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Uterine artery PI

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https://www.readbyqxmd.com/read/29319201/comparative-study-of-abdominal-versus-transvaginal-ultrasound-for-uterine-artery-doppler-velocimetry-at-11-to-13-weeks
#1
Marie-Elaine Demers, Samuel Dubé, Mélodie Bourdages, Cedric Gasse, Amélie Boutin, Mario Girard, Emmanuel Bujold, Suzanne Demers
OBJECTIVES: To compare the first-trimester uterine artery pulsatility index (PI) measured by abdominal and transvaginal ultrasound (US). METHODS: We performed a prospective study of singleton pregnant women recruited at 11 to 13 weeks' gestation. The mean uterine artery PI was obtained by abdominal followed by transvaginal US. The mean of the left and right uterine artery PIs was used, and differences between approaches were computed. The intraclass correlation coefficient and a Bland-Altman plot were used to compare the two approaches...
January 10, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29298964/-assessment-of-relationship-between-doppler-flows-in-pregnancies-after-41-week-and-the-incidence-of-cesarean-sections-with-induced-labour
#2
Hanna Makles, Jacek R Wilczyński
HASH(0x2f27ff0) AIM: The aim of the study was to assess a relationship between the Doppler flows in foetal vessels, i.e. the middle cerebral artery (MCA), umbilical artery (UMA), umbilical vein (UV) and ductus venosus (DV) as well as in maternal vessels, i.e. the right uterine artery (UAR), left uterine artery (UAL) and the incidence of cesarean sections in pregnancies after 41 week with induced labour. MATERIALS AND METHODS: The study included 130 pregnant women, including 100 pregnant women, between 41 and 42 weeks of gestation, in whom induced labour resulted in a cesarean section due to three main indications: lack of progress of labour (Group I-44), signs of foetal distress (Group II-32) and lack of response to induced labour (Group III-24)...
December 22, 2017: Polski Merkuriusz Lekarski: Organ Polskiego Towarzystwa Lekarskiego
https://www.readbyqxmd.com/read/29242974/effect-of-intramural-fibroid-on-uterine-and-endometrial-vascularity-in-infertile-women-scheduled-for-in-vitro-fertilization
#3
Ahmed Kamel, Akmal El-Mazny, Wafaa Ramadan, Suzy Abdelaziz, Sherine Gad-Allah, Hany Saad, Ahmed M Hussein, Emad Salah
PURPOSE: To study the effect of intramural fibroids on uterine and endometrial vascularity in infertile women scheduled for in-vitro fertilization (IVF). METHODS: 3D power Doppler was used to measure the endometrial volume and blood flow indices in 182 women with intramural fibroids not affecting the uterine cavity and compared them to a matched control group without fibroids. RESULTS: There was significantly increased vascularity in the endometrium of the fibroid group as denoted by higher endometrial VI (p = 0...
December 14, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29235099/variations-from-morning-to-afternoon-of-middle-cerebral-and-umbilical-artery-blood-flow-and-fetal-heart-rate-variability-and-fetal-characteristics-in-the-normally-developing-fetus
#4
Tehila Avitan, Ari Sanders, Ursula Brain, Dan Rurak, Tim F Oberlander, Ken Lim
OBJECTIVE: To determine if there are changes in maternal uterine blood flow, fetal brain blood flow, fetal heart rate variability, and umbilical blood flow between morning (AM) and afternoon (PM) in healthy, uncomplicated pregnancies. STUDY DESIGN: In this prospective study, 68 uncomplicated singleton pregnancies (mean 35 + 0.7 weeks gestation) underwent a standard observational protocol at both 08:00 (AM) and 13:30 (PM) of the same day. This protocol included Doppler measurements of uterine, umbilical, and fetal middle cerebral artery (MCA) volume flow parameters (flow, HR, peak systolic velocity [PSV], PI, and RI) followed by computerized cardiotocography...
December 13, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/29227585/effect-of-ultrafiltration-on-placental-fetal-blood-flow-in-pregnancy-of-woman-undergoing-chronic-hemodialysis
#5
Luiz Paulo José Marques, Paulo Roberto Silva Marinho, Regina Rocco, Caroline de Azevedo Martins, Henrique Novo Costa Pereira, Ana Clara Lopes Barbosa Ferreira
INTRODUCTION: Patient who was undergoing hemodialysis (HD) thrice weekly usually gain 1 to 4 kg of weight in interdialytic period, mainly due to fluid accumulation by ingestion of water. Ultrafiltration (UF) during HD will be need to remove fluid excess to avoid severe medical complications secondary to fluid overload. However, in pregnant woman UF can increase the episodes of intradialytic hypotension which may lead to placental ischemic injury and predispose to fetal distress. There is little information about safe fluid amount withdrawn by UF during pregnancy...
December 11, 2017: Hemodialysis International
https://www.readbyqxmd.com/read/29197294/gestational-ultrasonography-and-dopplerfluxometry-in-capuchin-monkeys-sapajus-apella-zoometric
#6
S A Miranda, D L Leão, K G Oliveira, I S Sodré, S F S Domingues
The objectives of the current study were as follows: 1) to evaluate blood flow in the uterine (UA) and umbilical (Uma) arteries in pregnant capuchin monkeys by measuring the resistive index (RI) and pulsatility index (PI); 2) to determine the presence or absence of the early diastolic notch and diastolic flow in the UA and Uma flow waveforms, respectively; 3) to perform conceptus echobiometry for fetal growth assessment during pregnancy; 4) to describe the moment that the fetal organs were initially observed; and 5) to determine when the diagnosis of fetal gender is possible...
November 26, 2017: Theriogenology
https://www.readbyqxmd.com/read/29183631/birth-weight-to-placenta-weight-ratio-and-its-relationship-to-ultrasonic-measurements-maternal-and-neonatal-morbidity-a-prospective-cohort-study-of-nulliparous-women
#7
N Salavati, S J Gordijn, U Sovio, R Zill-E-Huma, A Gebril, D S Charnock-Jones, S A Scherjon, G C S Smith
INTRODUCTION: Birth weight to placenta weight (BWPW)-ratio is an indicator of the ability of the placenta to maintain adequate nutrient supply to the fetus. We sought to investigate the relationship between BWPW-ratio with fetal growth, utero-placental Doppler and neonatal and maternal morbidity. METHODS: We studied a group of 3311 women recruited to a prospective cohort study of nulliparous women (Rosie Hospital, Cambridge, UK) who delivered a live born infant at term and whose placental weight and birth weight were known...
November 15, 2017: Placenta
https://www.readbyqxmd.com/read/29157099/the-association-of-first-trimester-uterine-arteries-doppler-velocimetry-with-different-clinical-phenotypes-of-hypertensive-disorders-of-pregnancy-a-longitudinal-study
#8
Tamara Stampalija, Lorenzo Monasta, Daniela D Di Martino, Mariachiara Quadrifoglio, Leila Lo Bello, Giuseppina D'Ottavio, Sara Zullino, Cristina Mastroianni, Daniela Casati, Valentina Signorelli, Eleonora Rosti, Vera Cecotti, Matteo Ceccarello, Enrico Ferrazzi
INTRODUCTION: Current classification of hypertensive disorders of pregnancy (HDP) is mostly based on temporal classification differentiating HDP according to early and late onset of the disease. However, epidemiological and clinical data suggest that there are two different clinical phenotypes of HDP that coexist at any gestational age: HDP associated to intrauterine growth restriction (HDP-IUGR) and HDP associated to appropriate for gestational age fetal growth (HDP-AGAf). The aim of the study was to evaluate the association of first trimester uterine arteries (UtA) by Doppler velocimetry, and maternal risk factors with HDP according to two different classifications: one based on gestational age at delivery (early- and late-HDP), and one based on longitudinal ultrasound evaluation of fetal growth (HDP-IUGR and HDP-AGAf), independently of the gestational age...
November 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/29104668/uterine-artery-blood-flow-and-microvessel-density-by-vaginal-color-doppler-ultrasonography-in-embryo-implantation-failure
#9
Zhen Li, Xingling Wang, Yichun Guan, Xiaona Yu, Jing Liu, Zhan Zhang
The purpose of this study was to investigate the clinical application of uterine artery blood flow parameters by vaginal color Doppler ultrasonography in patients with repeated embryo implantation failure and to examine the correlation between uterine artery blood flow parameters and microvessel density (MVD). We monitored the outcomes of in vitro fertilization and embryo transfer in eighty patients. We divided the patients into two groups: Pregnancy (successful pregnancy, n=50) and repeated implantation failure (more than two failures of in vitro fertilization-embryo transfer, n=30)...
November 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29102503/maternal-hemodynamics-a-method-to-classify-hypertensive-disorders-of-pregnancy
#10
Enrico Ferrazzi, Tamara Stampalija, Lorenzo Monasta, Daniela Di Martino, Sharona Vonck, Wilfried Gyselaers
BACKGROUND: The classification of hypertensive disorders of pregnancy is based on the time at the onset of hypertension, proteinuria, and other associated complications. Maternal hemodynamic interrogation in hypertensive disorders of pregnancy considers not only the peripheral blood pressure but also the entire cardiovascular system, and it might help to classify the different clinical phenotypes of this syndrome. OBJECTIVE: This study aimed to examine cardiovascular parameters in a cohort of patients affected by hypertensive disorders of pregnancy according to the clinical phenotypes that prioritize fetoplacental characteristics and not the time at onset of hypertensive disorders of pregnancy...
November 2, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29097177/first-trimester-screening-for-early-and-late-preeclampsia-using-maternal-characteristics-biomarkers-and-estimated-placental-volume
#11
Jiri Sonek, David Krantz, Jon Carmichael, Cathy Downing, Karen Jessup, Ziad Haidar, Shannon Ho, Terrence Hallahan, Harvey J Kliman, David McKenna
BACKGROUND: Preeclampsia is a major cause of perinatal morbidity and mortality. First-trimester screening has been shown to be effective in selecting patients at an increased risk for preeclampsia in some studies. OBJECTIVE: We sought to evaluate the feasibility of screening for preeclampsia in the first trimester based on maternal characteristics, medical history, biomarkers, and placental volume. STUDY DESIGN: This is a prospective observational nonintervention cohort study in an unselected US population...
October 31, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29090507/implications-of-failure-to-achieve-a-result-from-prenatal-maternal-serum-cell-free-dna-testing-a-historical-cohort-study
#12
N Chan, M-E Smet, R Sandow, F da Silva Costa, A McLennan
OBJECTIVE: To investigate the pregnancy outcomes in a cohort of women who failed to obtain a result in non-invasive prenatal testing (NIPT). DESIGN: Historical cohort study. SETTING: A multicentre private practice in Sydney, Australia. POPULATION: Women who failed to obtain a result from NIPT (n = 131). METHODS: The maternal characteristics, antenatal investigations and pregnancy outcomes for these women were compared with those who obtained a result at the same practice and to the general Australian obstetric population...
November 1, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/29032578/first-trimester-screening-for-pre-eclampsia-in-chinese-pregnancies-case-control-study
#13
Yvonne Kwun Yue Cheng, Tak Yeung Leung, Lai Wa Law, Yuen Ha Ting, Kwok Ming Law, Daljit Singh Sahota
OBJECTIVE: To assess the potential of screening for pre-eclampsia (PE) in a Chinese population. DESIGN: Case Control Study. SETTING: Teaching Hospital in Hong Kong. POPULATION: 3,330 women having a viable singleton pregnancy attending 1st trimester Down syndrome screening. METHODS: Mean arterial pressure (MAP), bilateral uterine artery pulsatility index (UtA-PI), and placental growth factor (PlGF) were measured...
October 15, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28976627/the-transverse-technique-a-complementary-approach-to-the-measurement-of-first-trimester-uterine-artery-doppler
#14
Olivier Drouin, Jo-Ann Johnson, Piya Chaemsaithong, Amy Metcalfe, Janie Huber, Jill Schwarzenberger, Erin Winters, Lesley Stavness, Ada W T Tse, Jing Lu, Wan Teng Lim, Tak Yeung Leung, Emmanuel Bujold, Daljit Sahota, Liona C Poon
OBJECTIVE: The objectives of this study were to 1) define the protocol for the first-trimester assessment of the uterine artery pulsatility index (UtA-PI) using the new transverse technique, 2) evaluate UtA-PI measured by the transverse approach versus that obtained by the conventional sagittal approach, and 3) determine if accelerated onsite training (both methods) of inexperienced sonographers can achieve reproducible UtA-PI measurements compared to that measured by an experienced sonographer...
October 4, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28960414/intra-and-inter-observer-reproducibility-of-third-trimester-uterine-artery-pulsatility-index
#15
Laura Marchi, Claudia Gaini, Chiara Franchi, Federico Mecacci, Caterina Bilardo, Lucia Pasquini
OBJECTIVES: The primary aim of the study was to investigate intra- and inter-observer reproducibility of Uterine Artery (UtA) Pulsatility Index (PI) in the third trimester of pregnancy. The secondary aim of the study was to examine whether high maternal Body Mass Index (BMI) or gestational age (GA) influence the reliability of this measurement. METHODS: Singleton pregnancies in women with known BMI were recruited between 30(+0) and 40(+0) weeks. UtA PI Doppler measurements were performed prospectively, independently and blindly by two Fetal Medicine Foundation accredited operators...
September 27, 2017: Prenatal Diagnosis
https://www.readbyqxmd.com/read/28934247/the-extent-of-intrauterine-growth-restriction-determines-the-severity-of-cerebral-injury-and-neurobehavioural-deficits-in-rodents
#16
Crystal A Ruff, Stuart D Faulkner, Prakasham Rumajogee, Stephanie Beldick, Warren Foltz, Jennifer Corrigan, Alfred Basilious, Shangjun Jiang, Shanojan Thiyagalingam, Jerome Y Yager, Michael G Fehlings
BACKGROUND: Cerebral Palsy (CP) is the most common physical pediatric neurodevelopmental disorder and spastic diplegic injury is its most frequent subtype. CP results in substantial neuromotor and cognitive impairments that have significant socioeconomic impact. Despite this, its underlying pathophysiological mechanisms and etiology remain incompletely understood. Furthermore, there is a need for clinically relevant injury models, which a) reflect the heterogeneity of the condition and b) can be used to evaluate new translational therapies...
2017: PloS One
https://www.readbyqxmd.com/read/28926826/a-low-cerebroplacental-ratio-at-20-24-weeks-of-gestation-can-predict-reduced-fetal-size-later-in-pregnancy-or-at-birth
#17
Edgar Hernandez-Andrade, Eli Maymon, Offer Erez, Homam Saker, Suchaya Luewan, Maynor Garcia, Hyunyoung Ahn, Adi L Tarca, Bogdan Done, Steven J Korzeniewski, Sonia S Hassan, Roberto Romero
AIM: To determine whether Doppler evaluation at 20-24 weeks of gestation can predict reduced fetal size later in pregnancy or at birth. METHODS: Fetal biometry and Doppler velocimetry were performed in 2,986 women with a singleton pregnancy at 20-24 weeks of gestation. Predictive performances of the umbilical artery pulsatility index (UA-PI) or the mean uterine artery pulsatility index (UtA-PI) >95th percentile, middle cerebral artery pulsatility index, or cerebroplacental ratio (CPR) <5th percentile for early small for gestational age (SGA; <34 weeks of gestation), late SGA (≥34 weeks of gestation), or SGA at birth (birthweight <10th percentile) were analyzed...
September 20, 2017: Fetal Diagnosis and Therapy
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
#18
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/28878835/uterine-artery-doppler-flow-indices-in-pregnant-women-during-the-11-weeks-0-days-and-13-weeks-6-days-gestational-ages-a-study-of-168-patients
#19
Voicu Dascau, Gheorghe Furau, Cristian Furau, Cristina Onel, Casiana Stanescu, Liliana Tataru, Cristina Ghib-Para, Cristina Popescu, Luminita Pilat, Maria Puschita
OBJECTIVES: Uterine artery Doppler flow studies during the 11th and 14th week of pregnancy are important in the prediction of preeclampsia and intrauterine growth restriction in pregnant women as well as in the prevention thereof. METHODS: Our study on Doppler flow indices of the uterine arteries involved 168 patients examined in our clinic, with pregnancies ranging from 11 weeks + 0 days to 13 weeks + 6 days. RESULTS: There were 72 patients from 11 weeks + 0 days to 11 weeks + 6 days (42...
January 2017: Mædica
https://www.readbyqxmd.com/read/28868250/the-relationship-between-uterine-artery-two-dimensional-color-doppler-measurement-and-pregnancy-outcome-a-prospective-observational-study
#20
Sudha Prasad, Ritu Goyal, Yogesh Kumar, Poonam Nayar, Supriya Hajela, Aswathy Kumaran, Rajesh Vairagi, Shalini Chauhan
BACKGROUND: The purpose of the study was to evaluate the role of uterine blood flow parameters measured by uterine artery two-dimensional (2D)-power color doppler (PCD) ultrasound in predicting fertility outcomes in women undergoing IVF-ET cycles. METHODS: In this prospective observational study, a total of 188 infertile women who underwent IVF-ET cycles were investigated. Uterine artery 2D-PD measurements were taken during early follicular phase and on day of trigger...
April 2017: Journal of Reproduction & Infertility
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