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Placental cerebral index

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https://www.readbyqxmd.com/read/28892981/effect-of-transdermal-nitroglycerine-on-doppler-velocity-waveforms-of-the-uterine-umbilical-and-fetal-middle-cerebral-arteries-in-patients-with-chronic-placental-insufficiency-a-prospective-rct
#1
Suruchi Gupta, Meenakshi Chauhan, Jyotsna Sen, Smiti Nanda
INTRODUCTION: Increase in Nitric Oxide (NO) may be important in vascular adaptation needed to accommodate increased uteroplacental blood flow as pregnancy advances. Hence, in certain conditions like Pregnancy Induced Hypertension (PIH) and Fetal Growth Restriction (FGR), NO donors may play an effective role in increasing uteroplacental perfusion. Transdermal route appears to be a safe and effective route. AIM: To evaluate the effect of nitroglycerine patch on Doppler velocity waveforms of the uterine, umbilical and fetal middle cerebral arteries in patients with chronic placental insufficiency...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28790780/doppler-indices-of-the-umbilical-and-fetal-middle-cerebral-artery-at-18-40-weeks-of-normal-gestation-a-pilot-study
#2
Satyabrat Srikumar, Jyotindu Debnath, R Ravikumar, H C Bandhu, V K Maurya
BACKGROUND: Doppler indices form an integral component of noninvasive evaluation of fetal well-being. There is paucity of information about normal obstetric Doppler indices, particularly from the Indian subcontinent. The aim of the study was to find the values of pulsatility index (PI), resistive index (RI) of umbilical artery (UA), and fetal middle cerebral artery (MCA) and calculate cerebro-placental ratio (CP ratio) for 18-40 weeks of normal gestation so that a reference range of these Doppler values can be postulated...
July 2017: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28743210/fetal-middle-cerebral-artery-doppler-in-late-term-pregnancy-a-predicting-factor-for-failed-induction-of-labor
#3
Silvia Vannuccini, Michela Torricelli, Caterina Bocchi, Filiberto M Severi, Mariarosaria Di Tommaso, Felice Petraglia
PURPOSE: To study the role of fetal middle cerebral artery (MCA) Doppler evaluated prior to induction of labor in late-term pregnancies, in order to build an ultrasound-based predictive model for failed induction. MATERIALS AND METHODS: A prospective cohort study on 250 nulliparous women carrying singleton late-term pregnancies was conducted. Prior to induction, each patient underwent to an ultrasound evaluation for fetal MCA Doppler. Additional ultrasound parameters such as cervical length (CL), membranes thickness, amniotic fluid index, placental location, and estimated fetal weight (EFW) were collected...
July 25, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28707059/a-prospective-cohort-study-on-the-prediction-of-fetal-distress-and-neonatal-status-with-arterial-and-venous-doppler-measurements-in-appropriately-grown-term-fetuses
#4
Ihsan Atabay, Semir Kose, Erkan Cagliyan, Bora Baysal, Ebru Yucesoy, Sabahattin Altunyurt
PURPOSE: To assess the predictive power of the cerebro-placental ratio (CPR) and the venous-arterial index (VAI) for the development of intrapartum fetal distress (FD) and neonatal intensive care unit (NICU) admission. METHODS: Fetal umbilical artery, middle cerebral artery and umbilical vein Doppler measurements were obtained before the active phase of labor in 311 singleton pregnancies at ≥37 weeks. A continuous electronic fetal monitorization was applied, and an umbilical cord blood sample was obtained for each participant...
July 13, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28695721/aortic-isthmus-shunt-dynamics-in-normal-and-complicated-monochorionic-pregnancies
#5
Viola Seravalli, Dana Block-Abraham, Cyrethia McShane, Sarah Millard, Ahmet Baschat, Jena Miller
OBJECTIVE: To study fetal aortic isthmus (AoI) shunt dynamics in monochorionic (MC) twins. METHODS: Normal and complicated MC pregnancies were prospectively enrolled. The relationship of isthmus flow index (IFI) with Doppler parameters of umbilical artery (UA), descending aorta, middle cerebral artery, and ductus venosus and with left and right ventricular cardiac output and stroke volume was studied. RESULTS: The IFI was obtained in 180 examinations from 48 pregnancies (24 twin-twin transfusion syndrome, TTTS; 4 selective intrauterine growth restriction, sIUGR; 12 TTTS + sIUGR; and 8 uncomplicated)...
July 11, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28669943/-a-prenatal-ultrasound-study-of-cerebral-sulci-and-gyrus-development-in-fetuses-with-tetralogy-of-fallot
#6
Jia-Min He, Sheng-Li Li, Xi Chen, Hua-Xuan Wen, Ying Yuan, Dan-Dan Luo
OBJECTIVE: To evaluate the development of the cerebral sulci and gyrus and cerebral blood flow in fetuses with tetralogy of Fallot (ToF) in the second and third trimesters using ultrasound imaging. METHODS: Forty fetuses (23-33(+6) weeks) with ToF diagnosed using ultrasound imaging between December, 2015 and September, 2016 were analyzed in this study. The development of the cerebral sulci and gyrus was evaluated by measuring the parietal-occipital fissure (POF) depth, POF angle, sylvian fissure (SF) depth, SF width, uncovered insular width, calcarine fissure (CF) depth, hemisphere depth on the views of POF, SF and CF, uncovered insular ratio, biparietal diameter (BPD), and head circumference (HC)...
June 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28635180/renal-vascularization-indexes-and-fetal-hemodynamics-in-fetuses-with-growth-restriction
#7
Giovana Farina Doro, Janaína Campos Senra, Agatha Sacramento Rodrigues, Seizo Miyadahira, Renata Lopes Ribeiro, Rossana Pulcinelli Vieira Francisco, Lisandra Stein Bernardes
OBJECTIVE: To identify the correlation between the renal vascularization index (VI), the flow index (FI) and the vascularization and flow index (VFI) and placental and fetal hemodynamics in fetuses with growth restriction. METHOD: Bidimensional ultrasound and three-dimensional power Doppler with the VOCAL technique were used to determine the renal vascular indexes and fetal and placental hemodynamics in fetuses below the 10th percentile for fetal weight. Partial correlation analysis (controlled for renal depth and gestational age) was performed...
June 20, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28298706/an-assessment-of-fetal-cerebral-and-hepatic-perfusion-in-normal-pregnancy-and-pre-eclampsia-using-three-dimensional-ultrasound
#8
Susan Addley, Amanda Ali, Stephen Ong
BACKGROUND: Pre-eclampsia and placental causes of intrauterine growth restriction (IUGR) are part of the same spectrum of disorders. In IUGR, there is preferential shunting of blood to the fetal brain at the expense of other organs. We wanted to demonstrate that this also occurs in pre-eclampsia using three dimensional (3D) ultrasound. The 3D indices of perfusion are: flow index (FI), vascular index (VI) and vascularisation flow index (VFI) which reflect tissue vascularity and flow intensity...
January 2017: Ulster Medical Journal
https://www.readbyqxmd.com/read/28103875/effects-of-plasmodium-falciparum-infection-on-umbilical-artery-resistance-and-intrafetal-blood-flow-distribution-a-doppler-ultrasound-study-from-papua-new-guinea
#9
Maria Ome-Kaius, Stephan Karl, Regina Alice Wangnapi, John Walpe Bolnga, Glen Mola, Jane Walker, Ivo Mueller, Holger Werner Unger, Stephen John Rogerson
BACKGROUND: Doppler velocimetry studies of umbilical artery (UA) and middle cerebral artery (MCA) flow help to determine the presence and severity of fetal growth restriction. Increased UA resistance and reduced MCA pulsatility may indicate increased placental resistance and intrafetal blood flow redistribution. Malaria causes low birth weight and fetal growth restriction, but few studies have assessed its effects on uteroplacental and fetoplacental blood flow. METHODS: Colour-pulsed Doppler ultrasound was used to assess UA and MCA flow in 396 Papua New Guinean singleton fetuses...
January 19, 2017: Malaria Journal
https://www.readbyqxmd.com/read/28087423/is-middle-cerebral-artery-doppler-related-to-neonatal-and-2-year-infant-outcome-in-early-fetal-growth-restriction
#10
Tamara Stampalija, Birgit Arabin, Hans Wolf, Caterina M Bilardo, Christoph Lees
BACKGROUND: Reduced fetal middle cerebral artery Doppler impedance is associated with hypoxemia in fetal growth restriction. It remains unclear as to whether this finding could be useful in timing delivery, especially in the third trimester. In this regard there is a paucity of evidence from prospective studies. OBJECTIVES: The aim of this study was to determine whether there is an association between middle cerebral artery Doppler impedance and its ratio with the umbilical artery in relation to neonatal and 2 year infant outcome in early fetal growth restriction (26(+0)-31(+6) weeks of gestation)...
May 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/27873370/magnitude-of-change-in-fetal-cerebroplacental-ratio-in-third-trimester-and-risk-of-adverse-pregnancy-outcome
#11
C Flatley, R M Greer, S Kumar
OBJECTIVES: To evaluate whether the magnitude of change in the cerebroplacental ratio (CPR) after 30 weeks' gestation is a better predictor of adverse pregnancy outcome compared with a single CPR measurement at 35-37 weeks. A secondary aim was to evaluate whether the utility of CPR at 35-37 weeks was enhanced after adjusting for change in gestational age. METHODS: This was a retrospective cohort study of women who had at least two ultrasound scans between 30 and 37 weeks' gestation, with the final scan at 35-37 weeks...
October 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27515046/placental-insufficiency-among-high-risk-pregnancies-with-a-normal-umbilical-artery-resistance-index-after-32weeks
#12
Lut Geerts, Elrike Van der Merwe, Anneke Theron, Kerry Rademan
OBJECTIVE: To determine the incidence of abnormal multi-vessel Doppler values among advanced pregnancies at risk of suboptimal placentation but with a normal umbilical artery resistance index (RI), and to assess whether clinical and ultrasonography findings can identify them. METHODS: In a prospective cross-sectional study at Tygerberg Hospital, South Africa, women with high-risk pregnancies but normal umbilical artery RI after 32weeks underwent ultrasonography (fetal biometry, liquor, and placenta maturation) and Doppler assessment (uterine, umbilical, and middle cerebral arteries) between February 11 and October 21, 2013...
October 2016: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/27504944/assessment-of-ultrasound-and-doppler-parameters-in-the-third-trimester-of-pregnancy-as-predictors-of-adverse-perinatal-outcome-in-unselected-pregnancies
#13
Alberto Borges Peixoto, Taciana Mara Rodrigues da Cunha Caldas, Tácito Augusto Godoy Silva, Mário Sérgio Silva Gomes Caetano, Wellington P Martins, Eduardo Felix Martins Santana, Edward Araujo Júnior
OBJECTIVES: The aim of the study was to investigate ultrasound and Doppler parameters in the third trimester of pregnancy as possible predictors of adverse perinatal outcome in unselected pregnancies. MATERIAL AND METHODS: We performed a retrospective cross-sectional study including unselected pregnant women be-tween 27 and 36 + 6 weeks of gestation. The following ultrasound and Doppler parameters were assessed: estimated fetal weight (EFW) [g], EFW percentile, placental maturity grade (Grannum classification), single vertical deepest pocket (SVDP) of amniotic fluid [cm], amniotic fluid index (AFI) [cm], mean uterine artery (UtA) pulsatility index (PI), umbilical artery (UA) PI, middle cerebral artery (MCA) PI, MCA peak systolic velocity (PSV) [cm/s], and cerebroplacental ratio (CPR)...
2016: Ginekologia Polska
https://www.readbyqxmd.com/read/26962562/the-usefulness-of-fetal-doppler-evaluation-in-early-versus-late-onset-intrauterine-growth-restriction-review-of-the-literature
#14
REVIEW
Daniel Mureșan, Ioana Cristina Rotar, Florin Stamatian
Intrauterine growth restriction (IUGR) represents a serious condition that can lead to increased perinatal morbidity, mortality and postnatal impaired neurodevelopment. There are two distinct phenotypes of IUGR: early onset and late onset IUGR with different onset, patterns of evolution and fetal Doppler profile. In early onset preeclampsia the main Doppler modifications are at the level of umbilical artery, with progressive augmentation of the pulsatility index to absent or reverse end diastolic flow. The modifications of the cerebral, cardiac and ductus venosus circulation are generally present, but with different sequences...
March 2016: Medical Ultrasonography
https://www.readbyqxmd.com/read/26827880/sequential-plasma-angiogenic-factors-levels-in-women-with-suspected-preeclampsia
#15
Kedak Baltajian, Surichhya Bajracharya, Saira Salahuddin, Anders H Berg, Carl Geahchan, Julia B Wenger, Ravi Thadhani, S Ananth Karumanchi, Sarosh Rana
BACKGROUND: Alterations in circulating angiogenic factors are associated with the diagnosis of preeclampsia and correlate with adverse perinatal outcomes during the third trimester. OBJECTIVE: Analysis of the sequential levels of plasma angiogenic factors among patients admitted for evaluation of preeclampsia. STUDY DESIGN: We performed an observational study among women with singleton pregnancies admitted to Beth Israel Deaconess Medical Center, Boston, Massachusetts, for evaluation of preeclampsia at less than 37 weeks of gestation...
July 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/26759989/early-functional-and-morphological-brain-disturbances-in-late-onset-intrauterine-growth-restriction
#16
Mirta Starčević, Maja Predojević, Dražan Butorac, Jasna Tumbri, Paško Konjevoda, Aida Salihagić Kadić
AIMS: To determine whether the brain disturbances develop in late-onset intrauterine growth restriction (IUGR) before blood flow redistribution towards the fetal brain (detected by Doppler measurements in the middle cerebral artery and umbilical artery). Further, to evaluate predictive values of Doppler arterial indices and umbilical cord blood gases and pH for early functional and/or morphological brain disturbances in late-onset IUGR. STUDY DESIGN: This cohort study included 60 singleton term pregnancies with placental insufficiency caused late-onset IUGR (IUGR occurring after 34 gestational weeks)...
February 2016: Early Human Development
https://www.readbyqxmd.com/read/26692775/effects-of-altitude-changes-on-doppler-flow-parameters-for-uterine-umbilical-and-mid-cerebral-arteries-in-term-pregnancy-a-pilot-study
#17
Ayşe Nur Aksoy, Gonca Batmaz, Banu Dane, Suna Kabil Kucur, İlay Gözükara
OBJECTIVE: We hypothesized that maternal and fetal circulations may be affected by moderately high altitudes. Therefore, we compared the differences in maternal and fetal Doppler flow parameters in women with term pregnancy living at a moderately high altitude (1890 m in Erzurum) with those of women living at the sea level (31 m in İstanbul). MATERIAL AND METHODS: Eighty women (n=40, for each group) with full-term and singleton pregnancies underwent Doppler waveform analysis, and the pulsatility and resistance index values for the uterine, umbilical, and mid-cerebral arteries were recorded...
2015: Journal of the Turkish German Gynecological Association
https://www.readbyqxmd.com/read/26475425/the-hemodynamics-of-late-onset-intrauterine-growth-restriction-by-mri
#18
COMPARATIVE STUDY
Meng Yuan Zhu, Natasha Milligan, Sarah Keating, Rory Windrim, Johannes Keunen, Varsha Thakur, Annika Ohman, Sharon Portnoy, John G Sled, Edmond Kelly, Shi-Joon Yoo, Lars Gross-Wortmann, Edgar Jaeggi, Christopher K Macgowan, John C Kingdom, Mike Seed
BACKGROUND: Late-onset intrauterine growth restriction (IUGR) results from a failure of the placenta to supply adequate nutrients and oxygen to the rapidly growing late-gestation fetus. Limitations in current monitoring methods present the need for additional techniques for more accurate diagnosis of IUGR in utero. New magnetic resonance imaging (MRI) technology now provides a noninvasive technique for fetal hemodynamic assessment, which could provide additional information over conventional Doppler methods...
March 2016: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/26224608/biophysical-and-biochemical-markers-at-35-37-weeks-gestation-in-the-prediction-of-adverse-perinatal-outcome
#19
N Valiño, G Giunta, D M Gallo, R Akolekar, K H Nicolaides
OBJECTIVE: To investigate the potential value of biophysical and biochemical markers at 35-37 weeks' gestation in the prediction of adverse perinatal outcome. METHODS: This was a screening study in 3953 singleton pregnancies at 35-37 weeks' gestation. Estimated fetal weight (EFW), uterine artery pulsatility index (UtA-PI), umbilical artery (UA)-PI, fetal middle cerebral artery (MCA)-PI, mean arterial pressure (MAP), serum placental growth factor (PlGF) and soluble fms-like tyrosine kinase-1 (sFlt-1) were measured...
February 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/26153118/prominent-coronary-artery-flow-with-normal-coronary-artery-anatomy-is-a-rare-but-ominous-harbinger-of-poor-outcome-in-the-fetus
#20
COMPARATIVE STUDY
Yen K Bui, Lisa W Howley, Steven E Ambrose, Henry L Galan, Timothy M Crombleholme, Julia Drose, John Bokowski, Bettina F Cuneo
OBJECTIVES: "Heart sparing" refers to prominent antegrade fetal coronary artery (CA) blood flow readily visualized by color Doppler and is a harbinger of poor outcome in growth restricted fetus, but little is known of the features and presentation of heart sparing in normally grown fetuses. Our objective was to describe heart sparing effects in normally grown fetuses, and compare the presentation and outcome of heart sparing between fetuses with growth restriction and those who were normally grown...
2016: Journal of Maternal-fetal & Neonatal Medicine
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