Results 261 to 270 of about 141,949 (308)
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Critical Care Medicine, 1989
The purpose of this study is to determine experimentally the optimal incident visible wavelength and light detector angle that yields the maximal change in optical density between an arterial or venous Hct of 20% and 40%. A universal monochromator allows incident wave-lengths in 8-nm increments over the visible range to be selected for the incident ...
J W, Gilbert, F P, Holladay, H C, Weiser
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The purpose of this study is to determine experimentally the optimal incident visible wavelength and light detector angle that yields the maximal change in optical density between an arterial or venous Hct of 20% and 40%. A universal monochromator allows incident wave-lengths in 8-nm increments over the visible range to be selected for the incident ...
J W, Gilbert, F P, Holladay, H C, Weiser
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Clinical Hemorheology and Microcirculation, 2016
The hematocrit (Hct) determines the oxygen carrying capacity of blood, but also increases blood viscosity and thus flow resistance. From this dual role the concept of an optimum Hct for tissue oxygenation has been derived.
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The hematocrit (Hct) determines the oxygen carrying capacity of blood, but also increases blood viscosity and thus flow resistance. From this dual role the concept of an optimum Hct for tissue oxygenation has been derived.
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The Role of the Hematocrit in Bleeding
Transfusion Medicine Reviews, 1987Low hematocrit is an often neglected cause in the pathogenesis of a prolonged bleeding time in an anemic patient. There has been ample evidence in the literature, indicating a relationship between hematocrit and the bleeding time; and that the transfusion of RBCs may correct the prolonged bleeding time often observed in anemic patients.
B, Boneu, F, Fernandez
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Acoustofluidic hematocrit determination
Analytica Chimica Acta, 2018Hematocrit (HCT) measurements of blood from patients, blood donors and athletes are routinely performed on a daily basis. These measurements are often performed in centralized hospital labs by whole blood analyzers, which leads to long time-to-result.
Klara Petersson +6 more
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The Hematocrit of Capillary Blood
New England Journal of Medicine, 1955THE measurement of the packed red-cell volume (or hematocrit) of the venous blood has long been recognized as a useful aid in the study of blood in a large number of clinical conditions.
J J, McGOVERN +2 more
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Optimal hematocrit for hemodialysis
Current Opinion in Nephrology and Hypertension, 1997Considerable controversy continues over the optimal hematocrit target for dialysis patients being treated with recombinant erythropoietin. Recent short-term studies have demonstrated a significant improvement in brain function when hematocrit is 42% compared with when it is 31%.
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Hematocrit measurement by dielectric spectroscopy
Proceedings of the Second Joint 24th Annual Conference and the Annual Fall Meeting of the Biomedical Engineering Society] [Engineering in Medicine and Biology, 2002Based on permittivity changes, a new method to measure hematocrit (HCT) in extracorporeal blood systems is presented. Human blood samples were tested at different HCT levels pairing the values of permittivity change, obtained by means of a commercial impedance analyzer, with traditional centrifugation measurements.
Ernesto F. Treo +4 more
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Influence of Lipid Emulsion for the Hematocrit Value Measured With Continuous Hematocrit Monitor
ASAIO Journal, 2007Continuous monitoring of hematocrit with a CRIT-LINE monitor (CLM) is used to prevent excess ultrafiltration during hemodialysis and continuous renal replacement therapy. The presence of substances affecting the scattering and absorption rates of multiple wavelengths of near infrared rays of CLM in the blood may affect the measured values with CLM.
Hiroshi, Iwaki +9 more
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The American Journal of the Medical Sciences, 1965
N J, GALLUZZI, A, DAMATO, L, BROMER
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N J, GALLUZZI, A, DAMATO, L, BROMER
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JAMA: The Journal of the American Medical Association, 1925
The hematocrit is an instrument by which is determined the volumetric relationship between corpuscles and plasma in a specimen of blood. Separation of the two elements is brought about in the centrifuge by virtue of a difference in their specific gravities.
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The hematocrit is an instrument by which is determined the volumetric relationship between corpuscles and plasma in a specimen of blood. Separation of the two elements is brought about in the centrifuge by virtue of a difference in their specific gravities.
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