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Cervical length in pregnancy

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https://www.readbyqxmd.com/read/28420506/prediction-of-spontaneous-preterm-delivery-in-asymptomatic-twin-pregnancies-using-cervical-length-and-granulocyte-elastase
#1
Kei Tanaka, Kenji Yamada, Miho Matsushima, Tomoko Izawa, Seishi Furukawa, Yoichi Kobayashi, Mitsutoshi Iwashita
OBJECTIVE: The purpose of this study was to evaluate sonographic cervical length (CL) and granulocyte elastase (GE) in cervical secretion as predictors of preterm delivery in asymptomatic twin pregnancies. MATERIALS AND METHODS: This study prospectively enrolled asymptomatic twin pregnancies with CL < 25 mm at 22-29 weeks of gestation. All women were hospitalized for preterm labor, and the cervical secretion was obtained for GE testing on admission. The results of CL measurement and GE testing were reviewed, and the relationship between each variables and preterm delivery prior to 34 weeks of gestation was assessed...
April 2017: Taiwanese Journal of Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28418597/mid-trimester-residual-cervical-length-and-the-risk-of-preterm-birth-in-pregnancies-after-abdominal-radical-trachelectomy-a-retrospective-analysis
#2
Yoshifumi Kasuga, Kei Miyakoshi, Hiroshi Nishio, Yohei Akiba, Toshimitsu Otani, Marie Fukutake, Satoru Ikenoue, Daigo Ochiai, Tadashi Matsumoto, Kyoko Tanaka, Kazuhiro Minegishi, Naoaki Kuji, Rachel Roberts, Daisuke Aoki, Mamoru Tanaka
OBJECTIVE: To investigate the association between the mid-trimester residual cervical length (CL) and the risk of preterm birth in pregnancies after abdominal radical trachelectomy (RT). DESIGN: Retrospective cohort study. SETTING: University Hospital. POPULATION: A total of 33 deliveries after 22 weeks' gestation in 30 women who underwent abdominal RT including prophylactic cervical cerclage and perinatal care between January 2002 and May 2016...
April 18, 2017: BJOG: An International Journal of Obstetrics and Gynaecology
https://www.readbyqxmd.com/read/28399138/short-cervical-lengths-initially-detected-in-mid-trimester-and-early-in-the-third-trimester-in-asymptomatic-twin-gestations-association-with-histologic-chorioamnionitis-and-preterm-birth
#3
Jeong Woo Park, Kyo Hoon Park, Eun Young Jung, Soo-Hyun Cho, Ji Ae Jang, Ha-Na Yoo
OBJECTIVE: To determine whether short cervical lengths (≤20 mm) that were initially detected in mid-trimester and early in the third trimester are independently associated with increased risks of subsequent histologic chorioamnionitis and spontaneous preterm birth (SPTB, defined as a delivery before 34 weeks) in asymptomatic women with twin pregnancies. MATERIAL AND METHODS: This is a prospective study including 292 consecutive asymptomatic women with twin gestations...
2017: PloS One
https://www.readbyqxmd.com/read/28398701/cervical-pessary-for-preventing-preterm-birth-in-singleton-pregnancies-with-short-cervical-length-a-systematic-review-and-meta-analysis
#4
Gabriele Saccone, Andrea Ciardulli, Serena Xodo, Lorraine Dugoff, Jack Ludmir, Giorgio Pagani, Silvia Visentin, Salvatore Gizzo, Nicola Volpe, Giuseppe Maria Maruotti, Giuseppe Rizzo, Pasquale Martinelli, Vincenzo Berghella
OBJECTIVES: To evaluate the effectiveness of cervical pessary for preventing spontaneous preterm birth (SPTB) in singleton gestations with a second trimester short cervix. METHODS: Electronic databases were searched from their inception until February 2016. We included randomized clinical trials (RCTs) comparing the use of the cervical pessary with expectant management in singletons pregnancies with transvaginal ultrasound cervical length (TVU CL) ≤25 mm. The primary outcome was incidence of SPTB <34 weeks...
April 11, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28397052/pregnancy-outcomes-following-transvaginal-cerclage-for-cervical-insufficiency-results-from-a-single-center-retrospective-study
#5
Sheng Wang, Ying Wang, Ling Feng
To study maternal and perinatal outcomes after cervical cerclage in both singleton and twin pregnancies, we retrospectively reviewed women undergoing cervical cerclage for cervical insufficiency at Tongji Hospital, Wuhan, China from January 1, 2010 to July 31, 2015 to evaluate primary and secondary outcomes for subgroups with cervical length (CL) ≤15, >15 to <25, and ≥25 mm. Of 166 patients who underwent cervical cerclage, after exclusion of patients with missed abortion and continuing pregnancy, 141 patients (121 singleton and 20 twin pregnancies) were included in the analysis...
April 2017: Journal of Huazhong University of Science and Technology. Medical Sciences
https://www.readbyqxmd.com/read/28370687/mid-trimester-sonographic-cervical-consistency-index-to-predict-spontaneous-preterm-birth-in-a-low-risk-population
#6
Núria Baños, Clara Murillo-Bravo, Carla Julià, Federico Migliorelli, Alvaro Perez-Moreno, Jose Ríos, Eduard Gratacos, Lil Valentin, Montse Palacio
OBJECTIVES: To estimate the ability of mid-trimester sonographic Cervical Consistency Index (CCI) to predict spontaneous preterm birth (sPTB) in low-risk pregnancies and to compare its performance with mid-trimester sonographic cervical length (CL). METHODS: This is a prospective cohort study including women with singleton pregnancies examined with ultrasound at 19 + 0 to 24 + 6 gestational weeks. All underwent transvaginal ultrasound examination of the cervix, but CCI and CL were measured off-line only in women without risk factors for sPTB...
March 31, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28320233/does-cervical-cerclage-decrease-preterm-birth-in-twin-pregnancies-with-a-short-cervix
#7
Tracy M Adams, Timothy J Rafael, Nadia B Kunzier, Supriya Mishra, Rose Calixte, Anthony M Vintzileos
PURPOSE: To determine if use of cerclage in twin gestations with mid-trimester short cervix is associated with decreased preterm birth rate. STUDY DESIGN: This is a retrospective cohort of twin gestations identified with cervical length of ≤2.5 cm before 24 weeks of gestation through the perinatal ultrasound database of two institutions from 2008 to 2014. Patients with and without cerclage were compared for a primary outcome of preterm birth at <35 weeks...
April 10, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28320033/is-the-relationship-between-short-interpregnancy-interval-and-preterm-birth-related-to-a-short-cervix
#8
S Govindappagari, N Zork, A Merriam, C Gyamfi-Bannerman
Objective Our objective was to determine if the relationship between interpregnancy interval (IPI) and preterm delivery was related to cervical shortening. Methods This is a secondary analysis of a prospective cohort study designed to assess the relationship between cervical length (CL) and preterm delivery. Multiparous patients, who had transvaginal CLs obtained at 22 to 24 weeks and complete pregnancy outcome data available were included. The women were divided into two groups: Group 1 with an IPI of ≤ 1 year and Group 2 with an IPI of > 1 year...
March 20, 2017: American Journal of Perinatology
https://www.readbyqxmd.com/read/28318214/preterm-labor-prevention-and-management
#9
Kristen Rundell, Bethany Panchal
In the United States, preterm delivery is the leading cause of neonatal morbidity and is the most common reason for hospitalization during pregnancy. The rate of preterm delivery (before 37 weeks' gestation) has been declining since 2007. Clinical diagnosis of preterm labor is made if there are regular contractions and concomitant cervical change. Less than 10% of women with a clinical diagnosis of preterm labor will deliver within seven days of initial presentation. Women with a history of spontaneous preterm delivery are 1...
March 15, 2017: American Family Physician
https://www.readbyqxmd.com/read/28303276/a-parameterized-ultrasound-based-finite-element-analysis-of-the-mechanical-environment-of-pregnancy
#10
Andrea R Westervelt, Michael Fernandez, Michael House, Joy Vink, Chia-Ling Nhan-Chang, Ronald Wapner, Kristin M Myers
Preterm birth is the leading cause of childhood mortality and can lead to health risks in survivors. The mechanical functions of the uterus, fetal membranes, and cervix have dynamic roles to protect the fetus during gestation. To understand their mechanical function and relation to preterm birth, we built a three-dimensional parameterized finite element model of pregnancy. This model is generated by an automated procedure that is informed by maternal ultrasound measurements. A baseline model at 25 weeks of gestation was characterized, and to visualize the impact of cervical structural parameters on tissue stretch, we evaluated the model sensitivity to (1) anterior uterocervical angle, (2) cervical length, (3) posterior cervical offset, and (4) cervical stiffness...
May 1, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28295801/cervical-length-measurement-at-mid-gestation-to-predict-spontaneous-preterm-birth-in-asymptomatic-triplet-pregnancies
#11
A Fichera, G Pagani, V Stagnati, S Cascella, S Faiola, C Gaini, M Lanna, L Pasquini, R Raffaelli, T Stampalija, A Tommasini, F Prefumo
OBJECTIVE: To assess the predictive value of cervical length (CL) measured at mid gestation for spontaneous preterm birth (PTB) in triplet pregnancies. METHODS: Retrospective study on asymptomatic triplet pregnancies followed at five Italian tertiary referral centres, between 2002 and 2015. CL was measured transvaginally between 18-24 weeks of gestation. Pregnancies with a medically indicated PTB were excluded. Demographic and pregnancy characteristics of pregnancies complicated with PTB were analysed and the distributions of CL measurements in these patients were calculated...
March 13, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28295722/cerclage-for-short-cervix-on-ultrasound-in-singleton-gestations-without-prior-spontaneous-preterm-birth-a-systematic-review-and-meta-analysis-of-trials-using-individual-patient-level-data
#12
REVIEW
Vincenzo Berghella, Andrea Ciardulli, Orion A Rust, Meekai To, Katsufumi Otsuki, Sietske Althuisius, Kypros Nicolaides, Amanda Roman, Gabriele Saccone
OBJECTIVE: The aim of this systematic review and meta-analysis was to quantify the efficacy of cervical cerclage in preventing preterm birth (PTB) in asymptomatic singleton pregnancies with a mid-trimester short transvaginal ultrasound cervical length (TVU CL) and without prior spontaneous PTB. METHODS: Electronic databases were searched from inception of each database until February 2017. No language restrictions were applied. We included all randomized controlled trials (RCTs) of asymptomatic singleton pregnancies without prior spontaneous PTB screened with TVU CL, found to have a midtrimester short CL <25 mm, and then randomized to management with either cerclage (i...
March 10, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28295170/implementing-universal-cervical-length-screening-in-asymptomatic-women-with-singleton-pregnancies-challenges-and-opportunities
#13
Michelle K Pedretti, Brenda M Kazemier, Jan E Dickinson, Ben W J Mol
Cervical length (CL) screening has been successfully utilised to identify asymptomatic women, with a singleton pregnancy, at risk of preterm birth (PTB), thereby providing an opportunity to offer interventions that may reduce that risk. Cervical length screening with ultrasound is most effectively performed with a transvaginal approach. Universal cervical length screening, encompassing all singleton pregnancies rather than restricting screening to those considered at increased risk of PTB, is currently not widely used, despite a growing body of evidence in support of its utility for PTB prevention...
March 10, 2017: Australian & New Zealand Journal of Obstetrics & Gynaecology
https://www.readbyqxmd.com/read/28291893/predictive-accuracy-of-serial-transvaginal-cervical-lengths-and-quantitative-vaginal-fetal-fibronectin-levels-for-spontaneous-preterm-birth-among-nulliparous-women
#14
M Sean Esplin, Michal A Elovitz, Jay D Iams, Corette B Parker, Ronald J Wapner, William A Grobman, Hyagriv N Simhan, Deborah A Wing, David M Haas, Robert M Silver, Matthew K Hoffman, Alan M Peaceman, Steve N Caritis, Samuel Parry, Pathik Wadhwa, Tatiana Foroud, Brian M Mercer, Shannon M Hunter, George R Saade, Uma M Reddy
Importance: Spontaneous preterm birth is a leading cause of infant mortality. Prediction, largely based on prior pregnancy outcomes, is not possible in women pregnant for the first time. Objective: To assess the accuracy of universal screening to predict spontaneous preterm birth in nulliparous women using serial measurements of vaginal fetal fibronectin levels and cervical length. Design, Settings, and Participants: A prospective observational cohort study of nulliparous women with singleton pregnancies, from 8 clinical sites across the United States between October 2010 and May 2014...
March 14, 2017: JAMA: the Journal of the American Medical Association
https://www.readbyqxmd.com/read/28281301/doppler-assessment-of-patients-with-twin-to-twin-transfusion-syndrome-and-survival-following-fetoscopic-laser-surgery
#15
Enrique Gil Guevara, Andrea Pazos, Otilia Gonzalez, Pilar Carretero, Francisca S Molina
OBJECTIVE: To investigate fetal-survival rates following laser surgery for twin-to-twin transfusion syndrome (TTTS) and the impact of Doppler analysis. METHODS: The present retrospective single-center study included data from patients with pregnancies exhibiting TTTS treated with fetoscopic laser surgery between January 1, 2007, and December 31, 2016. Perinatal outcomes were examined and variables were compared between the donor and recipient fetuses that survived and died, respectively...
March 9, 2017: International Journal of Gynaecology and Obstetrics
https://www.readbyqxmd.com/read/28277920/the-role-of-serial-measurements-of-cervical-length-in-asymptomatic-women-with-triplet-pregnancy
#16
Hadar Rosen, Liran Hiersch, Howie Freeman, Jon Barrett, Nir Melamed
OBJECTIVE: To assess the predictive accuracy of serial measurements of cervical length (CL) for preterm birth in asymptomatic women with triplet pregnancy. METHODS: A retrospective study of women with triplets who underwent serial sonographic measurements of CL until 28-32 weeks of gestation. The predictive accuracy of CL for preterm birth was determined at 4 periods along gestation: 18-20 weeks (period 1), 21-24 weeks (period 2), 25-27 weeks (period 3) and 28-32 weeks (period 4)...
February 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28277132/maternal-serum-cytokine-levels-in-pregnancies-complicated-with-threatened-preterm-labour
#17
Alejandra Herrera-Muñoz, Ana M Fernández-Alonso, Natalia Fischer-Suárez, Peter Chedraui, Faustino R Pérez-López
OBJECTIVE: To investigate serum inflammatory markers in singleton gestations complicated with threatened preterm labour (TPL). METHODS: Pregnant women complicated with TPL (n = 61) were recruited to measure maternal serum levels of a panel of cytokines and C-reactive protein and then compared to controls without TPL, matched for gestational age (n = 64) and term pregnancies in the prodromal phase of labour (PPL) (n = 31). In addition, baseline cytokine levels were compared among cases and controls according to the outcome...
February 21, 2017: Gynecological Endocrinology
https://www.readbyqxmd.com/read/28266156/re-cervical-length-screening-for-prevention-of-preterm-birth-in-singleton-pregnancy-with-threatened-preterm-labor-systematic-review-and-meta-analysis-of-randomized-controlled-trials-using-individual-patient-level-data-v-berghella-m-palacio-a-ness-z-alfirevic
#18
COMMENT
https://www.readbyqxmd.com/read/28255763/cervical-length-after-cerclage-comparison-between-laparoscopic-and-vaginal-approach
#19
Daniele Bolla, Maria Luisa Gasparri, Sabrina Badir, Michael Bajka, Michael D Mueller, Andrea Papadia, Luigi Raio
PURPOSE: The aim of our study was to investigate the sonographic changes of the cervical length during pregnancy after the placement of a transvaginal cervical cerclage (TVC) or a laparoscopic abdominal cerclage (LAC) in patients with cervical insufficiency (CI). METHODS: Between January 2008 and March 2015, a retrospective analysis of all women undergoing a prophylactic laparoscopic (LAC group) or transvaginal (TVC group) cerclage due to cervical insufficiency was conducted...
March 3, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/28237336/effect-of-numbers-of-sperm-and-timing-of-a-single-post-cervical-insemination-on-the-fertility-of-weaned-sows-treated-with-ovugel-%C3%A2
#20
R V Knox, K C Esparza-Harris, M E Johnston, S K Webel
Variability in estrus and ovulation requires multiple inseminations during estrus to ensure one AI occurs close to ovulation. Induction of ovulation after weaning improves synchrony of ovulation and allows for fixed time AI. However, the interaction between number of sperm in the AI dose and the timing of insemination has not been fully investigated. The objective of this study was to determine the effects of sperm numbers used in a single post-cervical insemination (PCAI) and the timing of insemination following induced ovulation in weaned sows...
April 1, 2017: Theriogenology
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