keyword
MENU ▼
Read by QxMD icon Read
search

Fetal doppler ultrasound

keyword
https://www.readbyqxmd.com/read/27894704/antenatal-fetal-surveillance-in-multiple-pregnancies
#1
REVIEW
Dick Oepkes, Marieke Sueters
Multiple pregnancies occur either spontaneously or because of assisted reproduction techniques in 1-3% of pregnancies. The presence of more than one fetus in the womb is associated with a range of possible complications, both for the mother and fetuses. Early detection of these complications followed by timely and appropriate management will reduce the risk of adverse outcomes. The techniques, skills, and experience for timely detection of complications and managing them appropriately require sufficient training and exposure...
September 29, 2016: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27874184/antenatal-ultrasound-features-in-fetuses-with-gastroschisis-and-its-prediction-in-neonatal-outcome
#2
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/27862084/intra-and-inter-observer-reproducibility-and-generalizability-of-first-trimester-uterine-artery-pulsatility-index-by-transabdominal-and-transvaginal-ultrasound
#3
Laura Marchi, Eva Zwertbroek, Judith Snelder, Maaike Kloosterman, Caterina Maddalena Bilardo
OBJECTIVES: The primary aim of the study was to assess intra-observer and inter-observer reproducibility and generalizability (general reliability) of first trimester Doppler measurements of uterine arteries (UtA) performed both transabdominally (TA) and transvaginally (TV). Secondary aims were to investigate whether maternal BMI and acquisition modality (transabdominal or transvaginal) affect feasibility and reliability of UtA Doppler evaluation. METHODS: Singleton pregnancies between 11(+0) and 13(+6) weeks underwent TA and TV Doppler measurements of UtA prospectively, blindly and independently by Fetal Medicine Foundation-accredited operators...
November 16, 2016: Prenatal Diagnosis
https://www.readbyqxmd.com/read/27858228/prenatal-diagnosis-of-abnormal-umbilical-cord-insertion-a-rare-case-of-furcate-insertion
#4
Yasuyuki Fujita, Yasuo Yumoto, Kiyoko Kato
Furcate insertion (FI) is an extremely rare abnormality of umbilical cord insertion. One of the complications associated with FI is hemorrhage from the umbilical vein at the site of FI of the umbilical cord, which can cause sudden intrauterine fetal death. Because of its rarity, no prenatal diagnosis of FI has been reported. A 31-year-old woman at 34 weeks' gestation was referred to us for suspected abnormal cord insertion. Ultrasonography showed normal fetal growth and amniotic fluid volume, with no fetal anomalies...
November 17, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27845691/non-invasive-evaluation-of-placental-blood-flow-lessons-from-animal-models
#5
Eve Mourier, Anne Tarrade, Jie Duan, Christophe Richard, Charline Bertholdt, Marine Beaumont, Olivier Morel, Pascale Chavatte-Palmer
In human obstetrics, placental vascularisation impairment is frequent as well as linked to severe pathological events (preeclampsia and intra-uterine growth restriction) and there is a need for reliable methods allowing non-invasive evaluation of placental blood flow. Uteroplacental vascularisation is complex and animal models are essential for the technical development and safety assessment of these imaging tools for human clinical use but these techniques can also be applied in the veterinary context. This paper reviews how ultrasound based imaging methods such as 2D and 3D Doppler can provide valuable insight for the exploration of placental blood flow both in humans and animals and how new approaches such as the use of ultrasound contrast agents or ultrafast Doppler may allow to discriminate between maternal (non-pulsatile) and fetal (pulsatile) blood flow in the placenta...
November 14, 2016: Reproduction: the Official Journal of the Society for the Study of Fertility
https://www.readbyqxmd.com/read/27824565/visualization-of-small-diameter-vessels-by-reduction-of-incoherent-reverberation-with-coherent-flow-power-doppler
#6
You Leo Li, Dongwoon Hyun, Lotfi Abou-Elkacem, Juergen Karl Willmann, Jeremy J Dahl
Power Doppler (PD) imaging is a widely used technique for flow detection. Despite the wide use of Doppler ultrasound, limitations exist in the ability of Doppler ultrasound to assess slow flow in the small-diameter vasculature, such as the maternal spiral arteries and fetal villous arteries of the placenta and focal liver lesions. The sensitivity of PD in small vessel detection is limited by the low signal produced by slow flow and the noise associated with small vessels. The noise sources include electronic noise, stationary or slowly moving tissue clutter, reverberation clutter, and off-axis scattering from tissue, among others...
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/27777190/-correlation-analysis-of-fetal-middle-cerebral-artery-peak-systolic-velocity-cardiothoracic-ratio-and-crown-rump-length-in-early-pregnancy
#8
Xu-Jie Deng, Cui-Hua Chen, Yu-Wen Qiu, Shu-Fang Xiao, Shu-Xin Liao, Mei Zhong, Fang Yang
OBJECTIVE: To explore the pattern of variations in middle cerebral artery peak systolic velocity (MCA PSV) and cardiothoracic ratio (CTR) during early pregnancy, establish their reference ranges and explore their correlation with the crown-rump length (CRL). METHODS: A total of 522 pregnant women with normal findings in antenatal examinations underwent routine color Doppler ultrasound examination to collect the data of MCA PSV, CTR and CRL. The reference ranges of MCA PSV and CTR for different CRL levels were established, and the correlation of MCA PSV and CTR with CRL was analyzed...
October 20, 2016: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/27775930/fetal-motion-estimation-from-noninvasive-cardiac-signal-recordings
#9
Hadis Biglari, Reza Sameni
Fetal motility is a widely accepted indicator of the well-being of a fetus. In previous research, it has be shown that fetal motion (FM) is coherent with fetal heart rate accelerations and an indicator for active/rest cycles of the fetus. The most common approach for FM and fetal heart rate (FHR) assessment is by Doppler ultrasound (DUS). While DUS is the most common approach for studying the mechanical activities of the heart, noninvasive fetal electrocardiogram (ECG) and magnetocardiogram (MCG) recording and processing techniques have been considered as a possible competitor (or complement) for the DUS...
November 2016: Physiological Measurement
https://www.readbyqxmd.com/read/27762476/normogram-of-umbilical-artery-doppler-indices-in-singleton-pregnancies-in-south-western-nigerian-women
#10
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/27756534/antenatal-fetal-surveillance-assessment-of-the-afv
#11
Dawn S Hughes, Everett F Magann
The evaluation of amniotic fluid volume (AFV) is an established part of the antenatal surveillance of pregnancies at risk for an adverse pregnancy outcome. The two most commonly used ultrasound techniques to estimate AFV are the amniotic fluid index (AFI) and the single deepest pocket (SDP). Four studies have defined normal AFVs, and although their normal volumes have similarities, there are also differences primarily due to the statistical methodology used in each study. Dye-determined AFV correlates with ultrasound estimates for normal fluid volumes but correlates poorly for oligohydramnios and polyhydramnios...
September 16, 2016: Best Practice & Research. Clinical Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/27753109/unguarded-tricuspid-orifice-a-rare-cause-of-fetal-right-atrial-dilatation-with-characteristic-color-doppler-sign-case-report-with-review-of-literature
#12
Seneesh Kumar Vikraman, Vipin Chandra, Bijoy Balakrishnan, Sunil Jaiman, Meenu Batra, Gopinathan Kannoly
The anatomic causes for fetal right atrial dilatation with tricuspid regurgitation include Ebstein anomaly, tricuspid dysplasia, unguarded tricuspid orifice, and Uhl anomaly. Unguarded tricuspid orifice is characterized by complete or partial agenesis of the tricuspid valvular and subvalvular structures. It is commonly associated with pulmonary atresia. Its prenatal diagnosis is usually associated with unfavorable prognosis. We present a prenatally diagnosed case of fetal unguarded tricuspid orifice with description of its diagnostic workup, along with a review of literature, to enhance the understanding of this rarely reported entity...
October 18, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27741366/the-diverse-outcome-of-early-prenatal-diagnosis-of-pulmonary-stenosis
#13
Moshe Bronshtein, Zeev Blumenfeld, Asaad Choury, Ayala Gover
OBJECTIVES: To assess the natural history and outcome of fetal pulmonary stenosis [PS] detected at 14 to 16 weeks gestation. METHODS: This is a retrospective study, in the years 2004-2015, with serial follow up during pregnancy. Patients referred for complete early fetal ultrasound including all fetal systems and a fetal echocardiogram. Ninety seven percent of the women were low risk, and 3% had risk factors such as maternal type 1 diabetes mellitus, exposure to teratogenic drugs or anomalies in previous pregnancies or in other family members...
October 14, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27740478/visualization-of-small-diameter-vessels-by-reduction-of-incoherent-reverberation-with-coherent-flow-power-doppler
#14
You Li, Dongwoon Hyun, Lotfi Abou-Elkacem, Juergen Willmann, Jeremy Dahl
Power Doppler (PD) imaging is a widely used technique for flow detection. Despite the wide use of Doppler ultrasound, limitations exist in the ability of Doppler ultrasound to assess slow flow in small-diameter vasculature, such as the maternal spiral arteries and fetal villous arteries of the placenta and focal liver lesions. The sensitivity of PD in small vessel detection is limited by the low signal produced by slow flow and the noise associated with small vessels. The noise sources include electronic noise, stationary or slowly moving tissue clutter, reverberation clutter, and off-axis scattering from tissue, among others...
October 10, 2016: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
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
#15
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/27696434/sonographic-diagnosis-of-partial-versus-complete-molar-pregnancy-a-reappraisal
#16
Julia L Savage, Katherine E Maturen, Erika L Mowers, Katherine B Pasque, Ashish P Wasnik, Vanessa K Dalton, Jason D Bell
PURPOSE: To assess the prospective sonographic diagnosis of molar pregnancy and compare sonographic features of complete versus partial molar pregnancy. METHODS: This institutional review board--approved retrospective chart review conducted between 2001 and 2011 identified 70 women with a histopathologic diagnosis of molar pregnancy and with available sonograms. Clinical data, images, and reports were reviewed, and features enumerated by radiologists blinded to the final diagnosis...
October 3, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27684833/use-of-the-glidescope-video-laryngoscope-for-intubation-during-ex-utero-intrapartum-treatment-in-a-fetus-with-a-giant-cyst-of-the-4th-branchial-cleft-a-case-report
#17
Sung Hye Byun, So Young Lee, Seong Yeon Hong, Taeha Ryu, Baek Jin Kim, Jin Yong Jung
INTRODUCTION: In fetuses who are predicted to be at risk of catastrophic airway obstruction at delivery, the ex utero intrapartum treatment (EXIT) procedure is useful for securing the fetal airway while maintaining fetal oxygenation via placental circulation. Factors, including poor posture of the fetus and physician, narrow visual field, and issues of contamination in the aseptic surgical field, make fetal intubation during the EXIT procedure difficult. Herein, we report our experience of the usefulness of the GlideScope video laryngoscope (GVL) for intubation during the EXIT procedure...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27684831/length-to-width-ratio-of-the-ductus-venosus-in-simple-screening-for-fetal-congenital-heart-diseases-in-the-second-trimester
#18
Wei-Hsiu Chiu, Shy-Ming Lee, Tao-Hsin Tung, Xiao-Mei Tang, Ren-Shyan Liu, Ran-Chou Chen
Antenatal diagnosis of congenital heart disease (CHD) is still low even though screening was first introduced over 25 years ago. The purpose of our study was to determine the efficacy of a second-trimester prenatal ultrasonographic method of screening for CHD.From September 2012 to September 2013, the length and width of the fetal ductus venosus were measured sonographically in 1006 singleton fetuses, and the ratio of length to width was calculated. The accuracy of each fetal measurement and Doppler ultrasonography were determined...
September 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27661402/placental-implantation-abnormalities-a-modern-approach
#19
Sevan A Vahanian, Anthony M Vintzileos
PURPOSE OF REVIEW: Placental implantation abnormalities (PIAs) comprise a large group of disorders associated with significant maternal, fetal, and neonatal morbidity. RECENT FINDINGS: Risk factors include prior uterine surgery/myometrial scarring and the presence of placenta previa with or without prior cesarean delivery. Newly identified risk factors include previous prelabor cesarean delivery and previous postpartum hemorrhage. PIAs contribute substantially to preterm birth with prematurity rates ranging from 38 to 82%...
December 2016: Current Opinion in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27647518/ep02-03-ultrasound-and-doppler-examination-fetal-brain-for-detection-cns-lesions-in-preterm-birth
#20
I V Ignatko
No abstract text is available yet for this article.
September 2016: Ultrasound in Obstetrics & Gynecology
keyword
keyword
29995
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"