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Uterine doppler

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https://www.readbyqxmd.com/read/28335685/preterm-delivery-as-a-unique-pathophysiologic-state-characterized-by-maternal-soluble-fms-like-tyrosine-kinase-1-and-uterine-artery-resistance-during-pregnancy
#1
Jennifer K Straughen, Dawn P Misra, Laura Helmkamp, Vinod K Misra
BACKGROUND: Preterm delivery (PTD) may be characterized by altered interrelationships among angiogenic factors and measures of placental function. We analyzed the longitudinal relationship between maternal serum concentrations of soluble fms-like tyrosine kinase 1 (sFlt1), an important antiangiogenic factor, and uterine artery resistance in pregnancies resulting in preterm and term deliveries. METHODS: Data were collected in a longitudinal cohort study involving 278 women monitored at 6 to 10, 10 to 14, 16 to 20, 22 to 26, and 32 to 36 weeks of gestation...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28328938/tissue-factor-pathway-inhibitor-for-prediction-of-placenta-mediated-adverse-pregnancy-outcomes-in-high-risk-women-angiopred-study
#2
Aurélie Di Bartolomeo, Céline Chauleur, Jean-Christophe Gris, Céline Chapelle, Edouard Noblot, Silvy Laporte, Tiphaine Raia-Barjat
OBJECTIVE: The study aimed to evaluate if the rate of tissue factor pathway inhibitor during pregnancy and following delivery could be a predictive factor for placenta-mediated adverse pregnancy outcomes in high-risk women. METHODS: This was a prospective multicentre cohort study of 200 patients at a high risk of occurrence or recurrence of placenta-mediated adverse pregnancy outcomes conducted between June 2008 and October 2010. Measurements of tissue factor pathway inhibitor resistance (normalized ratio) and tissue factor pathway inhibitor activity were performed for the last 72 patients at 20, 24, 28, 32, and 36 weeks of gestation and during the postpartum period...
2017: PloS One
https://www.readbyqxmd.com/read/28301988/the-influence-of-lipid-and-proinflammatory-status-on-maternal-uterine-blood-flow-in-women-with-late-onset-gestational-diabetes
#3
Fernando Bugatto, Rocío Quintero-Prado, Francisco M Visiedo, José M Vilar-Sánchez, Alejandro Figueroa-Quiñones, Cristina López-Tinoco, Rafael Torrejón, José L Bartha
BACKGROUND: Gestational diabetes mellitus (GDM) is associated with increased proinflammatory cytokines and is also associated with adverse cardiovascular disease (CVD) outcomes later in life. We aim to evaluate the relationships between uterine arteries vascularization and endothelial dysfunction markers, proinflammatory cytokines, and glycemic and lipid profile in women with GDM. METHODS: Fifty pregnant women were recruited at the third trimester of pregnancy for a prospective cohort study...
January 1, 2017: Reproductive Sciences
https://www.readbyqxmd.com/read/28299220/spontaneous-regression-of-uterine-arteriovenous-malformations-with-conservative-management
#4
Keiko Mekaru, Sugiko Oishi, Kozue Akamine, Chiaki Heshiki, Yoichi Aoki
Uterine arteriovenous malformation (AVM) can cause massive hemorrhage and is often treated with uterine artery embolization (UAE), which may lead to ovarian insufficiency. Thus, avoiding UAE should be considered, particularly in women undergoing fertility treatments. We present three women diagnosed with postmiscarriage AVM on color Doppler by transvaginal ultrasound imaging. They had no genital bleeding and a small mass, measuring 16-22 mm. If estradiol was >300 pg/mL when AVM was diagnosed, then a gonadotropin-releasing hormone agonist was administered...
2017: Case Reports in Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28296829/ovarian-torsion-in-the-normal-ovary-a-diagnostic-challenge-in-postmenarchal-adolescent-girls-in-the-emergency-department
#5
Erbil Karaman, Burhan Beger, Orkun Çetin, Mehmet Melek, Yasemin Karaman
BACKGROUND Ovarian torsion can be seen in the otherwise-normal ovary and is a challenging issue in the emergency department. The aims were (1) to evaluate and compare the surgically verified ovarian torsion cases in otherwise-normal ovaries and ovaries including a mass or cyst and (2) to investigate whether the normal-appearing ovaries on ultrasound examination affected the diagnosis of ovarian torsion or not. MATERIAL AND METHODS A retrospective cohort study design was used. The medical records of all postmenarchal adolescent girls with surgically verified ovarian torsion treated in a university hospital from 2010 to 2016 were reviewed...
March 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28295303/separation-and-characterization-of-maternal-cardiac-and-vascular-sounds-in-the-third-trimester-of-pregnancy
#6
Diana Riknagel, Henrik Zimmermann, Richard Farlie, Dorte Hammershøi, Samuel E Schmidt, Morten Hedegaard, Peter Humaidan, Johannes J Struijk
OBJECTIVE: To characterize the vascular sounds of the uteroplacental blood flow obtained by microphones. METHODS: The present retrospective study took place in an anechoic chamber facility at Aalborg University, Aalborg, Denmark, in 2012, and included pregnant participants aged 18-40 years with a singleton pregnancy at 32-36 weeks and a parity of 0-2. Abdominal Doppler ultrasonography was performed bilaterally on the uterine arteries. Subsequently, in the same positions, sound recordings were performed with microphones...
March 13, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28277907/the-effect-of-maternal-hyperoxygenation-on-fetal-circulatory-system-in-normal-growth-and-iugr-fetuses-what-we-can-learn-from-this-impact
#7
Nizar Khatib, Israel Thaler, Ron Beloosesky, Hanin Dabaja, Nadir Ganem, Philippe Abecassis, Yuval Ginsberg, Zeev Weiner
PURPOSE: The study aims were to assess and compare the effects of maternal hyperoxygenation on fetal circulation, in fetuses with intra-uterine growth retardation and normal fetal growth. METHODS: Twelve singleton pregnant women with normal fetal growth and twelve singleton pregnant women with intrauterine growth restriction were recruited. Mean gestational age of 35.2±3.5 and 34.7±3.9 weeks respectively. Doppler blood flow velocity waveforms were obtained from the middle cerebral artery, umbilical, main and proximal right pulmonary arteries...
March 3, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28273332/comparison-between-model-predicted-tumor-oxygenation-dynamics-and-vascular-flow-related-doppler-indices
#8
Antonella Belfatto, Ailyn M Vidal Urbinati, Delia Ciardo, Dorella Franchi, Federica Cattani, Roberta Lazzari, Barbara A Jereczek-Fossa, Roberto Orecchia, Guido Baroni, Pietro Cerveri
PURPOSE: Mathematical modeling is a powerful and flexible method to investigate complex phenomena. It discloses the possibility of reproducing expensive as well as invasive experiments in a safe environment with limited costs. This makes it suitable to mimic tumor evolution and response to radiotherapy although the reliability of the results remains an issue. Complexity reduction is therefore a critical aspect in order to be able to compare model outcomes to clinical data. Among the factors affecting treatment efficacy, tumor oxygenation is known to play a key role in radiotherapy response...
March 8, 2017: Medical Physics
https://www.readbyqxmd.com/read/28268103/cesarean-scar-pregnancy-a-systematic-review
#9
REVIEW
Natalia Gonzalez, Togas Tulandi
A relatively new type of ectopic pregnancy is cesarean scar pregnancy (CSP). This is related to the increasing number of cesarean deliveries and to the advances in imaging. There are 2 types of CSP; CSP with progression to cervicoisthmic space or uterine cavity (type I, endogenic type) or with deep invasion of scar defect with progression towards bladder and abdominal cavity (type II, exogenic type). The endogenic type of CSP could result in a viable pregnancy; yet with a high risk of bleeding at the placental site...
March 4, 2017: Journal of Minimally Invasive Gynecology
https://www.readbyqxmd.com/read/28264611/prevalence-and-diagnostic-accuracy-of-doppler-ultrasound-of-placenta-accreta-in-egypt
#10
Ahmed M Maged, Emad Salah, Hany Saad, Hadeer Meshaal, Ashraf Eldaly, Maha A Katta, Wesam S Deeb
OBJECTIVE: To assess the prevalence of placenta accreta among those with placenta implanted over CS scar and to evaluate the accuracy of Doppler ultrasound in diagnosis. METHODS: A cross sectional study included 100 patients with placenta previa anterior with at least one previous CS. Ultrasound and color Doppler was done to all participants and correlated with operative findings. RESULTS: There was a significant difference between accrete and non accrete group regarding maternal age (32...
March 6, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28217667/the-efficacy-of-pre-delivery-prophylactic-trans-catheter-arterial-balloon-occlusion-of-bilateral-internal-iliac-artery-in-patients-with-suspected-placental-adhesion
#11
Yoon Jin Cho, Yong Taek Oh, Suk Young Kim, Ju Young Kim, Sun Young Jung, Seung Joo Chon, Jeong Ho Kim, Sung Su Byun
OBJECTIVE: Prophylactic trans-catheter arterial balloon occlusion (PTABO) before cesarean section of placenta previa totalis has been introduced to prevent massive hemorrhage. The purpose of this study is to evaluate the clinical usefulness of PTABO in cases of suspected placental adhesion and to examine antepartal risk factors and perinatal outcomes in women with placental adhesion. METHODS: Between January 2012 and December 2015, 77 patients who had undergone ultrasonography for evaluation of placenta previa were enrolled in this study...
January 2017: Obstetrics & Gynecology Science
https://www.readbyqxmd.com/read/28215686/transrectal-doppler-sonography-of-uterine-blood-flow-in-ewes-during-pregnancy
#12
Renato Travassos Beltrame, Carolina Covre, Lucas Buss Littig, Amanda de Barros Martins, Celia Raquel Quirino, Aylton Bartholazzi Junior, Ricardo Lopes Dias da Costa
In sheep, there is a lack of information on the behaviour of hemodynamic indices and parameters of blood flow velocity of the uterine artery during pregnancy, making it impossible to determine the real meaning of the values found and their probable relevance in normal physiological or pathological states. The objective of the present study was to evaluate the blood flow velocity parameters and hemodynamic indices of the uterine artery in ewes (18) during pregnancy (33). Based on non-invasive colour Doppler sonography, we evaluated the peak systolic velocity (PS), end diastolic velocity (ED), time-averaged maximum and minimum velocity in a cardiac cycle (TAMAX and TAMEAN), pulsatility index (PI), resistance index (RI), systolic/diastolic ratio (S/D), heart rate (HR), arterial diameter (AD) and the blood flow volume (BFV)...
March 15, 2017: Theriogenology
https://www.readbyqxmd.com/read/28211610/fibroid-vascularisation-assessed-with-three-dimensional-power-doppler-ultrasound-is-a-predictor-for-uterine-fibroid-growth-a-prospective-cohort-study
#13
L L Nieuwenhuis, A L Keizer, B Stoelinga, J W R Twisk, W J K Hehenkamp, H A M Brölmann, J A F Huirne
OBJECTIVE: To analyse fibroid vascularisation measured with 3D Power Doppler in relation to absolute fibroid volume change during 12 months follow up and in relation to fibroid growth rate per year DESIGN: A prospective cohort study was performed between March 2012 and March 2014. SETTING: Outpatient clinic of the VU medical centre, Amsterdam. POPULATION OR SAMPLE: All premenopausal women diagnosed with a maximum of 2 fibroids with expectative management were consecutively included...
February 17, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28186956/uterine-artery-doppler-pulsatility-index-at-11-38-weeks-in-icsi-pregnancies-with-egg-donation
#14
Annalisa Inversetti, Luca Mandia, Massimo Candiani, Irene Cetin, Alessandro Larcher, Valeria Savasi, Enrico Papaleo, Paolo Cavoretto
BACKGROUND: Uterine artery Doppler pulsatility index (UtA-PI) may be different in pregnancies with egg donation (ICSI-ED) as compared to conceptions with autologous intra-cytoplasmatic sperm injection (autologous ICSI) and to spontaneous conceptions (SC). METHODS: One hundred and ninety-four pregnant women with different modes of conception (MC) were prospectively evaluated: 53 ICSI-ED, 36 autologous ICSI and 105 SC. To evaluate the effects of different MC on PI, multivariable linear regression (MLR) models predicting UtA-PI were fitted after adjustment for maternal age, body mass index, race, parity, smoking status and gestational age...
February 10, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28161381/cystoscopic-evaluation-of-bladder-leiomyoma
#15
Samuel L Washington, Arash Eslami, David T Tzou
We report the case of a 40-year-old woman with a history of uterine polyps and 3 months worth of gross hematuria who was found to have a bladder mass on cystoscopy. While this mass appeared benign visually, it demonstrated enhancement on axial imaging with increased internal vascularity on Doppler ultrasound. A transurethral resection demonstrated bladder leiomyoma. This case increases the urologist's recognition of a well-described but previously under-represented condition by showcasing its visual appearance on cystoscopy...
February 1, 2017: Urology
https://www.readbyqxmd.com/read/28160605/increased-ipsilateral-uterine-artery-vascular-resistance-in-women-with-ovarian-endometrioma
#16
Miyoko Waratani, Taisuke Mori, Fumitake Ito, Yukiko Tanaka, Akemi Koshiba, Akiko Takahata, Jo Kitawaki
AIM: The aim of this study was to elucidate whether the presence of an ovarian endometrioma is associated with impaired vascular flow. We investigated changes in vascular flow on the ipsilateral and contralateral side of the endometrioma, before and after surgery. METHODS: This prospective case-control study included 144 women (ovarian endometrioma [n = 40], endometriosis without ovarian endometrioma [n = 33], non-endometriotic ovarian cyst [n = 17], and normal pelvis [n = 54])...
February 3, 2017: Journal of Obstetrics and Gynaecology Research
https://www.readbyqxmd.com/read/28153658/first-trimester-alcohol-exposure-alters-placental-perfusion-and-fetal-oxygen-availability-affecting-fetal-growth-and-development-in-a-non-human-primate-model
#17
Jamie O Lo, Matthias C Schabel, Victoria H J Roberts, Xiaojie Wang, Katherine S Lewandowski, Kathleen A Grant, Antonio E Frias, Christopher D Kroenke
BACKGROUND: Prenatal alcohol exposure leads to impaired fetal growth, brain development, and stillbirth. Placental impairment likely contributes to these adverse outcomes, but the mechanisms and specific vasoactive effects of alcohol that links altered placental function to impaired fetal development remain areas of active research. OBJECTIVE: Recently, we developed magnetic resonance imaging techniques in nonhuman primates to characterize placental blood oxygenation through measurements of T2* and perfusion using dynamic contrast-enhanced magnetic resonance imaging...
March 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28130433/the-association-of-maternal-thyroid-function-with-placental-hemodynamics
#18
M Barjaktarovic, T I M Korevaar, L Chaker, V W V Jaddoe, Y B de Rijke, T J Visser, E A P Steegers, R P Peeters
STUDY QUESTION: What is the clinical association of maternal thyroid function with placental hemodynamic function? SUMMARY ANSWER: A higher free thyroxine (FT4) concentration in early pregnancy is associated with higher placental vascular resistance. WHAT IS KNOWN ALREADY: Suboptimal placental function is associated with preeclampsia (which, in turn, further deteriorates placental hemodynamics and impairs the fetal blood supply), fetal growth restriction and premature delivery...
January 26, 2017: Human Reproduction
https://www.readbyqxmd.com/read/28114884/everrest-prospective-study-a-6-year-prospective-study-to-define-the-clinical-and-biological-characteristics-of-pregnancies-affected-by-severe-early-onset-fetal-growth-restriction
#19
Rebecca Spencer, Gareth Ambler, Jana Brodszki, Anke Diemert, Francesc Figueras, Eduard Gratacós, Stefan R Hansson, Kurt Hecher, Angela Huertas-Ceballos, Neil Marlow, Karel Marsál, Eva Morsing, Donald Peebles, Carlo Rossi, Neil J Sebire, John F Timms, Anna L David
BACKGROUND: Fetal growth restriction (FGR) is a serious obstetric condition for which there is currently no treatment. The EVERREST Prospective Study has been designed to characterise the natural history of pregnancies affected by severe early onset FGR and establish a well phenotyped bio-bank. The findings will provide up-to-date information for clinicians and patients and inform the design and conduct of the EVERREST Clinical Trial: a phase I/IIa trial to assess the safety and efficacy of maternal vascular endothelial growth factor (VEGF) gene therapy in severe early onset FGR...
January 23, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28106643/imaging-and-the-infertility-evaluation
#20
Roohi Jeelani, Elizabeth E Puscheck
Ultrasound (US) has transformed the fertility evaluation. With 1 consultation, blood work and 1 to 2 USs, the female fertility status can be fully evaluated. The initial US is best done early in the follicular cycle to evaluate the pelvic anatomy and ovarian reserve. A three-dimensional US is important to evaluate for uterine anomalies and color Doppler for any masses. A mid-cycle saline infusion sonohysterogram assesses the endometrial cavity better than a hysterosalpingogram as it identifies the cause of any filling defects...
March 2017: Clinical Obstetrics and Gynecology
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