Four region, distributed model for the O2-CO2 transport, exchange and metabolism. From Dash 2006 paper. Annotated for use with MPC. Compute dissolved O2 and CO2 from total O2 and CO2 (TO2 and TCO2) through numerical inversion method that uses SHbO2CO2_EJAP2016 routine and Christmas 2017 O2/CO2 solubility algorithm. Incorporates Calculations for temperature changes based on consumption of O2 in parenchymal region.
Description
Four region model for the O2-CO2 transport, exchange and metabolism. Based on Dash et al 2006 and 2010 papers. Computes dissolved O2 and CO2 from total O2 and CO2 (TO2 and TCO2) through numerical inversion method using Dash et al. 2016 routine. O2 and CO2 gas solubility change with time and position based on Christmas et al. 2017 O2/CO2 solubility algorithm that incorporates temperature and density (or water space) into its solubility calculations. Incorporates calculations for temperature changes (time and position dependent) based on consumption of O2 generating heat in parenchymal cell (PC) region. Model incorporated into larger recirculating model (Model #405, RecircO2CO2BTEX_3CompLung).
Figure 1: Axial distribution of pO2 and pCO2 along tissue axis at t.max=100 s. rbc = red blood cells, pl = plasma region, isf = interstitial region, and pc = parenchymal cells (musscle cells). pO2 and pCO2 going into tissue: 100 mmHg and 40 mmHg respectively.
Figure 2: Axial distribution of hemoglobin saturation SHbO2(Blk) and SHbCO2(x20) along tissue axis at t.max=100 s. rbc = red blood cells, pl = plasma region, isf = interstitial region, and pc = parenchymal cells (musscle cells). pO2 and pCO2 going into tissue: 100 mmHg and 40 mmHg respectively.
Equations
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Please cite https://www.imagwiki.nibib.nih.gov/physiome in any publication for which this software is used and send one reprint to the address given below:
The National Simulation Resource, Director J. B. Bassingthwaighte, Department of Bioengineering, University of Washington, Seattle WA 98195-5061.
Model development and archiving support at https://www.imagwiki.nibib.nih.gov/physiome provided by the following grants: NIH U01HL122199 Analyzing the Cardiac Power Grid, 09/15/2015 - 05/31/2020, NIH/NIBIB BE08407 Software Integration, JSim and SBW 6/1/09-5/31/13; NIH/NHLBI T15 HL88516-01 Modeling for Heart, Lung and Blood: From Cell to Organ, 4/1/07-3/31/11; NSF BES-0506477 Adaptive Multi-Scale Model Simulation, 8/15/05-7/31/08; NIH/NHLBI R01 HL073598 Core 3: 3D Imaging and Computer Modeling of the Respiratory Tract, 9/1/04-8/31/09; as well as prior support from NIH/NCRR P41 RR01243 Simulation Resource in Circulatory Mass Transport and Exchange, 12/1/1980-11/30/01 and NIH/NIBIB R01 EB001973 JSim: A Simulation Analysis Platform, 3/1/02-2/28/07.