[Features of the coefficient of variation of hematological indicators in persons of middle, elderly and senile age with pneumonia.].

Pneumonia is the leading mortality rate among all infectious diseases. It has been established that the reliable risk group for morbidity and mortality from this nosology includes persons over 60 years of age, and with age the severity of the disease only increases. According to literary data, one of the reasons for the decline in adaptation capabilities of older persons is the phenomenon of «age desinhronosis», which manifests itself in significant fluctuations in the parameters of the internal environment of the body. The purpose of this work was to compare the coefficients of intra- and interindividual biological variation. For this purpose, a retrospective study of clinical blood analysis in patients suffering from pneumonia of unspecified etiology was carried out in terms of three age groups: medium, elderly and senile. Features of biological variation depending on age have been found, the differences identified have been justified according to available theories.