehydration was 7.3+/-3.7 dB.

Adult↗
PubMed2003

[Dissection of endolymphatic duct in Meniere's disease].

The authors believe that endolymphatic sac (ES) surgery produces the highest and most persistent effect in comparison with all other surgical interventions in Meniere's disease (MD). Conventional views on the mechanisms underlying a beneficial effect of the ES surgery are revised and a new surgical technique is proposed. A positive effect of the operation, according to the authors, depends not on ES decompression but on the ES break taking place in separation of the dura mater from the bone skull in the outlet area of the aqueduct of the vestibule (AV). When the AV is separated from the sac, a rise in endolymphatic pressure is relieved by the endolymph pushing through the AV as it is not connected with the ES. 10 year follow-up has shown that this technique excludes subsequent endolymphatic hydrops.

Endolymphatic Duct↗
PubMed2003

[Age-related aspects of pure tone threshold in extended band by air].

In addition to registration of pure tone threshold audiometry in the standard frequency band and acoustic impedance audiometry, tone hearing thresholds were registered conventionally in extended frequency band (9-20 kHz) by air. A total of 103 otologically healthy volunteers (206 ears) aged 14 to 67 years participated in the trial. The results can serve as the standard in examination patients with pure-tone threshold audiometry by air in extended frequency band.

Adolescent↗
PubMed2003

[Erespal effectiveness in exudative otitis media].

Standard conservative treatment of exudative otitis media (EOM) was performed in 82 patients, but 44 of them received adjuvant fenspiride (erespal) in a dose 80 mg per os 3 times a day for 10 days. Dynamic pure tone audiometry, tympanometry and subjective response demonstrated higher treatment efficiency in the erespal group. Therefore, it is recommended to include erespal in combined conventional therapy of EOM.

Adolescent↗
PubMed2002

[Diagnostic implications of examination of the middle ear resonance frequency].

Resonance frequency of the middle ear was examined in 24 persons with normal hearing, 10 patients with otosclerosis and 4 patients subjected to stapedioplasty. It is shown that shift of the resonance frequency is important for differential diagnosis. In particular, in otosclerosis resonance frequency shifts to higher values, while in mass increases (rupture of acoustic bones chain) there is a shift to lower frequencies.

Acoustic Impedance Tests↗
PubMed2001

[Age-specific changes of evoked otoacoustic emission of different classes].

In different age groups of healthy subjects we registered two classes of evoked otoacoustic emission (OAE): delayed evoked OAE and OAE at the frequency of fault product. The findings show progressive decline of the amplitude of the otoacoustic response in subjects aged over 30-40 years. It is evident that sensor cells of Corti's organ may alter as early as over 30 years of age.

Acoustic Stimulation↗
PubMed1999

[The application of otoacoustic emission registration in the diagnosis of Meniere's disease].

32 patients with Meniere's disease (MD) were examined audiologically in the trial of diagnostic potential of otoacoustic emission (OAE) method. Two classes of OAE were registered: delayed evoked otoacoustic emission (DEOAE) and otoacoustic emission at the frequency of the distortion product (DPOAE). DEOAE in MD patients is recordable in tonal hearing reduction to 50 dB, DPOAE--to 65 dB. Amplitude of both these otoacoustic emissions in normal ear (hearing tonal threshold under 20 dB) of MD patients was significantly less than in control patients with normal hearing. OAE can be added to diagnostic tools for examining structures of the internal ear in MD.

Adult↗