Pulmonary and cardiovascular integrated model controlled with oxygen consumption.

Area of Science:

• Physiology
• Computational Biology
• Biomedical Engineering

Background:

• Understanding cardiorespiratory system integration is crucial for physiological research.
• Existing models often lack comprehensive integration of pulmonary and cardiovascular functions.
• Oxygen consumption is a key driver of cardiorespiratory adaptation.

Purpose of the Study:

• To develop and validate an integrated cardiorespiratory model.
• To simulate physiological responses based on oxygen consumption.
• To compare model outputs with experimental data for healthy individuals.

Main Methods:

• Constructed an integrated model comprising pulmonary, cardiovascular, gas exchange, and control systems.
• Model is driven by oxygen (O2) consumption.
• Validated the model by comparing calculated ventilation and cardiac output with literature values from healthy men at rest and during cycling exercise.

Main Results:

• Calculated ventilations and cardiac outputs aligned with experimental literature values across varying O2 consumptions.
• Simulated O2 and CO2 transfer rates between blood and alveolar regions were consistent with O2 consumption and CO2 production.
• The integrated model demonstrates predictive capability for cardiorespiratory function.

Conclusions:

• The developed integrated cardiorespiratory model provides a robust platform for studying physiological responses.
• The model's validation confirms its accuracy in simulating human cardiorespiratory dynamics.
• This computational tool can aid in understanding cardiorespiratory integration and adaptation.