
	Where results make sense

Topic: Osmolality

Related Topics

Normal saline

Electrolyte

PFO

Chemical pathology

Electrolyte disturbance

Vein

Landau pole

Gyges

Brian Close

Seger Ellis

BMW E90

Shanksville, Pennsylvania

Vietnam War

Ballyhaunis

FBI Ten Most Wanted Fugitives

In the News (Tue 1 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Osmolality: The Test
		The osmolality test is a snapshot of the number of solutes present in the plasma, urine, or stool.
		Stool osmolality may sometimes be ordered to help evaluate chronic diarrhea that does not appear to be due to a bacterial or parasitic infection or to another identifiable cause such as intestinal inflammation or damage.
		A plasma osmolality test and osmotic gap may be ordered when a patient has symptoms such as thirst, confusion, nausea, headache, lethargy, seizures, or coma that the doctor suspects may be due to hyponatremia or the ingestion of a toxin such as methanol or ethylene glycol.
	www.labtestsonline.org /understanding/analytes/osmolality/test.html (1230 words)

	Discovery Health :: Medical Tests :: urine osmolality test
		Osmolality also provides information about the body's ability to excrete certain materials (low excretion means kidney damage) and balance fluids like water (when someone drinks a lot of water, there is more in the urine and therefore a lower osmolality).
		Osmolality is interpreted according to the body's water balance: when water is plentiful omolality should be low (minimum of about 60) and when it is not, osmolality is maximized (1200).
		Inapproprite low osmolality is the abnormality most found and may be a sign of: Â• diabetes insipidus, a disease which causes increased thirst and urination as a result excess water loss in the urine.
	www.health.discovery.com /encyclopedias/illnesses.html?article=1383 (446 words)

	Osmolality
		Osmolality is a count of the total number of osmotically active particles in a solution and is equal to the sum of the molalities of all the solutes present in that solution.
		In response to even small increases in plasma osmolality (usually rises in plasma sodium), ADH release from the pituitary is increased causing water resorption in the distal tubules and collecting ducts of the kidney and correction of the increased osmolality.
		Interpretation of urine osmolality must always be made in the light of the appropriate physiological response to the state of hydration of the patient.
	www.sydpath.stvincents.com.au /tests/Osmolality.htm (1180 words)

	Infinit Nutrition ::::CREATE::DOMINATE::::
		Osmolality is a term used to describe the concentration of particles dissolved in a solution.
		It is a measure of density and is expressed in units of measurement known as osmoles or milliosmoles (one thousandth of an osmole), per 1000g of solvent, or mosm/kg.
		Solutions, which are marginally hypotonic, (that is are below the osmolality of the body), are known to be emptied quickly from the stomach and have the potential to be absorbed the most rapidly.
	www.infinitnutrition.us /information/osmolality101.asp (325 words)

	Osmolality - Health Centers
		This test measures the osmolality (concentration of particles) of blood serum (the fluid portion of blood).
		Osmolality increases with dehydration (loss of water without loss of solutes) and decreases with overhydration.
		In healthy people, when osmolality in the blood becomes high, ADH (antidiuretic hormone) is secreted.
	www.wsoctv.com /encyclopedia/6864502/detail.html (690 words)

	DEA Resources, Microgram Journal, Volume 1, January-June 2003-Osmolality - A Novel and Sensitive Tool for Detection of ...
		Osmolality and specific gravity testing were performed on a control (untampered) Demerol syringe solution, on a suspect (tampered) Demerol syringe solution, and on all four sterile solutions.
		Osmolality would clearly be a useful technique for similar, current cases of controlled substance thefts from hospitals, pharmacies, doctors' offices, and similar stocks.
		Osmolality is a very useful initial screen for suspect solutions in that it will detect the presence of ethylene glycol (and also other alcohols) at very low levels in water.
	www.usdoj.gov /dea/programs/forensicsci/microgram/journal_v1/mjournal_v1_pg2.html (3450 words)

	NTU Info Centre: Osmolality (Site not responding. Last check: )
		Osmolality, in biology and chemistry, is a measure of moles of solute per kg of water.
		Osmolality is molality times number of particles per molecule times another factor.
		Osmolality can be measured with an osmometer by determining the fall in freezing point when compared to deionised water (which has an osmolality of 0 mosm/L).
	www.nowtryus.net /article:Osmolality (274 words)

	Serum and urine osmolality
		A urine osmolality test may be done on an early morning urine sample as water depletion during the night should concentrate the urine.
		Urine osmolality reflects the total number of osmotically active particles in the urine, without regard to the size or weight of the particles.
		Therefore, urine osmolality is a more accurate measurement of urine concentration than specific gravity, and urine osmolality can be compared with the serum osmolality to obtain an accurate picture of a patient's fluid balance.
	www.rnceus.com /renal/renalosmo.html (542 words)

	Dr. Koop - Osmolality - urine
		The osmolality urine test measures the osmolality (concentration of particles) of the urine.
		Osmolality (particles/kg water) and osmolarity (particles/liter of solution) are sometimes confused -- but for dilute fluids such as urine, they are essentially the same.
		Osmolality is a more exact measurement of urine concentration than specific gravity because specific gravity depends on the precise nature of the molecules present in the urine.
	www.drkoop.com /ency/408/003609.html (480 words)

	CIGNA - Serum Osmolality
		A serum osmolality test measures the amount of chemicals dissolved in the fluid portion of blood (serum).
		A serum osmolality test is done on a blood sample taken from a vein.
		The osmolality of urine may be measured and compared to the blood osmolality to help evaluate how well the kidneys work to remove water and chemicals from the blood.
	www.cigna.com /healthinfo/hw203418.html (867 words)

	Osmolality - Urine - Health Centers
		Osmolality measures the concentration of particles in a solution, in this case, urine.
		Osmolality (particles/kg water) and osmolarity (particles/liter of solution) are sometimes confused -- but for dilute fluids such as urine, they are essentially the same.
		Osmolality is a more exact measurement of urine concentration than specific gravity because specific gravity depends on the precise nature of the molecules present in the urine.
	www.thebostonchannel.com /encyclopedia/6864658/detail.html (648 words)

	Osmolality Medical Information
		This test measures the osmolality (concentration of particles) of blood serum (the fluid portion of blood).
		Osmolality increases with dehydration (loss of water without loss of solutes) and decreases with overhydration.
		In healthy people, when osmolality in the blood becomes high, ADH (antidiuretic hormone) is secreted.
	www.drugs.com /enc/osmolality.html (588 words)

	Osmolality of small-volume intravenous admixtures -- Wermeling et al. 42 (8): 1739 -- American Journal of Health-System ...
		The theoretical osmolality of 218 hypothetical admixtures of various concentrations of 34 injectable drugs in 50- or 100-mL quantities of 5% dextrose injection or 0.9% sodium chloride injection was calculated using sodium chloride equivalents.
		Calculated osmolality values for all admixtures were less than 400 mOsm/kg when 0.45% sodium chloride injection or sterile water for injection was used as the diluent.
		For drugs with high osmolalities, 0.45% sodium chloride injection or sterile water for injection may be used as the diluent.
	www.ajhp.org /cgi/content/abstract/42/8/1739 (274 words)

	MedFriendly.com: Osmolality
		Osmolality is expressed in units of measurement known as osmoles or milliosmoles (one thousandth of an osmole), per 1000 grams (a very small unit of weight) of solvent.
		An osmole is the weight of the molecules (the smallest naturally occurring particles of a substance) that make up a solute, divided by the number of particles or ions (electrically charged particles) that they separate in a solution.
		Osmolality would be too high because there would be less liquid in comparison to the amount of solute (something dissolved in the liquid).
	www.medfriendly.com /osmolality.html (833 words)

	Osmolality, Serum - Evanston Northwestern Healthcare (Site not responding. Last check: )
		Ethanol ingestion is a common cause of increased osmolality and is responsible for most osmolal gap testing.
		Serum sodium and osmolality increase in dehydration; the serum sodium:serum osmolality ratio remains within normal limits.
		Osmolality measurement by freezing point depression is also indifferent to permeability of solutes to cell membranes.
	www.enh.org /healthandwellness/bioterrorism/ch102000.aspx?lid=1093 (290 words)

	Plasma osmolality \| What it is and How it influences Health?
		At a plasma osmolality of less than 275 mosm/kg, which usually represents a plasma Na + concentration of less than 135-137 mmol/L, there is essentially no circulating ADH.
		Ingestion of a water load leads to an initial reduction in the plasma osmolality, thereby diminishing the release of ADH.
		Water loss resulting from sweating is followed by, in sequence, a rise in both plasma osmolality and ADH secretion, enhanced water reabsorption, and the appropriate excretion of a small volume of concentrated urine.
	www.online-vitamins-guide.com /nutrition-articles/osmolality-plasma.htm (319 words)

	PLASMA OSMOLALITY : Encyclopedia Entry
		Plasma osmolality is a measure of the concentration of substances such as sodium, chloride, potassium, urea, glucose, and other ions in human blood.
		As cell membranes in general are freely permeable to water, the osmolality of the extracellular fluid (ECF) is approximately equal to that of the intracellular fluid (ICF).
		If the ECF was to become too hypertonic, water would readily fill surrounding cells, increasing their volume and potentially lysing them (cytolysis).
	www.bibleocean.com /OmniDefinition/Plasma_osmolality (265 words)

	Serum Osmolality - [Medical Test] (Site not responding. Last check: )
		A serum osmolality test measures the amount of chemicals dissolved in the fluid portion of blood (serum).
		A serum osmolality test is done on a blood sample taken from a vein.
		Serum osmolality is controlled partly by a hormone called antidiuretic hormone (ADH).
	www.healthnowny.com /kbase/topic/medtest/hw203418/descrip.htm (166 words)

	Osmolality
		It is useful to define effective ECF osmolality, because the osmoregulatory mechanisms that adjust water balance in normal individuals are determined primarily by changes in cell volume that result from variations in effective ECF osmolality.
		The osmoreceptors are situated in the supraoptic and paraventricular nuclei of the hypothalamus, whereas the thirst center is in the organum vasculosum of the anterior hypothalamus.
		In both circumstances, the serum sodium and the serum osmolality are reduced, whereas the urinary osmolality is inappropriately high with respect to the reduced serum osmolality.
	www.meddean.luc.edu /lumen/meded/mech/cases/case25/osmolality.htm (2348 words)

	Carilion - Serum Osmolality - [Medical Test]
		A serum osmolality test measures the amount of chemicals dissolved in the fluid portion of blood (serum).
		A serum osmolality test is done to evaluate electrolyte and water balance.
		In response to an increase in serum osmolality, ADH is released, which reduces the amount of water excreted by the kidneys.
	www.carilion.com /kbase/htm/hw20/3418/hw203421.htm (231 words)

	Welcome to Osmolality.com \| Presented by Advanced Instruments, Inc
		Osmolality is used in a wide range of clinical and industrial applications.
		Such diverse applications range from rapid assessment of renal capacity, the state of hydration in burn and trauma patients, and monitoring of irrigation fluid uptake in surgical cases.
		In this section you will be able to learn more about the science of osmolality along with a number of related topics.
	www.osmolality.com (199 words)

	Thirst - Patient UK
		In pregnancy, the thirst stimulus is thought to be set at a lower osmolality, which leads to increased intake of water and an increase in circulating blood volume.
		Once two sequential urine osmolalities vary by less than 30mosmol or if the weight drops by more than 3%, 5 units of aqueous vasopressin is given subcutaneously.
		In nephrogenic diabetes insipidus (due to resistance of renal tissue to the action of ADH), ADH levels are normal to elevated, and the kidney fails to respond to exogenous ADH during the water deprivation test.
	www.patient.co.uk /showdoc/40002192 (1196 words)

	Osmolality: The Test (Site not responding. Last check: )
		Osmolality may also be measured in a Water Deprivation test, if the doctor needs to distinguish between two different types of diabetes insipidus or a condition called psychogenic polydipsia in which a patient drinks water compulsively.
		If the plasma osmolality increases, meaning that the blood is too concentrated, water is retained by the kidneys so that a concentrated urine is produced and the blood is diluted to normalise the plasma osmolality.
		Interpretation of an abnormal plasma osmolality often requires measurement of urine osmolality to ascertain whether the body is producing an appropriately concentrated or dilute urine.
	www.labtestsonline.org.uk /understanding/analytes/osmo/test.html (738 words)

	Early morning urine osmolality in nonenuretic and enuretic children. (Site not responding. Last check: )
		Early morning urine osmolality in 1,453 nonenuretic children and 144 enuretic children was measured in a population study.
		Early morning urine osmolality was lower in nonenuretic children aged 3-4 years than in those aged over 5 years.
		No significant difference in early morning urine osmolality was observed between nonenuretic children and enuretic children at any age.
	www.galenicom.com /medline/article/8971881/au:Kawauchi+A (161 words)

	Health Library - (Site not responding. Last check: )
		A serum osmolality test is done to evaluate electrolyte and water balance.
		ADH is produced by a part of the brain called the hypothalamus and is released by the pituitary gland into the blood.
		In response to an increase in serum osmolality, ADH is released, which reduces the amount of water excreted by the kidneys.
	www.sparks.org /library/healthguide/en-us/MedicalTests/topic.asp?hwid=hw203418 (241 words)

	Hyperventilation with Dry Air Increases Airway Surface Fluid Osmolality in Canine Peripheral Airways -- FREED and DAVIS ...
		During 200 ml/min ventilation of the model airway, the osmolality of the fluid recovered by pledget was consistently higher
		The mean tracheal ASF sample volume was 4 ± 0.8 µl and tracheal ASF osmolality averaged 322 ± 11 mmol/kg.
		ASF osmolality determined from filter paper pledgets recovered during DAC was strongly correlated with
	ajrccm.atsjournals.org /cgi/content/full/159/4/1101 (4976 words)

	VISCOSITY, OSMOLALITY AND PH-VALUES OF ARTIFICIAL TEARS (Site not responding. Last check: )
		In order to establish a rational basis for the selection of the most appropriate preparation, pharmacological parameters such as viscosity, osmolality, and pH-value, which are thought to be relevant with respect to efficacy and local tolerability, were determined.
		Methods: Viscosity, osmolality and pH-value of 25 commercially available artifical tear solutions were determined according to the appropriate assays given in the Deutschen Arzeimittelbuch (DAB 10, V. NT V.6.25; DAB 10, V.6.3).Additionally, pH-values were determined in 4 gel-like preparations.
		Conclusion: In contrast to osmolality values, which do not represent a major problem, determination of pH-values revealed that 25% of the artificial tear preparations are in the acid range.
	www.dog.org /engl/abstract97/P447.html (231 words)

Try your search on: Qwika (all wikis)