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Topic: GFR

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	National Kidney Foundation: Kidney Learning System
		A decrease in GFR precedes the onset of kidney failure; therefore a persistently reduced GFR is a specific indication of CKD.
		At lower levels of GFR, calibration errors are less likely to have a significant impact on the estimated level of GFR or on the stage of CKD.
		Drug-induced reduction in GFR raises the serum creatinine concentration, and is detected by the MDRD Study equation.
	www.kidney.org /professionals/KLS/gfr.cfm (2615 words)

	GFR Projects (Site not responding. Last check: 2007-10-21)
		GFR is the longest established PE installer in Western Australia and carried the largest inventory and range of polyethylene butt welding equipment in WA.
		GFR was faced with the major challenge to design, supply and install a turnkey system including 12 high capacity submersible pumps, manifolds, valving (over 200 butterfly and ball valves) and pipe work ranging in sizes from 90mm to 630mm, all within a eight-week period before the opening of the crayfish season.
		GFR in conjunction with ABB Engineers set about redesigning the drainage system to include PE pipe from 90mm to 800mm, polyethylene manholes and junction pits and a wide array of fittings designed to maintain flow in a gravity system - an application where PE pipe had not been previously used.
	www.gfr.com.au /projects.htm (1884 words)

	What is my glomerular filtration rate (GFR)? - Kidney - DoctorNDTV
		GFR is estimated from a prediction equation that takes into account not only the serum creatinine but also some other variables that include age, gender, race and body size.
		Studies from the sub-continent have shown that the normal GFR value for a healthy Indian adult appears to be much lower than that accepted for a western population.
		The mean GFR value of a young healthy Indian adult is 81.4 ± 19.4 ml/min/1.73 m2 body surface area, which is significantly different from the normal value of 109-125 ml/min for a western population.
	www.doctorndtv.com /FAQ/detailfaq.asp?id=8564 (310 words)

	Control of GFR
		The difference between the contribution of tubular pressure effect and of the effect of TGF-mediated afferent arteriolar resistance on changes in GFR in the two situations, a) and b), is shown in Fig 4 (from Am J Physiol 1994, 266: R1544-R1550), in which the change in Henle loop flow is denoted by deltaQlp.
		The major effect of the vascular TGF-response is to stabilize GFR and tubular pressure- and flow rate ("autoregulation" of GFR).
		Pathophysiological changes in inulin clearance may be due to either a change in the glomerular filtration process, or to a change in the tubular reabsorptive capacity, or to a decrease in the number of functioning nephrons.
	www.mfi.ku.dk /undervisning/lecture-notes/gfr-en (1896 words)

	National Kidney Foundation: Glomerular Filtration Rate (GFR)
		GFR - glomerular filtration rate is the best test to measure your level of kidney function and determine your stage of kidney disease.
		Calculate your Glomerular Filtration Rate (GFR), which is the best way to tell how much kidney function you have.
		Your GFR tells your doctor your stage of kidney disease and helps the doctor plan your treatment.
	www.kidney.org /kidneydisease/ckd/knowGFR.cfm (1700 words)

	GFR and creatinine clearance comments
		The GFR prediction methods attempt to allow for this variation by using the patients sex and age.
		The measured GFR (using the fall in blood concentration of an injected tracer) is the most accurate.
		GFR measured from urea and creatinine concentrations 24h urine collections are accurate if the collection is performed properly (start collection from an empty bladder, collect all urine passed up to and including a complete voiding exactly 24 hours after start).
	www.renal.org /Resources/GFRjamesT.html (452 words)

	National Kidney Disease Education Program Home Page
		Your GFR has been estimated from a routine measurement of creatinine in your blood.
		However, a low GFR with a value below 60 suggests some kidney damage has occurred.
		Your doctor will use your GFR number as one clue to how well your kidneys are working.
	www.nkdep.nih.gov /educresources/understanding_gfr.htm (290 words)

	[No title]
		GFR is a calculation of how efficiently the kidneys are filtering wastes from the blood.
		A traditional GFR calculation requires an injection into the bloodstream of a substance that is later measured in a 24-hour urine collection.
		Some medical laboratories may make the GFR calculation when a creatinine value is measured and include it on their lab report.
	www.intelihealth.com /IH/ihtPrint/WSIHW000/23847/25944/273457.html?d=dmtContent&hide=t&k=basePrint (924 words)

	GFR (Site not responding. Last check: 2007-10-21)
		It is one way to measure remaining kidney function and it is the best test to measure the level of kidney function and to determine the stage of kidney disease.
		GFR is calculated using a mathematical formula that compares your age, sex, and race to your serum creatinine levels.
		The normal GFR in both kidneys in adults is 120 to 125 mL/min.
	www.transonic.com /gfr.shtml (213 words)

	Postgraduate Medicine: Estimating the glomerular filtration rate
		GFR is a direct measurement of kidney function (2) and is reduced before the onset of symptoms of kidney failure (3).
		GFR is estimated from the urinary clearance of an ideal filtration marker, defined by
		Use of the serum creatinine level as an index of GFR rests on three important assumptions: (1) creatinine is an ideal filtration marker whose clearance approximates GFR, (2) creatinine excretion rate is constant among persons and over time, and (3) measurement of serum creatinine is accurate and reproducible across clinical laboratories.
	www.postgradmed.com /issues/2001/12_01/manjunath.htm (3308 words)

	NCEMSF - Resources
		GFR is an all student volunteer service that provides emergency medical care for all students, faculty and staff on campus.
		Also, since GFR arrives on the scene long before a county ambulance, GFR can notify appropriate authorities when their service is not needed, relieving some of the burden of the county services.
		GFR now boasts a membership of over 50 volunteers that contribute their free time in order to make the campus safer.
	www.ncemsf.org /resources/localnews/shownews.ems?item=156 (322 words)

	National Kidney Foundation: Newsroom
		GFR is also the best tool to gage a patient's stage of disease, enabling doctors to plot out the most appropriate course of treatment.
		Although they conclude that GFR is the best way to measure kidney function, they note that estimates of GFR can be less accurate in people with unusual body changes, such as muscle wasting, which can affect levels of creatinine.
		GFR is also less useful in people with rapidly changing kidney function, and in those without CKD, whose GFRs are still relatively high.
	www.dejavu.org /cgi-bin/get.cgi?ver=93&url=http%3A%2F%2Fwww.kidney.org%2Fnews%2Fnewsroom%2Fnewsitem.cfm%3Fid%3D324 (634 words)

	Clinical Trial: Delaying the Progression of Diabetic Nephropathy in Pima Indians
		Their GFR slopes average -0.49 ml/min/month (95% confidence interval, -0.91 to -0.07), and 11 of them (8 men, 3 women) are hypertensive (systolic blood pressure >=140 mm Hg, diastolic blood pressure >=90 mm Hg).
		GFR slope (ml.min/month) will be computed, and the slope prior to the initiation of an ACE inhibitor will be compared with that obtained during treatment.
		Their GFR slopes average -0.49 ml/min/month (95% confidence interval, -0.91 to -0.07), and 11 of them (8 men, 3 women) are hypertensive (systolic blood pressure greater than or equal to 140 mm Hg, diastolic blood pressure greater than or equal to 90 mm Hg).
	www.clinicaltrials.gov /ct/show/NCT00353600?order=39 (653 words)

	Managing Modules
		GFR provides a standard approach for modules to manage their user-settable parameters, which are called module settings.
		A truth-value that enables you to specify whether GFR prompts the user to confirm or prevent the launch of an upgrade procedure on a module.
		A truth-value that enables you to specify whether GFR prompts the user to confirm or prevent the saving of an upgraded module after all required upgrade procedures have been called.
	www.cs.fsu.edu /g2/g2utldoc/gfrug/modules4.htm (856 words)

	HDCN: Review of abstract by Juillard et al. Is it worth indexing GFR to body surface area? (1996 ASN Meeting) (Site not responding. Last check: 2007-10-21)
		is clearly a response to the intriguing and provocative study from another group, Turner et al.(1) The latter assert that indexing of variables such as GFR for BSA is "devoid of statistical foundation" and may at times lead to the appearance of spurious correlations, and in other circumstances may obscure the presence of true correlations.
		GFR was measured by inulin clearance in 396 normal adults and children.
		A strong positive correlation was found between GFR and BSA, which had a Y-intercept not significantly different from zero.
	www.hdcn.com /a6/6asn1666.htm (349 words)

	GFR estimation in paediatric oncology -- PHILLIPS and NICOLIN 82 (5): 428 -- Archives of Disease in Childhood
		GFR estimation in paediatric oncology -- PHILLIPS and NICOLIN 82 (5): 428 -- Archives of Disease in Childhood
		The audit involved 110 GFR estimations on 42 patients, aged 5 months to 18 years, 48% of whom had haematological malignancies.
		We agree that routine estimations of GFR are unhelpful in paediatric oncology patients.
	adc.bmjjournals.com /cgi/content/full/82/5/428c (341 words)

	Spring 1998 News > Practical Test for GFR
		James C. McConnell, D.V.M. Determination of glomerular filtration rate (GFR) is an important aspect of the evaluation of kidney function in the diagnostic approach to patients with suspected renal disease.
		Measurement of renal clearance of inulin has been the standard for determination of GFR but is seldom used in clinical practice because it is difficult and time consuming to perform.
		Because it is not protein bound and is totally excreted by the kidney through the process of glomerular filtration, it is gaining widespread recognition as the new standard for use in the estimation of GFR in humans and domestic animals.
	www.southpaws.com /news/98-1-GFR.html (387 words)

	Glomerular filtration rate (GFR) is the most widely used indicator... (Site not responding. Last check: 2007-10-21)
		The possibility of a variation in GFR and the capacity of kidney to augment its level of function suggests a renal functional reserve.
		The authors concluded that a reduction in stress GFR preceded the fall in baseline GFR and the rise in serum creatinine.
		Stress GFR in, at least these high risk donors, will be desirable so as to pick up the donors who are likely to have renal compromise subsequently, though they might be having a normal resting GFR.
	www.indegene.com /Int/FeatArt/indIntFeatArt30.html (1776 words)

	What is GFR? (Kidney Beginnings)
		Using these results made it possible to create a formula that predicted the GFR using demographic characteristics such as age, race, gender and the serum creatinine level.
		This classification enables one to determine what level of CKD is present for each individual patient, to define a specific action plan and to easily reference the widely-accepted guidelines of the NKF.
		The MDRD GFR formula is complicated to compute even when using a hand calculator, but the program is readily available on hand held devices (PDAs) at www.kidney.org, and on the web at nephron.com, nkdep.nih.gov or www.kidney.org.
	www.aakp.org /aakp-library/GFR (649 words)

	GFR (Site not responding. Last check: 2007-10-21)
		GFR staff on-site at Pilbara Iron Tom Price recently achieved the safety milestone of 700 consecutive days 'lost time injury free', and GFR's team at ERA Ranger Uranium NT is also approaching 600 consecutive days LTIF.
		GFR has installation underway for the $5.8 million Grey Mare bore-field pipeline for Minara Resources, which at 150 kilometres in length, is the longest large-bore pipeline, mainly 630mm HDPE, yet built in Western Australia...
		GFR Group is Australia’s most experienced and longest established fabricator, supply merchant, designer, installer of PE and PE piping systems and manufacturer of superior performance valves.
	www.gfr.com.au (230 words)

	GFR - Webled.com
		GFR Estimation using the MDRD Equation (Modification of Diet in Renal Disease...
		[ GFR is calculated from serum and urine creatinine; it requires a blood ]...
		GFR is better estimated by considering both serum cystatin C and creatinine...
	www.webled.com /GFR.htm (312 words)

	Absolute GFR
		The relative GFR of a person is thus normalized to a certain body surface area, which allows the use of virtually the same reference values for males and females, adults and children.
		The relative GFR is suitable for assessing the kidney function of patients and for following the development of the kidney function.
		Traditionally, the serum or plasma concentrations of creatinine and cystatin C are used as indicators for a patient's relative GFR.
	www.klinkem.lu.se /GFReng.htm (362 words)

	Creatinine clearance
		The creatinine clearance test compares the level of creatinine in urine with the creatinine level in the blood, usually based on measurements of a 24-hour urine sample and a blood sample drawn at the end of the 24-hour period.
		The amount of filtrate made in the kidney depends on the amount of blood that passes through the glomeruli and the ability of the glomeruli to act as filters.
		GFR; Glomerular filtration rate ; glomerular filtration rate; glomerular filtration rate calculator; estimated glomerular filtration rate; filtration glomerular rate renal system; gfr; gfr calculator; gfr calculation; mdrd gfr; normal gfr; gfr test; gfr blood test; estimated gfr; mdrd gfr calculator; calculate gfr; gfr kidney; gfr application; gfr estimate; 700 adcom gfr; estimation of gfr
	www.geocities.com /medipedia/003611.htm (874 words)

	Validating GFR Information via Data Mining and Practical Aspects of Embedding GFR Data in the LIS/HIS (Site not responding. Last check: 2007-10-21)
		We have been reporting estimated GFR's since January 2004 and only report the GFR when the creatinine is raised.
		I think the estimated GFR would be very useful in the light of biological variation of creatinine values and the limited value of reference limits.
		The extent of this variation is of sufficient magnitude to adversely impact the estimation of GFR resul;ting in the miss-classification of patients.
	www.aacc.org /access/gfr/index.asp?page=qanda (3184 words)

	GFR- Reefer Container Leasing Services (Site not responding. Last check: 2007-10-21)
		GFR Leasing Corporation ("GFR") specializes in the leasing and sales of Intermodal Refrigerated Containers ("reefers").
		GFR is one of the few container sales and leasing companies which deals primarily in refrigerated container equipment.
		GFR agents are located in the following areas: Central America, South America and Europe.
	www.gfrlease.com /aboutgfr.html (147 words)

	eMJA: Calculating glomerular filtration rate in a young man with a large muscle mass
		In such patients, formal measurement of GFR by radioisotope nuclear renal scan should be undertaken.
		Nuclear medicine scans provide validated direct measures of GFR and are useful in circumstances of extremes of body size or age, high or low dietary intake of creatinine or creatine supplements, and patients with muscle disease or atrophy.
		Symptoms, treatment options and rate of GFR decline are among a multitude of factors that must be taken into account in the decision to initiate dialysis.
	www.mja.com.au /public/issues/185_04_210806/tou11052_fm.html (1582 words)

	RedNova News - Science - Susceptibility of Glomerular Filtration Rate Estimations to Variations in Creatinine ... (Site not responding. Last check: 2007-10-21)
		GFR was estimated using both the Modification of Diet in Renal Disease (MDRD) and Cockcroft and Gault formulae: a ^sup 51^Cr-EDTA GFR estimation served as the reference GFR method.
		GFR was estimated from a single ^sup 51^Cr-EDTA injection and three blood samples (90,180 and 270 min after injection) using mono- exponential analysis with Brochner-Mortenson's correction.12 GFR measurements were undertaken by qualified physicists in a nuclear medicine department accredited by the Institute of Physical Sciences in Medicine.
		Overall, GFR estimated using the Cockcroft and Gault formula produced a slight negative bias compared with the reference method, whereas the MDRD formula produced significantly positively biased estimates of GFR irrespective of the creatinine method used.
	www.rednova.com /news/display?id=130894 (3624 words)

	Hypertension Online Slides - gfr, ACE inhibitor, albuminuria, proteinuria
		In chronic nephropathies with proteinuria of =3 grams/24 hrs, ramipril safely reduces proteinuria and the rate of GFR decline to an extent that seems to exceed the reduction expected for the degree of blood- pressure lowering.
		Among the ramipril-assigned patients, percentage reduction in proteinuria was inversely correlated with decline in GFR (P=0.035) and predicted the reduction in risk of doubling of baseline creatinine or end stage renal failure (18 ramipril vs 40 placebo, P=0.04).
		A higher rate of baseline urinary protein excretion was associated with a more rapid mean GFR decline in the placebo than in the ramipril group, and with a larger difference in the mean rate of GFR decline between the two treatment groups.
	www.hypertensiononline.org /slides2/slide01.cfm?q=gfr&pg=1 (1638 words)

	Maltronint.com - Estimation of Ccr and GFR - Body Fat Analyser, Body Fat Analyzer, Fat Analysis, Body Composition ...
		BioScan was used to estimate GFR in 177 adult renal patients (100 female and 77 males) with different degrees of renal
		GFR measured as the renal clearance of 99m TC-DTPA ranged 4.4 - 242 ml/min.
		Estimation of GFR is appropriate for the evaluation of renal function and progression of Kidney disease (REFER TO PAPER)
	www.maltronint.com /popup_pages/estimation_of_gfr_and_creatinine.htm (194 words)

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