[QT Interval in Patients With COVID-19].

Since the first case recorded in the end of 2019, the virus SARS-CоV-2 and the related lung disease COVID-19 have spread over the world and became a threat for public health. The drugs used for treatment of this disease (azithromycin and hydroxychloroquine) can prolong the QT interval on the electrocardiogram to increase the risk of pirouette tachycardia and sudden cardiac death. This article presents a review of potential risks related with the drug treatment of COVID-19 and provides recommendations for management of patients during the pandemic.

[Prediction of life expectancy for prostate cancer patients based on the kinetic theory of aging of living systems].

The article presents a methodical approach for prediction of life expectancy for people diagnosed with prostate cancer based on the kinetic theory of aging of living systems. The life expectancy is calculated by solving the differential equation for the rate of aging for three different stage of life - «normal» life, life with prostate cancer and life after combination therapy for prostate cancer. The mathematical model of aging for each stage of life has its own parameters identified by the statistical analysis of healthcare data from the Zharinov's databank and Rosstat CDR NES databank.

[Description of aging dogs and fruit flies based on the kinetic theory].

The aim of the study is to assess the adequacy of model representations, accepted in the kinetic theory of aging of living systems, the analysis of the experimental data obtained on dogs and fruit flies. The work is illustrated by applying the need to develop a mathematical model of the kinetic theory of aging to describe the probability density of death, probability of death, the average duration of life of the considered biological systems in the natural conditions of existence, as well as for dogs with limited time and chronic RA-diciannove impact, and for Drosophila - high external temperature. Op-defined kinetic equation of aging and their parameters.