Results 211 to 220 of about 9,050,595 (259)
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Amniotic Fluid and the Clinical Relevance of the Sonographically Estimated Amniotic Fluid Volume
Journal of Ultrasound in Medicine, 2011The amniotic fluid volume (AFV) is regulated by several systems, including the in-tramembranous pathway, fetal production (fetal urine and lung fluid) and uptake (fetal swallowing), and the balance of fluid movement via osmotic gradients. The normal AFV across gestation has not been clearly defined; consequently, abnormal volumes are also poorly ...
Everett F, Magann +2 more
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Effect of Maternal Hydration on Amniotic Fluid Volume
Obstetrics & Gynecology, 2003To estimate the effects of maternal intravenous hydration on amniotic fluid volume in normal pregnancies.Women undergoing an amniocentesis for the evaluation of fetal lung maturity before an elective cesarean delivery were eligible to participate. An amniotic fluid index (AFI) was obtained before the amniocentesis, and at the time of the amniocentesis ...
Everett F, Magann +5 more
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International Congress Series, 2005
Abstract After a brief introduction concerning the physiology of amniotic fluid circulation, the different methods of volume estimation (eyeballing, maximum vertical depth, amniotic fluid index) are discussed. We conclude with the work-up in cases of oligo- and polyhydramnios.
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Abstract After a brief introduction concerning the physiology of amniotic fluid circulation, the different methods of volume estimation (eyeballing, maximum vertical depth, amniotic fluid index) are discussed. We conclude with the work-up in cases of oligo- and polyhydramnios.
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Amniotic fluid volume: Fluid dynamics and measurement technique
Seminars in Ultrasound, CT and MRI, 1993Evaluation of amniotic fluid volume is an important aspect of obstetrical ultrasound. Several methods are currently used to describe amniotic fluid volumes. The most common are the subjective assessment of fluid and the semiquantitative methods. The reproducibility of these methods is excellent in experienced hands. Because of the multiple methods used
B E, Hashimoto, D J, Kramer, L, Brennan
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Amniotic pressure in disorders of amniotic fluid volume.
Obstetrics and gynecology, 1990Amniotic pressure was measured in 49 pregnancies with abnormal quantities of amniotic fluid. Among 17 with polyhydramnios, the pressure was always above the normal mean for gestation and exceeded the upper limit of normal in nine. In polyhydramnios, amniotic pressure correlated positively with the depth of the deepest pool (r = 0.65, P = .04) and ...
Fisk, N.M. +4 more
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Physiology of Amniotic Fluid Volume Regulation
Clinical Obstetrics and Gynecology, 1997Although 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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AMNIOTIC FLUID VOLUMES IN EARLY PREGNANCY
BJOG: An International Journal of Obstetrics & Gynaecology, 1972SummaryAmniotic fluid volumes were measured in 46 cases of therapeutic abortion by hysterotomy. These are combined with four other published series to give figures for over 160 cases measured during the first half of pregnancy.
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Amniotic fluid volume expansion
Current Obstetrics & Gynaecology, 1995Expansion of amniotic fluid volume is usually achieved by instillation of sterile fluid into the amniotic cavity by either the transabdominal or transcervical route. However, it has recently been demonstrated that oral hydration of the mother can have the same effect.
Sarah J. Bower, Nicholas M. Fisk
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Amniotic fluid volume dynamics
Fetal and Maternal Medicine Review, 1991From the moment of implantation until delivery some 37 weeks later, the human embryo or fetus is surrounded by fluid. Initially this fluid is a transudate from maternal and embryonic tissues which provides nutrients for the growing embryo. Starting in early pregnancy, the fetal kidneys begin to contribute substantial quantities of urine to the amniotic
William M Glibert +2 more
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CLINICAL UTILITY OF AMNIOTIC FLUID VOLUME ASSESSMENT
Obstetrics and Gynecology Clinics of North America, 1998Abnormal amniotic fluid volume is associated with increased maternal risk and perinatal morbidity and mortality. Until the advent of ultrasonography, the invasive nature of amniotic fluid volume assessment limited its clinical utility. Refinements in quantifying the noninvasive sonographic assessment of oligohydramnios and hydramnios have improved the ...
J E, Larmon, B S, Ross
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