Table 1 Model parameters for a normal adult human
Parameter | Value | Units | Description |
|---|---|---|---|
Resistances | Â | Â | Â |
Rs1 -- Rs9 | 10.3 | mmHg/(ml/sec) | Local systemic resistance |
Ri | 0.01 | mmHg/(ml/sec) | Pump input resistance |
Ro | 0.01 | mmHg/(ml/sec) | Pump output resistance |
Ra0, Ra2 -- Ra8 | 0.005 | mmHg/(ml/sec) | Aortic segment resistance |
Ra1, Ra9 | 0.1 | mmHg/(ml/sec) | Carotid and femoral resistance |
Compliances | Â | Â | Â |
Ca0 -- Ca9 | 0.13 | ml/mmHg | Compliance of an aortic segment |
Cv | 10 | ml/mmHg | Compliance of lumped venous reservoir |
Cp | 12 | ml/mmHg | Pump compliance in diastole |
Dimensions | Â | Â | Â |
SegLength | 5 | cm | Aortic segment length |
SegRadius | 1.5 | cm | Initial aortic segment inner radius |
VenousVol | 2000 | ml | Initial volume of lumped veins |
PumpVol | 200 | ml | Initial pump volume |
Knobs | Â | Â | Â |
frequency | 1.3333 | Hz | Cardiac frequency (heart rate) |
Pmax | 120 | mmHg | Maximal external pump pressure |
dt | 0.00001 | sec | Time step for numerical integration |
startprint | 1.5 | sec | Time at which output data start being plotted |
stopprint | 3 | sec | Time at which output data stop being plotted |
skipnumber | 99 | Â | Number of calculated points skipped between plotted points |
Pinit | 10 | mmHg | Initial equilibrium pressure of arrested circulation |