[Dynamic blood viscosity in selected respiratory system diseases]

The dynamic viscosity of blood was examined in 90 persons with different pulmonary diseases ill and in 56 with a normal state of health. Age was found not to have any effect on blood viscosity both in the male and female members of the control group, whereas in women aged below 40 blood viscosity was lower from that in men both before and after 40. Blood viscosity in women after 40 did not differ from blood viscosity in men, which may be explained by the effect of hormonal factors on blood viscosity in women. In the group of ill subjects, blood viscosity values were found to be increased to various degree; the highest values of that parameter were found in persons with lungs cancer. These values depended on blood protein disturbances found in that group, especially on the high concentration in blood of fibrinogen and gamma, alfa 2 and alfa 1 globulins.