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Tytuł pozycji:

A simple "streak length method" for quantifying and characterizing red blood cell velocity profiles and blood flow in rat skeletal muscle arterioles.

Tytuł:
A simple "streak length method" for quantifying and characterizing red blood cell velocity profiles and blood flow in rat skeletal muscle arterioles.
Autorzy:
Al-Khazraji BK; Department of Medical Biophysics, University of Western Ontario, London, Ontario, Canada.
Novielli NM
Goldman D
Medeiros PJ
Jackson DN
Źródło:
Microcirculation (New York, N.Y. : 1994) [Microcirculation] 2012 May; Vol. 19 (4), pp. 327-35.
Typ publikacji:
Journal Article; Research Support, Non-U.S. Gov't
Język:
English
Imprint Name(s):
Publication: Malden, MA : Wiley-Blackwell
Original Publication: New York, NY : Chapman & Hall, c1994-
MeSH Terms:
Models, Cardiovascular*
Erythrocytes/*physiology
Muscle, Skeletal/*blood supply
Animals ; Arterioles/physiology ; Blood Flow Velocity ; Male ; Rats ; Rats, Sprague-Dawley
Entry Date(s):
Date Created: 20120131 Date Completed: 20120820 Latest Revision: 20120424
Update Code:
20240104
DOI:
10.1111/j.1549-8719.2012.00165.x
PMID:
22284025
Czasopismo naukowe
Objectives: To develop a valid experimental method for quantifying blood flow in continuously branching skeletal muscle arterioles, and to derive an empirical relationship between velocity ratio (V(Max)/V(Mean)) and arteriolar diameter.
Methods: We evaluated arteriolar trees using IVVM of rat gluteus maximus muscle and developed a method to acquire single fluorescent-labeled RBC velocities across arteriolar lumens to create velocity profiles. These data were used to calculate the blood flow for 37 vessel segments (diameters: 21-115 μm).
Results: Mass balance at arteriolar bifurcations had 0.6 ± 3.2% error. Velocity ratios ranged from 1.35 to 1.98 and were positively correlated with diameter (p < 0.0001), and V(RBC) profiles were blunted with decreasing diameter.
Conclusions: We present a means for quantifying blood flow in continuously branching skeletal muscle arterioles. Further, we provide an equation for calculating velocity ratios based on arteriolar diameter, which may be used by others for blood flow calculations.
(© 2012 John Wiley & Sons Ltd.)

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