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Biomedical subjects

M Taniewski

Publications and source records attributed to M Taniewski.

At least 19 recordsLinked to original sources

Application of regression analysis to examination of degree of loss of hearing.

The present study is an attempt to apply analysis of regression for the purposes of evaluation of loss of hearing. This method consists in calculating equations of regression for relation between the age of the examined people and the degree of elevation of the hearing threshold for various frequencies. The slope of the regression line allows to conclude about the degree of damage to hearing. Practical application of this method was shown with an example of a study on the status of hearing in workers of several manufacturing departments of a pottery plant.

Adult↗

[Vestibulo-spinal and vestibulo-ocular reflexes in athletes].

There have been done tests of vestibulo-spinal et vestibulo- ocular reflexes at record-seeking sportsmen. At 141 sportsmen the vestibulo-spinal reflexes were tested by Unterberger-Fukuda stepping test in modification of Zilstorff-Pedersen and Peitersen. The angle of rotation (a), the distance of translocating to front or back (b) and the distance of sideward translocation (c) were estimated. The test was also done at 194 persons not playing sport. Comparing the average results of both groups the conclusion was drawn that sportsmen are characterized by lesser translocation of body within the range of all parameters of test, and differences of average are statistically substantial at the level of trust p = 0, 001. The vestibulo- ocular reflexes were tested at 62 sportsmen by caloric test by method of Fitzgerald-Hallpike with electronystagmographic registering of nystagmus. The control group consisted of 30 persons not playing sport. The following features of nystagmus were estimated: duration time, maximum frequency, maximum amplitude and maximum angular velocity of the slow phase. The sportsmen were characterized by average lesser calorie excitability of labyrinth, although the differences between the tested groups were statistically substantial only within the range of some features of nystagmus.

Adolescent↗

Noise in the workplace and audiometric examinations in workers of a ceramic factory.

732 workers from several loudest production departments in a pottery plant were examined. The noise level measurements were carried out at a regular course of work. Auditory sensitivity threshold was determined via air conduction, at frequencies of 250, 500, 1000, 2000, 4000 and 8000 Hz. Functioning of the organ of hearing under conditions of noise at the workplace was analysed. The influence of several noise levels--up to 85 dB/A/ and higher, and the relation between the length of service and hearing sensitivity threshold were investigated. The largest exposures were recorded in the batching and milling plant, sorting and kilns departments.

Ceramics↗

[Effectiveness of ear protective devices].

Efficiency of 9 types of hearing protectors was investigated. A subjective method of an absolute hearing threshold shift in free sound field in 20 well-hearing-persons was applied. The results obtained are presented in figures. It was found that the maximum efficiency of most hearing protectors usually fell toon the frequency of 4000 Hz and amounted to 20--41 dB. The minimum efficiency usually fell to the frequency of 125 Hz and amounted to 8--21 dB. Attenuation efficiency of broad-band noise was 18-40 dB and approximated the maximum efficiency of pure sounds, sometimes even surpassing it. The results of determinations differed from the values given by manufacturers, which accounts for the need of undertaking such investigations.

Ear Protective Devices↗

[Nasal and pharyngeal mucous membrane in workers of artistic weaving plants].

68 persons employed at the production of fabrics from wool and flax, have been subjected to otolaryngological examinations. Chronic atrophic catarrh of mucous membrane of nose and pharynx was found in all 8 persons employed in tapestry weaving mill and in 44 among 60 employees of a weaving mill operated manually. Atrophic changes occurred most frequently both in the nose and the pharynx, less frequently only in the nose, and the least frequently only in the pharynx. Chronic atrophic catarrh of upper respiratory tract mucous membrane was found to be more frequent among those with the length of employment above 5 years than those with shorter employment, though this difference was not statistically significant. No correlation was found between the occurrence of chronic catarrh of upper respiratory tract and hearing damage.

Adolescent↗