modelDiastole4
Information
The relationship heart rate(HR)-end diastolic volume(EDV) is represented by linear function -0.00247654 HR + 1.18574.
The coeficients was choosen to solve normal state and critical zero state: (Solve[{a*75 + b == 1, a*HR + b == 0, diastoleTime[HR] == 0}, {a, b}]).
It means the next ventricle filling model:
cardiac cycle time (T) = (60/HR) [s]
systolic contraction time (Ts) = (0.3*T^0.5) [s]
diastolic filling time (Tdf) = T - Ts - 0.18*Ts [s]
steady-state filling curve:
axes x .. filling time = Tdf [s]
axes y .. entered volume part = stroke volume (SV)/normal_SV [x 100 %]
EDV = SV + pre(ESV) = effect(HR) * ((EDV_without_HR_effect - pre(ESV)) + pre(ESV)
Parameters
| Type | Name | Default | Description |
|---|---|---|---|
| Real | stiffnes | parametrization of end diastolic volume curve | |
| Real | n_Diastole | parametrization of end systolic volume curve | |
| Real | Abasic_Diastole | parametrization of end diastolic volume curve |
Connectors
| Type | Name | Default | Description |
|---|---|---|---|
| Modelica.Blocks.Interfaces.RealInput | externalPressure | pericardium pressure around ventricle | |
| Modelica.Blocks.Interfaces.RealOutput | EDV | ||
| Modelica.Blocks.Interfaces.RealOutput | P | ||
| Modelica.Blocks.Interfaces.RealOutput | Stiffness | ||
| Modelica.Blocks.Interfaces.RealInput | HR | heart rate | |
| Modelica.Blocks.Interfaces.RealInput | preESV | previous end systolic volume |
Components
| Type | Name | Default | Description |
|---|---|---|---|
| Real[20,2] | iconPoint | ||
| Real[2,2] | iconActualPoint | ||
| Physiolibrary.Hydraulic.Interfaces.HydraulicPort_a | inflow | ||
| Real | HR_effect | ||
| Real | EDV_withoutHReffect |