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Differences in peripheral arterial and venous hemorheologic parameters

F C Mokken1, F J van der Waart, C P Henny

  • 1Department of Anesthesiology, University of Amsterdam, The Netherlands.

Annals of Hematology
|September 1, 1996
PubMed
Summary

Arterial and venous blood samples show significant differences in hemorheologic parameters like viscosity and hematocrit. These rheological variations indicate that arterial and venous blood are not fully comparable for clinical studies.

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Area of Science:

  • Cardiovascular Science
  • Hemodynamics
  • Biomedical Engineering

Background:

  • Hemodynamic parameters are crucial in cardiovascular health.
  • Understanding blood rheology differences between arterial and venous systems is important for accurate clinical assessments.

Purpose of the Study:

  • To compare hemorheologic parameters in arterial versus venous blood.
  • To determine if arterial and venous blood samples are rheologically comparable.

Main Methods:

  • Measured hematocrit, whole blood viscosity, plasma viscosity, erythrocyte deformability, and erythrocyte aggregation.
  • Analyzed blood from 20 patients undergoing cardiac surgery.

Main Results:

  • Venous blood exhibited significantly higher hematocrit, whole blood viscosity, plasma viscosity, and erythrocyte aggregation compared to arterial blood.

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  • Erythrocyte deformability showed no significant difference between arterial and venous samples.
  • Observed differences are potentially attributable to hematocrit variations.

    • Conclusions:

    • Arterial and venous blood samples are not entirely rheologically comparable.
    • These rheological differences may hold clinical significance, especially with advanced measurement techniques.