[Attempt at early detection of coronary insufficiency in patients with diabetes mellitus].

The upper extremity cooling test has been used for early detection of coronary insufficiency in 149 patients with diabetes mellitus and hypertension aged 40 to 60 years and electrocardiograms were evaluated prior and after the test according to the Minnesota Code. Additionally, in 49 subjects of above group the positive effort test has been performed revealing positive result in 22%, 4% exhibited the positive cooling test. In the group of 100 persons with arterial hypertension in whom the effort test has not been performed the positive cooling test has been noted in 6%.

[Effect of mechanical vibrations and noise on creatine kinase activity in workers].

In two groups of workers exposed to vibration and noise exceeding allowable standards within 3 to 30 years for over 4 hrs daily, the activity of creatine kinase-test enzyme for the diagnosis of muscular diseases and traumata was evaluated. Both in group I, composed of 74 workers aged 21-51 (38 on average) topically exposed to mechanical vibrations and noise, and in group II, composed of 45 workers aged 25-51 (37 on average), with topical or whole-body exposure to mechanical vibrations CPK was found to be significantly increased as compared to controls--26 workers carrying on medium (i.e.

[Health status of workers in polyvinyl chloride processing plants. I. Evaluation of occupational exposure. Subjective and capillaroscopy studies. Conduction velocity in the motor nerves].

The examinations covered 255 workers of two polyvinyl chloride processing plants. All workers were subject to general medical examinations including electrocardiography. In a part of workers employed in the plant located in the Katowice Voivodeship, the dermatological tests and neurological examinations including testing the velocity of conduction in motor nerves were carried out and the selected group was subject also to capillaroscopy and dermatothermometry.

The effect of mechanical vibration and industrial noise on the behaviour of blood serum immunoglobulins and on the lymphocyte blastic transformation.

The investigations have been undertaken to determine the effect of mechanical vibration on the behaviour of blood serum immunoglobulins and on the lymphocyte blastic transformation. The concentrations of IgA, IgG, IgM have been determined with 174 workers of metallurgical plants who were exposed to both vibration and noise, and with 50 workers exposed to noise only. The lymphocyte blastic transformation has been determined with 70 workers exposed to both vibration and noise.