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Umbilical artery Doppler

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https://www.readbyqxmd.com/read/27874184/antenatal-ultrasound-features-in-fetuses-with-gastroschisis-and-its-prediction-in-neonatal-outcome
#1
Jessica A Robertson, Roy M Kimble, Kellie Stockton, Renuka Sekar
BACKGROUND: Gastroschisis is the most common major congenital anomaly managed by paediatric surgeons. The significance of certain associated antenatal ultrasound features in determining fetal outcome is under discussion. AIM: The study aims to define if associated antenatal ultrasound features of gastroschisis are useful prognostic markers for fetal outcome. By establishing the significance of features, including extra- and intra-abdominal bowel dilatation, stomach herniation, stomach dilatation, bowel matting, growth restriction, abnormal umbilical artery (UA) Doppler ultrasounds, and abnormal amniotic fluid volume, it is hoped clinicians will have enhanced ability to counsel parents about the likely outcomes for their infant...
November 22, 2016: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27859836/outcome-in-monochorionic-twin-pregnancies-with-selective-intrauterine-growth-restriction-according-to-the-umbilical-artery-doppler-pattern-of-the-smaller-twin-a-systematic-review-and-meta-analysis
#2
REVIEW
Danilo Buca, Giorgio Pagani, Giuseppe Rizzo, Alessandra Familiari, Maria Elena Flacco, Lamberto Manzoli, Marco Liberati, Francesco Fanfani, Giovanni Scambia, Francesco D'Antonio
OBJECTIVE: To explore the outcome of monochorionic (MC) twin pregnancies affected by selective intra-uterine growth restriction (sIUGR) according to the umbilical artery Doppler pattern of the smaller twin. METHODS: Medline, Embase, Cinhal and ClinicalTrials.gov databases (2000-2016) were searched. sIUGR was defined as the presence of one twin with estimated fetal weight and/or abdominal circumference less than 10(th) or 5(th) percentile and classified according to the umbilical artery Doppler flow pattern of the smaller twin (type I: persistently positive, type II: persistently absent/reversed, type III: intermittently absent/reversed)...
November 18, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27858967/placental-pulsatility-index-a-new-more-sensitive-parameter-for-predicting-adverse-outcome-in-pregnancies-suspected-of-fetal-growth-restriction
#3
Saemundur Gudmundsson, Kari Flo, Gisela Ghosh, Tom Wilsgaard, Ganesh Acharya
INTRODUCTION: The pulsatility indices (PI) of the umbilical (UA) and uterine (UtA) arteries are used as the surrogate measures of utero-placental perfusion. Combining the two might simplify the evaluation of total placental vascular impedance, possibly improve prediction of adverse outcomes and help to identify pregnancies with suspected fetal growth restriction that need more intense surveillance. MATERIAL AND METHODS: UA and UtA blood flow velocities were recorded using pulsed-wave Doppler in a longitudinal study of 53 low-risk pregnancies (248 observations) during 20-40 weeks of gestation...
November 17, 2016: Acta Obstetricia et Gynecologica Scandinavica
https://www.readbyqxmd.com/read/27836536/doppler-screening-and-predictors-of-adverse-outcomes-in-high-risk-pregnancies-affected-by-tobacco
#4
Alison Stalzer, Dara Seybold, Deena Hossino, Mike Broce, Byron Calhoun
OBJECTIVE: The purpose of this study was to investigate associations between Doppler measurements and adverse outcomes in an obstetric population with high tobacco use. METHODS: This retrospective study included patients with Doppler data (umbilical systolic/diastolic velocity ratios (S/D), uterine S/D, uterine left/right ratio index (RI)). Receiver operator characteristic curve analysis determined cut-off elevated Doppler indices. Stepwise logistic regression was used to predict adverse outcomes...
November 9, 2016: Reproductive Toxicology
https://www.readbyqxmd.com/read/27831924/transient-fetal-blood-redistribution-associated-with-maternal-supine-position
#5
Karina P Silva, Tatiana Emy N K Hamamoto, Roseli M Y Nomura
OBJECTIVE: To investigate whether fetal blood circulation is influenced by the maternal supine position. METHODS: The inclusion criteria were good health, a singleton pregnancy, maternal age between 18 and 40 years, gestational age between 36 and 40 weeks, and an agreement to participate in the study. Each participant (n=20) was initially asked to adopt the left lateral position for 5 min, while fetal Doppler measurements were taken of the fetal middle cerebral artery (MCA), umbilical artery (UA), and umbilical vein (UV)...
November 10, 2016: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/27824563/adaptive-spectral-envelope-estimation-for-doppler-ultrasound
#6
Aditi Kathpalia, Yucel Karabiyik, Sturla H Eik-Nes, Eva Tegnander, Ingvild Kinn Ekroll, Gabriel Kiss, Hans Torp
Estimation of accurate maximum velocities and spectral envelope in ultrasound Doppler blood flow spectrograms are both essential for clinical diagnostic purposes. However, obtaining accurate maximum velocity is not straightforward due to intrinsic spectral broadening and variance in the power spectrum estimate. The method proposed in this paper for maximum velocity point detection has been developed by modifying an existing method-signal noise slope intersection, incorporating in it steps from an altered version of another method called geometric method...
November 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/27813120/prediction-of-neonatal-outcome-of-ttts-by-fetal-heart-and-doppler-ultrasound-parameters-before-and-after-laser-treatment
#7
A Delabaere, F Leduc, Q Reboul, F Fuchs, S Wavrant, J C Fouron, F Audibert
OBJECTIVES: To determine the prognostic value of fetal Doppler and echocardiographic parameters for neonatal survival up to 30 days after laser coagulation in monochorionic pregnancies complicated by twin-twin transfusion syndrome (TTTS). METHODS: Fetal echocardiography and outcome data of consecutive cases of TTTS treated by laser were retrospectively reviewed. Hemodynamic and cardiac function parameters were collected before and after laser. RESULTS: Between February 2006 and January 2015, 106 fetoscopic laser were performed...
November 3, 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27789620/scalp-congenital-hemangioma-with-associated-high-output-cardiac-failure-in-a-premature-infant-case-report-and-review-of-literature
#8
Sumedh S Shah, Brian M Snelling, Samir Sur, Alexandra R Ramnath, Emmalee S Bandstra, Dileep R Yavagal
INTRODUCTION: Scalp congenital hemangiomas (CHs) are rare vascular malformations among infants; they can be associated with an array of complications, including cardiac and cosmetic issues. Here, we report the endovascular treatment of a premature infant with a suspected large right parietal scalp hemangioma and associated high-output cardiac failure. CASE DESCRIPTION: A two-day-old female premature infant (29 weeks gestational age; 1330 g birth weight) was referred by the neonatologists to our department for consultation and potential treatment of a large right parietal CH causing abrupt hypotension and high-output cardiac failure...
October 27, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27780536/placental-disease-and-abnormal-umbilical-artery-doppler-waveforms-in-trisomy-21-pregnancy-a-case-control-study
#9
Edward Corry, Fionnuala Mone, Ricardo Segurado, Paul Downey, Peter McParland, Fionnuala M McAuliffe, Eoghan E Mooney
INTRODUCTION: The objectives of this study were firstly to determine the proportion of placental pathology in fetuses affected by trisomy 21 (T21) using current pathological descriptive terminology and secondly to examine if a correlation existed between the finding of an abnormal umbilical artery Doppler (UAD) waveform, the presence of T21 and defined placental pathological categories. METHODS: This case-control study assessed singleton fetuses with karyotypically confirmed trisomy 21 where placental histopathology had been conducted from 2003 to 2015 inclusive, within a university tertiary obstetric centre...
November 2016: Placenta
https://www.readbyqxmd.com/read/27767969/actual-vs-optimal-fetal-hematocrit-measured%C3%A2-with-punctures-of-cord-blood-in%C3%A2-utero-relationship-with-umbilical-artery%C3%A2-resistance
#10
Brun Jean-Frédéric, Boulot Pierre, Varlet-Marie Emmanuelle
Physiological studies on fetal blood in narrow glass tubes have suggested that fetal optimal hematocrit (hct) might be as high as 60%. A theoretical 'ideal' hct can also be predicted with a theoretical curve of hematocrit/viscosity (h/η) ratio vs hct constructed with Quemada's model. We used the database of one of our previous papers on fetal hemorheology to reinterpret its results with this concept. A series of 28 intrauterine cord punctures (between 19 and 33 weeks gestation) with doppler measurements of resistance in umbilical arteries was studied...
October 18, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27762476/normogram-of-umbilical-artery-doppler-indices-in-singleton-pregnancies-in-south-western-nigerian-women
#11
Oluwagbemiga Oluwole Ayoola, Peter Bulus, Olabisi Morebisi Loto, Bukunmi Michael Idowu
AIM: To determine the Doppler indices of the umbilical arteries in normal singleton pregnancy with a view to generating local reference ranges. METHODS: In this prospective, cross-sectional study, 400 pregnant women at 15-39 weeks' gestational age, with estimated fetal weight within the 10th and 90th percentile, no fetal malformation(s), and without any history of maternal medical disease, were recruited. Umbilical arteries were assessed on ultrasound, with the subjects in the supine position...
October 20, 2016: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/27755130/twin-pregnancy-complicated-by-selective-growth-restriction
#12
Rosemary Townsend, Asma Khalil
PURPOSE OF REVIEW: Selective intrauterine growth restriction (sIUGR) in twin pregnancies presents a complex management problem for the fetal medicine specialist. This review summarizes what is currently known about sIUGR pathophysiology, particularly in monochorionic pregnancies and looks at the results of early trials of fetal intervention in high-risk sIUGR pregnancies. RECENT FINDINGS: sIUGR in monochorionic pregnancies is due to unequal placental sharing, but the clinical outcome is determined by the characteristics of the placental vascular anastomoses...
October 15, 2016: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27739590/n-acetyl-cysteine-a-glutathione-precursor-reverts-vascular-dysfunction-and-endothelial-epigenetic-programming-in-intrauterine-growth-restricted-guinea-pigs
#13
Emilio A Herrera, Francisca Cifuentes-Zúñiga, Esteban Figueroa, Cristian Villanueva, Cherie Hernández, René Alegría, Viviana Arroyo, Estefania Peñaloza, Marcelo Farías, Ricardo Uauy, Paola Casanello, Bernardo J Krause
In humans, intrauterine growth restriction (IUGR) is associated with vascular dysfunction, oxidative stress and signs of endothelial programming in umbilical vessels. We aimed to determine the effects of maternal antioxidant treatment with N-acetyl cysteine (NAC) on fetal endothelial function and eNOS programming in IUGR guinea pigs. IUGR was induced by implanting ameroid constrictors on uterine arteries of pregnant guinea pigs at mid gestation, receiving half of the sows NAC in the drinking water (from day 34 until term)...
October 14, 2016: Journal of Physiology
https://www.readbyqxmd.com/read/27680818/h2-maternal-hemodynamic-status-in-pregnancies-complicated-by-intrauterine-growth-restriction-iugr-and-post-partum-follow-up
#14
D Di Martino, S Zullino, D Casati, A S Grimaldi, V Sterpi, G Principato, M Garbin, E Ferrazzi
AIMS: To investigate maternal hemodynamic status in pregnancies complicated by IUGR and in the post-partum. METHODS: In this prospective study, we enrolled pregnant women between 24 and 38 weeks divided in severe and mild IUGR and a group of controls matched for gestational age. Severe IUGR was defined as abdominal circumference <5th centile and a Doppler velocimetry in umbilical artery42SD. Mild IUGR was defined as an abdominal circumference <10th centile and a Doppler velocimetry in umbilical artery <2SD...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27680800/d4-mca-uta-ratio-at-first-observation-is-associated-with-birthweight-in-late-onset-iugr
#15
Serena Simeone, Marianna Pina Rambaldi, Caterina Serena, Serena Ottanelli, Federico Mecacci
INTRODUCTION: MCA and uterine artery Doppler PI are commonly used in the evaluation of IUGR. Targets: This retrospective pilot study aims to investigate whether MCA/UtA ratio may identify adverse outcome in late onset IUGRs. A cohort of 69 pregnancies affected with late IUGR which underwent labor induction according to local protocols was retrospectively revised on the relationship between MCA/UtA ratio at first observation and the following adverse outcomes: cesarean section for nonreassuring fetal status, birthweight (expressed as percentile and continuous values, umbilical artery pH, NICU admission and Apgar score < 7 after 1 and 5 min...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27680793/c2-maternal-cardiac-deceleration-capacity-a-novel-insight-into-maternal-autonomic-function
#16
D Casati, T Stampalija, E Ferrazzi, A Alberti, I Scebba, A Paganelli, D Di Martino, M L Muggiasca, A Bauer
OBJECTIVE: To explore maternal cardiac deceleration capacity (DC), a marker of autonomic function derived from heart rate variability analysis, in pregnancies complicated by intrauterine growth restriction (IUGR) and hypertensive disorders of pregnancy (HDP) associated to IUGR (HDP-IUGR) or to appropriate for gestational age fetuses (HDP-AGAf). METHODS: Single-center case-control study conducted at Buzzi Children's Hospital, Milan. Maternal electrocardiograms were analyzed by Phase-Rectified Signal Averaging (PRSA) to obtain cardiac beat-to-beat DC in women with: HDP-IUGR; HDP-AGAf; severe-IUGR; mild- IUGR; uncomplicated pregnancies...
August 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27651594/which-is-superior-doppler-velocimetry-or-non-stress-test-or-both-in-predicting-the-perinatal-outcome-of-high-risk-pregnancies
#17
Vijaya Subramanian, Janani Venkat, Mohana Dhanapal
AIM AND OBJECTIVES: To analyze which is superior, Doppler velocimetry or non-stress test or both by means of categorization into four groups and comparing the prediction of perinatal outcome in high-risk pregnancies like anemia, hypertensive disorders of pregnancies. MATERIALS AND METHODS: This was a prospective study conducted at the Department of Obstetrics and Gynaecology, ISO KGH, Madras Medical College, Chennai, in the year 2014. Two hundred high-risk pregnancies like anemia, hypertensive disorders of pregnancy were included in the study...
October 2016: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/27649292/placental-pathology-in-relation-to-uterine-artery-doppler-findings-in-pregnancies-with-severe-intrauterine-growth-restriction-and-abnormal-umbilical-artery-doppler-changes
#18
Khrystyna Levytska, Mary Higgins, Sarah Keating, Nir Melamed, Melissa Walker, Neil J Sebire, John C P Kingdom
Objectives Current guidelines for diagnosis and management of early-onset intrauterine growth restriction (IUGR) rely on umbilical artery Doppler (UAD), without including uterine artery Doppler (UtAD). We hypothesized that IUGR cases with abnormal UAD but normal UtAD has a different spectrum of placental pathology compared with those with abnormal UtAD. Study Design Retrospective review of pregnancies with sonographic evidence of IUGR and abnormal UAD prior to delivery. Cases with ≥ 1 UtAD record(s) after 18(+0) weeks' gestation and placental pathology were included...
September 20, 2016: American Journal of Perinatology
https://www.readbyqxmd.com/read/27647570/ep15-19-umbilical-artery-doppler-pattern-in-fetuses-with-two-vessel-cord
#19
E Contro, L Bartolini, D Bernabini, G Pilu, N Rizzo, A Farina
No abstract text is available yet for this article.
September 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27645312/ep21-05-umbilical-artery-doppler-findings-in-donor-survivors-at-one-week-from-endoscopic-equatorial-laser-for-twin-twin-transfusion-syndrome
#20
I Fabietti, N Persico, F D'Ambrosi, F Carbone, M Riccardi, E Aiello, M Ossola, S M Boito, F Mosca, L Fedele
No abstract text is available yet for this article.
September 2016: Ultrasound in Obstetrics & Gynecology
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