What does this research mean for the field?

Red blood cell deformability and hematocrit-dependent enrichment or depletion at vascular bifurcations can amplify or attenuate microvascular flow resistance asymmetry in daughter branches. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To evaluate how red blood cell deformability and local hematocrit distributions influence apparent viscosity and flow resistance across microvascular bifurcations.

August 23, 2026LifeOpen Access

Impact of Red Blood Cell Deformability and Local Hematocrit on Microvascular Flow Resistance: Insights from In Vitro Microfluidic Measurements and Viscosity Modeling

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Authors

EKEfstathios KaliviotisCyprus University of Technology PSPavlos S. StephanouCyprus University of Technology SBStavroula BalabaniStructural Heart Disease

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Implication

In vitro microfluidic study reveals how red blood cell stiffness modulates branch viscosity in microvascular bifurcations, highlighting mechanisms of asymmetric blood flow resistance.

Key Points

To evaluate how red blood cell deformability and local hematocrit distributions influence apparent viscosity and flow resistance across microvascular bifurcations.
Integrated in vitro microfluidic measurements of blood flow in Y-junction channels with a modified Krieger–Dougherty relative viscosity model.
Evaluated healthy and chemically stiffened red blood cell suspensions across multiple daughter-to-parent flow-split ratios.
Calculated local relative viscosity profiles using red blood cell elongation index measurements and spatially resolved RBC volume fraction distributions.
Demonstrated that local hematocrit partitioning at branch points directly determines relative viscosity profiles and branch-specific flow resistance.
Observed that red blood cell deformability changes either amplify or attenuate resistance asymmetry between daughter branches of a Y-junction depending on the flow split.

Cite This Study

Kaliviotis et al. (2026) studied this question.

synapsesocial.com/papers/6a8aad977677a34114445d2b https://doi.org/10.3390/life16081382

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Implication

In vitro microfluidic study reveals how red blood cell stiffness modulates branch viscosity in microvascular bifurcations, highlighting mechanisms of asymmetric blood flow resistance.

Impact of Red Blood Cell Deformability and Local Hematocrit on Microvascular Flow Resistance: Insights from In Vitro Microfluidic Measurements and Viscosity Modeling

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Key Points

Cite This Study

Impact of Red Blood Cell Deformability and Local Hematocrit on Microvascular Flow Resistance: Insights from In Vitro Microfluidic Measurements and Viscosity Modeling

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Implication

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Cite This Study

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