[The deformation-strength properties of the vertebral and common carotid arteries in fetuses and newborn infants].
General carotid and vertebral arteries of 51 corpses of foetuses and newborns with 28-40 weeks gestation were studied. The entire material was divided into 3 groups: 28-32 weeks, 33-36 weeks and 37-40 weeks. The thickness of the wall and its certain layers and connective tissue fibres architectonics were studied. General tensile strength, its limit, maximum relative deformation and the arterial wall Junge module were studied at longitudinal tension on ZM-40 tension machine. General carotid artery wall of foetuses and newborns is more tensile and has greater strength and less rigidity than that of the vertebral artery. The wall of the arteries studied has tensility reserve, safe for its structure in account of its fibroarchitectonics peculiarities. All the tensile strength parameters of the vessels investigated, with the exception of general carotid artery relative deformation, significantly change with the gestation increase. Tensile strength properties change depending on gestation term and body weight of foetuses and newborns may be approximated with linear function Y = A + B x X + C x Z (X--gestation term, Z--body weight).
Kalmin
O V
OV
D000704:Analysis of Variance; D017536:Carotid Artery, Common / Q000502:physiology*; D004548:Elasticity; D005333:Fetus; D005865:Gestational Age; D006801:Humans; D007231:Infant, Newborn; D012044:Regression Analysis; D013718:Tensile Strength; D014711:Vertebral Artery / Q000502:physiology*