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Uterine doppler

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https://www.readbyqxmd.com/read/28643667/can-we-perform-a-prenatal-diagnosis-of-vasa-previa-to-improve-its-obstetrical-and-neonatal-outcomes
#1
E Nohuz, E Boulay, D Gallot, D Lemery, F Vendittelli
INTRODUCTION: Vasa previa (VP) is defined as a condition in which the fetal blood vessels, unsupported by the placenta or the umbilical cord, run through the membranes of the lower uterine segment. It is associated with a high risk of stillbirth by exsanguination. This study aimed to assess the clinical context of diagnosis of VP in order to elaborate a strategy for its prenatal diagnosis and to improve its obstetrical and neonatal outcomes. MATERIAL AND METHODS: This historical cohort study covered the period from January 1, 2011 to December 31, 2015...
April 2017: Journal of gynecology obstetrics and human reproduction
https://www.readbyqxmd.com/read/28640514/de-novo-abnormal-uteroplacental-circulation-in-the-third-trimester-pregnancy-outcome-and-pathological-implications
#2
Julia Binder, Caitriona Monaghan, Baskaran Thilaganathan, Silvia Carta, Asma Khalil
OBJECTIVE: Hypertensive disorders of pregnancy (HDP) are associated with impaired placentation, as evidenced by abnormal uterine artery (UtA) Doppler. UtA mean pulsatility index (PI) shows a progressive decline with gestational age (GA). However, previous studies have reported that a proportion of pregnancies demonstrate worsening of the UtA Doppler. The aim of this study was to investigate the incidence of HDP according to the change in the UtA mean PI between the second and third trimester...
June 22, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28632498/can-early-ultrasonography-explain-the-lower-miscarriage-rates-in-twin-as-compared-to-singleton-pregnancies-following-assisted-reproduction
#3
Ana Póvoa, Alexandra Matias, Pedro Xavier, Isaac Blickstein
OBJECTIVE: To compare first trimester 2D conventional and 3D power Doppler angiography measures in twins and singletons following assisted reproduction. METHODS: We prospectively evaluated 50 singleton and 47 twin pregnancies that eventually ended in live births. Patients were recruited from a single assisted reproductive technology (ART) center with standard treatment protocols. Obstetric ultrasound was performed at 8-9 weeks +6 days. Intervillous flow, uteroplacental circulation and uterine artery pulsatility (PI) and resistance index (RI) using two-dimensional (2D) ultrasound examination were evaluated...
June 20, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28612673/can-flavonoid-rich-chocolate-modulate-arterial-elasticity-and-pathological-uterine-artery-doppler-blood-flow-in-pregnant-women-a-pilot-study
#4
Emma von Wowern, Per Olofsson
INTRODUCTION: Dark chocolate has shown beneficial effects on cardiovascular health and might also modulate hypertensive complications in pregnancy and uteroplacental blood flow. Increased uteroplacental resistance is associated with systemic arterial stiffness. We aimed to investigate the short-term effect of flavonoid-rich chocolate on arterial stiffness and Doppler blood flow velocimetry indexes in pregnant women with compromised uteroplacental blood flow. METHODS: Doppler blood flow velocimetry and digital pulse wave analysis (DPA) were performed in 25 women pregnant in the second and third trimesters with uterine artery (UtA) score (UAS) 3-4, before and after 3 days of ingestion of chocolate with high flavonoid and antioxidant contents...
June 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28612629/uterine-artery-pulsatility-index-in-the-first-trimester-assessment-of-inter-sonographer-and-inter-sampling-site-measurement-differences
#5
Piya Chaemsaithong, Yuen Ha Ting, Kwun Yue Yvonne Cheng, Chiu Yee Liona Poon, Tak Yeung Leung, Daljit Singh Sahota
OBJECTIVE: To determine inter-sonographer, intersampling site pulsatility index differences in the ascending branch of the uterine artery (UtA-PI) and their effect on detection rates (DR) for early onset preeclampsia (PE). METHODS: A prospective observational study was conducted including 52 women with singleton viable pregnancy at 11-13 weeks' gestation. Consecutive bilateral UtA-PI measurements were performed by two sonographers. Both sonographers hold the Fetal Medicine Foundation (FMF) uterine artery Doppler assessment competency certificates...
June 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28600048/first-trimester-maternal-serum-analytes-and-second-trimester-uterine-artery-doppler-in-the-prediction-of-preeclampsia-and-fetal-growth-restriction
#6
Ning Yu, Hongyan Cui, Xu Chen, Ying Chang
OBJECTIVE: This study aimed to determine whether pregnancy-associated plasma protein-A (PAPP-A), free β-human chorionic gonadotropin (β-hCG), a disintegrin and metalloprotease 12 (ADAM12), and placenta protein 13 (PP13) in the first trimester, and uterine artery Doppler (UAD) in the second trimester, predict preeclampsia and fetal growth restriction (FGR). MATERIALS AND METHODS: Maternal serum levels of PAPP-A, free β-hCG, ADAM12, and PP13 at 11-13(+6) weeks of gestation and bilateral uterine artery pulsatility index (PI) at 22-24 weeks of gestation were measured in a nested case-control study within a prospective cohort...
June 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28596740/ultrasound-imaging-of-mouse-fetal-intracranial-hemorrhage-due-to-ischemia-reperfusion
#7
Kenichi Funamoto, Takuya Ito, Kiyoe Funamoto, Clarissa L Velayo, Yoshitaka Kimura
Despite vast improvement in perinatal care during the 30 years, the incidence rate of neonatal encephalopathy remains unchanged without any further Progress towards preventive strategies for the clinical impasse. Antenatal brain injury including fetal intracranial hemorrhage caused by ischemia/reperfusion is known as one of the primary triggers of neonatal injury. However, the mechanisms of antenatal brain injury are poorly understood unless better predictive models of the disease are developed. Here we show a mouse model for fetal intracranial hemorrhage in vivo developed to investigate the actual timing of hypoxia-ischemic events and their related mechanisms of injury...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28591361/doppler-velocimetry-in-fetal-rats-exposed-to-enoxaparin-and-unfractionated-heparin-ufh-during-pregnancy
#8
Flavio Renato de Almeida Senefonte, Ricardo Dutra Aydos, Vanessa Marcon de Oliveira, Marco Antonio Costa Bósio, Ernesto Antonio Figueiró-Filho
Purpose: To evaluate the effects of enoxaparin and unfractionated heparin (UFH) administered in prophylactic and therapeutic doses on fetal vessels in healthy pregnant Wistar rats, according to Doppler velocimetry measurements. Methods: Fifty animals were assigned to one of five groups: controls (saline), prophylactic and therapeutic enoxaparin (1 and 2 mg/kg/day, respectively), and prophylactic and therapeutic UFH (72 and 400 UI/kg/day, respectively). Uterine horns were examined by ultrasound for identification of live fetuses...
May 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28591340/uterine-artery-doppler-flow-velocimetry-parameters-for-predicting-gestational-trophoblastic-neoplasia-after-complete-hydatidiform-mole-a-prospective-cohort-study
#9
Flavia Tarabini Castellani Asmar, Antonio Rodrigues Braga-Neto, Jorge de Rezende-Filho, Juliana Marques Simões Villas-Boas, Rafael Cortés Charry, Izildinha Maesta
OBJECTIVES: Doppler ultrasonography can be used to assess neoangiogenesis, a characteristic feature of postmolar gestational trophoblastic neoplasia. However, there is limited information on whether uterine artery Doppler flow velocimetry parameters can predict gestational trophoblastic neoplasia following a complete hydatidiform mole. The purpose of this study was as follows: 1) to compare uterine blood flow before and after complete mole evacuation between women who developed postmolar gestational trophoblastic neoplasia and those who achieved spontaneous remission, 2) to assess the usefulness of uterine Doppler parameters as predictors of postmolar gestational trophoblastic neoplasia and to determine the best parameters and cutoff values for predicting postmolar gestational trophoblastic neoplasia...
May 2017: Clinics
https://www.readbyqxmd.com/read/28587344/acquired-uterine-arteriovenous-fistula-due-to-a-previous-cornual-pregnancy-with-placenta-accreta-a-case-report
#10
Dongdong Guan, Jie Wang, Liju Zong, Shan Li, You-Zhong Zhang
The present report describes a case of an acquired uterine arteriovenous fistula, which, following surgery and postoperative pathological analysis, was confirmed as a previous cornual pregnancy with placenta accreta. The patient was a 37-year-old woman (gravida 3; para 2) who had previously delivered two children via cesarean section (in 2004 and 2010, respectively) and also had a spontaneous abortion (2008). She had experienced continuous menstrual bleeding for ~20 days and had a history of prolonged (~30 days) vaginal bleeding 13 months earlier...
June 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28579623/reference-curve-for-the-mean-uterine-artery-pulsatility-index-in-singleton-pregnancies
#11
Alexander Weichert, Andreas Hagen, Michael Tchirikov, Ilka B Fuchs, Wolfgang Henrich, Michael Entezami
INTRODUCTION: Doppler sonography of the uterine artery (UA) is done to monitor pregnancies, because the detected flow patterns are useful to draw inferences about possible disorders of trophoblast invasion. Increased resistance in the UA is associated with an increased risk of preeclampsia and/or intrauterine growth restriction (IUGR) and perinatal mortality. In the absence of standardized figures, the normal ranges of the various available reference curves sometimes differ quite substantially from one another...
May 2017: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/28570613/clinical-ultrasound-and-molecular-biomarkers-for-early-prediction-of-large-for-gestational-age-infants-in-nulliparous-women-an-international-prospective-cohort-study
#12
Matias C Vieira, Lesley M E McCowan, Alexandra Gillett, Lucilla Poston, Elaine Fyfe, Gustaaf A Dekker, Philip N Baker, James J Walker, Louise C Kenny, Dharmintra Pasupathy
OBJECTIVE: To develop a prediction model for term infants born large for gestational age (LGA) by customised birthweight centiles. METHODS: International prospective cohort of nulliparous women with singleton pregnancy recruited to the Screening for Pregnancy Endpoints (SCOPE) study. LGA was defined as birthweight above the 90th customised centile, including adjustment for parity, ethnicity, maternal height and weight, fetal gender and gestational age. Clinical risk factors, ultrasound parameters and biomarkers at 14-16 or 19-21 weeks were combined into a prediction model for LGA infants at term using stepwise logistic regression in a training dataset...
2017: PloS One
https://www.readbyqxmd.com/read/28561908/successful-treatment-of-uterine-artery-pseudoaneurysm-with-laparoscopic-temporary-clamping-of-bilateral-uterine-arteries-followed-by-hysteroscopic-surgery
#13
Hajime Ota, Yoshiyuki Fukushi, Shinichiro Wada, Takafumi Fujino, Yuko Omori, Miki Kushima
Surgical strategies for the treatment of uterine artery pseudoaneurysm (UAP) include transarterial embolization and ultrasound-guided low-dose thrombin injection. Such strategies, however, have limitations and include the risk of ischemic damage to the uterus. We report a case of UAP treated with a new hysteroscopic and laparoscopic technique. A 29-year-old G1P0 woman with spontaneous abortion was transferred to the present institution because of hemorrhagic shock. We diagnosed ruptured UAP on transvaginal ultrasound with color Doppler...
May 31, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28534017/delayed-postpartum-hemoperitoneum-due-to-uterine-artery-pseudoaneurysm-rupture
#14
Kyu-Sang Kyeong, Ji-Yeon Moon, Song-Hwa Chae, Seung Hwa Hong, Minho Kang, Eun-Hwan Jeong
A 30-year-old woman experienced severe abdominal pain 8 days after vaginal delivery. The patient was diagnosed with hemoperitoneum due to rupture of the left uterine artery pseudoaneurysm, which was confirmed via ultrasound with color Doppler and computed tomography scans. This patient was treated with bilateral uterine artery embolization to maintain fertility. A uterine artery pseudoaneurysm that causes delayed postpartum hemorrhage can occur after cesarean section or vaginal delivery. A uterine artery pseudoaneurysm can be fatal, so its detection and diagnosis are critical...
May 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28501280/evaluation-of-placental-vascularization-by-three-dimensional-ultrasound-examination-in-second-and-third-trimester-of-pregnancies-complicated-by-chronic-hypertension-gestational-hypertension-or-pre-eclampsia
#15
Andrea Surányi, Ábel Altorjay, László Kaiser, Tibor Nyári, Gábor Németh
OBJECTIVES: The purpose of this study was to assess three-dimensional placental power Doppler indices in second and third trimester of pregnancies complicated by chronic-, gestational hypertension or pre-eclampsia. METHODS: We analyzed 226 pregnancies prospectively measuring three-dimensional placental power Doppler indices (vascularization index, flow index, vascularization flow index) in cases of normal blood pressure (N=109), chronic hypertension (N=43), gestational hypertension (N=57) and pre-eclampsia (N=17)...
April 2017: Pregnancy Hypertension
https://www.readbyqxmd.com/read/28471117/antepartum-hemorrhage-from-previous-cesarean-sectioned-uterus-as-a-potential-sign-of-uterine-artery-pseudoaneurysm
#16
Ning Zhang, Wei-Hua Lou, Xue-Bin Zhang, Jian-Hua Lin, Wen Di
Postpartum hemorrhage (PPH), a leading cause of maternal mortality, can occur within 24 h of delivery (primary PPH), or during the period from 24 h after delivery to Week 6 of puerperium (secondary PPH). It requires health professionals to be alert to the symptoms to ensure prompt diagnosis and treatment, especially in the case of rupture of a uterine artery pseudoaneurysm (UAP) due to its life-threatening consequence (Baba et al., 2014). Most of the published case reports or case serials describe UAP as a possible cause of delayed PPH after traumatic procedures during delivery or pregnancy termination, including cesarean section (CS), manual removal of the placenta, or dilation and curettage (D&C) (Wald, 2003)...
May 2017: Journal of Zhejiang University. Science. B
https://www.readbyqxmd.com/read/28466646/ultrasound-guided-transvaginal-thrombin-injection-of-uterine-arteries-pseudoaneurysms
#17
Cristina Ros, Daniel Barnes, Anna Fervienza, Gabriella Oses, Juan L Alcázar, Sergio Martínez-Román, Àngels Rovirosa, Francisco Carmona, Fernando Gómez
OBJECTIVE: To evaluate the utility of transvaginal ultrasound-guided thrombin injection (UGTI) to treat uterine artery pseudoaneurysms (UAPs) as an alternative to emergency arterial embolization. METHODS: Two females presenting with heavy vaginal bleeding were diagnosed with UAPs by pelvic CT scan. After UAP identification by transvaginal ultrasound, 2 cm(3) of thrombin (Tissucol(®); Baxter Healthcare Corporation, Munich, Germany) was slowly injected into the UAPs using a 30-cm long 22-gauge needle through a needle guide attached to the vaginal probe...
June 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28460672/two-dimensional-sonographic-and-doppler-changes-in-the-uteri-of-bitches-according-to-breed-estrus-cycle-phase-parity-and-fertility
#18
Luana Azevedo Freitas, Gustavo Lobato Mota, Herlon Victor Rodrigues Silva, Lúcia Daniel Machado Silva
This study aimed to evaluate the two-dimensional and Doppler ultrasonographic features of bitches' uteri according to breed, cycle phase, parity and fertility during the follicular and early diestrus phases. Thirty-nine pubertal bitches were divided into groups according to breed, parity, and fertility. Sonographic assessments started from the first day of vaginal bleeding and were performed weekly for a month. The diameter of the uterine body was measured longitudinally and the uterine characteristics observed sonographically were evaluated...
June 2017: Theriogenology
https://www.readbyqxmd.com/read/28452161/perinatal-outcome-and-placental-apoptosis-in-patients-with-late-onset-pre-eclampsia-and-abnormal-uterine-artery-doppler-at-diagnosis
#19
Marcelo Rodríguez, Constanza Couve-Pérez, Sebastián San Martín, Felipe Martínez, Carlo Lozano, Alvaro Sepúlveda-Martínez
OBJECTIVE: To determine the rate of placental apoptosis and adverse perinatal outcome in patients with late pre-eclampsia and altered uterine artery (UtA) Doppler. METHODS: A cohort study was performed. Patients with a diagnosis of late pre-eclampsia (l-PE) were stratified according to the UtA Doppler status at diagnosis (below or above the 95(th) percentile). A logistic regression analysis was performed to identify the association between an abnormal UtA Doppler and the presence of adverse maternal and perinatal outcomes...
April 28, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28446939/management-of-uterine-artery-pseudoaneurysm-advanced-ultrasonography-imaging-and-laparoscopic-surgery-as-an-alternative-method-to-angio-computed-tomography-and-transarterial-embolization
#20
Michał Ciebiera, Aneta Słabuszewska-Jóźwiak, Kornelia Zaręba, Grzegorz Jakiel
Uterine artery pseudoaneurysms (UAP) are rare but potentially life-threatening lesions. They may occur after traumatic deliveries, cesarean sections, and other interventions. We present a case of a 39-year-old woman with a UAP. The patient was accurately diagnosed using ultrasound imaging, with subsequent diagnostic hysteroscopy and laparoscopic excision of the UAP. In the present case, a ligation of the artery branch was performed to provide accurate hemostasis during UAP dissection. The vascular lesion was partially enucleated and removed, followed by recreation of the previous uterine shape...
2017: Wideochirurgia i Inne Techniki Mało Inwazyjne, Videosurgery and Other Miniinvasive Techniques
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