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An Electrical Method to Determine Hematocrits
IRE Transactions on Medical Electronics, 1960It has been determined that the electrical conductance of whole blood is a very accurate index of its hematocrit. The new instrument described here fills a need for a quick, accurate portable hematocrit meter. This meter can be used at the patient's side for an instantaneous determination, and wherever a portable instrument is required.
Robert H. Okada, Herman P. Schwan
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Elevated hematocrit in patients with schizophrenia
Biological Psychiatry, 1987A number of investigators have reported altered hematocrit in psychiatric disorders (Benitone and Kling 1970; Dintenfass and Zador 1976, 1977; Schubert and Rohira 198 1). Benitone and Kling (1970) reported elevated hematocrit in 43 of 226 male patients in a psychiatric hospital. Only 7% of the normal controls showed similar hematocrit changes.
William H. Wilson, Roy J. Mathew
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The Effect of Hematocrit on Peritoneal Transport
American Journal of Kidney Diseases, 1991Eight stable patients, from our institution, on continuous ambulatory peritoneal dialysis (CAPD) were entered into a multicenter, randomized, double-blind, placebo-controlled study with erythropoietin (EP]. To assess the effect of hematocrit on peritoneal solute transport, we performed peritoneal equilibration tests (PET) on each patient on a quarterly
Catherine Firanek +2 more
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, 1994 An essential clinical goal is the maintenance of an oxygen delivery (DO2) sufficient to meet tissue oxygen demands. Convective DO2 can be globally quantitated as the product of the blood flow and the arterial oxygen content. A change in hematocrit induces a proportional change in arterial oxygen content and often an opposite change in blood flow ...
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Current strategies for coping with the hematocrit problem in dried blood spot analysis.
Bioanalysis, 2014The hematocrit (Hct) problem is the most widely discussed issue in dried blood spot (DBS) analysis. As Hct determines the vis-cosity of blood, it affects the spreading of blood spotted on filter paper. Therefore, par -tial punches taken from DBS prepared
Pieter M M De Kesel +3 more
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Validity of Arterial Hematocrits in Newborns
Archives of Pediatrics & Adolescent Medicine, 1988Various methods are used to obtain specimens for hematocrit determination in neonates. We evaluated arterial sampling and found this method to be acceptable. Arterial values correlated closely with simultaneously obtained venous samples. Venous blood obtained with a tourniquet had a significantly higher hematocrit than that obtained without a ...
Mary Jo Stine, Howard Harris
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Noninvasive In Vivo Measurements of Hematocrit
Journal of Ultrasound in Medicine, 2003To develop a clinically applicable method for noninvasive acoustic determination of hematocrit values in vivo.The value of hematocrit was determined initially in vitro from the pulseecho measurements of acoustic attenuation. The testing was carried out in a laboratory setup with an ultrasonic transducer operating at 20 MHz and with the use of human ...
W. Secomski +4 more
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Hematocrit and Bleeding Time: An Update
Southern Medical Journal, 1994The bleeding time is prolonged in anemic patients independent of their platelet count and is shortened by elevating the hematocrit. It is theorized that an increase in circulating red blood cells increases platelet radial movement and interaction with endothelium. Platelet dysfunction in uremia is well known but poorly understood.
A Anand, S E Feffer
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Microcirculatory hematocrit and blood flow
Journal of Theoretical Biology, 1988Direct measurements from many laboratories indicate that the oxygen tension in skeletal muscle is significantly less than in the large veins draining these tissues. Harris (1986) has proposed that because of the parallel anatomic arrangement of large arterioles and venules in skeletal muscle, a counter-current exchange between these vessels can occur ...
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