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Fetal heart rate monitoring

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https://www.readbyqxmd.com/read/29141373/-a-concentration-response-observation-of-hydromorphone-combined-with-ropivacaine-in-labor-analgesia
#1
Y Y Lu, H Huang, W L Mao, R H Liu, M J Hu, L X Shao, M P Hu, J Li
Objective: To investigate the median effective dose (ED(50)) of hydromorphone and the appropriate concentration of ropivacaine combined with hydromorphone in epidural labor analgesia. Methods: One hundred and forty nulliparous women undergoing labor selected for delivery with epidural analgesia were enrolled in our hospital from January to June 2016. The first of top 50 women received 0.12% ropivacaine plus 20 μg/ml hydromorphone complex solution, then sequential women were used the modified sequential method to determine the ED(50) and ED(95) of hydromorphone...
November 14, 2017: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29132252/association-between-fetal-myocardial-performance-index-and-fetal-heart-rate-monitoring-a-prospective-observational-cohort-study
#2
Alexis C Gimovsky, Brianne Whitney, Dennis Wood, Stuart Weiner
OBJECTIVE: To evaluate whether the left myocardial performance index (MPI) changes in association with the fetal heart rate (FHR) tracing during labor. STUDY DESIGN: Women with term, singleton pregnancies, in labor were recruited to this prospective cohort study. PRIMARY OUTCOME: difference in left MPI between Category of fetal heart rate tracings. SECONDARY OUTCOMES: differences in left MPI by FHR characteristics. Participants underwent ultrasound examination, during which fetal MPI was measured...
November 13, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29096560/a-novel-modality-for-intrapartum-fetal-heart-rate-monitoring
#3
Eran Ashwal, Shiri Shinar, Amir Aviram, Sharon Orbach, Yariv Yogev, Liran Hiersch
BACKGROUND: Intrapartum fetal heart rate (FHR) monitoring is well recommended during labor to assess fetal wellbeing. Though commonly used, the external Doppler and fetal scalp electrode monitor have significant shortcomings. Lately, non-invasive technologies were developed as possible alternatives. OBJECTIVE: The objective of this study is to compare the accuracy of FHR trace using novel Electronic Uterine Monitoring (EUM) to that of external Doppler and fetal scalp electrode monitor...
November 2, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29092858/chronic-maternal-hypercortisolemia-in-late-gestation-alters-fetal-cardiac-function-at-birth
#4
Andrew Antolic, Charles E Wood, Maureen Keller-Wood
Studies in our laboratory have shown that modest chronic increases in maternal cortisol concentrations over the last 0.20 of gestation impair maternal glucose metabolism and increase the incidence of perinatal stillbirth. Previous studies had found an increase in maternal cortisol concentrations from 115 to 130d gestation in sheep increased both proliferation in fetal cardiomyocytes and apoptosis in the fetal cardiac Purkinje Fibers. We hypothesized that the adverse effects of excess cortisol may result in defects in cardiac conduction during labor and delivery...
November 1, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/29089896/a-comparative-study-on-fetal-heart-rates-estimated-from-fetal-phonography-and-cardiotocography
#5
Emad A Ibrahim, Shamsa Al Awar, Zuhur H Balayah, Leontios J Hadjileontiadis, Ahsan H Khandoker
The aim of this study is to investigate that fetal heart rates (fHR) extracted from fetal phonocardiography (fPCG) could convey similar information of fHR from cardiotocography (CTG). Four-channel fPCG sensors made of low cost (<$1) ceramic piezo vibration sensor within 3D-printed casings were used to collect abdominal phonogram signals from 20 pregnant mothers (>34 weeks of gestation). A novel multi-lag covariance matrix-based eigenvalue decomposition technique was used to separate maternal breathing, fetal heart sounds (fHS) and maternal heart sounds (mHS) from abdominal phonogram signals...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28964296/piezoelectric-vibrator-stimulated-potential-and-heart-rate-accelerations-detected-from-the-fetus
#6
Rina Matsuoka, Sinyoung Lee, Miho Sato, Remi Hibiya, Yota Shimanuki, Misato Kasai, Kazusaku Kamiya, Atsuo Itakura, Takuji Koike, Katsuhisa Ikeda
OBJECTIVES: The fetus is well known to have a substantial capacity for sound recognition in the uterine environment. The aim of this study was to develop a sound stimulus system equipped with a piezoelectric vibrator (PV), record the PV-stimulated potential (PVSP) of the fetus and monitor changes of the fetal heart rate (FHR) under PV stimulation. METHODS: The relationship between the input voltage applied to a piezoelectric vibrator and the sound pressure generated in the uterus was calibrated based on a model of the maternal abdomen...
October 2017: International Journal of Pediatric Otorhinolaryngology
https://www.readbyqxmd.com/read/28963562/association-between-exposure-to-air-pollution-during-pregnancy-and-false-positives-in-fetal-heart-rate-monitoring
#7
Seiichi Morokuma, Takehiro Michikawa, Shin Yamazaki, Hiroshi Nitta, Kiyoko Kato
Fetal heart rate (FHR) monitoring is essential for fetal management during pregnancy and delivery but results in many false-positive diagnoses. Air pollution affects the uterine environment; thus, air pollution may change FHR reactivity. This study assessed the association between exposure to air pollution during pregnancy and FHR monitoring abnormalities using 2005-2010 data from the Japan Perinatal Registry Network database. Participants were 23,782 singleton pregnant women with FHR monitoring, without acidemia or fetal asphyxia...
September 29, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28962216/assessing-the-impact-of-total-extracorporeal-circulation-on-hemodynamics-in-an-ovine-fetal-model
#8
Fei Xiao, Jian Zhuang, Cheng-Bin Zhou, Ji-Mei Chen, Jian-Zheng Cen, Gang Xu, Shu-Sheng Wen
The present study aimed to evaluate the impact of total extracorporeal circulation on hemodynamics and placental function in an ovine fetal model. Mid-term ovine fetuses (n=6) underwent extracorporeal circulation (30 min), cardioplegic arrest (20 min) and monitoring (120 min). The ascending aorta and umbilical cords of the fetuses were occluded during the bypass and an extracorporeal membrane oxygenator was used as the oxygen source. Biventricular intracardiac pressures, echocardiographic data, blood gas levels and placental function variables were recorded, and statistical analysis was performed using the repeated-measure analysis of variance test...
September 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28953855/from-apparent-death-to-birth-asphyxia-a-history-of-blame
#9
REVIEW
Michael Obladen
Since the 16th century, competition between midwives and surgeons has created a culture of blame around the difficult delivery. In the late 17th century, 100 years before oxygen was discovered, researchers associated "apparent death of the newborn" with impaired respiratory function of the placenta. The diagnosis "birth asphyxia" replaced the term "apparent death of the newborn" during the mass phobia of being buried alive in the 18th century. This shifted the interpretation from unavoidable fate to a preventable condition...
September 27, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28945767/chorioamnionitis-following-preterm-premature-rupture-of-membranes-and-fetal-heart-rate-variability
#10
Laurent Vandenbroucke, Matthieu Doyen, Maëla Le Lous, Alain Beuchée, Philippe Loget, Guy Carrault, Patrick Pladys
INTRODUCTION: The objective of this study was to identify prenatal markers of histological chorioamnionitis (HC) during pPROM using fetal computerized cardiotocography (cCTG). MATERIALS AND METHODS: Retrospective review of medical records from pregnant women referred for pPROM between 26 and 34 weeks, in whom placental histology was available, in a tertiary level obstetric service over a 5-year period. Fetal heart rate variability was assessed using cCTG. Patients were included if they were monitored at least six times in the 72 hours preceding delivery...
2017: PloS One
https://www.readbyqxmd.com/read/28913590/challenges-of-anticoagulation-therapy-in-pregnancy
#11
REVIEW
Annemarie E Fogerty
Thrombotic complications in pregnancy represent a major cause of morbidity and mortality. Pregnancy is a primary hypercoagulable state due to enhanced production of clotting factors, a decrease in protein S activity, and inhibition of fibrinolysis. These physiologic changes will yield a collective rate of venous thromboembolism (VTE) of about 1-2 in 1000 pregnancies for the general obstetric population, which represents a five- to tenfold increased risk in pregnancy compared to age-matched non-pregnant peers...
September 14, 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28912727/a-hybrid-emd-kurtosis-method-for-estimating-fetal-heart-rate-from-continuous-doppler-signals
#12
Haitham M Al-Angari, Yoshitaka Kimura, Leontios J Hadjileontiadis, Ahsan H Khandoker
Monitoring of fetal heart rate (FHR) is an important measure of fetal wellbeing during the months of pregnancy. Previous works on estimating FHR variability from Doppler ultrasound (DUS) signal mainly through autocorrelation analysis showed low accuracy when compared with heart rate variability (HRV) computed from fetal electrocardiography (fECG). In this work, we proposed a method based on empirical mode decomposition (EMD) and the kurtosis statistics to estimate FHR and its variability from DUS. Comparison between estimated beat-to-beat intervals using the proposed method and the autocorrelation function (AF) with respect to RR intervals computed from fECG as the ground truth was done on DUS signals from 44 pregnant mothers in the early (20 cases) and late (24 cases) gestational weeks...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28902389/women-s-experiences-of-continuous-fetal-monitoring-a-mixed-methods-systematic-review
#13
Alexandra Crawford, Dexter Hayes, Edward D Johnstone, Alexander E P Heazell
INTRODUCTION: Antepartum stillbirth is often preceded by detectable signs of fetal compromise, including changes in fetal heart rate and movement. It is hypothesised that continuous fetal monitoring could detect these signs more accurately and objectively than current forms of fetal monitoring and allow for timely intervention. This systematic review aimed to explore available evidence on women's experiences of continuous fetal monitoring to investigate its acceptability prior to clinical implementation and to inform clinical studies...
September 13, 2017: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/28901007/pharmacological-and-mechanical-interventions-for-labour-induction-in-outpatient-settings
#14
REVIEW
Joshua P Vogel, Alfred O Osoti, Anthony J Kelly, Stefania Livio, Jane E Norman, Zarko Alfirevic
BACKGROUND: Induction of labour is carried out for a variety of indications and using a range of methods. For women at low risk of pregnancy complications, some methods of induction of labour or cervical ripening may be suitable for use in outpatient settings. OBJECTIVES: To examine pharmacological and mechanical interventions to induce labour or ripen the cervix in outpatient settings in terms of effectiveness, maternal satisfaction, healthcare costs and, where information is available, safety...
September 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28899619/first-do-the-experiment-do-computerised-interpretation-of-cardiotocography-and-other-widely-used-interventions-improve-newborn-outcomes
#15
REVIEW
Philip Steer
The introduction of continuous electronic fetal heart rate monitoring (EFM) in labour has coincided with a steady and remarkable fall in perinatal mortality. Whether this is cause or coincidence remains unclear because randomised trials have been underpowered. Attempts to improve the sensitivity and specificity of fetal compromise detection using fetal blood sampling and pH measurement, pulse oximetry, and fetal electrocardiogram analysis have failed to provide evidence of additional value in randomised trials...
November 2017: Early Human Development
https://www.readbyqxmd.com/read/28859764/no-347-obstetric-management-at-borderline-viability
#16
Noor Niyar N Ladhani, Radha S Chari, Michael S Dunn, Griffith Jones, Prakesh Shah, Jon F R Barrett
OBJECTIVE: The primary objective of this guideline was to develop consensus statements to guide clinical practice and recommendations for obstetric management of a pregnancy at borderline viability, currently defined as prior to 25+6 weeks. INTENDED USERS: Clinicians involved in the obstetric management of women whose fetus is at the borderline of viability. TARGET POPULATION: Women presenting for possible birth at borderline viability. EVIDENCE: This document presents a summary of the literature and a general consensus on the management of pregnancies at borderline viability, including maternal transfer and consultation, administration of antenatal corticosteroids and magnesium sulfate, fetal heart rate monitoring, and considerations in mode of delivery...
September 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
https://www.readbyqxmd.com/read/28833043/simultaneous-monitoring-of-maternal-and-fetal-heart-rate-variability-during-labor-in-relation-with-fetal-gender
#17
Hernâni Gonçalves, Diana Fernandes, Paula Pinto, Diogo Ayres-de-Campos, João Bernardes
Male gender is considered a risk factor for several adverse perinatal outcomes. Fetal gender effect on fetal heart rate (FHR) has been subject of several studies with contradictory results. The importance of maternal heart rate (MHR) monitoring during labor has also been investigated, but less is known about the effect of fetal gender on MHR. The aim of this study is to simultaneously assess maternal and FHR variability during labor in relation with fetal gender. Simultaneous MHR and FHR recordings were obtained from 44 singleton term pregnancies during the last 2 hr of labor (H1, H2 )...
November 2017: Developmental Psychobiology
https://www.readbyqxmd.com/read/28794892/the-use-of-non-invasive-fetal-electrocardiography-in-diagnosing-second-degree-fetal-atrioventricular-block
#18
Igor Lakhno, Joachim A Behar, Julien Oster, Vyacheslav Shulgin, Oleksii Ostras, Fernando Andreotti
BACKGROUND: Complete atrioventricular block in fetuses is known to be mostly associated with autoimmune disease and can be irreversible if no steroids treatment is provided. Conventional methods used in clinical practice for diagnosing fetal arrhythmia are limited since they do not reflect the primary electrophysiological conduction processes that take place in the myocardium. The non-invasive fetal electrocardiogram has the potential to better support fetal arrhythmias diagnosis through the continuous analysis of the beat to beat variation of the fetal heart rate and morphological analysis of the PQRST complex...
2017: Maternal Health, Neonatology and Perinatology
https://www.readbyqxmd.com/read/28780660/update-on-valvular-heart-disease-in-pregnancy
#19
REVIEW
Lucy M Safi, Sarah V Tsiaras
Valvular heart disease in women of childbearing age poses an increased risk of adverse maternal and fetal outcomes, and management in pregnancy can be challenging. Ideally, patients with suspected valvular disease should have preconception counseling by a multidisciplinary team including cardiologists with expertise in pregnancy and a maternal-fetal medicine specialist. Preconception planning should include a cardiac assessment of maternal risk, determination of frequency of surveillance, and a cardiovascular management plan during delivery...
September 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28753499/non-invasive-cardiac-output-monitoring-nicom-%C3%A2-can-predict-the-evolution-of-uteroplacental-disease-results-of-the-prospective-handle-study
#20
Cathy Monteith, Lisa McSweeney, Colm R Breatnach, Anne Doherty, Lucy Shirren, Elizabeth C Tully, Patrick Dicker, Fergal D Malone, Afif El-Khuffash, Etaoin Kent
OBJECTIVES: We aimed to firstly identify the different haemodynamic profiles amongst nulliparous women who develop either gestational hypertension (GH), pre-eclampsia (PE), normotensive fetal growth restriction (FGR) versus unaffected pregnancies using non-invasive cardiac output monitoring (NICOM(®)). Our second primary objective was to assess the ability of NICOM(®) derived variables to predict the evolution of PE, GH and FGR. STUDY DESIGN: Low risk nulliparous women were enrolled in a single center prospective observational study...
July 20, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
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