Search Results
Results 501 - 550 of 1813
< 6 7 8 9 10 11 12 13 14 15 16 >
Fletcher S J - - 2000
A 41-year old primigravida underwent caesarean section because of foetal distress following prostin induction of labour. Intraoperative coagulopathy, haemorrhage and hypotension necessitated a hysterectomy. Subsequently, she developed respiratory and renal failure, requiring mechanical ventilation and haemodialysis. She made a full recovery. The likely diagnosis was amniotic fluid embolism (AFE), a ...
Andres R L - - 2000
The objective of this paper is to evaluate the impact of recent cocaine use on umbilical cord blood gas values in cocaine-dependent pregnant women who received formal prenatal care. Ninety-two cocaine-dependent pregnant women receiving comprehensive prenatal care were divided into two groups, with patients in Group A (n = 35) ...
Bernal A L - - 2000
The factors responsible for the onset of labor in women are not well understood but it is clear that parturition is associated with increased production of prostanoids and release of arachidonic acid by intrauterine tissues. Pulmonary surfactant is secreted from the fetal lung into the amniotic fluid where its concentration ...
Haugen G - - 2000
A fetus with the sonographic appearance of echogenic and enlarged lungs and dilated trachea and bronchi, indicating laryngotracheal obstruction, is reported. Additionally, the fetus had ascites and subcutaneous edema and the amniotic fluid volume was reduced. Doppler flow investigation of the systemic venous circulation revealed signs of heart failure, and ...
Milnerowicz H - - 2000
To assess the exposure to tobacco smoke in pregnant women with oligohydramnios, idiopathic or caused by premature rupture of the membranes (PROM), cotinine concentrations were measured, using enzyme-like immunosorbent assay (ELISA). In women with idiopathic oligohydramnios (22-31 weeks of gestation), serum cotinine concentration was 1010 +/- 445 micrograms/L which provides ...
Strauss A - - 2000
The amniotic band syndrome represents a prime example of exogenous disruption of an otherwise normal fetal development. It may be a sequel of invasive diagnostic procedures such as amniocentesis or fetal blood sampling. A 38-year-old gravida II, para II delivered a morphologically normal male stillborn at term. The pregnancy history ...
Hofmeyr G J - - 2000
Oligohydramnios (reduced amniotic fluid) may be responsible for malpresentation problems, umbilical cord compression, concentration of meconium in the liquor, and difficult or failed external cephalic version. Simple maternal hydration has been suggested as a way of increasing amniotic fluid volume in order to reduce some of these problems. The objective ...
Malatesta M - - 2000
Prostate-specific antigen (PSA), a kallikrein-like serine protease until recently thought to be prostate specific, has been demonstrated in various nonprostatic tissues and body fluids. PSA has been also found in human endometrium and amniotic fluids, even if the significance of this novel expression is unclear. In this study, we have ...
Sohl B D - - 1999
OBJECTIVE: Severe fetal anemia is associated with polyhydramnios in both human and ovine fetuses. This study examined the relationship between varying degrees of anemia and amniotic fluid volume in fetal sheep. STUDY DESIGN: Eleven long-term catheterized ovine fetuses at 126 +/- 1 days' gestation (mean +/- SE) were subjected to ...
Holcberg G - - 1999
OBJECTIVE: The purpose of this study was to study was to determine the effect of meconium stained amniotic fluid on the vasculature of isolated perfused human placental cotyledon. STUDY DESIGN: Isolated placental cotyledons were dually perfused. Fetal perfusion pressure was used as an index of vascular resistance. Meconium stained amniotic ...
Rogers M S - - 1999
A prospective observational study assessed the predictive value of three techniques for amniotic fluid volume assessment on umbilical cord arterial lipid peroxide levels and acid-base balance. Women with singleton, term, cephalic presentation, and an initially normal fetal heart rate tracing were recruited. All pregnancies had the largest vertical pocket (LVP), ...
Chauhan S P - - 1999
OBJECTIVE: Our purpose was to perform a meta-analysis of studies on the risks of cesarean delivery for fetal distress, 5-minute Apgar score <7, and umbilical arterial pH <7.00 in patients with antepartum or intrapartum amniotic fluid index >5.0 or <5.0 cm. STUDY DESIGN: Using a MEDLINE search, we reviewed all ...
Jauniaux E - - 1999
A new multiparameter sensor that combines electrochemical and fibre-optic technology was used for continuous in-vivo investigation of pH, carbon dioxide partial pressure (PCO(2)), oxygen partial pressure (PO(2)), bicarbonate concentration (HCO(3)(-)), base excess, and oxygen saturation (O(2)Sat) early in human pregnancy. The sensor was inserted into the amniotic cavity and the ...
Dawson E B - - 1999
Studies of maternal amniotic fluid and serum at delivery have revealed the presence of toxic metals or deficiencies of essential metals associated with high-risk pregnancy. Essential and toxic metal levels were studied in 29 preeclamptic and 101 normal pregnancies. The authors grouped the samples according to the following gestation ages: ...
Brost B C - - 1999
OBJECTIVE: The aim of this study was to determine whether the amniotic fluid index differs according to whether a fetus is in breech or cephalic presentation. STUDY DESIGN: Between January 1995 and April 1996 the amniotic fluid index was measured both immediately before and after attempted external cephalic version. Amniotic ...
Verspyck E - - 1999
The aim of our study was to determine if the amniotic fluid alpha-fetoprotein (AFP) level could be a useful predictive biochemical marker of pregnancy outcome. Amniotic fluid AFP measurement was prospectively carried out over a three-year period. After excluding factors susceptible to modifying AFP measurements, 587 subjects with gestational age ...
Marx C E - - 1999
OBJECTIVE: Neurotrophins are proteins that promote neuronal growth and differentiation. In this pilot study we determined whether the neurotrophins nerve growth factor, brain-derived neurotrophic factor, and neurotrophin-3 were present in amniotic fluid specimens to begin to elucidate their developmental regulation. We also explored associations between neurotrophin levels and central nervous ...
Manchanda R - - 1999
OBJECTIVE: To determine whether fetal erythropoietin (Epo) concentrations are increased in pregnancies extending beyond 41 weeks' gestation and whether this is influenced by the presence of meconium-stained amniotic fluid. METHODS: Epo concentrations were measured in 116 fetal umbilical cord blood samples from otherwise uncomplicated pregnancies between 37 to 43 weeks' ...
Foulon W - - 1999
OBJECTIVE: Our purpose was to evaluate different methods of diagnosing congenital toxoplasmosis prenatally by amniocentesis and cordocentesis. STUDY DESIGN: In a retrospective multicenter study, we investigated consecutive women who had seroconversion for Toxoplasma gondii during pregnancy and who underwent either amniocentesis or cordocentesis or both to obtain a prenatal diagnosis ...
Quan C P - - 1999
PROBLEM: Except for the description of a secretory immunoglobulin (S-Ig) of a low size, no recent study has investigated the molecular status of antibodies in the human amniotic fluid. METHOD: After separation with a high performance chromatography, we analyzed the different isotypes of amniotic Igs by immunoblotting and ELISA. RESULTS: ...
Ohnishi Y - - 1999
The purpose of this study was to evaluate whether hepatocyte growth factor (HGF) concentrations in the early second-trimester amniotic fluid predict fetal growth at birth. HGF and insulin-like growth factor-I (IGF-I) concentrations in the early second-trimester amniotic fluid were measured in 12 pregnancies with small for gestational age (SGA) infants, ...
Athayde N - - 1999
OBJECTIVE: RANTES (regulated on activation, normal T cell expressed and secreted), a potent and versatile chemokine, is capable of attracting monocytes, lymphocytes, basophils, and eosinophils. This cytokine has been implicated in the regulation of the inflammatory response and in the recruitment of macrophages to the implantation site in early pregnancy. ...
El-Haddad M A - - 1999
Human and ovine fetuses demonstrate an enhanced rate of swallowing, an activity critical for amniotic fluid regulation. Fetal swallowing may be modulated by both systemic and central factors. Nitric oxide (NO) is a central neuromodulator that has been localized to brain regions regulating thirst and swallowing. We sought to determine ...
Benacerraf B R - - 1999
PURPOSE: We studied whether a 10-MHz transvaginal transducer improves the diagnostic certainty that a small intrauterine fluid collection is a true gestational sac. METHODS: Over a 6-week period, women who presented with a positive pregnancy test and a fluid collection (devoid of any characteristics such as yolk sac or fetal ...
Babinszki A - - 1999
OBJECTIVE: We sought to compare obstetric and neonatal complications among great-grand multiparous, grand multiparous, and multiparous women. STUDY DESIGN: One hundred thirty-three great-grand multiparas, 314 grand multiparas, and 2195 multiparas who were delivered of their infants between 1988 and 1998 were selected for the study. To facilitate comparison, the patients ...
Tayyar M - - 1999
OBJECTIVE: To determine the effects of maternal age, parity and fetal sex on amniotic fluid (AF) and maternal serum (MS) levels of CA 125, CA 19.9, CA 15.3 and carcinoembryonic antigen (CEA). SUBJECTS AND SETTING: MS samples for CA 125, CA 19.9, CA 15.3 and CEA assay were obtained from ...
Heinonen S - - 1999
OBJECTIVE: This study was designed to investigate the association between the concentrations of maternal serum hCG and amniotic fluid erythropoietin during the second trimester of pregnancy. METHODS: In a prospective case-control study, 42 consecutive singleton pregnancies showing unexplained elevated serum hCG concentrations (>2.0 multiples of the median, MoM) in Down's ...
Magann E F - - 1999
BACKGROUND: This study was done to determine the accuracy of the 2 x 2 cm pocket identifying low amniotic fluid (AF) volume in singleton and twin pregnancies. METHODS: The AF volume was evaluated by ultrasonography for the presence of a 2 x 2 cm pocket before amniocentesis. The actual AF ...
Egberts J - - 1999
OBJECTIVE: To determine the relationship between gestational age or the Liley index (the severity of fetal hemolysis) and the amniotic fluid total nitrite (NOx), cyclic guanosine 3',5 'monophosphate (cGMP) and dimethylarginine (DMA) concentrations. We hypothesized that the concentrations of these components change because of fetal growth or adaptation to fetal ...
Fullerton J T - - 1999
The anatomic and physiologic changes of pregnancy complicate a woman's response to elective or emergency surgical intervention. Alterations related to perioperative positioning, fluid volume replacement, effects of medicinal and anesthetic agents, and maternal/fetal assessment are discussed. Emotional and ethical/legal concerns are considered. A postoperative assessment guideline is presented.
Deprest J A - - 1999
Operative fetoscopy may be limited by its relatively high associated risk of preterm prelabour rupture of membranes. The objective of this study was to study closure techniques of the access site for fetoscopy in the mid-gestational rabbit. A total of 32 does (288 amniotic sacs) at 22 days gestational age ...
Deans K J - - 1999
The etiology of bowel wall changes in infants with gastroschisis remains unknown. Currently, debate focuses on the relative roles of amniotic fluid exposure versus that of intestinal ischemia. The authors report five cases of prenatally diagnosed gastroschisis in which the bowel was exposed to amniotic fluid for up to 21.3 ...
Mock P - - 1999
Recent observations based on immunohistochemistry and RT-PCR demonstrate that early placenta insulin-like peptide (EPIL), encoded by the INSL4 gene, is present in the placenta during gestation. In the present study, we report on the development of a specific immunoassay, entirely based on two monoclonal anti-peptide antibodies (mAbs), and its use ...
Berg T G - - 1999
OBJECTIVE: To determine if treatment of a positive amniotic fluid culture for mycoplasmal colonization obtained at genetic amniocentesis is associated with improved pregnancy outcome. STUDY DESIGN: A retrospective analysis of 2718 genetic amniocentesis specimens cultured for Ureaplasma/Mycoplasma was undertaken. Specimens were obtained between March 1993 and January 1997. The Irvine ...
Banks E H - - 1999
OBJECTIVE: Our purpose was to determine whether a borderline amniotic fluid index observed during antepartum testing confers a significant risk of adverse perinatal outcome. STUDY DESIGN: We conducted a retrospective review of all patients entering antepartum testing at Los Angeles County-University of Southern California Women's and Children's Hospital during a ...
Magann E F - - 1999
OBJECTIVE: This study was undertaken to determine whether women with high-risk pregnancies and an amniotic fluid index of </=5 cm require labor induction to prevent adverse perinatal outcomes. STUDY DESIGN: All women at high risk at >/=34 weeks' gestation with an amniotic fluid index of </=5 cm were admitted to ...
Magann E F - - 1999
OBJECTIVE: Our goal was to compare the accuracy of the amniotic fluid index and the 2-diameter pocket technique with respect to accuracy in predicting an adverse pregnancy outcome among patients at high risk undergoing antenatal testing. STUDY DESIGN: All women with high-risk pregnancies and intact membranes who underwent antenatal testing ...
Gilbert W M - - 1999
OBJECTIVE: To examine the risk factors and pregnancy outcomes associated with 53 cases of amniotic fluid embolism that occurred in California during the 2-year period January 1, 1994 to December 31, 1995. METHODS: Data were obtained from a computerized database that contains linked records from the vital statistics birth certificate ...
Seffah J D - - 1999
OBJECTIVE: To find out whether amniotic fluid index (AFI) could be used to screen late pregnancies which presented at the clinic for the first time for any adverse perinatal outcome. DESIGN: Retrospective study that compared patients with AFI > or = 5 with those with AFI > or = 5. ...
Marinoni E - - 1999
OBJECTIVE: To determine whether adrenomedullin levels in amniotic fluid were associated with preterm labor. METHODS: We measured immunoreactive adrenomedullin in amniotic fluid collected by amniocentesis from 36 women with clinical diagnosis of preterm labor or preterm premature rupture of membranes (PROM) and from 18 normal pregnant women. RESULTS: Amniotic fluid ...
Bashiri A - - 1999
BACKGROUND: Intra-amniotic infection is an important cause of preterm delivery and interleukin-6 (IL-6) determination was recently applied for identification of microbial invasion of the amniotic cavity. Our aim was to determine the levels of IL-6 in culture-positive amniotic fluids at genetic amniocentesis and to evaluate their significance in relation to ...
Gherman R B - - 1999
Introduction of bacteria into the amniotic cavity has been associated with oral sex through an ascending infectious route. Previous reports have implicated both Capnocytophaga and Fusobacterium nucleatum via this process. We report a case of Streptococcus viridans intra-amniotic infection occurring at 25 weeks' gestation. Patient questioning revealed a close temporal ...
Figueroa-Damián R - - 1999
BACKGROUND: High concentrations of interleukin-6 (IL-6) have been demonstrated in amniotic fluid (AF) from women with intra-amniotic infection. Recent studies have reported that IL-6 levels in AF were related to an increase in neonatal morbidity; moreover, higher IL-6 plasma levels have been observed in neonates with sepsis. METHODS: A cohort ...
Vuorela-Vepsäläinen P - - 1999
To study vascular endothelial growth factor (VEGF) and placenta growth factor (PlGF) concentrations and their possible binders, serum from 22 non-pregnant and 55 pregnant women (15 at weeks 10-13; 40 at term), umbilical vein (n = 24) and artery (n = 13) and amniotic fluid (a pool of 50 at ...
Muttukrishna S - - 1999
OBJECTIVE: The feto-placental unit is the major source of circulating concentrations of inhibin A and activin A in human pregnancy. The aim of this study was to measure the amniotic fluid concentrations of inhibin A, inhibin B, activin A and follistatin in pregnancies bearing male and female fetuses. DESIGN AND ...
Denison F C - - 1999
Secretory leukocyte protease inhibitor is a potent inhibitor of neutrophil function, a mediator of mucosal immunity and an inhibitor of NF|gkB regulated inflammatory responses. However, its source, function and regulation within the uterus during pregnancy and at parturition are not well defined. In amniotic fluid, the concentration of secretory leukocyte ...
McKenna D S - - 1999
OBJECTIVE: To assess the efficacy of managing pregnancies complicated by anti-Kell isoimmunization using the methods developed for evaluating anti-Rh-D isoimmunization. METHODS: We reviewed 156 anti-Kell-positive pregnancies seen from 1959 to 1995, which were managed with serial maternal titers, amniotic fluid deltaOD450 determination, and funipuncture. Data on maternal titers, paternal phenotypes, ...
Albuquerque C A - - 1999
OBJECTIVE: The ovine model is frequently utilized to extrapolate data regarding fetal and amniotic fluid dynamics to human pregnancy. The ovine amnion is highly vascularized, facilitating intramembranous exchange of water and solutes between the amniotic fluid and fetal plasma. In comparison, the relatively avascular human amniotic membrane may have a ...
Gratacós E - - 1999
OBJECTIVES: The aim of the study was to determine whether the pregnant rabbit at mid gestation could be used as a suitable in vivo model for the study of membrane defects after invasive procedures. STUDY DESIGN: Pregnant rabbits at gestational ages of 22 and 18 days (term is 32 days' ...
Riley S C - - 1999
Matrix metalloproteinases (MMPs) are important enzymes in tissue remodelling, a key event for the development of the fetal membranes and placenta and establishing the feto-maternal interface during early pregnancy. This study has examined the secretion of the gelatinases, MMP-2 (72 kDa) and MMP-9 (92 kDa), and the endogenous tissue inhibitors ...
< 6 7 8 9 10 11 12 13 14 15 16 >