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Ultrasound in labor

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https://www.readbyqxmd.com/read/28514880/the-uterocervical-angle-and-its-relationship-with-preterm-birth
#1
Alba Farràs Llobet, Laia Regincós Martí, Teresa Higueras, Inés Zulema Calero Fernández, Andrea Gascón Portalés, María M Goya Canino, Elena Carreras Moratonas
OBJECTIVES: To determine whether the uterocervical angle (UCA) correlates with the risk of spontaneous preterm birth (sPTB) <34 weeks and assess its interobserver variability. STUDY DESIGN: Case-control study of 275 women including 34 who started labor spontaneously and gave birth before 34 weeks of gestation (preterm group) and 241 who gave birth at term (control group). Images used to report cervical length were re-measured for UCA. RESULTS: Mean UCA in the second trimester was wider in the preterm group (105...
May 17, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28504988/the-labor-analgesia-requirements-in-nulliparous-women-randomized-to-epidural-catheter-placement-in-a-high-or-low-intervertebral-space
#2
Albert Moore, Valerie Villeneuve, Bruno Bravim, Aly El-Bahrawy, Eva El-Mouallem, Ian Kaufman, Roupen Hatzakorzian, William Li Pi Shan
BACKGROUND: We hypothesized that an epidural catheter placed in a lower vertebral interspace will require less medication for labor analgesia. METHODS: Nulliparous women requesting neuraxial labor analgesia were randomized to epidural catheter placement at the ultrasound-confirmed L1-2 or L4-5 interspace. Patient-controlled epidural analgesia and breakthrough manual epidural boluses of 10 mL of 0.125% bupivacaine with 50 µg of fentanyl or 8 mL of 2% lidocaine were utilized...
May 11, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28498625/biomechanics-of-the-human-uterus
#3
REVIEW
Kristin M Myers, David Elad
The appropriate biomechanical function of the uterus is required for the execution of human reproduction. These functions range from aiding the transport of the embryo to the implantation site, to remodeling its tissue walls to host the placenta, to protecting the fetus during gestation, to contracting forcefully for a safe parturition and postpartum, to remodeling back to its nonpregnant condition to renew the cycle of menstruation. To serve these remarkably diverse functions, the uterus is optimally geared with evolving and contractile muscle and tissue layers that are cued by chemical, hormonal, electrical, and mechanical signals...
May 12, 2017: Wiley Interdisciplinary Reviews. Systems Biology and Medicine
https://www.readbyqxmd.com/read/28480677/what-do-obstetricians-really-think-about-ultrasound-in-the-delivery-room
#4
Yinon Gilboa, Sharon Perlman, Hila Karp, Ron Rabinovitch, Reuven Achiron
BACKGROUND: In recent years, the role of intrapartum sonography has expanded in childbirth management, in subjective clinical situations such as arrested deliveries, or prior to instrumental deliveries. OBJECTIVES: To assess the current use of intrapartum ultrasound by obstetricians in Israel. METHODS: An anonymous questionnaire was completed by 79 obstetricians in second- and third level- hospitals in Israel. The results were analyzed according to main subspecialty (sonography, delivery), experience and gender...
April 2017: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/28452086/the-effects-of-nifedipine-and-atosiban-on-perinatal-brain-injury-a-secondary-analysis-of-the-apostel-iii-trial
#5
T A J Nijman, M M Goedhart, C N Naaktgeboren, T R de Haan, D C Vijlbrief, B W Mol, M J N Benders, A Franx, M A Oudijk
OBJECTIVE: Brain injury in prematurely born neonates is strongly associated with poor neurodevelopmental outcome. The aim of our study is to evaluate if nifedipine reduces overall brain injury compared to atosiban in women with threatened preterm birth. METHODS: We performed a secondary analysis of the APOSTEL III-trial (Dutch Clinical Trial Registry, number NTR2947). This was a randomized clinical trial that allocated women with threatened preterm labor between 25-34 weeks of gestation to nifedipine or atosiban...
April 28, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28446997/endoscopic-submucosal-dissection-and-endoscopic-mucosal-resection-for-early-stage-esophageal-cancer
#6
REVIEW
Bo Ning, Mohamed M Abdelfatah, Mohamed O Othman
Mortality from esophageal cancer remains high despite advances in medical therapy. Although the incidence of squamous cell carcinoma of the esophagus remains unchanged, the incidence of the esophageal adenocarcinoma has increased over time. Gastroesophageal reflux disease (GERD and obesity are contributing factors to the development of Barrett's esophagus and subsequent development of adenocarcinoma. Early recognition of the disease can lead to resection of esophageal cancer prior to the development of lymphovascular invasion...
March 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28412846/changes-in-levator-hiatus-dimensions-during-pregnancy-and-after-delivery-in-nulliparas-a-prospective-cohort-study-using-3d-transperineal-ultrasound
#7
A Sanozidis, T Mikos, E Assimakopoulos, A Athanasiadis, T Tantanassis, B C Tarlatzis, V Papameletiou
PURPOSE: The purpose of this study was to investigate the changes that occur in the levator ani muscle (1) during pregnancy and (2) after labor depending on the mode of delivery in a cohort of nulliparas. MATERIALS AND METHODS: A prospective cohort longitudinal study, consisting of 84 primiparas who were examined and recruited in an antenatal clinic was conducted. All participants were submitted to a real-time three-dimensional (3D) ultrasonographic evaluation of the levator ani at (1) 12, (2) 22, and (3) 32 weeks of pregnancy (4) and 4-6 months postdelivery...
May 5, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28399531/intrapartum-ultrasound-to-differentiate-flexion-and-deflexion-in-occipitoposterior-rotation
#8
Federica Bellussi, Tullio Ghi, Aly Youssef, Ilaria Cataneo, Ginevra Salsi, Giuliana Simonazzi, Gianluigi Pilu
OBJECTIVE: To evaluate the ability of intrapartum ultrasound to differentiate occipitoposterior (OP) rotation with normal flexion of the head from deflexion, to compare the accuracy of ultrasound with the digital examination, and to assess the outcome of labor according to the type of presentation. PATIENTS AND METHODS: A retrospective study of patients with abnormal labor because of either prolongation and/or abnormal cardiotocography and OP rotation who underwent intrapartum sonography...
April 12, 2017: Fetal Diagnosis and Therapy
https://www.readbyqxmd.com/read/28392944/monitoring-fetal-heart-rate-during-labor-a-comparison-of-three-methods
#9
Tammy Y Euliano, Shalom Darmanjian, Minh Tam Nguyen, John D Busowski, Neil Euliano, Anthony R Gregg
The purpose of the study was to compare the accuracy of a noninvasive fetal heart rate monitor with that of ultrasound, using a fetal scalp electrode as the gold standard, in laboring women of varying body habitus, throughout labor and delivery. Laboring women requiring fetal scalp electrode were monitored simultaneously with the investigational device (noninvasive fetal ECG), ultrasound, and fetal scalp electrode. An algorithm extracted the fetal heart rate from the noninvasive fetal ECG signal. Each noninvasive device recording was compared with fetal scalp electrode with regard to reliability by positive percent agreement and accuracy by root mean squared error...
2017: Journal of Pregnancy
https://www.readbyqxmd.com/read/28392581/ultrasound-versus-clinical-examination-to-estimate-fetal-weight-at-term
#10
Jan-Simon Lanowski, Gabriele Lanowski, Cordula Schippert, Kristina Drinkut, Peter Hillemanns, Ismini Staboulidou
Introduction At term, fetal weight estimation is an important factor for decisions about the delivery mode and the timing of labor induction. This study aimed to compare the accuracy of abdominal palpation with that of ultrasound performed by different examiners to estimate fetal weight. The study investigated whether differences in the examiners' training affected fetal weight estimates. The accuracy of the weight estimates made for fetuses with extreme birth weights was also evaluated. Finally, the accuracy of Johnson's method and of Insler and Bernstein's formula for estimating fetal weight were compared with the other two methods...
March 2017: Geburtshilfe und Frauenheilkunde
https://www.readbyqxmd.com/read/28387916/occiput-spine-relationship-shoulders-are-more-important-than-head
#11
A Svelato, A Ragusa, P Alimondi, M Di Tommaso, R Marci, V Barbagallo, R D F Alampi, G Calagna, A Perino
OBJECTIVE: To understand the role of fetal spine position in determining a fetal head position at the time of birth and modality of delivery. PATIENTS AND METHODS: This was a multicenter prospective observational study. Fetal occiput and spine position were evaluated by intrapartum ultrasound. Eighty-six women were eligible for inclusion in the study. Occiput rotational movements and modality of delivery in relation to the fetal spine position were investigated...
March 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28376638/transabdominal-collection-of-amniotic-fluid-sludge-and-identification-of-candida-albicans-intra-amniotic-infection
#12
Juan P Kusanovic, Roberto Romero, Carolina Martinovic, Karla Silva, Offer Erez, Eli Maymon, Francisco Díaz, Fernando Ferrer, Rafael Valdés, Víctor Córdova, Paula Vargas, María Elena Nilo, Patricio Le Cerf
A G3P2 patient who conceived while using an intrauterine contraceptive device (IUD) presented at 20 weeks of gestation with mild irregular uterine contractions and vaginal bleeding. Sonographic examination at admission showed the presence of dense amniotic fluid "sludge" and a long sonographic uterine cervix (42 mm). To assess the microbiologic significance of amniotic fluid "sludge", we performed a transabdominal amniocentesis. The procedure was performed under real-time ultrasound, and fluid resembling pus at gross examination was noted...
May 3, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28371793/ultrasound-standard-plane-detection-using-a-composite-neural-network-framework
#13
Hao Chen, Lingyun Wu, Qi Dou, Jing Qin, Shengli Li, Jie-Zhi Cheng, Dong Ni, Pheng-Ann Heng
Ultrasound (US) imaging is a widely used screening tool for obstetric examination and diagnosis. Accurate acquisition of fetal standard planes with key anatomical structures is very crucial for substantial biometric measurement and diagnosis. However, the standard plane acquisition is a labor-intensive task and requires operator equipped with a thorough knowledge of fetal anatomy. Therefore, automatic approaches are highly demanded in clinical practice to alleviate the workload and boost the examination efficiency...
March 30, 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28369942/sonographic-evaluation-of-the-fetal-spine-position-and-success-rate-of-manual-rotation-of-the-fetus-in-occiput-posterior-position-a-randomized-controlled-trial
#14
Bianca Masturzo, Antonio Farina, Lorenza Attamante, Annalisa Piazzese, Alessandro Rolfo, Pietro Gaglioti, Tullia Todros
BACKGROUND: To evaluate whether sonographic (US) diagnosis of the fetal spine position could increase the success rate of manual rotation of the fetal occiput (MRFO) in second-stage arrest in persistent occiput posterior position (OPP). METHODS: In this randomized controlled parallel single-center trial, 58 nulliparous in second-stage arrest of labor with fetus in cephalic presentation and OPP diagnosed by US were randomly assigned to group A where the fetal spine position was not known by the operator or to group B where the operator knew it...
April 3, 2017: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/28368798/-risks-factors-of-cesarean-delivery-after-3hours-of-delayed-pushing
#15
S Cheniere, S Ménard, M-C Lamau, F Goffinet, C Le Ray
OBJECTIVES: Identify the factors associated with caesarean delivery for unengaged fetal head beyond 3hours of passive second stage of labor, among primiparous patients. METHODS: A case-control study conducted in level III universitary center between October 2012 and September 2015. Only primiparous at term, with a singleton, cephalic fetus and a passive second stage of labor prolonged over 3hours before pushing were included. During the second stage of labor, patients who had caesarean for abnormal fetal heart rate were excluded...
February 2017: Gynecologie, Obstetrique, Fertilite & Senologie
https://www.readbyqxmd.com/read/28362600/fuiqa-fetal-ultrasound-image-quality-assessment-with-deep-convolutional-networks
#16
Lingyun Wu, Jie-Zhi Cheng, Shengli Li, Baiying Lei, Tianfu Wang, Dong Ni
The quality of ultrasound (US) images for the obstetric examination is crucial for accurate biometric measurement. However, manual quality control is a labor intensive process and often impractical in a clinical setting. To improve the efficiency of examination and alleviate the measurement error caused by improper US scanning operation and slice selection, a computerized fetal US image quality assessment (FUIQA) scheme is proposed to assist the implementation of US image quality control in the clinical obstetric examination...
May 2017: IEEE Transactions on Cybernetics
https://www.readbyqxmd.com/read/28350703/rf-safety-analysis-of-a-novel-ultra-wideband-fetal-monitoring-system
#17
Jerrold T Bushberg, J Paul Tupin
The LifeWave Ultra-Wideband RF sensor (LWUWBS) is a monitoring solution for a variety of physiologic assessment applications, including maternal fetal monitoring in both the antepartum and intrapartum periods. The system uses extremely low power radio frequency (RF) ultra-wide band (UWB) signals to provide continuous fetal heart rate and contractions monitoring during labor and delivery. Even with the incorporation of three very conservative assumptions, (1) concentration of the RF energy in 1 cm, (2) minimal (2...
May 2017: Health Physics
https://www.readbyqxmd.com/read/28339114/cervical-length-in-patients-at-risk-for-placenta-accreta
#18
Martha W F Rac, Donald D McIntire, C Edward Wells, Elysia Moschos, Diane D Twickler
OBJECTIVES: To evaluate cervical length measurements in women with placenta accreta compared to women with a nonadherent low-lying placenta or placenta previa and evaluate this relationship in terms of vaginal bleeding, preterm labor, and preterm birth. METHODS: We conducted a retrospective cohort study between 1997 and 2011 of gravidas with more than 1 prior cesarean delivery who had a transvaginal ultrasound examination between 24 and 34 weeks for a low-lying placenta or placenta previa...
March 24, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28327433/sonographic-prediction-of-outcome-of-vacuum-deliveries-a%C3%A2-multicenter-prospective-cohort-study
#19
Birgitte H Kahrs, Sana Usman, Tullio Ghi, Aly Youssef, Erik A Torkildsen, Elsa Lindtjørn, Tilde B Østborg, Sigurlaug Benediktsdottir, Lis Brooks, Lotte Harmsen, Pål R Romundstad, Kjell Å Salvesen, Christoph C Lees, Torbjørn M Eggebø
BACKGROUND: Safe management of the second stage of labor is of great importance. Unnecessary interventions should be avoided and correct timing of interventions should be focused. Ultrasound assessment of fetal position and station has a potential to improve the precision in diagnosing and managing prolonged or arrested labors. The decision to perform vacuum delivery is traditionally based on subjective assessment by digital vaginal examination and clinical expertise and there is currently no method of objectively quantifying the likelihood of successful delivery...
March 19, 2017: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28301207/second-opinion-review-of-breast-imaging-at-a-cancer-center-is-it-worthwhile
#20
Kristen Coffey, Donna D'Alessio, Delia M Keating, Elizabeth A Morris
OBJECTIVE: Second-opinion review of breast imaging studies can be a time-consuming and labor-intensive process. The purpose of this investigation was to determine whether reinterpretation of studies obtained at institutions outside a cancer center influences clinical management, specifically by revealing additional cancer and preventing unnecessary biopsy. MATERIALS AND METHODS: A review was conducted of breast imaging studies of 200 patients who underwent ultrasound and MRI at community facilities and had the images submitted for second opinions at a cancer center between January and April 2014...
March 16, 2017: AJR. American Journal of Roentgenology
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