Blood flow dynamics under venipuncture and viscosity estimation from pressure and flow variations

We have calculated the nonstationary flow of a viscous liquid in a narrow tube under the action of pressure variations with time. Such a flow accompanies venipuncture the procedure of taking a sample from a vein with a hypodermic needle. We show how the changes in the flow characterstics during veni...

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Bibliographic Details
Published in:Acoustical physics 2013, Vol.59 (1), p.109-114
Main Authors: Rudenko, O. V., Makov, Yu. N., Gurbatov, S. N.
Format: Article
Language:English
Subjects:
Acoustics
Acoustics of Animate Systems. Bioacoustics
Blood
Blood flow
Dynamics
Estimates
Liquids
Mathematical analysis
Physics
Physics and Astronomy
Tubes
Viscosity
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Summary:We have calculated the nonstationary flow of a viscous liquid in a narrow tube under the action of pressure variations with time. Such a flow accompanies venipuncture the procedure of taking a sample from a vein with a hypodermic needle. We show how the changes in the flow characterstics during venipuncture make it possible to actively estimate viscosity. This method is “nonperturbative” for blood in the sense that the measurement process weakly affects the measured quantity. It may find application in medicine.
ISSN:1063-7710
1562-6865
1562-6865
DOI:10.1134/S1063771013010168