[Peculiarity modification mechanical property of a pulmonary tissue in the period of physiological pregnancy].

In the period of pregnancy are reduced elastic of property of a pulmonary tissue. More than in 2 times is enlarged an extensibility, as at the expense of participation of the surface active agents, and some factors of parenchyma. The conditions for augmentation of the size of alveolus's, delay in them of air and infringement of a bodily machinery of respiration are framed.

[The specific features of diagnosis of latent small airway obstruction].

Latent obstruction of the small airway is a preclinical stage of chronic obstructive pulmonary disease (COPD), has no specific signs and it is a risk factor of respiratory failure. Its mechanism is unknown; it is likely to be caused by rearrangement of lung tissue, its increased hydrophicility due to the influence of various endogenous factors, which ultimately causes a change in the mechanical omechanics. The new sensitive functional integral index (the latent small airway obstruction coefficient) has been proposed for timely diagnosis.