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Uterine artery PI

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https://www.readbyqxmd.com/read/27914630/uterine-blood-flow-in-sheep-and-goats-during-the-peri-parturient-period-assessed-by-transrectal-doppler-sonography
#1
Mohammed Elmetwally, Heinrich Bollwein
The aim of the present study was to evaluate uterine blood flow (UBF) during the postpartum period in small ruminants. The study involved measures of UBF in 5 ewes and 5 goats during the first 4 weeks after parturition. Transrectal quantification of UBF was assessed by determining the diameter (DM), time averaged mean velocity (TAMEAN), blood flow volume (BFV), blood flow acceleration (ACCE) and pulsatility index (PI) in the uterine arteries ipsilateral to the previously gravid uterine horn(s) at Wk 20 of gestation and every 3days from the day of parturition (D 0) until Day 27 postpartum (D 27)...
November 25, 2016: Animal Reproduction Science
https://www.readbyqxmd.com/read/27896248/uterine-artery-pulsatility-index-in-hypertensive-pregnancies-when-does-the-index-normalize-in-the-puerperium
#2
Seung Mi Lee, Jong Kwan Jun, Su Jin Sung, Sung Il Choo, Jeong Yeon Cho, Hye Jin Yang, Chan-Wook Park, Joong Shin Park, Hee Chul Syn
OBJECTIVE: To investigate whether the uterine artery pulsatility index (UtA PI) of hypertensive pregnancies is higher than that of normal pregnancies in the puerperium, as well as in the antepartum period. METHODS: The UtA PI was measured in hypertensive (group 1) and normal pregnancies (group 2) during antepartum, immediate postpartum or late postpartum periods. Using the transvaginal approach, the bilateral uterine artery indices were measured. RESULTS: One hundred twenty-two women were enrolled: group 1, hypertensive disease in pregnancy (11 cases in antepartum, 13 cases in immediate postpartum and 10 cases in late postpartum period); group 2, normal pregnancies (32 cases in antepartum, 29 cases in immediate postpartum and 27 cases in late postpartum)...
November 2016: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/27872414/effect-of-low-dose-aspirin-on-midluteal-phase-uterine-artery-blood-flow-in-patients-with-recurrent-pregnancy-loss
#3
Xiaomin Kang, Tongfei Wang, Liyin He, Haijing Xu, Zhilan Liu, Aimin Zhao
OBJECTIVES: The purpose of this study was to evaluate differences in uterine artery blood flow parameters and pregnancy outcomes, if any. An investigation was conducted to determine the effects of low-dose aspirin on uterine artery blood flow indices in patients with recurrent pregnancy loss. METHODS: This observational study included 353 Chinese women with a history of recurrent pregnancy loss and 85 women without a history of recurrent pregnancy loss (control group) from Ren Ji Hospital...
December 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
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
#4
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/27858967/placental-pulsatility-index-a-new-more-sensitive-parameter-for-predicting-adverse-outcome-in-pregnancies-suspected-of-fetal-growth-restriction
#5
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/27854395/prediction-of-stillbirth-from-placental-growth-factor-at-19-24-weeks
#6
J E Aupont, R Akolekar, A Illian, S Neonakis, K H Nicolaides
OBJECTIVES: To investigate whether the addition of maternal serum placental growth factor (PlGF) measured at 19-24 weeks' gestation improves the performance of screening for stillbirth that is achieved by a combination of maternal factors, fetal biometry and uterine artery pulsatility index (UtA-PI) and to evaluate the performance of screening with this model for all stillbirths and those due to impaired placentation and unexplained or other causes. METHODS: This was a prospective screening study of 70 003 singleton pregnancies including 268 stillbirths, carried out in two phases...
November 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27854388/prediction-of-stillbirth-from-placental-growth-factor-at-11-13-weeks
#7
R Akolekar, M Machuca, M Mendes, V Paschos, K H Nicolaides
OBJECTIVES: To investigate whether the addition of maternal serum placental growth factor (PlGF) measured at 11-13 weeks' gestation improves the performance of screening for stillbirths that is achieved by a combination of maternal factors and first-trimester biomarkers such as maternal serum pregnancy-associated plasma protein-A (PAPP-A), fetal ductus venosus pulsatility index for veins (DV-PIV) and uterine artery pulsatility index (UtA-PI) and to evaluate the performance of screening with this model for all stillbirths and those due to impaired placentation and unexplained causes...
November 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27854387/prediction-of-stillbirth-from-maternal-factors-fetal-biometry-and-uterine-artery-doppler-at-19-24-weeks
#8
R Akolekar, M Tokunaka, N Ortega, A Syngelaki, K H Nicolaides
OBJECTIVES: To evaluate the performance of screening for all stillbirths and those due to impaired placentation and unexplained or other causes using a combination of maternal factors, fetal biometry and uterine artery pulsatility index (UtA-PI) at 19-24 weeks' gestation and to compare this performance with that of screening by UtA-PI alone. METHODS: This was a prospective screening study of 70 003 singleton pregnancies including 69 735 live births and 268 (0.38%) antepartum stillbirths; 159 (59%) were secondary to impaired placentation and 109 (41%) were due to other or unexplained causes...
November 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27807890/impact-of-aspirin-on-trophoblastic-invasion-in-women-with-abnormal-uterine-artery-doppler-at-11%C3%A2-%C3%A2-14-weeks-a-randomized-controlled-study-asap
#9
Elena Scazzocchio, Dani Oros, Daysi Diaz, Juan C Ramirez, Marta Ricart, Eva Meler, Rafael González de Agüero, Eduard Gratacos, Francesc Figueras
BACKGROUND: Defective trophoblastic invasion is a key feature in many of cases of preeclampsia. Uterine artery Doppler is a validated non-invasive surrogate of this trophoblastic invasion. OBJECTIVE: To explore whether low-dose aspirin administered from the first trimester improves trophoblastic invasion, evaluated by uterine Doppler, during the second and third trimesters in women defined as high-risk by abnormal uterine artery Doppler at first trimester. METHODS: This randomized Phase II study had a triple-blind, parallel-arm, controlled design...
November 3, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27734717/association-between-uterine-artery-doppler-blood-flow-changes-and-arterial-wall-elasticity-in-pregnant-women
#10
Emma von Wowern, Jakob Andersson, Ida Dalene Skarping, Maria T Howie, Per Olofsson
INTRODUCTION: Uterine artery (UtA) Doppler velocimetry changes and increased arterial stiffness are associated with preeclampsia. We aimed to investigate the relation between UtA velocimetry changes and arterial stiffness in pregnant women. METHODS: Doppler velocimetry and photoplethysmographic digital pulse wave analysis (DPA) were performed in 173 pregnant women in the second or third trimester, where UtA Doppler pulsatility index (PI), diastolic notching, and UtA score (UAS) combining notching and high PI were calculated...
October 13, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27729968/tadalafil-for-endometrial-growth-in-clomiphene-citrate-stimulated-cycles-in-an-iui-programma-a-pilot-study
#11
D H Mendez Lozano, M V Lenero, R L Gonzalez, J B Scheffer, M T Gonzalez, Y Barron, R Frydman
AIM OF THE STUDY: The objective of this study was to assess the impact of tadalafil on endometrial growth, the uterine artery pulsatility index (PI) and the uterine artery resistance index (RI) in patients under clomiphene ovarian stimulation for intrauterine insemination (IUI). METHODS: This randomized crossover study included 30 patients with a normal endometrium over 53 cycles, and 46 of those cycles in 23 patients were included in the analysis. In group A the patients were under 100 mg clomiphene daily for five days (2-6) and 5 mg tadalafil daily for 7 days (4-10)...
December 28, 2015: Facts, Views & Vision in ObGyn
https://www.readbyqxmd.com/read/27698752/serum-biomarkers-combined-with-uterine-artery-doppler-in-prediction-of-preeclampsia
#12
Lijie Li, Yanmei Zheng, Ying Zhu, Jianchun Li
First-trimester screening may be a major advantage over a second-trimester approach since it opens prospects for early and more efficient interventions. The aim of the current study was to evaluate whether the measurement of maternal serum inhibin A, activin A and placental growth factor (PlGF) at three to four months gestation with the second-trimester uterine artery pulsatility index (PI) are useful in predicting preeclampsia in a group of nulliparous women. All the patients also underwent uterine artery Doppler examination to measure the PI at 22-24 weeks gestation...
October 2016: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/27696933/high-flavanol-and-high-theobromine-versus-low-flavanol-and-low-theobromine-chocolate-to-improve-uterine-artery-pulsatility-index-a-double-blind-randomized-clinical-trial
#13
Emmanuel Bujold, Vicky Leblanc, Élise Lavoie-Lebel, Asma Babar, Mario Girard, Lionel Poungui, Claudine Blanchet, Isabelle Marc, Simone Lemieux, Abdous Belkacem, Elhadji Laouan Sidi, Sylvie Dodin
OBJECTIVE: To evaluate the impact of high-flavanol and high-theobromine (HFHT) chocolate in women at risk of preeclampsia (PE). STUDY DESIGN: We conducted a single-center randomized controlled trial including women with singleton pregnancy between 11 and 14 weeks gestation who had bilateral abnormal uterine artery (UtA) waveforms (notching) and elevated pulsatility index (PI). Participants were randomized to either HFHT or low-flavanol and low-theobromine (LFLT) chocolate (30 grams daily for a total of 12 weeks)...
October 3, 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
#14
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/27651633/ultrasonography-and-doppler-study-to-predict-uterine-receptivity-in-infertile-patients-undergoing-embryo-transfer
#15
Mohd Shoeb Khan, Aneesa Shaikh, Rekha Ratnani
PURPOSE: To detect whether ultrasonographic parameters and Doppler analysis of uterine blood flow can be of value in the prediction of endometrial receptivity in infertile female patients undergoing embryo transfer. METHODS: In this study, a total of 200 women with primary infertility undergoing embryo transfer were analyzed. Transvaginal ultrasonography was done on the 10th day of the menstrual cycle. To assess the uterine receptivity, we analyzed all the ultrasonographic and Doppler parameters...
October 2016: Journal of Obstetrics and Gynaecology of India
https://www.readbyqxmd.com/read/27651610/ligating-internal-iliac-artery-success-beyond-hesitation
#16
Abha Singh, Ruchi Kishore, Saveri Sarbhai Saxena
AIM: To study the outcomes, benefits and complications of internal iliac artery ligation in both obstetric and gynecological cases. OBJECTIVE: To study the outcomes, effectiveness and complications of internal iliac artery ligation (IIAL). METHOD: This is an analytical longitudinal study done among women who have undergone internal iliac artery ligation in Dr. BRAMH a tertiary referral center from July 2013 to June 2015. Follow-up was done through color Doppler analysis of pelvic arteries before discharge, after 6 weeks and after 6 months...
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
#17
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/27624545/circulating-free-soluble-fms-like-tyrosine-kinase-1-during-late-first-trimester-in-relation-with-placental-volume-as-a-surrogate-for-trophoblastic-production-a-physiology-study-in-low-risk-cohort
#18
Sudtawin Manthati, Busadee Pratumvinit, Ratchaneekorn Hanyongyuth, Suthipol Udompunthurak, Amprapha Phaophan, Tuangsit Wataganara
BACKGROUND: Data on first-trimester circulating soluble fms-like tyrosine kinase-1 (sFlt-1) and ischemic placental disease is limited and conflicting. This study aimed to study its physiology in relation to trophoblastic mass as the source of production. METHODS: Low-risk (representing normal placentation) women from 11 0/7 to 13 6/7 weeks' gestation were prospectively enrolled. Selective measurement of serum free sFlt-1 using a new automated assay from 100 eligible subjects was analyzed with gestational age, maternal weight, fetal crown-rump length (CRL), and mean uterine artery Doppler pulsatility index (PI)...
September 14, 2016: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/27601282/prediction-of-stillbirth-from-maternal-factors-fetal-biometry-and-uterine-artery-doppler-at-19-24-weeks-gestation
#19
Ranjit Akolekar, Mayumi Tokunaka, Nelson Ortega, Argyro Syngelaki, Kypros H Nicolaides
OBJECTIVES: To evaluate the performance of screening for all stillbirths and those due to impaired placentation and unexplained or other causes by a combination of maternal factors, fetal biometry and uterine artery pulsatility index (UT-PI) at 19-24 weeks' gestation and compare this performance to that of screening by UT-PI alone. METHODS: This was a prospective screening study of 70,003 singleton pregnancies including 69,735 live births and 268 (0.38%) antepartum stillbirths; 159 (59%) were secondary to impaired placentation and 109 (41%) were due to other or unexplained causes...
September 7, 2016: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/27599094/prediction-of-pre-eclampsia-combining-ngal-and-other-biochemical-markers-with-doppler-in-the-first-and-or-second-trimester-of-pregnancy-a-pilot-study
#20
Grigorios A Karampas, Makarios I Eleftheriades, Konstantinos C Panoulis, Myrto D Rizou, Alexander D Haliassos, Dimitra K Metallinou, George P Mastorakos, Demetrios A Rizos
OBJECTIVE: To determine the performance of maternal characteristics, Doppler and a set of biochemical markers for pre-eclampsia (PE) screening at 11+0 to 13+6 and 20+1 to 25+6 weeks' gestation. STUDY DESIGN: Prospectively enrolled women at 11+0 to 13+6 and 20+1 to 25+6 weeks. Maternal characteristics, uterine artery pulsatility index (UtA-PI), ductus venosus pulsatility index (DV-PI) and serum biomarkers including pregnancy associated plasma protein - A (PAPP-A), placental growth factor (PlGF), soluble fms-like tyrosine kinase 1 (sFlt-1), s-Flt-1/PLGF ratio, asymmetric dimethylarginine (ADMA), matrix metalloproteinase 9 (MMP-9), neutrophil gelatinase-associated lipocalin (NGAL) and MMP-9/NGAL complex were recorded...
October 2016: European Journal of Obstetrics, Gynecology, and Reproductive Biology
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