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Biomedical subjects

W Sułkowski

Publications and source records attributed to W Sułkowski.

60 records · Page 4Linked to original sources
PubMed1979

[Ear protective plugs].

The authors present results of studies of application of polyurethane foam to produce individual sound-absorbing ear plugs. In addition to physico-mechanical properties of the foam, the authors present its optimum prescribed composition, ensuring appropriate attenuation qualities, flexibility, softness and long -- lasting strain relaxation -- i.e. the conditions resulting in excellent filling of external auditory meatus, masking effect and utilization comfort. The efficiency of attenuation of sounds by the plugs, tested audiometrically by the method of auditory threshold shift in otologically healthy subjects ranges from 12.25 dB (250 Hz) to 29.75 dB (4000 Hz). No significant inflammatory reactions in external ear skin were found after 8 hrs of continuous wearing of ranges under the work conditions typical for the textile industry. The results demonstrate that the polyurethane foam, developed by the authors, are valuable ear protectors, of advantageous functional qualities.

Ear Protective Devices↗
PubMed1979

[Respiratory tract in workers chronically exposed to cement dust].

175 men working at productive divisions of a cement plant (average age 39,5 years +/- 8.3, average duration of employment 9.3 years +/- 4.8) and 50 controls (average age 38.7 +/- 11.9 and average duration of employment 10.7 +/- 10.0) were examined. The survey involved: a complex evaluation of respiratory tract, including internal, radiological, spirographic, gasometric and capnographic examinations. The results demonstrated chronic bronchitis in 17% of cement plant workers and in 10% of controls. Qualitatively, chronic bronchitis was more advanced in cement plant workers. Chronic bronchitis prevalence increased with duration of work in exposure to cement dust. Chest radiograms gave no cause for diagnosing pneumoconiosis in any case. Mean values of dynamic spirographic indices were lower than in controls, the differences were, however, statistically insignificant. Instead, the mean values of partial pressures of carbon dioxide and oxygen were statistically significantly lower, than those in controls, though they did not differ much from normal values.

Bronchitis↗
PubMed1979

[Respiratory indicators after laryngectomy].

35 males aged 48--65 were spirometrically examined prior to treatment and following an operation. Excision of neoplastic larynx and tracheostoma breathing were found to result in defected lung ventilation. The defected lung ventilation depends on the size of neoplastic infiltration and its location, but primarily on the degree of narrowing of larynx lumen.

Aged↗
PubMed1978

[Diagnosis, prophylaxis and certification of occupational hearing loss].

The paper includes some methodical guides for the physicians dealing with hearing protection in noisy industry and diagnosis and certification of occupational hearing loss. The Polish norm PN-77 N-01310 concerning the damage risk criteria, permissible levels of noise on work-posts, role and damping qualities of ear protectors as well as principles pre-employment and follow-up medical examinations are discussed. Apart from the frequency of audiometric tests the author lists in detail the standard conditions of the performance of these tests and their methodology. Then such problems are presented as the clinic of noise-induced hearing impairment, diagnostic criteria and criteria of certification, differential diagnosis and principles of evaluating capability for work in case of those suffering from hearing loss of various degree.

Hearing Loss, Noise-Induced↗