PubMed · 9851230
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
T Sato, H Sugiyama. 1998. [Hyperviscosity syndrome].. https://pubmed.ncbi.nlm.nih.gov/9851230/
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
A 57-year-old man with no previous medical history entered the emergency department with 2 days of painless vision loss in the left eye. The patient was diagnosed with central retinal vein occlusion (CRVO) and admitted for treatment. Further work-up revealed that the cause of his CRVO was a hyperviscosity syndrome secondary to multiple myeloma. The patient received two rounds of plasmapheresis with slight recovery of vision and was discharged 28 days later.
Explore the source record for details and available documents.
Fully-developed one-dimensional Casson flow through a single vessel of varying radius is proposed as a model of low Reynolds number blood flow in small stenosed coronary arteries. A formula for the resistance-to-flow ratio is derived, and results for yield stresses of tau 0 = 0, 0.005 and 0.01 Nm-2, viscosities of mu = 3.45 x 10(-3), 4.00 x 10(-3) and 4.55 x 10(-3) Pa.s and fluxes of 2.73 x 10(-6), x 10(-5) and x 10(-4) m3 s-1 are determined for segment of 0.45 mm radius and 45 mm length, with 15 mm abnormalities at each end where the radius varies by up to +/- 0.225 mm. When tau 0 = 0.005 N m-2, mu = 4 x 10(-3) Pa.s and Q = 1, the numerical values of the resistance-to-flow ratio vary from lambda = 0.525, when the maximum radii of the two abnormal segments are both 0.675 mm, to lambda = 3.06, when the minimum radii are both 0.225 mm. The resistance-to-flow ratio moves closer to unity as yield stress increases or as blood viscosity or flux decreases, and the magnitude of these alterations is greatest for yield stress and least for flux.