[The dependence of the hemodynamic shifts in the systemic arterial and venous vascular beds on the degree of change in the arterial pressure under the action of vasoactive substances].
The participation of hemodynamic parameters in formation of systemic pressor displacement due to action of norepinephrine and angiotensin was shown in acute experiments in cats. An arterial pressure rise by 15 +/- 2% and 25 +/- 3% depended on total peripheral resistance and cardiac output enhancement. The maximal arterial pressure rise only depended on total peripheral resistance increase. The reduction of venous return resulted from a decrease of the blood flow in v. cava posterior whereas the blood stream in v. cava anterior increased. Depressor actions of acetylcholine and histamine were enhanced owing to a fall in the vessels resistance.
Lioznov
M V
MV
Samoĭlenko
A V
AV
Iurov
A Iu
AIu
D000109:Acetylcholine / Q000494:pharmacology; D000804:Angiotensin II / Q000494:pharmacology; D000818:Animals; D001794:Blood Pressure / Q000187:drug effects* / Q000502:physiology; D001808:Blood Vessels / Q000187:drug effects* / Q000502:physiology; D002415:Cats; D005260:Female; D006439:Hemodynamics / Q000187:drug effects* / Q000502:physiology; D006632:Histamine / Q000494:pharmacology; D008297:Male; D009638:Norepinephrine / Q000494:pharmacology; D014662:Vasoconstrictor Agents / Q000494:pharmacology*; D014665:Vasodilator Agents / Q000494:pharmacology*
D014662:Vasoconstrictor Agents; D014665:Vasodilator Agents; D000804:Angiotensin II; D006632:Histamine; D000109:Acetylcholine; D009638:Norepinephrine
Zavisimost' gemodinamicheskikh sdvigov v sistemnom arterial'nom i venoznom sosudistom rusle ot stepeni izmeneniia arterial'nogo davleniia pri deĭstvii vazoaktivnykh veshchestv.