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Obstetric ultrasound

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https://www.readbyqxmd.com/read/28634788/consistent-reconstruction-of-4d-fetal-heart-ultrasound-images-to-cope-with-fetal-motion
#1
Christine Tanner, Barbara Flach, Céline Eggenberger, Oliver Mattausch, Michael Bajka, Orcun Goksel
PURPOSE: 4D ultrasound imaging of the fetal heart relies on reconstructions from B-mode images. In the presence of fetal motion, current approaches suffer from artifacts, which are unrecoverable for single sweeps. METHODS: We propose to use many sweeps and exploit the resulting redundancy to automatically recover from motion by reconstructing a 4D image which is consistent in phase, space, and time. An interactive visualization framework to view animated ultrasound slices from 4D reconstructions on arbitrary planes was developed using a magnetically tracked mock probe...
June 20, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28634754/value-of-endometrial-thickness-assessed-by-transvaginal-ultrasound-for-the-prediction-of-endometrial-cancer-in-patients-with-postmenopausal-bleeding
#2
Amelie Schramm, Florian Ebner, Emanuel Bauer, Wolfgang Janni, Ulrike Friebe-Hoffmann, Miriam Pellegrino, Nikolaus De Gregorio, Thomas W P Friedl
PURPOSE: Histological confirmation of endometrial cancer by dilatation/curettage (D/C) in women with postmenopausal bleeding (PMB) can be challenging due to anesthesiological and/or surgical risks. Thus, less invasive methods for diagnostics are required to identify patients with minimal risk for endometrial cancer (EC) to avoid unnecessary surgical intervention. The objective of this single-center cohort study was to assess the diagnostic validity of transvaginal ultrasound (TVUS) measurements of endometrial thickness (ET) in patients with PMB for the detection of EC...
June 20, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28633726/small-bowel-intussusception-in-a-pregnant-woman-a-case-report
#3
Roxana Covali, Lucian Ambrosie, Micea Onofriescu, Alexandru Luca, Gabriela Dumachita-Sargu, Violeta Aursulesei, Dumitru Gafitanu
INTRODUCTION: Intussusception usually is associated with children, rarely with adults. CASE PRESENTATION: A 42-year-old pregnant woman (29 weeks' gestation) reported mild pain in the upper aspect of the abdomen after an intense physical effort. Ultrasound examination found a normally evolving pregnancy and a bowel obstacle, without bowel distention. Because it was not a surgical emergency at the time of evaluation, she was sent to the hospital's Obstetrics Department...
2017: Permanente Journal
https://www.readbyqxmd.com/read/28632498/can-early-ultrasonography-explain-the-lower-miscarriage-rates-in-twin-as-compared-to-singleton-pregnancies-following-assisted-reproduction
#4
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/28631075/measurement-and-evaluation-of-fetal-fat-layer-in-the-prediction-of-fetal-macrosomia-in-pregnancies-complicated-by-gestational-diabetes
#5
Mohamed Elessawy, Christina Harders, Helmut Kleinwechter, Norbert Demandt, Ghada Abu Sheasha, Nicolai Maass, Ulrich Pecks, Christel Eckmann-Scholz
OBJECTIVES: To explore the predictive power of measuring the abdominal fetal fat layer (FFL) as a soft tissue marker at 31, 34, and 37 weeks' gestation to improve the detection of fetal macrosomia in pregnant women with GDM, in addition to the biometric values with close monitoring of maternal blood sugar level and BMI changes. METHODS: We conducted a prospective observational study at the Department of Obstetrics, University Hospitals, Campus Kiel, Germany, in collaboration with diabetic clinic staff...
June 19, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28629247/obstetric-practice-patterns-in-pregnancies-complicated-by-fetal-trisomy-13-or-18
#6
Sarah K Dotters-Katz, Marcela C Smid, Cora Mcelwain, Jeffrey A Kuller, Jay Schulkin
PURPOSE: Describe practice patterns among obstetrician/gynecologists (OB/GYNs) when caring for women with pregnancy complicated by fetal trisomy 13(T13) or 18(T18), and compare these between maternal-fetal-medicine (MFM) and non-MFM providers. MATERIALS AND METHODS: We conducted an electronic survey using the American College of Obstetricians and Gynecologists database. Using simple statistics, we describe demographics and practice patterns among respondents, and compare those of MFM practitioners with non-MFM providers...
June 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28625308/the-role-of-ultrasonography-in-obstetric-anesthesia
#7
REVIEW
Allison Lee, John P R Loughrey
Ultrasonography is increasingly being viewed as an everyday tool in obstetric anesthesia. For the administration of spinal or epidural anesthesia, it reduces needle redirection attempts in patients with difficult anatomy. In the less frequent scenario of a collapsed patient, it helps with assessment in the form of transthoracic echocardiography. Abdominal blocks require ultrasound guidance for safe and anatomically correct placement. Accurate assessment of gastric volume status with ultrasound would be a useful everyday skill if it is adopted into mainstream practice...
March 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/28625300/preeclampsia-in-2017-obstetric-and-anaesthesia-management
#8
REVIEW
Ross Hofmeyr, Mushi Matjila, Robert Dyer
In many centres, anaesthesia now incorporates perioperative medicine. Preeclampsia is a perioperative medical challenge requiring a multi-disciplinary team. New definitions stress the rapid progression of the disease and highlight the importance of early detection. Anaesthesiologists should understand the pathophysiology of the disease and develop the ultrasound skills required to assist in the assessment of disease severity. This facilitates the choice of anaesthesia method and perioperative management in complicated cases...
March 2017: Best Practice & Research. Clinical Anaesthesiology
https://www.readbyqxmd.com/read/28619771/revealed-versus-concealed-criteria-for-placental-insufficiency-in-an-unselected-obstetric-population-in-late-pregnancy-ratio37-randomised-controlled-trial-study-protocol
#9
Francesc Figueras, Eduard Gratacos, Marta Rial, Ilan Gull, Ladislav Krofta, Marek Lubusky, Cruz-Martinez Rogelio, Cruz-Lemini Mónica, Martinez-Rodriguez Miguel, Pamela Socias, Cristina Aleuanlli, Mauro C Parra Cordero
INTRODUCTION: Fetal growth restriction (FGR) affects 5%-10% of all pregnancies, contributing to 30%-50% of stillbirths. Unfortunately, growth restriction often is not detected antenatally. The last weeks of pregnancy are critical for preventing stillbirth among babies with FGR because there is a pronounced increase in stillbirths among growth-restricted fetuses after 37 weeks of pregnancy. Here we present a protocol (V.1, 23 May 2016) for the RATIO37 trial, which evaluates an integrated strategy for accurately selecting at-risk fetuses for delivery at term...
June 15, 2017: BMJ Open
https://www.readbyqxmd.com/read/28617718/self-monitoring-of-blood-pressure-during-pregnancy-an-observational-study-in-the-obstetrical-waiting-room
#10
Frederikke F Lihme, Mette E Madsen, Jacob A Lykke
OBJECTIVE: The aim of this study was to assess the feasibility of self-monitoring of blood pressure with a semiautomatic device in pregnant women. PARTICIPANTS AND METHODS: Women attending routine obstetrical ultrasound scanning were invited to participate. The hospital staff initially demonstrated and instructed each participant in correct measurement and then took three measurements on both arms. The participant then repeated the measurements and filled an evaluation questionnaire...
June 14, 2017: Blood Pressure Monitoring
https://www.readbyqxmd.com/read/28617151/lithium-exposure-during-pregnancy-outcomes-for-women-who-attended-a-specialist-antenatal-clinic
#11
Jacqueline Frayne, Thinh Nguyen, Tabitha Mok, Yvonne Hauck, Helena Liira
INTRODUCTION: Lithium treatment in pregnancy represents a significant dilemma for women and treating health professionals alike. The complexity of risk-benefit analysis is impacted by limited information. METHODS: A cohort study of 33 women with severe mental illness, who were prescribed lithium at any time during the pregnancy, and gave birth between December 2007 and January 2015 at a specialist antenatal clinic in Western Australia. A descriptive comparison for women who continued lithium throughout pregnancy, and those who ceased on discovery of pregnancy was undertaken examining demographic, obstetric, neonatal and psychiatric variables...
June 15, 2017: Journal of Psychosomatic Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28614211/mixed-gonadal-germ-cell-tumor-composed-of-a-spermatocytic-tumor-like-component-and-germinoma-arising-in-gonadoblastoma-in-a-phenotypic-woman-with-a-46-xx-peripheral-karyotype-report-of-the-first-case
#12
Alejandro A Gru, Eli S Williams, Dengfeng Cao
We report a unique case of gonadal mixed germ cell tumor (GCT) composed of a predominantly spermatocytic tumor (ST)-like component and a minor component of germinoma arising in gonadoblastoma in a phenotypic woman with a 46, XX peripheral karotype. The patient was a 24-year-old woman (gravida 2, para 1) found to have a 7 cm pelvic mass during routine obstetric ultrasound examination at 20 weeks gestational age. She underwent a left salpingo-gonadectomy at gestational age 23 and 2/7 weeks. She recovered well and delivered a healthy baby at full term...
June 13, 2017: American Journal of Surgical Pathology
https://www.readbyqxmd.com/read/28613398/fetal-and-umbilical-doppler-ultrasound-in-high-risk-pregnancies
#13
REVIEW
Zarko Alfirevic, Tamara Stampalija, Therese Dowswell
BACKGROUND: Abnormal blood flow patterns in fetal circulation detected by Doppler ultrasound may indicate poor fetal prognosis. It is also possible that false positive Doppler ultrasound findings could lead to adverse outcomes from unnecessary interventions, including preterm delivery. OBJECTIVES: The objective of this review was to assess the effects of Doppler ultrasound used to assess fetal well-being in high-risk pregnancies on obstetric care and fetal outcomes...
June 13, 2017: Cochrane Database of Systematic Reviews
https://www.readbyqxmd.com/read/28612638/should-isolated-fetal-ventriculomegaly-measured-below-12%C3%A2-mm-be-viewed-as-a-variant-of-the-norm-results-of-a-5-year-experience-in-a-prenatal-referral-center
#14
Anaïs Lavongtheung, Guillaume Jedraszak, Philippe Naepels, Pierre Tourneux, Catherine Gondry-Jouet, Anne-Gaëlle L E Moing, Jean Gondry, Julien Chevreau
BACKGROUND: Fetal ventriculomegaly (VM) is defined as lateral ventricles measured above 10 mm. Some authors believe VM < 12 mm are variants of the norm and needn't be addressed for referral ultrasound. METHODS: A retrospective continuous cohort study of 127 confirmed fetal VM was divided in 3 groups after initial referral sonographic assessment: isolated VM < 12 mm (group A), isolated VM ≥ 12 mm (group B), and VM associated with other malformations (group C)...
June 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28607343/failed-epidural-for-labour-what-now
#15
Emilia Guasch, Fabrizio Iannuccelli, Nicolas Brogly, Fernando Gilsanz
Labour epidural failure is a challenging situation for the obstetric anaesthetist, especially when associated to high risk of caesarean delivery, obesity, and difficult airway predictors. Labour epidural failure is still not standardly defined, consequently its incidence is uncertain: improving the knowledge of risk factors related to failure will increase epidural block success rate. Prolonged labours, previous history of epidural failure, and repeated topups needed during labour are recognized risk factors for failure...
June 12, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28600890/pilot-study-of-a-software-supported-protocol-for-second-trimester-ultrasound-screening
#16
Thierry Bultez, Jean-Pierre Bernard, Ulrike Metzger, Yves Ville, Laurent Julien Salomon
OBJECTIVES: To evaluate the feasibility and impact of using a software-supported protocol for routine second-trimester ultrasound scanning. METHODS: We conducted a comparative observational study of 2 sets of 25 randomly selected normal routine second-trimester examinations performed by the same expert sonographer before and 1 year after the introduction of a software-supported protocol. The scanning protocol was identical during both periods and conformed to International Society of Ultrasound in Obstetrics and Gynecology guidelines...
June 10, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28599899/the-placenta-accreta-spectrum-pathophysiology-and-evidence-based-anatomy-for-prenatal-ultrasound-imaging
#17
REVIEW
Eric Jauniaux, Sally Collins, Graham J Burton
The placenta accreta spectrum (PAS) is a complex obstetric complication associated with a high maternal morbidity. It is a relatively new disorder of placentation, and is the consequence of damage to the endometrium-myometrial interface of the uterine wall. When first described 80 years ago, it mainly occurred after manual removal of the placenta, uterine curettage or endometritis. Superficial damage leads primarily to an abnormally adherent placenta, and is diagnosed as the complete or partial absence of the decidua on histology...
June 6, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28596999/opportunities-and-challenges-in-realizing-universal-access-to-obstetric-ultrasound-in-sub-saharan-africa
#18
REVIEW
Sikolia Z Wanyonyi, Charles Muriuki Mariara, Sudhir Vinayak, William Stones
The potential benefits of obstetric ultrasound have yet to be fully realized in sub-Saharan Africa (SSA), despite the region bearing the greatest burden of poor perinatal outcomes. We reviewed the literature for challenges and opportunities of universal access to obstetric ultrasound and explored what is needed to make such access an integral component of maternity care in order to address the massive burden of perinatal morbidity and mortality in SSA. Original peer-reviewed literature was searched in various electronic databases using a 'realist' approach...
April 2017: Ultrasound International Open
https://www.readbyqxmd.com/read/28593776/-ultrasound-staging-of-stage-i-ii-endometrial-cancer-analysis-of-own-file-in-the-years-2012-2016
#19
O Míka, J Kožnarová, P Sak
OBJECTIVE: The aim of the presented study was to evaluate the accuracy of ultrasound staging of early stage endometrial cancer depending on grading, evaluation of ultrasound examination accuracy growing overtime with gained experience of examiners and comparison of subjective versus objective modalities of deep myometrial invasion assessment in the file of patients who were referred in The Oncogyneacologic Center, Department of Gyneacology and Obstetrics in České Budějovice. DESIGN: Retrospective study...
2017: Ceská Gynekologie
https://www.readbyqxmd.com/read/28586506/second-trimester-uterine-model-for-teaching-ultrasound-guided-obstetric-procedures
#20
Susan E Dalton, Anthony R Gregg, Monique Ho
The declining number of ultrasound-guided obstetric procedures in clinical practice mandates a shift toward simulation-based teaching. Current uterine simulation aids are animal tissue-sourced or expensive, and improvement is needed. We describe a low-cost reusable uterine model with "fetus," cord and skin, constructed from synthetic gel and silicone rubber. Ultrasound appearance and tactile feedback approximate clinical use, and all parts of the model are portable, durable, and shelf-stable. Those made of ballistics gel can be recycled numerous times without noticeable effect...
June 6, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
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