[Specificity of estimation and prognostic value of glomerular filtration rate in older age groups with cardiovascular pathology.].

The demographic situation in recent decades has been characterized by a progressive increase in the proportion of older age groups in both developed countries and the Russian Federation. The main contribution to morbidity and mortality of people over 60 years of age is made by diseases of the circulatory system. Early development and progression of cardiovascular diseases contributes to kidney dysfunction, often developing against the background of morphological changes occurring with age in the kidneys, called "senile kidney".

[Modern principles of the geriatric analysis in medicine].

The offered methodological principles of the geriatric analysis in medicine enables to plan economic parameters of social protection of the population, necessary amount of medical help financing, to define a structure of the qualified medical personnel training. It is shown that personal health and cognitive longevity of the person depend on the adequate system geriatric analysis and use of biological parameters monitoring in time. That allows estimate efficiency of the combined individual treatment.

[Effect of the pulse shape on electrostimulation of excitable tissues].

This paper is devoted to the consideration of the mechanisms of electrostimulation of excitable tissues used in remedial medicine. Community of biophysical principles underlying the Weiss-Lapique and Dubois-Reymond laws is emphasized. The action of stimulating pulses on biological tissues and its consequences are analysed with reference to their shape (rectangular, triangular, and exponential).

[Spatial vector electrocardiography: technique, perspectives of use].

Potentials of the use of computer synthesis of integral electrical vector of the heart D0 are described. Calculation of spatial angular vector velocity and linear velocity of its movement along trajectory can be carried out in a framework of biophysical dipole model. Spatial presentation of vector is realized and its behavior in accordance with established pathologies discussed.