[Characteristics of pathogenesis of hypoxia in arterial hypertension in old age].

In 135 patients of advanced and senile age with essential hypertension hemodynamics and gas composition of the blood were investigated by the methods of the dye dilution after Stewart-Hamilton, Sechenov-van Slyke and micro-Astrup. The patients of this age category were found to suffer predominantly from the hemodynamic type of essential hypertension characterized by an increased cardiac ejection. Hypoxia develops chiefly after the hypoxic and tissular types. An increased cardiac ejection in patients of advanced and senile age with essential hypertension is considered to be a possible compensatory reaction to manifestations of hypoxia.