Relationship between hyperaemic response and viscoelastic properties in the coronary circulation of the dog.
A sudden reduction in perfusion pressure evokes a transient hyperaemic response in the coronary arteries of anaesthetized dogs; its characteristics depend on the vasomotor tone. A heuristic model, which mimics the vascular bed with a lumped second-order system on the lines of the well-known Windkessel model, but accounting for the blood inertia, is proposed to describe that response and to quantify the viscoelastic properties of the system.
Guiot
C
C
Dipartimento di Anatomia e Fisiologia Umana dell'Università di Torino, Italy.
Losano
G
G
D000818:Animals; D001794:Blood Pressure / Q000502:physiology; D003250:Constriction; D003326:Coronary Circulation / Q000502:physiology*; D003331:Coronary Vessels / Q000502:physiology*; D004285:Dogs; D006940:Hyperemia / Q000503:physiopathology*; D009129:Muscle Tonus / Q000502:physiology; D009131:Muscle, Smooth, Vascular / Q000502:physiology*; D014628:Vagotomy; D014655:Vascular Resistance; D014661:Vasoconstriction / Q000502:physiology*; D014664:Vasodilation / Q000502:physiology*