Search Results
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McNamara H M - - 1999
The goal of intrapartum surveillance and its further development is better patient care for both the fetus and the gravida. A normal FHR pattern is usually associated with the delivery of a normal well-oxygenated infant; however, a nonreassuring FHR is not always associated with the delivery of a compromised infant. ...
Bhatia S C - - 1999
ECT was administered in two patients during the third trimester of pregnancy. Patient A experienced uterine contractions following the second, third, and sixth treatments. Tocolytic therapy was needed only after the third treatment. Also, following the third treatment, we observed decreased fetal heart rate variability and uterine contraction-related late cardiac ...
Yanagihara T - - 1999
OBJECTIVE: To compare electronic fetal heart rate (FHR) monitoring characteristics between appropriate for gestational age (AGA) fetuses and small for gestational age (SGA) fetuses and to determine whether SGA fetuses have specific abnormalities at second-trimester electronic fetal monitoring (EFM), using nonstress test. METHODS: Among 953 children born from 1993-1996, we ...
Low J A - - 1999
Potentially significant intrapartum fetal asphyxia occurs in approximately 20 per 1000 births. Moderate and severe fetal asphyxia exposure with newborn morbidity occurs in 3 to 4 1000 births, with brain damage and subsequent disability in at least 1 per 1000 births. Although the prevalence of moderate and severe asphyxia is ...
Kean L H - - 1999
OBJECTIVE: To evaluate fetal behaviour in breech and cephalic fetuses at term, using a computerised fetal behaviour program. DESIGN: An observational study. SETTING: Pregnancy Assessment Centre, University Hospital, Nottingham. SAMPLE: Twenty-six breech and 58 cephalic fetuses between 36 and 41 weeks. METHODS: Behaviour (fetal heart rate and activity) was recorded ...
StaƄczyk J - - 1999
Fetal echocardiography, performed on a 22-year-old woman at 31 weeks' gestation, revealed a diverticulum of the left atrium. The size of the diverticulum was similar to the size of the fetal heart in a four-chamber view. No evidence of congestive heart failure or changes in size of the diverticulum were ...
Bull C - - 1999
BACKGROUND: Assessment of the effect of fetal diagnosis on the prevalence of congenital heart disease at term requires national ascertainment because referral patterns are not rigorously structured. METHODS: Between 1993 and 1995, all 17 paediatric cardiac centres in the UK submitted to a database lists of all fetuses diagnosed, and ...
Minero M - - 1999
The heart rate and behaviour of 14 adult saddle horses, eight crib-biters and six normal controls, were investigated. Initially, the relationship between crib-biting and heart rate was investigated while the horses were undisturbed. The horses were tested when restrained with a lip twitch, and assessed when they were exposed suddenly ...
Petrikovsky B - - 1999
BACKGROUND: A checkmark pattern of the fetal heart rate (FHR) had been seen in association with hypoxia in human and animal fetuses. CASE: We report a checkmark pattern in a fetus of a 26-year-old primigravida who underwent induction of labor at term. Scalp pH was 7.32. Comprehensive ultrasound examination revealed ...
Yamada H - - 1999
PROBLEM: Maternal anti-SSA(B) antibody crosses the placenta and causes fetal myocarditis, congenital heart block (CHB), hydrops fetalis, and intrauterine fetal death. The aim of this study was to evaluate corticosteroids' efficacy as a treatment for CHB. METHOD OF STUDY: One fetus with complete CHB and one fetus with incomplete CHB ...
Westgate J A - - 1999
Fetal seizures together with both abnormal breathing movements and fluctuations in fetal blood pressure and heart rate resulting in increased fetal heart rate variability have been observed in brain-damaged fetal sheep shortly after an asphyxial insult. We report a clinical example of convulsions and increased heart rate variability during terminal ...
Huddleston J F - - 1999
Some of the difficulty in assessing the clinical value of intrapartum fetal-heart-rate (FHR) monitoring stems from lack of uniformity in pattern interpretation and, therefore, in response to perceived FHR abnormalities. This article reviews the physiology and pathophysiology of FHR changes, stresses the new NICHD guidelines for unambiguously defining FHR patterns, ...
Doubilet P M - - 1999
Slow embryonic heart rates at gestational age 7 weeks or less are associated with high risk of first trimester death. Our goal was to determine the prognosis for those embryos with slow early heart rates who survive the first trimester. We prospectively recorded embryonic heart rates for all obstetrical sonograms ...
Rafla N M - - 1999
One hundred and ninety-three women with uncomplicated pregnancies and 44 with high-risk pregnancies participated in a 5-minute exercise stress test on a bicycle ergometer. All women were in the third trimester of pregnancy. Measurements of fetal heart rate were made at intervals of 2, 4, 6, 8, 10, 12, 16, ...
Stark R I - - 1999
To investigate the organization of diurnal rhythmicity during gestation, the relationship between daily cycles of maternal and fetal heart rate were measured in long-term studies of healthy chronically instrumented pregnant baboons. In each of six pregnancies, hourly mean values over a 168 h time series were obtained during a 7 ...
Ghidini A - - 1999
We report a case of fetal distress following external cephalic version at term, which resulted in delivery by emergency cesarean section of an anemic, acidemic infant. The characteristics of the fetal heart rate tracing, the clinical findings, and a positive Kleihauer-Betke test after delivery suggest that fetomaternal hemorrhage or placental ...
Penning S - - 1999
Since its introduction more than 20 years ago, continuous electronic FHR monitoring has become the standard in most modern obstetric units. Practitioners well versed in FHR pattern interpretation do not question the value of fetal monitoring. Not only does this modality detect hypoxia early in its evolution, but also it ...
Walton H G - - 1999
This study was undertaken to evaluate the accuracy, reliability, consistency and biases of the CDI-100 saturation monitor when compared with a blood gas analyzer. The advantage of continuous in-line monitoring is that the perfusionist has continuous updates as to the patient's changing physiologic state. During this study, if the sample ...
Sweha A - - 1999
Electronic fetal heart rate monitoring is commonly used to assess fetal well-being during labor. Although detection of fetal compromise is one benefit of fetal monitoring, there are also risks, including false-positive tests that may result in unnecessary surgical intervention. Since variable and inconsistent interpretation of fetal heart rate tracings may ...
Connolly H M - - 1999
OBJECTIVES: The outcome of pregnancy in congenitally corrected transposition of the great vessels was studied in 22 women. BACKGROUND: Women with congenitally corrected transposition of the great vessels often reach childbearing age. Although reports on the outcome of pregnancy in these women are available, the number of patients is small. ...
Rust O A - - 1999
Mandibular aplasia is defined as incomplete development of the mandibular process of the first brachial arch. Its prevalence is less than 1:70,000. It is usually associated with low-set ears, transposition of the viscera, congenital heart defects, and rib abnormalities, and is incompatible with life. In this case report, fetal demise ...
Alchalabi H - - 1999
The objective of this study was to explore details of the clinical relationship between meconium-stained amniotic fluid (MSAF) in labour, abnormal fetal heart pattern and meconium aspiration (MA). This was a prospective study carried out in Princess Badeea Teaching hospital during a 6-month period from March to September 1997. During ...
Van Leeuwen P - - 1999
Aim of this study was the examination of fetal heart rate variability and complexity measures during pregnancy using fetal magnetocardiography. We registered 80 fetal magnetocardiograms in 19 healthy fetuses between the 16th and 41st week of gestation. On the basis of beat to beat intervals, mean RR interval (mRR), its ...
Stein P K - - 1999
OBJECTIVE: We studied the effects of normal pregnancy on heart rate variability as a noninvasive index of maternal cardiovascular autonomic modulation. STUDY DESIGN: Twenty-four-hour Holter recordings were obtained for 8 healthy pregnant volunteers during early pregnancy (</=6 weeks after conception); at 10, 18, and 34 weeks after conception; and while ...
Dildy G A - - 1999
In the United States and most industrialized countries, intrapartum fetal surveillance is performed primarily by electronic fetal heart rate monitoring. Following implementation of this technology into clinical practice, a reduction in perinatal mortality has been accompanied by a concomitant increase in the cesarean section rate to concerning levels. Although these ...
Horrigan T J - - 1999
OBJECTIVE: To determine if the scientific literature supports the practice of electronic monitoring of the fetal heart rate (FHR) during nonobstetric surgery. STUDY DESIGN: A search of the literature from 1966 to 1995 was performed using MEDLINE. RESULTS: No fetal hypoxic mortality or morbidity has been documented from nonobstetric surgery ...
Ohta T - - 1999
OBJECTIVE: Spectral analysis was conducted on fetal heart rate fluctuations for the purpose of investigating the change in gestational age and examining the usefulness as a method of estimating fetal blood gas. STUDY DESIGN: Five hundred and twenty-nine pregnant women with a single normal fetus and 26 women with intrauterine ...
Palmer C M - - 1999
We performed a retrospective review to compare the incidence of new fetal heart rate abnormalities after institution of either intrathecal fentanyl or conventional epidural labor analgesia. In chronological order, the first 100 parturients in active labor who had received epidural analgesia and had recorded fetal heart rate (FHR) traces for ...
Berkus M D - - 1999
BACKGROUND: To determine which combinations of fetal heart rate pattern abnormalities are associated with normal outcome in term pregnancies. METHODS: A cohort of 2200 consecutive deliveries was examined and the fetal heart rate tracings analyzed. Singleton, term patients without chorioamnionitis or serious malformations were used to perform logistic regression analysis ...
Kang A H - - 1999
Sinusoidal fetal heart rate may have a spectrum of occurrence that indicates degree of fetal morbidity. Twelve cases of intermittent sinusoidal fetal heart rate were reviewed for fetal outcome. Findings of anemia, low umbilical cord pH, and large base excess support that intermittent sinusoidal fetal heart rate may be an ...
Schade R P - - 1999
BACKGROUND: Fetal tachyarrhythmia is a well-documented entity which, in the absence of pharmacological intervention, may lead to congestive heart failure, fetal hydrops and eventually fetal demise. The success rate of the implemented treatment is generally measured by survival and achievement of control of the arrhythmia. We report on the occurrence ...
Ozden S - - 1999
OBJECTIVE: To determine the clinical significance of the existence of poor prognostic features in fetal heart rate (FHR) traces with variable decelerations. STUDY DESIGN: This study was prospectively performed on 167 randomly selected women with a singleton pregnancy at term. Ninety-one patients had an FHR trace without pathological features. The ...
Niermeyer S - - 1999
The human fetus develops normally under low-oxygen conditions. Exposure of a pregnant woman to the hypoxia of high altitude results in acclimatization responses which act to preserve the fetal oxygen supply. The fetus also utilizes several compensatory mechanisms to survive brief periods of hypoxia. While fetal heart rate monitoring data ...
Dawes N W - - 1999
OBJECTIVES: Our purpose was to analyze the previously unreported effect of fetal sex on the fetal heart rate in labor and to measure its magnitude in relation to the effects of other independent clinical variables. STUDY DESIGN: The last hour of the intrapartum heart rates of 1884 term singleton fetuses ...
Sandman C A - - 1999
During human pregnancy, maternal and fetal compartments of the human placenta produce and release corticotrophic-releasing hormone (CRH). Elevations of placental CRH are associated with decreased gestational length (including preterm delivery). The effects of elevated placental CRH on human fetal neurological development are not known. Pregnant women in the 31st and ...
Schmaltz A A - - 1999
Improvements in diagnosis and surgical technique for correction have led to an increasing number of women with congenital heart disease reaching the child-bearing age. Pregnancy places considerable strain on the heart and circulation and necessitates marked cardiorespiratory adaptation. Today, with the exception of the Eisenmenger syndrome, there is no increased ...
Stark R I - - 1999
To provide insight into the maturation of neural mechanisms governing fetal heart rate and rate variability, seven chronically instrumented fetal baboons were monitored under steady state conditions between 120 and 165 days gestation (term 175 d). Forty records of 24 h duration (5-7 records/fetus) were evaluated. For each fetus, heart ...
Eneroth E E Department of Obstetrics and Gynaecology, Södersjukhuset, Stockholm, - - 1999
The aim of the present study was to evaluate the autonomic balance in women with preeclampsia and in healthy women during and after pregnancy by means of a 24-h ECG Holter recording combined with power spectral analysis. Fifteen preeclamptic and 15 healthy women underwent 24-h Holter monitoring in the 32nd-36th ...
Anninos PA - - 1998
> Objective: To investigate the hemodynamics of uteroplacental circulation in normal and preeclamptic pregnancies using the biomagnetometer SQUID. Methods: Fifteen pregnancies complicated with preeclampsia and 37 normal pregnancies were included in this study. All women were near term. The biomagnetic signals (waveforms) were recorded with the SQUID from the uterine ...
Brezinka C - - 1998
> Objective: For more than 20 years, vibroacoustic stimulation testing (VAST) using an artificial larynx has been used worldwide when fetal heart rate monitoring produced patterns with absent or very low variability. In addition to the artificial larynx many other appliances have been used to stimulate a seemingly dormant fetus, ...
Kimura Y - - 1998
We examined whether the nonlinear control mechanism of the fetal autonomic nervous system would change in various fetal states. Eight thousand or more fetal heartbeats were detected from normal, hypoxemic, and acidemic fetuses. Fetal heart Doppler-signal intervals were determined in a high-precision autocorrelation method, and a time series of fetal ...
Oguch O - - 1998
There is a widespread but erroneous view among the lay public that there is a difference in the baseline fetal heart rate between male and female fetuses. It has been suggested that this perception might reflect an actual difference in fetal heart rate variability. Therefore, we studied the fetal heart ...
Morrison E H - - 1998
Peripartum emergencies occur in patients with no known risk factors. When the well-being of the fetus is in question, the fetal heart rate pattern may offer etiologic clues. Repetitive late decelerations may signify uteroplacental insufficiency, and a sinusoidal pattern may indicate severe fetal distress. Repetitive variable decelerations suggesting umbilical cord ...
Borgida A F - - 1998
OBJECTIVE: Our purpose was to characterize the findings associated with dextroposition of the fetal heart. STUDY DESIGN: A fetal echocardiography database was retrospectively searched from January 1990 through December 1996 to identify all cases referred or diagnosed with dextroposition of the fetal heart. Dextroposition was defined as most of the ...
Cardosi R J - - 1998
BACKGROUND: Fetal bradycardia and decreased heart rate variability can indicate a nonreassuring fetal status. However, there can be iatrogenic, physiologic, or pathologic causes. CASE: A patient in premature labor received toxic levels of magnesium sulfate for tocolysis. Elevated maternal serum magnesium levels correlated inversely with maternal temperature and both fetal ...
Rosenthal D - - 1998
BACKGROUND: Therapy of established congenital complete heart block in the fetus has resulted in improved survival but persistence of heart block. This exposes the infant to the morbidity of heart block, including the risk of sudden death and pacemaker implantation. CASE: A 35-year-old gravida 2, para 1, with Sjogren syndrome ...
Nei M - - 1998
We describe a 33-year-old woman who had a complex partial seizure during labor. Intrauterine pressure catheter and fetal heart monitoring during the seizure revealed a strong, prolonged uterine contraction and simultaneous significant fetal heart rate deceleration for 3.5 minutes. This patient demonstrates that complex partial seizures may result in uterine ...
Begg L - - 1998
Conventional intrapartum electronic fetal heart rate monitoring is not informative in certain fetal conditions because the electronically-monitored fetal heart rate pattern is uninterpretable in terms of reflecting fetal normoxia. Such fetal conditions include various cardiac dysrrhythmias and some central nervous system abnormalities. Difficulties with intrapartum fetal welfare surveillance in such ...
Guinn D A - - 1998
The objective of this article is to define normative fetal heart rate (FHR) tracing characteristics between 25-28 weeks' gestation in a low-risk population with normal pregnancy outcomes and to determine which criteria best determine FHR reactivity. Continuous FHR tracings were reviewed from 188 low-risk women participating in a trial of ...
Sherer D M - - 1998
A recent, prospective randomized trial has suggested that long-term use of prophylactic beta-adrenergic blocking agents may slow the rate of aortic dilation in those patients with Marfan's syndrome exhibiting evidence of existing dilation. Accordingly, administration of such medication from the midtrimester onward has been advocated in these patients. Acute oral ...
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