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Oxygen delivery from red cells.

A Clark, W J Federspiel, P A Clark

    Biophysical Journal
    |February 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    This study analyzes oxygen unloading from red blood cells, revealing a boundary layer near the membrane. This finding simplifies oxygen delivery modeling and helps calculate minimum unloading times.

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    Area of Science:

    • Biophysics
    • Physiological Transport Phenomena

    Background:

    • Red blood cells (RBCs) are crucial for oxygen transport.
    • Understanding oxygen unloading kinetics is vital for physiological studies.

    Purpose of the Study:

    • To theoretically analyze oxygen unloading from red blood cells.
    • To develop a simplified model for oxygen delivery from RBCs.

    Main Methods:

    • Scale analysis of transport equations.
    • Method of matched asymptotic expansions.
    • Numerical integration for verification.

    Main Results:

    • Identified a boundary layer of chemical nonequilibrium near the RBC membrane.
    • Developed a lumped-parameter model for oxygen delivery.

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  • Validated the model against numerical simulations.

    • Conclusions:

    • The boundary layer significantly influences oxygen unloading dynamics.
    • The lumped-parameter model provides an accurate and simplified description of oxygen delivery.
    • This analysis enables calculation of minimum oxygen unloading times for RBCs.