modelGILumenInternal
Extends from Physiolibrary.SteadyStates.Interfaces.SteadyState, Physiolibrary.Icons.GILumen.
Information
QHP 2008 / GILumenH2O.REF
Volume ========================================
Typical lumen volume is 1000 mL on an intake of 1.4 mL/Min.
This number is based on lumen volume being 1.4% body weight
from
JCI 36:289-296, 1957.
Data suggests a 1L oral load is nearly all absorbed in
1 Hr. Average rate would be 17 mL/Hr with a peak rate
of about 30.
Baldes & Smirk. J.Physiol. 82:62,1934.
Osmolar gradient is assumed to be 0.200 mOsm/mL.
Rate = Perm * Grad
30 = Perm * 0.200
Perm = 150
Temperature ===================================
Typical lumen heat content is 155 kCal.
Specific heat (SH) of H2O is 0.001 (kCal/G)/DegK.
To get temperature from heat
DegK = 1000.0 * kCal/G (or mL)
DegC = DegK - 273.15
DegF = ( 9 / 5 ) * DegC + 32
To get heat from temperature
kCal = 0.001 * DegK * mL
kCal/Min = 0.001 * DegK * mL/Min
Parameters
| Type | Name | Default | Description |
|---|
| Physiolibrary.Types.Volume | mass_start | 0.000949201 | |
Components
| Type | Name | Default | Description |
|---|
| Physiolibrary.Types.RealIO.AmountOfSubstanceInput | GILumenSodium | | sodium in gastro intestinal lumen |
| Physiolibrary.Types.RealIO.AmountOfSubstanceInput | GILumenPotassium | | potasium in gastro intestinal lumen |
| Physiolibrary.Osmotic.Interfaces.OsmoticPort_b | absorbtion | | |
| Physiolibrary.Types.Volume | mass | | water volume in gastro intestinal lumen |
| Physiolibrary.Types.Osmolarity | OsmNa | | |
| Physiolibrary.Types.Osmolarity | OsmK | | |
| Physiolibrary.Types.RealIO.VolumeOutput | Vol | | |
| Physiolibrary.Types.RealIO.OsmolarityInput | Fiber | | dietary fiber in gastro intestinal lumen |
Revisions
-
- january 2009
by Marek Matejak in Modelica initially implemented (consulted with Jiri Kofranek), Charles University, Prague
orginaly described by Tom Coleman in QHP 2008 beta 3, University of Mississippi Medical Center