scholarly journals THE ELECTRICAL CONDUCTIVITY OF BLOOD

Blood ◽  
1950 ◽  
Vol 5 (11) ◽  
pp. 1017-1035 ◽  
Author(s):  
FREDERIC G. HIRSCH ◽  
E. CLINTON TEXTER ◽  
LLOYD A. WOOD ◽  
WILLIAM C. BALLARD ◽  
FRANCIS E. HORAN ◽  
...  

Abstract 1. The factors influencing blood conductivity have been noted. 2. An accurate apparatus has been designed to measure blood and plasma conductivity. 3. A new cell has been designed to measure conductivity of blood. 4. Through studies on normal blood before and after dilution, a correlation has been shown to exist between blood conductivity and the red cell count. 5. The form factor for normal human red cells has been determined to be 1.393. 6. A mathematical equation is presented relating red cell count with conductivity for normal blood. See PDF for Equation 7. The factor C on the basis of 33 determinations has been calculated to be 10.80.

2019 ◽  
Vol 39 (11) ◽  
pp. 1555-1561 ◽  
Author(s):  
Timothy M. Bahr ◽  
Allison J. Judkins ◽  
Robert D. Christensen ◽  
Vickie L. Baer ◽  
Erick Henry ◽  
...  
Keyword(s):  
Red Cell ◽  

1973 ◽  
Vol 53 (2) ◽  
pp. 229-236 ◽  
Author(s):  
G. PELLETIER ◽  
L. J. MARTIN

Sheep were used to compare the anemia effects of fresh marrow-stem kale (Brassica oleracea var. acephala D.C.) with low-temperature dehydrated marrow-stem kale (MSK). There was a drop in hemoglobin (P < 0.01), packed-cell volume (P < 0.05), and red blood cell count (P < 0.05) after the 4th, 5th, and 6th wk, respectively, of feeding fresh MSK. Similar drops in hemoglobin (P < 0.05), packed-cell volume (P < 0.05), and red cell count (P < 0.05) occurred after the 4th wk of feeding dried MSK. Formation of Heinz-Ehrlich bodies peaked at the corresponding lowest values of hemoglobin and packed-cell volume for both fresh and dried MSK. These criteria returned almost to normal in the 2nd and 3rd wk after stopping the feeding of kale and using ground hay as the entire ration instead. It was concluded that high levels of either fresh or dried MSK could not be fed to sheep even for a relatively short period of time.


1993 ◽  
Vol 42 (3-4) ◽  
pp. 245-252 ◽  
Author(s):  
G.M.D. Dal Colletto ◽  
D.W. Fulker ◽  
O.C. de O. Barretto ◽  
M. Kolya

AbstractIn a sample of 105 concordant sex MZ and DZ twin pairs, the following characteristics were measured: red cell count, haemoglobin concentration, package cell volume, mean cell volume, mean cell haemoglobin, mean cell haemoglobin concentration, reticulocytes, platelets, white cell count and the six types of leucocytes, lymphocytes, monocytes, band and segmented neutrophils, eosinophils and basophils. The statistical model employed in the univariate twin analysis allows for three sources of variation: genetic (h2), shared environmental (c2) and specific environmental influences (e2). A genetic component was significant for red cell count, haemoglobin and mean cell haemoglobin (0.64, 0.60 and 0.46 respectively), with heritable variation suggested for package cell volume, mean cell volume, mean cell haemoglobin, lymphocytes and monocytes. Shared environmental variation was only present for neutrophils.


Blood ◽  
1948 ◽  
Vol 3 (4) ◽  
pp. 349-360 ◽  
Author(s):  
M. H. FERTMAN ◽  
CHARLES A. DOAN

Abstract 1. "Inclusion bodies," distinguishable from the Howell-Jolly bodies, were observed in the red blood cells of a patient with a severe refractory fatal anemia, who had been receiving erythrol tetranitrate over a period of one year. 2. "Bodies" with similar staining characteristics were reproduced in cats with large oral doses of erythrol tetranitrate and other nitrates. These were generally accompanied by a temporary fall in the red cell count, followed by recovery upon withdrawal of the drug.


Author(s):  
Chris Bunch

Anaemia denotes a reduction in the circulating haemoglobin level or red-cell count below that which is normal for the individual’s age and sex. Anaemia is common and may be a primary problem or a feature of a wide variety of other conditions. This chapter covers the approach to diagnosis, diagnostic tests, therapies, prognosis, and dealing with uncertainty in the initial diagnosis.


1987 ◽  
Vol 58 (04) ◽  
pp. 964-965 ◽  
Author(s):  
J J van Doormaal ◽  
J van der Meer ◽  
H R Oosten ◽  
M R Halie ◽  
H Doorenbos

SummaryThe effect of induced hypothyroidism on platelet count and platelet volume distribution was studied in twelve athyreotic patients, After a two weeks withdrawal of triiodothyronine supplementation, platelet count and the ratio between platelet and red cell count were increased in all patients. Furthermore, mean platelet volume was declined and platelet distribution width was risen. Thus, hypothyroidism appears to increase the number of circulating platelets, especially the smaller ones.


Blood ◽  
1961 ◽  
Vol 17 (1) ◽  
pp. 83-96 ◽  
Author(s):  
STANLEY YACHNIN ◽  
MITSUKO T. LAFORET ◽  
FRANK H. GARDNER

Abstract 1. Treatment of normal human red cells with various proteolytic enzymes, cholera vibrio filtrate, influenza virus, and periodate ion results in red cells susceptible to acid hemolysis in compatible normal human serum. 2. The kinetics of hemolysis of these artificially altered red cells resembles in many respects those observed in paroxysmal nocturnal hemoglobinuria (PNH). 3. While the observed differences in behavior between these artificially altered cells and PNH cells do not allow direct comparison, it is felt that these models may offer some clues in the understanding of PNH cell hemolysis, and some insight into the nature of the red cell lesion in paroxysmal nocturnal hemoglobinuria.


Author(s):  
Nola J. Parsons ◽  
Adam M. Schaefer ◽  
Stephen D. Van der Spuy ◽  
Tertius A. Gous

There are few publications on the clinical haematology and biochemistry of African penguins (Spheniscus demersus) and these are based on captive populations. Baseline haematology and serum biochemistry parameters were analysed from 108 blood samples from wild, adult African penguins. Samples were collected from the breeding range of the African penguin in South Africa and the results were compared between breeding region and sex. The haematological parameters that were measured were: haematocrit, haemoglobin, red cell count and white cell count. The biochemical parameters that were measured were: sodium, potassium, chloride, calcium, inorganic phosphate, creatinine, cholesterol, serum glucose, uric acid, bile acid, total serum protein, albumin, aspartate transaminase and creatine kinase. All samples were serologically negative for selected avian diseases and no blood parasites were detected. No haemolysis was present in any of the analysed samples. Male African penguins were larger and heavier than females, with higher haematocrit, haemoglobin and red cell count values, but lower calcium and phosphate values. African penguins in the Eastern Cape were heavier than those in the Western Cape, with lower white cell count and globulin values and a higher albumin/globulin ratio, possibly indicating that birds are in a poorer condition in the Western Cape. Results were also compared between multiple penguin species and with African penguins in captivity. These values for healthy, wild, adult penguins can be used for future health and disease assessments.


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