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https://www.readbyqxmd.com/read/28716915/prostaglandin-dehydrogenase-is-a-target-for-successful-induction-of-cervical-ripening
#1
Annavarapu Hari Kishore, Hanquan Liang, Mohammed Kanchwala, Chao Xing, Thota Ganesh, Yucel Akgul, Bruce Posner, Joseph M Ready, Sanford D Markowitz, Ruth Ann Word
The cervix represents a formidable structural barrier for successful induction of labor. Approximately 10% of pregnancies undergo induction of cervical ripening and labor with prostaglandin (PG) E2 or PGE analogs, often requiring many hours of hospitalization and monitoring. On the other hand, preterm cervical ripening in the second trimester predicts preterm birth. The regulatory mechanisms of this paradoxical function of the cervix are unknown. Here, we show that PGE2 uses cell-specific EP2 receptor-mediated increases in Ca(2+) to dephosphorylate and translocate histone deacetylase 4 (HDAC4) to the nucleus for repression of 15-hydroxy prostaglandin dehydrogenase (15-PGDH)...
July 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28706170/-multiple-factors-in-the-second-trimester-of-pregnancy-on-preterm-labor-symptoms-and-preterm-birth
#2
Jeung Im Kim, Mi Ock Cho, Gyu Yeon Choi
PURPOSE: The aim of this study was to determine the influence of various factors on preterm labor symptoms (PLS) and preterm birth (PB). METHODS: This prospective cohort study included 193 women in the second stage of pregnancy. Multiple characteristics including body mass index (BMI), smoking, and pregnancy complications were collected through a self-report questionnaire. Pregnancy stress and PLS were each measured with a related scale. Cervical length and birth outcome were evaluated from medical charts...
June 2017: Journal of Korean Academy of Nursing
https://www.readbyqxmd.com/read/28693352/transvaginal-sonographic-assessment-of-cervix-in-prediction-of-admission-to-delivery-interval-in-preterm-premature-rupture-of-membranes
#3
Vimala Kathir, Dilip Maurya, Anish Keepanasseril
OBJECTIVE: To assess the usefulness of cervical parameters measured by transvaginal sonography, ie cervical length and posterior cervical angle, in predicting the admission to delivery interval in women with preterm rupture of membranes. METHODS: This prospective study was conducted in a tertiary care centre in South India. Women with preterm premature rupture of membranes at 28-34 weeks, confirmed clinically, not in labour and presenting within 24 hours to hospital were included...
July 10, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28651447/the-association-between-fetal-fibronectin-and-spontaneous-preterm-birth-in-twin-pregnancies-with-a-shortened-cervical-length
#4
Kathy C Matthews, Simi Gupta, Jennifer Lam-Rachlin, Daniel H Saltzman, Andrei Rebarber, Nathan S Fox
OBJECTIVE: To estimate the association between a positive fetal fibronectin (fFN) and spontaneous preterm birth (SPTB) in twin pregnancies with a shortened cervical length (CL). STUDY DESIGN: Retrospective cohort study of asymptomatic twin pregnancies managed by a single MFM practice from 2005-2016. We included all women with a shortened CL ≤25 mm at 22-28 weeks, and compared outcomes between women with a positive and negative fFN result. RESULTS: One hundred fifty-five patients were included, 129 (83...
June 26, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28639717/a-prospective-study-on-transvaginal-ultrasound-of-cervical-length-cl-in-the-first-and-second-trimester-in-a-low-risk-population
#5
C B Wulff, L Rode, S Rosthøj, E Hoseth, O B Petersen, A Tabor
OBJECTIVES: To assess cervical length (CL) longitudinally in the first and second trimester and to determine the proportion of women with a short CL. Further, to assess if women with a short CL at 19-24 weeks could be identified at the combined first-trimester screening (cFTS) at 11-14 weeks in relation to a potential implementation of CL screening in the Danish population. METHODS: We recruited singleton pregnant women attending the combined first-trimester screening from 1 November 2013 to 1 December 2014 to a longitudinal prospective study at three University Hospitals in Denmark...
June 22, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28594783/progestogens-for-maintenance-tocolysis-in-women-with-a-short-cervix-a-randomized-controlled-trial
#6
Fabio Facchinetti, Patrizia Vergani, Mariarosaria Di Tommaso, Luca Marozio, Barbara Acaia, Roberto Vicini, Lucrezia Pignatti, Anna Locatelli, Marina Spitaleri, Chiara Benedetto, Barbara Zaina, Roberto DʼAmico
OBJECTIVE: To assess the efficacy of progestogens for maintenance tocolysis in women undelivered after their first preterm labor episode. METHODS: Women with singleton pregnancies between 22 0/7 and 31 6/7 weeks of gestation with arrested preterm labor and a cervical length 25 mm or less at hospital discharge were eligible. Patients with a previous preterm birth were excluded. In a randomized controlled trial conducted in five university hospitals, women were randomized to receive vaginal progesterone (200 mg per day) or intramuscular 17α-hydroxyprogesterone caproate (341 mg per week) or to an observation groups (control group)...
July 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28594774/cervical-evaluation-from-ancient-medicine-to-precision-medicine
#7
Helen Feltovich
Since ancient times, cervical assessment for predicting timing of delivery has relied primarily on digital (subjective) assessment of dilatation, softening, and length. To date, transvaginal ultrasound cervical length is the only one of these parameters that meets criteria for a biomarker; no objective, quantitative measure of cervical dilatation or softening has gained clinical acceptance. This review discusses how the cervix has been assessed from ancient times to the present day and how a precision medicine approach could improve understanding of not only the cervix, but also parturition in general...
July 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28586106/sonographic-measurement-of-cervical-volume-in-pregnant-women-at-high-risk-of-preterm-birth-using-a-geometric-formula-for-a-frustum-versus-3-dimensional-automated-virtual-organ-computer-aided-analysis
#8
Ahmed I Ahmed, Sarah R Aldhaheri, Javier Rodriguez-Kovacs, Deepa Narasimhulu, Manesha Putra, Howard Minkoff, Shoshana Haberman
OBJECTIVES: To compare cervical volume measurements by 3-dimensional (3D) sonography using Virtual Organ computer-aided analysis (VOCAL; GE Healthcare, Milwaukee, WI) versus a manual method using a geometric formula for a frustum. METHODS: We included 142 asymptomatic pregnant women at 16 to 24 weeks gestation at high risk for preterm birth. With a Voluson 730 Expert system (GE Healthcare), they underwent 2-dimensional (2D) transvaginal sonographic cervical length measurements and 3D cervical volume acquisition...
June 6, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28585708/the-cytokine-network-in-women-with-an-asymptomatic-short-cervix-and-the-risk-of-preterm-delivery
#9
Adi L Tarca, Wendy Fitzgerald, Piya Chaemsaithong, Zhonghui Xu, Sonia S Hassan, Jean-Charles Grivel, Nardhy Gomez-Lopez, Bogdan Panaitescu, Percy Pacora, Eli Maymon, Offer Erez, Leonid Margolis, Roberto Romero
PROBLEM: To characterize the amniotic fluid (AF) inflammatory-related protein (IRP) network in patients with a sonographic short cervix (SCx) and to determine its relation to early preterm delivery (ePTD). METHOD OF STUDY: A retrospective cohort study included women with a SCx (≤25 mm; n=223) who had amniocentesis and were classified according to gestational age (GA) at diagnosis and delivery (ePTD <32 weeks of gestation). RESULTS: (i) In women with a SCx ≤ 22 1/7 weeks, the concentration of most IRPs increased as the cervix shortened; those with ePTD had a higher rate of increase in MIP-1α, MCP-1, and IL-6 concentrations than those delivering later; and (ii) the concentration of most IRPs and the correlation between several IRP pairs were higher in the ePTD group than for those delivering later...
June 6, 2017: American Journal of Reproductive Immunology: AJRI
https://www.readbyqxmd.com/read/28570639/cerclage-position-cervical-length-and-preterm-delivery-in-women-undergoing-ultrasound-indicated-cervical-cerclage-a-retrospective-cohort-study
#10
Joanna R Cook, Susan Chatfield, Manju Chandiramani, Lindsay Kindinger, Stefano Cacciatore, Lynne Sykes, Tiong Teoh, Andrew Shennan, Vasso Terzidou, Phillip R Bennett
OBJECTIVE: The objectives were to assess whether anatomical location of ultrasound (USS) indicated cervical cerclage and/or the degree of cervical shortening (cervical length; CL) prior to and following cerclage affects the risk of preterm birth (PTB). METHOD: A retrospective cohort study of 179 women receiving cerclage for short cervix (≤25mm) was performed. Demographic data, CL before and after cerclage insertion, height of cerclage (distance from external os) and gestation at delivery were collected...
2017: PloS One
https://www.readbyqxmd.com/read/28535404/placental-inflammation-and-its-relationship-to-cervicovaginal-fetal-fibronectin-in-preterm-birth
#11
Laura van der Krogt, Alexandra E Ridout, Paul T Seed, Andrew H Shennan
OBJECTIVE: Late miscarriage and preterm birth are frequently thought to be associated with inflammation and infection, although in most cases the underlying cause of early delivery remains unknown. The placenta is the organ that links mother and fetus during pregnancy, and postnatal examination may provide useful information about pathophysiology. The relationship between placental pathological lesions and predictive markers of early delivery has not been explored. We sought to characterize preterm deliveries according to placental pathology and relate these to the performance of reliable predictive markers, fetal fibronectin and cervical length...
July 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28521590/sonographic-appearance-of-the-uterus-in-the-early-puerperium-in-vaginal-vs-cesarean-deliveries-a-prospective-study
#12
Ron Bardin, Eran Ashwal, Hila Zilber, Kinneret Tenenbaum-Gavish, Liran Hiersch, Eran Hadar, Israel Meizner, Rinat Gabbay-Benziv
PURPOSE: To compare uterine sonographic characteristics in early puerperium, following vaginal versus cesarean deliveries; and in women with abnormal third stage of labor, compared to uncomplicated vaginal delivery. MATERIALS AND METHODS: This is a prospective study of women after delivery of singleton, appropriate-for-gestational-age weight, term neonates; 66 women delivered vaginally and 33 delivered by cesarean section. Sonographic uterine dimensions (height, length and width), intracavitary thickness and its echogenicity (at level of fundus, midcavity and cervix) were recorded at less than and after 24 hours from delivery, and compared between women delivered vaginally and by cesarean section...
May 19, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28511455/cervical-conization-and-the-risk-of-preterm-birth-a-population-based-multicentric-trial-of-turkish-cohort
#13
Ali Galip Zebitay, Emre Sinan Güngör, Gülsah Ilhan, Orkun Çetin, Cem Dane, Canan Furtuna, Fatma Ferda Verit Atmaca, Merve Tuna
INTRODUCTION: Cold Knife Conization (CKC) is one of the most effective methods for the treatment of Cervical Intraepithelial Neoplasia (CIN). Some studies showed a relation between preterm birth and the treatment of CIN; on the other hand, other studies do not show such a relationship. AIM: The present study was conducted with the aim to investigate the pregnancy outcomes of Turkish women regarding demographic characteristics, obstetric history, removed tissue, and residual cervical length after CKC and to determine the effect of removed cervical tissue volume and height on preterm birth...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28508418/quantitative-analysis-of-the-cervical-texture-by-ultrasound-in-the-mid-pregnancy-is-associated-with-spontaneous-preterm-birth
#14
Núria Baños, Alvaro Perez-Moreno, Carla Julià, Clara Murillo-Bravo, David Coronado, Eduard Gratacos, Jan Deprest, Montse Palacio
OBJECTIVE: New tools are required to identify women at increased risk of spontaneous preterm birth (sPTB). Quantitative texture analysis by ultrasound has been used to extract robust features from the ultrasound image of a given tissue to detect subtle changes in its microstructure. This may also be applied to the cervix. We aimed to determine if there is an association between quantitative analysis of the cervical texture (CTx) by ultrasound in the mid-trimester of pregnancy and sPTB <37(+0) weeks...
May 15, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28502186/effectiveness-of-dydrogesterone-17-oh-progesterone-and-micronized-progesterone-in-prevention-of-preterm-birth-in-women-with-a-short-cervix
#15
Olga Pustotina
OBJECTIVE: To compare the efficacy of dydrogesterone, 17-OH progesterone (17OHP) and oral or vaginal micronized progesterone with cerclage for the prevention of preterm birth in women with a short cervix. METHODS: The study included 95 women with singleton gestation and cervical length (CL) ≤ 25 mm. Among these, 35 women were asymptomatic at 15-24 weeks and 60 had symptoms of threatened late miscarriage (LM) or preterm delivery (PD) at 15-32 weeks. Patients were randomized to receive dydrogesterone, 17OHP or oral/vaginal micronized progesterone; after one week of therapy 15 women underwent cerclage...
May 29, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28491092/can-transabdominal-scan-predict-a-short-cervix-by-transvaginal-scan
#16
Jayaraman Mavila Nambiar, Muralidhar Vaman Pai, Arevidya Reddy, Pratap Kumar
Background. To determine whether transabdominal screening can be used to screen women with short cervix on transvaginal scan. Methods. The study was done between 18 and 20 weeks of gestation. Transabdominal scan was done and cervical length was measured. Transvaginal scan was also done and cervical length was measured. An attempt was made to find out whether transabdominal scan be used to predict a cervical length of 25 mm by transvaginal scan. Results. In our study the cut-off for transabdominal scan for detecting a short cervix of 25 mm by transvaginal scan was 29 mm...
2017: Obstetrics and Gynecology International
https://www.readbyqxmd.com/read/28486361/universal-cervical-length-screening-and-antenatal-corticosteroid-timing
#17
Nicole Sahasrabudhe, Catherine Igel, Ghislaine C Echevarria, Peʼer Dar, Diana Wolfe, Peter S Bernstein, Robert Angert, Ashlesha Dayal, Patience Gallagher, Mara Rosner
OBJECTIVE: To evaluate the relationship between universal transvaginal screening for short cervical length in the second trimester and the timing of antenatal corticosteroids. METHODS: We performed a retrospective cohort study of patients with nonanomalous singleton gestations and spontaneous preterm birth between 24 and 34 weeks of gestation after the initiation of a universal transvaginal cervical length screening program between October 2012 and August 2015. Our primary outcome was antenatal corticosteroid administration to a delivery interval of fewer than 7 days...
June 2017: Obstetrics and Gynecology
https://www.readbyqxmd.com/read/28481445/optimising-fertility-outcomes-for-women-with-early-stage-cervical-cancer-when-less-is-more
#18
E Tingi, E J Crosbie, G Owens
No abstract text is available yet for this article.
May 8, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28475099/vaginal-examination-vs-cervical-length-which-is-superior-in-predicting-preterm-birth
#19
Merav Sharvit, Reut Weiss, Yael Ganor Paz, Keren Tzadikevitch Geffen, Netanella Danielli Miller, Tal Biron-Shental
OBJECTIVE: To compare the predictive value of preterm birth (PTB) by transvaginal sonographic cervical length (CL) measurement to digital examination of the cervix (Bishop score - BS), in patients with premature contractions (PC) and intact membranes. DESIGN: A retrospective case-control study. SETTING: Meir Medical Center, Kfar Saba, Israel. POPULATION: Women at 24-34 weeks of gestation who were hospitalized with PC and intact membranes...
February 11, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28461768/cervical-elastography-during-pregnancy-clinical-perspectives
#20
REVIEW
Malgorzata Swiatkowska-Freund, Krzysztof Preis
Uterine cervix is a part of the uterus responsible for maintaining pregnancy till term. As long as the cervix remains long and firm and its internal orifice (os) is closed, it can withstand enlargement of the uterine contents and resultant growing pressure. Mechanical properties of the cervix change during pregnancy; the cervix ripens prior to delivery, then effaces and dilates with contractions of the uterus. Ripening of the cervix can be assessed using the Bishop score and ultrasonographically determined length of the cervical canal and internal os...
2017: International Journal of Women's Health
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