Search Results
Results 301 - 350 of 416
< 1 2 3 4 5 6 7 8 9 >
Rickwood A M - - 1995
OBJECTIVE: To determine whether children presenting clinically with pelvi-ureteric junction obstruction had fetal hydronephrosis. PATIENTS AND METHODS: Forty-three children, born during or after 1985, presented clinically with pelvi-ureteric junction obstruction. Records of the maternal pregnancies were reviewed with reference to the findings of any fetal ultrasonography. RESULTS: In 25 patients ...
Meuli M - - 1995
The aim of this study was to determine whether the fetal alimentary tract shares the unique scarless healing properties of fetal skin. Full-thickness incisional gastric wounds were created and sutured closed in fetal lambs at 60, 75, and 120 days' gestation (full term, 145 days), and in adult control sheep. ...
Ohel G - - 1995
The rate of fetal urine production and the incidence of fetal micturition was compared in periods of fetal sleep and awakeness. Sonography and fetal heart rate monitoring were concomitantly performed on 12 normal term pregnancies. Fetal bladder volumes were serially calculated, and the rate of urine production and micturition were ...
Low J A - - 1995
OBJECTIVE: Our purpose was to demonstrate the predictive value of clinical risk scoring and fetal assessment for intrapartum fetal asphyxia. STUDY DESIGN: Intrapartum fetal asphyxia was defined by an umbilical artery buffer base < 34 mmol/L. The predictive value of 20 antepartum and intrapartum risk factors was examined in 1909 ...
Whyte R K - - 1995
In recent years clinicians caring for sick preterm infants have come to depend on pulse oximetry to avoid hyperoxia, which means assuming saturation values for critical levels of oxygen tension. This prediction is made difficult by the shape of the haemoglobin-oxygen dissociation curve at critical values for arterial pO2 and ...
Flake A W - - 1995
Fetal surgery, as defined for the purpose of this chapter, is the act of opening the gravid uterus, surgically correcting a fetal abnormality, and returning the fetus to the uterus for postoperative recovery and continued gestational development. By this definition, human fetal surgery has now been performed for more than ...
Reppert S M - - 1995
In mammals, a unidirectional communication exists between the biological clocks of the mother and fetus. As a biological clock begins oscillating in the suprachiasmatic nuclei of the fetus, redundant circadian signals entrain the fetal clock to the prevailing light-dark cycle. Recent studies have revealed an activatable dopamine system within the ...
Oga M - - 1994
An ultrasonographic examination revealed increased fetal bladder size as well as fetal bilateral hydronephrosis at 13-weeks' gestation. Diagnosis of the fetal urethral obstruction was made. Repeated ultrasonography was undertaken from the 13th to through 16th weeks of gestation. Percutaneous puncture with aspiration and laboratory analysis of fetal urine was performed ...
Johnson N - - 1994
Experimental pulse oximetry devices, similar to the existing systems used in adult and neonatal monitoring, can be used on the fetus to provide safe, and rapid information about oxygenation. They have been calibrated using fetal lambs and validated in human cross-sectional studies. Experiments have shown that fetal oxygen saturation decreases ...
Sasse V - - 1994
There is still controversy about the question of which approach is best to treat tubal infertility: microsurgery, laparoscopic treatment, or in vitro fertilization. Our study comprised 161 patients with distal tubal occlusion. Various instruments (argon laser, CO2 laser, Nd:YAG laser, monopolar electrical needle, scissors) were used for laparoscopic salpingostomy, and ...
Dequesne JG - - 1994
Since 1985, more than 500 CO2 laser laparoscopic procedures have been done, including treatment of endometriosis, adhesiolysis, salpingo-ovariolysis and salpingoneostomy. The most frequent indication was endometriosis. The results were as follows. Endometriosis: 85 patients total. In AFS Stage 1-2: 17/30 (57%) ongoing pregnancies; AFS Stage 3:18/37 (48%) ongoing pregnancies; and ...
Levitsky L L - - 1994
To understand glycogenesis in the fetal hepatocyte, we examined glucose transport in cultured fetal and adult male rat hepatocytes. GLUT-1 mRNA was detected in fetal hepatocytes at isolation but in adult hepatocytes only after culture. GLUT-1 mRNA was more abundant in fetal than in adult hepatocytes (P < 0.005). GLUT-1 ...
Luks F I - - 1994
Video-endoscopic surgical treatment of the fetus may, in the future, become an alternative to open fetal operation. Six 95-day-old fetal lambs were examined through intrauterine endoscopy using amnioinfusion and specially designed balloon-tipped cannulas. The fetuses were monitored endoscopically for oxygen saturation, heart rate and temperature throughout the procedure. With a ...
Hallak M - - 1994
The objective was to assess the association of fetal liver function tests in various (noninfectious) abnormal fetal conditions. Liver function tests and complete blood counts were evaluated in 72 consecutive fetal blood specimens obtained by cordocentesis. The indications for cordocentesis included: fetal malformation (24), red blood cell alloimmunization (23), possible ...
Lee A - - 1994
OBJECTIVE: A new technique using three-dimensional ultrasonography and its performance in fetal malformations imaging was evaluated. STUDY DESIGN: A case of fetal complex malformation with bipartite scrotum combined with hypospadias and duodenal atresia is reported. RESULTS AND CONCLUSION: Three-dimensional ultrasonography provides important additional information in diagnosing fetal malformations.
Patel M D - - 1994
This article reviews developmental skull anatomy, especially as it relates to the formation of cranial sutures and fontanelles, and demonstrates the appearance of these structures on prenatal sonograms, illustrating the framework these structures provide to enable one to accurately identify components of the fetal skull. Examples are provided to illustrate ...
Megerian G - - 1994
Cordocentesis is a feasible, reliable, and safe method for fetal evaluation of a wide variety of disorders. It has allowed for in-utero treatment of fetal red cell isoimmunization and opened future routes for other fetal therapies. In this review, results of a multicenter intrauterine fetal blood sampling registry will be ...
Collins J E - - 1994
Today, as we approach the 21st century, research is being conducted in fetal surgery. Given the selection process and the limitations of our present technology, only a few malformations can be managed through a fetal surgical intervention. As the "fetal specialists" develop new techniques and educate others, nurses must remain ...
Divon M Y - - 1994
The primary objective of fetal surveillance is to prevent antenatal fetal deaths, which still account for greater than one half of perinatal mortality. Several techniques for assessing fetal well-being are available to the practicing obstetrician, including fetal movement counting, nonstress testing, contraction stress testing, fetal biophysical assessment with real-time sonography, ...
Abdelrahman M M - - 1993
Developmental changes of Cu, Mn, Zn, and Se in fetal liver and kidney and the intracellular distributions were determined. Fetuses were obtained from crossbred beef heifers (n = 25) that were slaughtered at different stages of pregnancy. Fetal age was estimated from crown to rump measurements. Selenium concentration of fetal ...
Hedrick M H - - 1993
Intensive management of the fetus is limited by our inability to achieve access to the fetal circulation. Using laparoscopic surgery, we can maintain long-term access to the fetal circulation by extra-amniotic catheterisation of chorionic vessels in third-trimester monkeys and early-gestation sheep. We can sample fetal blood, continuously measure blood pressure, ...
Harrison M R - - 1993
Our experimental and clinical experience with open fetal surgery has provided invaluable lessons regarding optimal maternal-fetal anesthesia, hysterotomy, fetal exposure techniques, fetal monitoring, reliable steps for in utero repair of life-threatening defects, and secure methods for uterine closure. Most importantly, open fetal surgery has been performed in both nonhuman primates ...
Jennings R W - - 1993
Diagnosis and treatment of fetal disease processes has advanced dramatically, but the ability to monitor the fetus in utero remains rudimentary. Open fetal operation provides a unique opportunity to correct life-threatening fetal abnormalities, but it also places the fetus at risk. Continuous intraoperative and post-operative fetal electrocardiographic monitoring may decrease ...
Estes J M JM Fetal Treatment Program, University of California, San - - 1992
In utero repair of several life-threatening malformations in the human fetus is now a clinical reality, yet fetal surgery still poses significant risks to both the mother and the unborn child. Preterm labor is a major problem and is directly related to the large hysterotomy required for fetal exposure. Endoscopic ...
Cetin I - - 1992
Eleven studies of fetal serine fluxes were performed in chronically catheterized fetal lambs by continuous infusion of [1-13C]- and [U-14C]serine into a fetal brachial vein. At tracer serine steady state, samples were collected from the fetal abdominal aorta, umbilical vein, fetal hepatic vein, and fetal femoral vein and from the ...
Umstad M - - 1992
Intrapartum vibroacoustic stimulation testing (VAST) had a sensitivity of 100%, a specificity of 59.6% and a positive predictive value of 27.6% for the detection of fetal acidosis in this study of 60 cases. The use of VAST could significantly reduce the requirement for fetal capillary blood sampling. However, fetal scalp ...
Park Y C - - 1992
An efficient algorithm detecting the presence of a fetal QRS complex is presented. The proposed fetal QRS detection method computes the averaged magnitude of the difference between the fetal ECG signal and the reference signal to detect the fetal QRS event. The detected fetal QRS complexes are exponentially averaged to ...
van der Weyde M P - - 1992
Ritodrine infusion to fetal lambs causes numerous metabolic perturbations including hypoxemia. To investigate these changes further and to elucidate a mechanism for the development of hypoxemia, ritodrine was infused at rate of 2.6 micrograms/min into nine chronically catheterized fetal lambs for 8, 12 or 24 hr. Plasma levels of ritodrine ...
Merrill D C - - 1992
Fetal therapy continues to be an exciting yet controversial field. In utero treatment of a variety of fetal conditions is discussed: parvovirus B19 infection, fetal thyroid dysfunction, fetal ovarian cysts, twin-twin transfusion syndrome, and fetal hemolytic disease. Fetal surgery continues to be controversial. Despite considerable publicity, fetal surgery appears to ...
Morgan M A - - 1992
OBJECTIVE: The null hypothesis of this study is that the fetal-pelvic index will not determine the presence or absence of fetal-pelvic disproportion in 137 nulliparous women at high risk for fetal-pelvic disproportion. STUDY DESIGN: This study was undertaken by comparing the blinded fetal-pelvic index values and two other methods of ...
Hueston W J - - 1991
Deciding when to intervene in a pregnancy can be a complicated problem. Several methods of antepartum fetal surveillance can be helpful in the assessment of fetal well-being. The nonstress test is an effective screening tool for fetal well-being. Newer techniques such as the biophysical profile, fetal vibroacoustic stimulation and Doppler ...
Kuwabara Y - - 1991
The development of fetal diagnostic techniques has facilitated the analysis of pathological conditions in abnormal fetuses. This has led to systematic fetal therapy for such diseases as fetal hydronephrosis and fetal struma. In this report, general characteristics and problems of fetal therapy are discussed and several representative diseases that have ...
Gardosi J O - - 1991
Application of pulse oximetry to intrapartum monitoring was investigated in 105 women. No adequate reading could be obtained in 44 cases. Two major sources of artifact, related to probe apposition and signal processing, were identified and excluded. The average arterial oxygen saturation from the fetal scalp was 82% (SD 6%), ...
Harrison M R - - 1991
The diagnosis and treatment of human fetal defects has evolved rapidly over the past decade due to improved fetal imaging techniques and better understanding of fetal pathophysiology derived from animal models. The detection of a fetal anomaly may now lead to a change in the timing of delivery, a change ...
Sawa R - - 1991
Adenosine is known to inhibit nonshivering thermogenesis in adult brown fat. These experiments were undertaken to test whether fetal adenosine, normally present in high concentrations, suppresses lipolysis in utero and then falls after birth, permitting thermogenesis to begin. To test this hypothesis, we measured fetal plasma adenosine concentration [ADO] using ...
Hepper P G - - 1990
The study of fetal behaviour may have important implications for the prenatal diagnosis of handicap. Since behaviour reflects the integrity of the fetal neural system the examination of fetal behaviour enables neurological assessment of the fetus. This paper discusses present methods of assessing fetal well-being and their shortfalls and then ...
Manning F A - - 1990
The cumulative experience with fetal biophysical profile scoring as a method for antepartum fetal risk assessment is now extensive. The cumulative data indicate that the method is sensitive for recognizing both the normal and compromised fetus. Moreover, the method appears to offer the advantage of grading various degrees of fetal ...
Nelson J M - - 1990
The development of fetal surgical techniques has made the antenatal correction of congenital defects possible. These techniques have evolved from trials with animal models, permitting increasingly sophisticated operations with low morbidity and mortality. Experimental models range from large animals offering longer gestations but with single pregnancies and high cost, to ...
Hill L M - - 1989
With the fetal stomach utilized as a general marker, targeted-imaging of the fetal abdomen was initiated to locate the pancreas. Overall, the pancreas was seen in 77 of 149 cases (51.7%). Menstrual age and the position of the fetus were significant factors in determining the frequency of pancreatic visualization.
Soothill P W - - 1989
Cordocentesis for prenatal diagnosis has allowed extensive progress in our knowledge of human fetal physiology. It is now being used to guide obstetric management of acquired fetal diseases (e.g., timing of delivery and intrauterine therapy). The most established indications are blood disorders (e.g., fetal anemia and thrombocytopenia) and further investigation ...
Reed K L - - 1989
The study of arrhythmias enables the clinician not only to treat and effectively prevent some types of fetal morbidity, but also to understand the normal human fetal physiology. It can be anticipated that the study of arrhythmias in the fetus will expand, if the work currently performed in the child ...
Johnson M D - - 1989
Fetal surgery, in utero, is now a viable option for some congenital conditions due to recent advances in ultrasound and microsurgical technology. Previous reports of anesthesia for such procedures have focused on spinal or epidural conduction techniques. General endotracheal anesthesia may have several advantages in this setting. In addition to ...
Neeper-Bradley T L - - 1989
Gravid Swiss Webster dams were injected via tail vein with a single (1.1, 2.2, or 3.3 mmol/kg) dose of ethyl carbamate (urethane) on days 13-17 of pregnancy. Relative sister chromatid exchange (SCE) responses in maternal bone marrow vs. individual fetal liver cells were assessed. In addition, in order to evaluate ...
Muller J - - 1988
The authors report a case of acute fetal distress after fetal blood sampling, performed for fetal karyotype because of a precocious and symmetrical fetal growth retardation without maternal hypertension or ultrasonographic evidence of fetal malformation. A cesarean section performed because of acute fetal distress showed the newborn to be hypotrophic, ...
Cabero L - - 1988
553 cases of intrapartum fetal acidosis (pH less than 7.25) were treated with a betamimetic agent (ritodrine 250-300 micrograms/min). In 403 cases (72.8%), an improvement of fetal pH greater than 0.05 pH U was observed. Improvement was comparable in cases where the cause of fetal distress was abnormal uterine activity ...
Morgan M A - - 1988
The fetal-pelvic index was recently introduced as an accurate method of prospectively identifying the presence or absence of fetal-pelvic disproportion. In that report the ability to detect fetal-pelvic disproportion in patients with macrosomic fetuses was not specifically addressed. The objective of this study is to compare the efficacy of three ...
Opitz J M - - 1988
It is postulated that, in the nevoid basal cell carcinoma syndrome, independent mosaic pleiotropic action of the mutant gene on morphogenesis and histogenesis produces primary malformations of midline and nonmidline structures and dysplasias more or less highly predisposed to cancer development. However, in focal dermal hypoplasia and the Bartsocas-Papas syndrome, ...
Cugini P - - 1988
With technological progress, blood pressure monitoring has become a procedure largely applied in medical practice but not adequately systematized under a biostatistical viewpoint. This paper shows the complexity and importance of the biomathematical approach and its clinical implications in preeclamptic pregnancy. Data series were analyzed by means of noninferential and ...
Leiser R - - 1988
The microvascular architecture of the pig placenta was studied by serial semithin histological sections for light microscopy, which were compared with scanning electron microscopy of artificially exposed materno-fetal contact surfaces as well as of vessel casts prepared from the maternal, fetal, and combined maternal and fetal sides. The superficial reliefs ...
Mitchell M D - - 1987
The formation of arachidonate lipoxygenase products by uterine and intrauterine tissues of sheep in the last third of gestation has been evaluated. Maternal and fetal cotyledon, myometrium and fetal membrane exhibited evidence of arachidonate 5-, 12-, and 15- lipoxygenase activities. The major lipoxygenase product formed by fetal membrane and fetal ...
< 1 2 3 4 5 6 7 8 9 >