[The effect of the amplitude and frequency of blood pulsations on the peripheral vascular tonus].
In acute experiments on cats, hindlimbs' skeletal muscles, small intestine, a lung's lobe or a kidney were perfused. The mean value of the perfusion pressure was constant. The increase in frequency of the perfusion pressure oscillations from 0.75 to 10 Hz, at a constant amplitude, entailed a weak increase in the resistance to blood flow in skeletal muscles. The increase in amplitude of the oscillations from 30-40 to 100-120 mm Hg induced an obvious vasodilation. Intestinal vessels revealed a biphasic shift in the resistance to blood flow whereas no changes occurred in lungs. The dynamic mechanical deformation of the blood vessels' walls seems to exert a different effect upon the circulation in different areas.
Nedoshivin
V P
VP
Dvoretskiĭ
D P
DP
D000818:Animals; D002415:Cats; D005260:Female; D006614:Hindlimb / Q000098:blood supply; D007421:Intestine, Small / Q000098:blood supply; D007668:Kidney / Q000098:blood supply; D008168:Lung / Q000098:blood supply; D008297:Male; D009132:Muscles / Q000098:blood supply; D010208:Papaverine / Q000494:pharmacology; D010477:Perfusion / Q000295:instrumentation / Q000379:methods; D011673:Pulsatile Flow / Q000187:drug effects / Q000502:physiology*; D012503:Saponins / Q000494:pharmacology; D014655:Vascular Resistance / Q000187:drug effects / Q000502:physiology*; D014664:Vasodilation / Q000187:drug effects / Q000502:physiology
D012503:Saponins; D010208:Papaverine
Vliianie amplitudy i chastoty pul'satsiĭ krovi na tonus perifericheskikh sosudov.