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Biomedical subjects

S I Chernobel'skiĭ

Publications and source records attributed to S I Chernobel'skiĭ.

14 recordsLinked to original sources
PubMed2005

[Clinicofunctional assessment of treatment results in patients with unilateral laryngeal paresis by the method of multiparameter acoustic analysis of the voice].

Acoustic characteristics of the voice were compared in 10 women with unilateral paresis of the laryngeal nerve before and after treatment. Twenty healthy women served control. A special computer program calculated the following parameters: fundamental frequency, sound pressure level, jitter, shimmer, long-term average spectrum, signal to noise ratio. It was shown that improvement of vocal cords contact after phonopedy was associated with improvement of all acoustic voice parameters. Thus, acoustic voice analysis is a good method of voice assessment before and after the treatment. This method is applicable in research and clinical practice.

Adult↗
PubMed2005

[The use of real time visual feedback in the treatment of patients with increased fundamental frequency of voice].

To correct fundamental frequency (FF) in five juveniles with puberphonia and in five women with functional dysphonia, we used visual computer feedback (musical soft Circ FFT, Svante Granqvist). Visual computer control over FF alterations facilitated the above correction. This method is an additional tool to the armory of therapeutic measures to correct FF. It is especially useful for persons with tin ear.

Feedback↗
PubMed2005

[The use of voicing test in phoniatrics].

A study was made of the voicing-test efficacy in clinical practice. The study group consisted of 11 patients with different laryngeal diseases, the control group comprised 40 healthy subjects. Two parameters were estimated with a special computer soft: fraction of locally unvoiced pitch frames (FLUPF) and degree of voice breaks (DVB). Jitter, shimmer and signal to noise ratio were estimated as control. It is shown that the presence of locally unvoiced pitched frames is abnormal. The FLUPF test proved more precise than DVB test and, therefore, is preferential. Thus, the FLUPF test is clinically significant and can be used in clinical practice in line with parameters of acoustic analysis.

Female↗
PubMed2002

[Vocal nodules in professional singers of classical style].

Whether physiologically correct singing promotes disappearance of vocal nodules (VN) was studied in 27 professional classic style singers having VN for 20 years. VN arose primarily in women, tended to recur. As shown by examination with laryngostroboscope, electroglottograph and sound level meter, physiologically correct singing resulted in temporary disappearance of soft nodules but hard nodules did not resolve. It is inferred that professional singing is not recommended for subjects with hard vocal nodules.

Adolescent↗
PubMedDate not supplied

[Electronic glottography (clinical aspects)].

In order to study the application of electronic glottography in clinical laryngology, 200 patients with different diseases were examined, using a glottographic unit, computer, oscilloscope, and a recorder. It was found that glottography is an objective method which can be applied to evaluate and detect disorders of vocal folds in different states. This method fails to determine the vibration capacity of an individual fold or diagnose laryngeal lesions without an additional examination.

Adolescent↗
PubMedDate not supplied

[Differential diagnosis of unilateral paresis and paralysis of the larynx].

Differential diagnosis of laryngeal paresis and paralysis using electron glottography (EGG) was tried in 57 patients and 30 healthy controls. Measurements were made of speed quotient (SQ) and open quotient (OQ) at piano and forte. It was found that in patients and controls SQ and OQ were not similar. SQ and OQ differed also in paralysis and paresis. Tonicity of the inner laryngeal muscles seems to decline more in paralysis than in paresis. Aerodynamic properties of the larynx are damaged more in paralysis and remain unchanged in paresis. Reduced SQ and high OQ at forte indicate unilateral laryngeal paralysis. OQ should be measured both at piano and forte. Thus, EGG is an effective procedure for differential diagnosis of laryngeal paralysis and paresis. It is especially convenient when laryngostroboscopy is problematic.

Diagnosis, Differential↗