Results 261 to 270 of about 2,180,608 (342)

Physiology of Amniotic Fluid Volume Regulation

Clinical Obstetrics and Gynecology, 1997
Although there are fairly wide variations AFV normally undergoes characteristic changes across gestation in which it increases from 10-20 ml at 10 weeks gestation to average 800 ml at 24 weeks. Little change occurs from then until near term when AFV begins to decrease, and large decreases can occur in postterm pregnancies. Across gestation, 95% of AFVs
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Fluid Volume Conductance for Determination of Bladder Volume

2006 3rd IEEE/EMBS International Summer School on Medical Devices and Biosensors, 2006
Clinical urodynamics is the present standard for diagnosing voiding dysfunction. The nonphysiological nature of this exam often hinders symptom reproduction in the laboratory. Currently, a small intrabladder device is being developed to conduct ambulatory urodynamics.
Bradley C. Gill, Paul C. Fletter, Paul J. Zaszczurynski, Alfred Perlin, Daniel Yachia, Margot S. Damaser   +5 more
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The dialysis of small volumes of fluid

The Analyst, 1969
A simple, non-metallic closure for small dialysis tubing is described.In a smaller-scale procedure the 5 to 50 µl of solution to be dialysed are placed on a circle of cellophane, 7·5 mm in diameter, held by suction to the upper end of a vertical tube containing water or saline, which may or may not be continuously renewed.
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Direct spectrophotometric estimation of amniotic fluid volume

American Journal of Obstetrics and Gynecology, 1968
Abstract Coomassie's blue was used in the estimation of amniotic fluid volume in 13 patients prior to volumetric measurement at cesarean section. Amniotic fluid volume was calculated by dye dilution, determined by direct spectrophotometric analysis. The optimum time for sampling was found to be 30 minutes after injection.
S J, Zwirek, R M, Pitkin
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Guiding principles of fluid and volume therapy

Best Practice & Research Clinical Anaesthesiology, 2014
Fluid therapy is a core concept in the management of perioperative and critically ill patients for maintenance of intravascular volume and organ perfusion. Recent evidence regarding the vascular barrier and its role in terms of vascular leakage has led to a new concept for fluid administration.
Dita, Aditianingsih, Yohanes W H, George
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Amniotic fluid volume increase after amnioinfusion of a fixed volume

American Journal of Obstetrics and Gynecology, 1990
Amnioinfusion of 250 ml of normal saline solution was performed in 30 laboring women at greater than or equal to 37 weeks' gestation with oligohydramnios as defined by an amniotic fluid index of less than or equal to 5 cm. A total of 50 amnioinfusions were performed.
T H, Strong, G, Hetzler, R H, Paul
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Regulation of Amniotic Fluid Volume: Evolving Concepts

2014
Studies in late gestation fetal sheep have provided several new insights into the regulation of amniotic fluid (AF) volume (AFV): There are four quantitatively important amniotic inflows and outflows that include fetal urine production, lung liquid secretion, swallowing, and intramembranous absorption. Of these, AFV is regulated primarily by modulating
Robert A, Brace, Cecilia Y, Cheung
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Regulation of extracellular fluid volume and osmolality

Annals of Biomedical Engineering, 1980
In health, both the total amount and the distribution of water and electrolytes in the body are controlled within narrow limits. While intercompartmental water fluxes depend solely on physical driving forces, the latter are determined by complex circulatory feedback mechanisms that manipulate capillary pressure, and by active transport mechanisms that ...
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Volume of fluid (VOF) method for the dynamics of free boundaries

, 1981
C. W. Hirt, B. D. Nichols
semanticscholar   +1 more source

Estimation of extracellular fluid volume in children

Pediatric Nephrology, 2012
Many equations have been developed to estimate various body fluid volumes from height and weight, but few have been developed for children. The aim of this study was to compare four height/weight formulae for estimating extracellular fluid volume (eECV) in children against measured extracellular fluid volume (mECV).The mECV was obtained from plasma Cr ...
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