Clinical significance of the determination of surfactant proteins A and D in assessing the activity of lung sarcoidosis.

AIM: To study the clinical significance of SP-A, SP-D in assessing the activity of idiopathic pulmonary fibrosis and sarcoidosis. We examined 81 patients with morphologically confirmed diagnoses of idiopathic pulmonary fibrosis (ILF) and sarcoidosis, a control group of 20 healthy individuals. The MSCT of the thoracic organs of the chest was performed, the diffusivity of the lungs was examined, oxygen saturation was determined. In the serum, the surfactant proteins SP-A and SP-D were determined by the enzyme-linked immunosorbent assay. RESULTS: A significant increase in SP-A and SP-D (p<0.05) was observed in patients compared with patients in the control group, a direct correlation was found with signs of activity: SP-A with alveolitis (p<0.05), SP- D with progressive fibrosis (p<0.05), inverse correlation of surfactant proteins with respiratory function indices (p<0.05). CONCLUSION: Serological parameters of SP-A and SP-D reflect the activity of alveolitis and the progression of pulmonary fibrosis in patients with ILF and sarcoidosis.

[An electrocardiographic electrode for the extremities]. / Elektrokardiograficheskii élektrod dlia konechnostei.

A design of electrocardiographic electrode for extremities is described. It contains a double-sided grip (from the insulating material) in the form of a truncated ellipse with the ends smoothly diverged. The results of tests are adduced.

[Circulating blood volume meter]. / Izmeritel' ob''ema tsirkuliruiushchei krovi.

The article describes the functional diagram, calibration principle and operation of a new instrument, ur1-7. This device measures the volume of blood circulating in the organism by the radioisotope dilution method. The measurement range is from 1 to 9.9 1, with error not exceeding +/- 5%.