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Updated: Aug 5, 2026
10:27
Controlled Microfluidic Environment for Dynamic Investigation of Red Blood Cell Aggregation
Published on: June 4, 2015
Plasma viscosity, haematocrit and red-cell transport
Summary
A new erythrocyte transport function (ETF) measures red blood cell circulation efficiency. This ETF correlates with the hematocrit to blood viscosity ratio, peaking at 42% hematocrit and influenced by plasma viscosity and shear.
Area of Science:
- Biophysics
- Hematology
- Cardiovascular Physiology
Background:
- Red blood cell circulation is vital for oxygen delivery.
- Quantifying circulation efficiency requires robust physiological indices.
- Existing measures may not fully capture complex hemorheological dynamics.
Purpose of the Study:
- To propose a novel index for erythrocyte transport function (ETF).
- To evaluate the relationship between ETF and hemorheological parameters.
- To investigate factors influencing ETF in normal and pathological blood.
Main Methods:
- Development and proposal of the erythrocyte transport function (ETF) index.
- Viscometric analysis of normal and pathological blood samples.
- Measurement of hematocrit, whole-blood viscosity, and plasma viscosity under varying conditions.
Main Results:
- ETF is proportional to the ratio of hematocrit to whole-blood viscosity (phi/eta).
- Maximal ETF values generally observed at approximately 42% hematocrit.
- ETF is significantly influenced by plasma viscosity and shear rate.
Conclusions:
- The proposed ETF offers a valuable index for assessing red blood cell circulation efficiency.
- Hematocrit, plasma viscosity, and shear are key determinants of ETF.
- Understanding these factors is crucial for evaluating hemorheological health.
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