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Results 551 - 600 of 1292
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Biester E M - - 1997
OBJECTIVE: Our goal was to examine whether a correlation exists between the Revised Trauma Score assigned on admission and pregnancy outcome, as well as whether the Revised Trauma Score has any predictive value for optimal duration of cardiotocographic monitoring necessary to detect immediate adverse pregnancy outcome. STUDY DESIGN: A retrospective ...
Qasim S M - - 1997
OBJECTIVE: To analyze whether first-trimester embryonic (fetal) heart rates (FHR) are useful in predicting pregnancy outcome for infertility patients. METHODS: Patients in a university-based reproductive endocrinology and infertility practice were studied prospectively. Infertile women who achieved clinical pregnancy underwent first-trimester transvaginal sonographic evaluation, and FHR in patients achieving viable pregnancies ...
Elliott J P - - 1997
BACKGROUND: Fetal movement is a predictor of fetal well-being. Fetal movement in response to a stimulation (fetal recoil) has been tested, and all fetuses that demonstrated recoil had umbilical arterial blood pH at least 7.20. CASES: We used fetal recoil to allow labor in three women with fetal heart tracings ...
Ruach M - - 1997
In two cases the application of vibratory acoustic stimulation, at term, resulted in severe fetal bradycardia of 4 and 5 min duration. The spontaneous return to a normal fetal heart rate pattern allowed normal vaginal deliveries of healthy neonates. Transient fetal bradycardias that follow vibratory acoustic stimulation should not be ...
Lunshof S - - 1997
In a discordant anencephalic twin the hypothesis was tested that the fetal brain is necessary for the expression of a diurnal rhythm in fetal heart rate. Fetal heart rate recordings were made over a 24 h period in a discordant anencephalic twin pregnancy and in three normal twin pregnancies. Cosinor ...
Barton J R - - 1997
We examined the effect of vibroacoustic stimulation on periodic and nonperiodic fetal heart rate (FHR) parameters in fetuses not meeting Dawes-Redman criteria utilizing computerized analysis. Antepartum FHR analysis was performed using the Oxford Sonicaid System 8000 package (Oxford Sonicaid Ltd., Chichester, UK). Patients not meeting Dawes-Redman criteria for reactivity after ...
Bernardes J - - 1997
OBJECTIVE: To evaluate interobserver agreement in visual analysis of each cardiotocographic event. METHODS: Three experts independently divided 16 antepartum and 17 intrapartum cardiotocograms into baseline segments, accelerations and decelerations, according to the FIGO guidelines. Baseline segments were further classified as having normal, reduced or increased variability and decelerations as early, ...
Zimmer E Z - - 1997
The objective of this study was to determine the variation in first-trimester fetal size and fetal heart rates in multifetal pregnancies, and to study the effect of fetal reduction on the surviving fetal heart rate. Fetal crown-rump length and fetal heart rates were measured in 44 patients with multifetal pregnancies ...
Wilcox M A - - 1997
OBJECTIVE: To test the hypothesis that increasing the sampling interval affects the intrapartum fetal heart rate (FHR) variability measurement. METHODS: Fetal electrocardiograms were obtained from women in labor. Using the peak of the fetal R wave, the R-R interval and FHR were calculated on a beat-to-beat basis. Retrospectively, the original ...
Buyon J P - - 1997
OBJECTIVE: Congenital heart block (CHB), associated with antibodies to SS-A/Ro and SS-B/La, is most often detected between 18 and 24 weeks of gestation, yet the maternal heart is unaffected. We recently described an alternatively spliced 52-kd SS-A/Ro messenger RNA (mRNA) derived from the skipping of exon 4 which encodes a ...
Loghis C - - 1997
In the present study 45 patients with intrapartum cardiotocograms showing prolonged fetal bradycardia during the early second stage of labor were included. Bradycardia persisted for 180 s or more with either rapid or prolonged return to baseline, without loss of variability and rise of baseline fetal heart rate (FHR). The ...
- - 1997
Obstetrical data management systems (OBDMSs) are computer systems designed to interface with fetal and maternal monitors. This allows monitoring and charting records to be created and maintained electronically and to be viewed from centralized workstations. In theory, these systems could eliminate paper record keeping from the obstetrics department altogether, although ...
Murotsuki J - - 1997
OBJECTIVE: Our purpose was to test the hypothesis that chronic placental insufficiency and intrauterine growth restriction in fetal sheep causes a decrease in the number of fetal heart rate accelerations and fetal heart rate variability. STUDY DESIGN: Chronically catheterized fetal sheep were embolized (n = 6) daily with 15 to ...
Bozóki Z - - 1997
Power spectrum and chaos theory analysis, methods recently applied to fetal surveillance, may offer an effective tool for recognising fetal hypoxia and consequential collapse of fetal homeostasis earlier than at present. However, strict continuity and high precision of input data is an indispensable prerequisite. If one overlooks this requirement the ...
Gunn A J - - 1997
Hypothermia has been proposed as a neuroprotective strategy. However, short-term cooling after hypoxia-ischemia is effective only if started immediately during resuscitation. The aim of this study was to determine whether prolonged head cooling, delayed into the late postinsult period, improves outcome from severe ischemia. Unanesthetized near term fetal sheep were ...
Okamura M - - 1997
OBJECTIVE: Our purpose was to assess the applicability of fetal heart rate (FHR) monitoring to detect fetuses at risk of developing periventricular leukomalacia (PVL). METHODS: FHR tracings obtained for babies delivered under 33 weeks' gestation and with a birth weight under 2000 g were assessed for baseline heart rate, variability, ...
Izumi A - - 1997
To determine the relationship between abnormal fetal heart rate (FHR) patterns, fetal oxygen content by reflectance pulse oximetry, and the effects of maternal oxygen administration, 158 intrapartum women consisting of 120 women with normal FHR patterns, and 38 women with varying degrees of variable FHR decelerations were examined. A new ...
Koike T - - 1997
We encountered a case of fetal bradycardia (57 bpm) induced by heart block. The continuous intravenous administration of ritodrine to a mother to treat fetal brady-cardia at 28 weeks of gestation successfully increased the fetal ventricular rate by 15 bpm (from 57 to 72 bpm). Pregnancy was continued for 10 ...
Mantel R - - 1997
OBJECTIVES: To learn which fetal heart rate (FHR) parameters change with gestational age and to demonstrate the relation with fetal rest-activity states. STUDY DESIGN: FHR and fetal movements were recorded in 12 uncomplicated pregnancies from 26 weeks gestational age onwards. Seventy-two FHR recordings of 60 min duration were analysed by ...
Anyaegbunam A - - 1997
OBJECTIVE: To investigate parameters of fetal well-being (characteristics of nonstress test, NST, and antepartum fetal heart rate, FHR, patterns) and selected neonatal outcomes in pregnant women on methadone maintenance. STUDY DESIGN: A matched case-control study of methadone-treated women receiving prenatal and intrapartum care at a Bronx municipal hospital during 1992-1994. ...
Gull I - - 1996
OBJECTIVE: To estimate the existence and degree of fetal accumulation of acid during end-stage bradycardia as reflected by the base deficit. This may set a criterion for proper intervention during labour. SETTING: Maternity unit of the Tel Aviv Medical Centre. SUBJECTS: Forty-three consecutively born term infants whose mothers were delivered ...
Soyeur D J - - 1996
In the context of a large program of prenatal echocardiographic detection of fetal heart disease, special attention was paid to the in utero detection and identification of fetal heart rate disorders. This article focuses on 18 cases of tachycardiac fetuses. It provides information on how to identify the nature of ...
Kim H D - - 1996
BACKGROUND: The intermediate filament (IF) desmin provides support for contractile machinery in muscle cells, and vimentin plays an important role in maintaining the stability of mesenchymal cells and in signal transduction. However, development of IFs in heart tissue during intrauterine life in human is not well established. METHODS: In the ...
DiPietro J A - - 1996
The ontogeny of fetal autonomic, motoric, state, and interactive functioning was investigated longitudinally in a sample of 31 healthy fetuses from 20 weeks through term. Fetal heart rate and movement data were collected during 50 min of doppler-based fetal monitoring at 6 gestational ages. Measures of fetal heart rate and ...
Fletcher K L - - 1996
Diurnal periodicities of cardiorespiratory function were monitored between 144 and 156 days of gestation (term = 175 days) in six chronically instrumented fetal baboons. For each fetus, 5-11 days of electrocardiographic and tracheal fluid pressure data were summarized as hourly means of fetal heart rate (FHR), standard deviation of FHR, ...
Numminen H - - 1996
BACKGROUND AND PURPOSE: We aimed to determine trends in stroke incidence, mortality rates, case-fatality rates, and their relation in Finland. METHODS: We compared the results of three population-based stroke registers that included first-ever strokes in people aged > or = 15 years. Two registers were kept in Espoo-Kauniainen, the first ...
Reed N N - - 1996
A retrospective study was performed at the Queens Medical Centre, Nottingham, UK to evaluate the potential value of PR interval analysis of the FECG compared to conventional intrapartum assessment with fetal heart rate monitoring. Two-hundred sixty-five labours were selected for monitoring. Outcome was assessed by the number of fetal scalp ...
Todros T - - 1996
Cardiotocography (CTG) is widely used despite the fact that its diagnostic accuracy is far from satisfying. This is due, among other reasons, to the great intra- and interobserver variation in reading the fetal heart rate tracings. Computerized analysis might be a means to overcome the latter problem. OBJECTIVE: the present ...
van Wijngaarden W J - - 1996
OBJECTIVES: The evaluation of the changes in the relationship of the PR interval and fetal heart rate during prolonged fetal compromise in sheep at levels of acidosis comparable to those seen during human fetal compromise and to see whether these changes are potentially of use in the detection of fetal ...
Jonker F H - - 1996
OBJECTIVE: To characterize fetal heart rate (FHR) patterns of nonacidotic (N-AC) and acidotic (AC) calves during the expulsive stage of parturition. ANIMALS: 32 calves born to heifers, either unassisted or by moderate traction. PROCEDURE: Cardiotocograms (CTG) evaluated qualitatively (visual) and quantitatively by a moving window technique (width 10, shift 5 ...
Wright J W - - 1996
OBJECTIVE: To evaluate in a controlled, blind fashion, using both subjective and objective criteria, whether MgSO4 is associated with clinically significant changes in fetal heart rate monitoring. STUDY DESIGN: Fetal heart rate tracings were prospectively collected before and after MgSO4 loading in 50 preterm labor patients. Three obstetricians, blind to ...
Phillips K - - 1996
Fetal electrocardiogram waveform analysis was used to assess the effect of epidural bupivacaine on the fetal myocardial conducting system by evaluating its effect on the PR interval, RR interval, T/QRS ratio and the PR-RR correlation coefficient. There were no significant changes in either the PR interval or the PR-RR correlation ...
Mitra A G - - 1996
OBJECTIVE: Our purpose was to determine whether transvaginal Doppler auscultation is more sensitive than transabdominal auscultation for the detection of fetal heart rate in the first trimester of pregnancy. STUDY DESIGN: In a prospective study 141 patients between 6 weeks and 11 weeks 6 days of gestation underwent both transvaginal ...
Brenton D P - - 1996
By November 1994, 39 pregnancies had been completed in phenylketonuric mothers. Dietary control was post-conception in 6 and 2 of these offspring died of congenital heart disease and 1 other needed surgery for coarctation. There were no heart defects in the 34 offspring of the 33 pregnancies following preconception diet ...
Levy H L - - 1996
Maternal phenylketonuria (PKU) is teratogenic and results in birth defects that include microcephaly, mental retardation, congenital heart disease, and intrauterine growth retardation. Treatment with a low phenylalanine diet can prevent or reduce the severity of the complications. Optimal benefit, however, requires frequent monitoring with fetal ultrasonography as a critical element. ...
Skupski D W - - 1996
OBJECTIVE: To identify the descriptive clinical practice of maternal-fetal medicine specialists when faced with severe intrapartum fetal heart rate (FHR) abnormalities (as determined by continuous electronic fetal monitoring). METHODS: All regular members of the Society of Perinatal Obstetricians (maternal-fetal medicine specialists) were sent a survey questionnaire on the topic of ...
van Wijngaarden W J - - 1996
Advances in microprocessing technology have made fetal ECG analysis a feasible adjunct to fetal surveillance. Time interval and morphology changes of the FECG occur during fetal hypoxia. The use of these changes to detect a fetus at risk of intrapartum asphyxia awaits validation in terms of both future and ongoing ...
Genuis S - - 1996
OBJECTIVE: To determine if the antenatal fetal heart rate is a reliable predictor of fetal sex, if there is any correlation between "maternal intuition" and fetal gender, and if maternal intuition favors one sex over the other. STUDY DESIGN: Two hundred twelve consecutive maternity patients with singleton gestations underwent a ...
Van Geijn H P - - 1996
FHR monitoring has been the subject of many debates. The technique, in itself, can be considered to be accurate and reliable both in the antenatal period, when using the Doppler signal in combination with autocorrelation techniques, and during the intrapartum period, in particular when the FHR signal can be obtained ...
Guntheroth W G - - 1996
We reviewed the ultrasonographic studies and the clinical course of 22 fetuses with supraventricular tachycardia to determine whether the heart rate alone could serve as a basis for conservative management. Hydrops was not encountered with heart rates under 230 beats per minute. The conditions of all 22 fetuses stabilized without ...
Watson W J - - 1996
Neuromuscular blocking agents, used to arrest fetal motion for invasive intrauterine procedures, may cause temporary fetal heart rate changes. After 21 invasive procedures using either pancuronium bromide or vecuronium bromide, post-procedure fetal heart rate tracings were retrospectively compared. Pancuronium was associated with an increased fetal heart rate and decreased beat-to-beat ...
Wax J R - - 1996
Concern for fetal hypoxia often leads to cesarean delivery when persistent fetal bradycardia is identified. A fetus with premature atrial contractions had a prolonged second-stage heart rate of 80 beats/min. Intrapartum echocardiography and electronic fetal heart rate monitoring distinguished bradycardia caused by blocked atrial bigeminy from hypoxic bradycardia. The fetal ...
Seligman S P - - 1996
BACKGROUND: Fetal bradycardia is a common complication of funipuncture. We present a case of fetal exsanguination in which fetal tachycardia was the sole fetal heart rate abnormality. CASE: Funipuncture was performed at 32 weeks' gestation for evaluation of Rh isoimmunization. A persistent fetal tachycardia ensued and, although there was no ...
Devoe L D - - 1996
The use of computers for analysis of fetal heart rate has developed rapidly, enabling reproducible, objective analysis of fetal heart rate patterns. The problems of observer differences in visual assessment of fetal heart rate, and the continuum of antepartum and intrapartum fetal condition can be clarified through the use of ...
Coulson C C - - 1996
OBJECTIVE: To determine the cardiac effects of relaxin in the isolated, perfused rat heart model, and to see if pregnancy modifies the hormone's actions. METHODS: Hearts were excised from 18 female Sprague-Dawley rats (ten pregnant, eight nonpregnant) and attached to a Langendorff apparatus. Left ventricular systolic pressure, heart rate, and ...
Allan L D - - 1996
Several publications continue to address the topic of screening for fetal congenital heart disease with widely differing results. The ideal timing and method of fetal heart scanning is still under debate. An abnormal fetal heart position may indicate abnormality, particularly of the great arteries. The management of several problems that ...
Zwiener U - - 1996
To evaluate whether or not heart-rate variations (HRV) have both periodic and deterministic-chaotic properties in conscious and anaesthetized states, HRV of 9 rabbits were analysed by power spectral analysis and methods of deterministic chaos. In order to correlate these properties with the physiological structure of HRV, cholinergic and beta-adrenergic blockades ...
Reguig F B - - 1996
The design of a fetal heart rate (FHR) monitor using fetal electrocardiogram (FECG) scalp electrodes is described. It is shown that the design approach followed two stages: generation of FHR pulses at R-R intervals and FHR computation. The former uses a simple hardware approach for QRS detection and R-wave enhancement, ...
Sadaniantz A - - 1996
OBJECTIVE: This study evaluated whether the recurring volume loading and hormonal changes in multiple pregnancies might have some cumulative effect on heart size and function. STUDY DESIGN: Echocardiograms were performed on 20 healthy women with at least 4 (mean 5.2) term pregnancies; 20 healthy, age-matched, nulliparous women served as controls. ...
Bronshtein M - - 1996
Isolated left-sided echogenic foci in the fetal heart are considered as a benign condition, probably representing a normal variant of the development of papillary muscles. The objective of the present study was to evaluate the incidence and significance of multiple or diffuse echogenic foci in the fetal heart. We analysed ...
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