Linked Life Data

2761430

Source:http://linkedlifedata.com/resource/pubmed/id/2761430

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1
pubmed:dateCreated
1989-9-18
pubmed:abstractText
Studies of blood flow in mesentery, cremaster muscle, and small bore glass tubes were performed to obtain a relationship between mean velocity (Vmean) and red cell velocity using the two-slit method under epifluorescence (Vepi) and transillumination (Vtrans) microscopy. The velocities Vepi and Vtrans obtained in vivo for 47 measurements in arterioles and venules (12- to 51-micron internal diameter) were linearly related by Vepi = 0.83 Vtrans + 0.074, and the ratio Vepi/Vtrans decreased gradually with increasing vessel diameter (P less than or equal to 0.05). In vitro studies in tapered glass tubes (diameter 30-70 micron) were conducted for feed hematocrits (HF) from 10 to 40%. Under transillumination, Vtrans/Vmean was nearly constant with an average of 1.56 +/- 0.16 (SD) for all hematocrits and diameters. The velocity ratio, Vepi/Vmean, however, decreased with HF from 1.8 to 0.8 as HF was increased from 10 to 40%. Theoretical considerations suggest that the variations of Vepi/Vmean with tube hematocrit and diameter might result from attenuation of the excitation light by absorption and scattering by red cells, and also due to a finite depth of field of the microscopic objective.
pubmed:grant
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jul
pubmed:issn
0026-2862
pubmed:author
pubmed:issnType
Print
pubmed:volume
38
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
110-24
pubmed:dateRevised
2007-11-15
pubmed:meshHeading
pubmed:year
1989
pubmed:articleTitle
In vivo and in vitro measurements of red cell velocity under epifluorescence microscopy.
pubmed:affiliation
Department of Physiology, College of Physicians and Surgeons, Columbia University, New York, New York 10032.
pubmed:publicationType
Journal Article, In Vitro, Research Support, U.S. Gov't, P.H.S.