Stochastic Modeling and Dynamic Analysis of the Cardiovascular System with Rotary Left Ventricular Assist Devices

Table 1

Model parameters for the cardiovascular-LVAD system.

Circuit parameters	Value	Physiological Meaning
Resistance (mmHg∙s/ml)
Rs	1.0000	Systemic Vascular Resistance
RM	0.0050	Mitral Valve Resistance
RA	0.0010	Aortic Valve Resistance
Rc	0.0398	Characteristic Resistance
Ri	0.0677	Inlet Pump Resistance
Ro	0.0677	Outlet Pump Resistance
Rp	0.17070	Pump Resistance
Rk	See (1)	Suction Resistance; α = -3.5 s/ml and = 1 mmHg
Compliance (ml/mmHg)
C(t)	Time-varying	Left Ventricular Compliance
CR	4.4000	Left Atrial Compliance
Cs	1.3300	Systemic Compliance
CA	0.0800	Aortic Compliance
Inertances (mmHg∙s^2/ml)
Ls	0.0005	Inertance of Blood in Aorta
Li	0.0127	Inlet Inertance
Lo	0.0127	Outlet Inertance
Lp	0.02177	Pump Inertance
Valves (no units)
DM	/	Mitral Valve
DA	/	Aortic Valve