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Topic: Hematocrit

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	Hematocrit - Complete Blood Count
		Because the hematocrit is a percentage of red blood cells, as compared to the total volume of blood, any increase or decrease in plasma volume affects the hematocrit.
		A decreased hematocrit occurs due to overhydration, which lowers the percentage of red blood cells in relation to the liquid plasma portion of blood.
		A hematocrit that is done immediately after a hemorrhage usually does not show the extent of RBC loss because at the time of the hemorrhage, plasma and red blood cells are lost in equal proportions.
	www.rnceus.com /cbc/cbchct.html (494 words)

	BLOOD TESTING FOR PROFESSIONAL CYCLISTS
		The UCI explained that, a 53% hematocrit limit was initially proposed (based on three standard deviations above the average hematocrit value for a normal population) but then decreased to 50% to ensure that all professional team delegates were in agreement.
		A more detailed examination of the hematocrit data from all sports determined that the percentage of tests where hematocrit was greater than 50% ranged from 0.3% in netball to 25.7% in weight lifting.
		Hematocrit reflects the balance between red blood cell production and destruction but is also known to be influenced by dehydration and body posture.
	www.sportsci.org /news/news9703/AISblood.html (2166 words)

	Hematocrit
		Hematocrit (HCT) is essentially the percentage of your blood that is made up of red blood cells.
		So hematocrit is a representation of the oxygen carrying capacity of the blood.
		Therefore hematocrit is a smaller portion of the whole blood.
	www.cyclingscience.org /hematocrit.htm (568 words)

	Hematocrit - Health and Medical Information Produced by Doctors - MedicineNet.com
		The hematocrit is the proportion, by volume, of the blood that consists of red blood cells.
		For example, an hematocrit of 25% means that there are 25 milliliters of red blood cells in 100 milliliters of blood.
		Some other infrequent causes of elevated hematocrit are lung disease, certain tumors, a disorder of the bone marrow known as polycythemia rubra vera, and abuse of the drug erythropoietin (Epogen) by athletes for blood doping purposes.
	www.medicinenet.com /hematocrit/article.htm (455 words)

	BioMed Central \| Full text \| Polycystic kidney disease in patients on the renal transplant waiting list: trends in ...
		Hematocrit at presentation to ESRD was significantly higher in patients with PKD compared with patients with other causes of ESRD.
		For patients with ESRD due to PKD, median hematocrit in 1995 was 29.9 ± 5.7%, in 1996 29.6 ± 5.3%, in 1997 30.5 ± 5.4%, in 1998 30.9 ± 5.6%, and in 1999 31.3 ± 5.5%.
		In summary, the mean hematocrit of patients with polycystic kidney disease was significantly higher at presentation to ESRD than for patients with other causes of ESRD on the renal transplant waiting list, despite a significant overall increase in such levels in more recent years of the study.
	www.biomedcentral.com /1471-2369/3/7 (2811 words)

	AllRefer Health - Hematocrit (HCT) (HCT) - Test/Medical Exams/Tests
		The hematocrit is the percent of whole blood that is comprised of red blood cells.
		The hematocrit is a measure of both the number of red blood cells and the size of red blood cells.
		The hematocrit is almost always ordered as part of a complete blood count, which measures the number of red blood cells, the number of white blood cells, the total amount of hemoglobin in the blood, and the fraction of the blood composed of red blood cells (hematocrit).
	health.allrefer.com /health/hematocrit-info.html (331 words)

	Effects of Hematocrit in DUI Blood Alcohol Testing
		Thus, for example, a hematocrit of.47 would indicate that the individual's blood consists of 47 percent solid particles (cells and platelets) and 53 percent plasma.
		Applying this to breath analysis, the air in the lung is absorbing alcohol by diffusion from the blood washing the alveolar sacs in the lung tissue.
		The average hematocrit for men is 47 percent, with a range of 42 to 52; women's hematocrit averages 42 percent, and ranges from 37 to 47.
	www.drunkdriving-california.org /blood_hematocrit.html (849 words)

	Hematocrit (HCT)
		The hematocrit is the percent of whole blood that is composed of red blood cells.
		The hematocrit is a measure of both the number of red blood cells and the size of red blood cells.
		The hematocrit is almost always ordered as part of a complete blood count, which measures the number of red blood cells, the number of white blood cells, the total amount of hemoglobin in the blood, and the fraction of the blood composed of red blood cells (hematocrit).
	www.healthcentral.com /ency/article/003646.htm (680 words)

	Hematocrit \| AHealthyMe.com
		The hematocrit is usually done on a person with symptoms of anemia.
		The hematocrit test can also be done on an automated instrument as part of a complete blood count.
		Hematocrit values increase when the size or number of red cells increase, such as in polycythemia.
	www.ahealthyme.com /topic/topic100586919 (655 words)

	Clinical Pharmacology & Therapeutics - Abstract of article: Reduction in hematocrit level after pioglitazone ...
		Reduction in hematocrit level after pioglitazone treatment is correlated with decreased plasma free testosterone level, not hemodilution, in women with polycystic ovary syndrome
		In thiazolidinedione-treated patients a small reduction in hemoglobin and hematocrit levels often is observed, and this generally has been attributed to fluid retention.
		In summary, pioglitazone treatment is associated with a mild decline in hematocrit or hemoglobin level, which is correlated with the reduction in plasma testosterone level.
	www.nature.com /doifinder/10.1016/j.clpt.2006.03.014 (569 words)

	Hematocrit levels - allnurses.com Nursing for Nurses
		A hematocrit is the measure of the packed red blood cell volume in the blood.
		The hematocrit is thus expressed as a percentage.
		She was brought to the ER on Friday night..Hemoglobin of 5, Hematocrit of 18!
	www.allnurses.com /forums/f8/hematocrit-levels-149114-post1570337.html (869 words)

	Hematocrit definition - Medical Dictionary definitions of popular medical terms easily defined on MedTerms
		Hematocrit: The proportion of the blood that consists of packed red blood cells.
		The hematocrit is expressed as a percentage by volume.
		The term "hematocrit" was coined in 1903 and comes from the Greek roots hemat-, blood + krites, judge = to judge or gauge the blood.
	www.medterms.com /script/main/art.asp?articlekey=3680 (278 words)

	Hematocrit: The Test
		The hematocrit is normally ordered as a part of the complete blood count (CBC).
		The most common cause of increased hematocrit is dehydration, and with adequate fluid intake, the hematocrit returns to normal.
		Anytime a hematocrit is persistently high, the cause should be determined in consultation with a doctor.
	www.labtestsonline.org /understanding/analytes/hematocrit/test.html (378 words)

	JAMA -- Abstract: Nonhemorrhagic decrements in hematocrit values after percutaneous renal biopsy, September 19, 1977, ...
		Find out more about why this message is appearing and what you can do to make your experience on this site better.
		were studied to define the incidence of decrements in hematocrit values,
		hematocrit nadirs of greater than or equal to 1%.
	jama.ama-assn.org /cgi/content/abstract/238/12/1266 (214 words)

	MEL application M, hematocrit
		(hematocrit = densitiy of human blood) dissaertation, Australia
		The traditional method to determin the hematocrit is labour intensive and involves expensive laboratory equipment.
		The M5 distance sensor introduces a faster and more effective way to measure the hematocrit by analizing the reflection of the intensity signal.
	www.melsensor.de /MEL186-289;M_hematocrit.html (279 words)

	NEJM -- The Effects of Normal as Compared with Low Hematocrit Values in Patients with Cardiac Disease Who Are Receiving ...
		The Effects of Normal as Compared with Low Hematocrit Values in Patients with Cardiac Disease Who Are Receiving Hemodialysis and Epoetin
		the hematocrit in patients with cardiac disease who were undergoing
		to maintain a hematocrit of 30 percent throughout the study.
	content.nejm.org /cgi/content/abstract/339/9/584 (2611 words)

	hematocrit
		The hematocrit is a measure of the fractional level of red cells in the blood.
		Its level is expressed as a percentage originally obtained by centrifuging a blood specimen in a tiny capillary tube and comparing the red cell level to the total volume on a calibrated scale.
		Now, most labs use an automated analyser that calculates this percentage from other measurements.
	www.drhull.com /EncyMaster/H/hematocrit.html (62 words)

	Hct (hematocrit) definition - Medical Dictionary definitions of popular medical terms easily defined on MedTerms
		Hct (hematocrit) definition - Medical Dictionary definitions of popular medical terms easily defined on MedTerms
		A quarter of the blood consists of red cells.
		Back to MedTerms online medical dictionary A-Z List
	www.medterms.com /script/main/art.asp?articlekey=3660 (147 words)

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