[The correlation of the different mechanisms of adaptation of the circulatory system to hypovolemia in ontogeny].
It was established in experiments on narcotized adult cats and pigs of different age that postnatal mammal development is characterized by the presence of a period of the smallest resistance to massive blood loss (33% of circulating blood volume) when the ability for fast spontaneous restitution of plasma volume is already lost but the mechanism of increasing resistance of peripheral vessels to hypovolemia for support of perfusion pressure of adult mammal is still weak.
Dzhurko
B I
BI
Krylov
M K
MK
D000222:Adaptation, Physiological; D000375:Aging / Q000502:physiology*; D000818:Animals; D001775:Blood Circulation / Q000502:physiology*; D002415:Cats; D006439:Hemodynamics; D006470:Hemorrhage / Q000503:physiopathology; D020896:Hypovolemia / Q000503:physiopathology*; D013552:Swine; D013997:Time Factors