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Cervical length and preterm birth

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https://www.readbyqxmd.com/read/28535404/placental-inflammation-and-its-relationship-to-cervicovaginal-fetal-fibronectin-in-preterm-birth
#1
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...
May 3, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/28514880/the-uterocervical-angle-and-its-relationship-with-preterm-birth
#2
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/28511455/cervical-conization-and-the-risk-of-preterm-birth-a-population-based-multicentric-trial-of-turkish-cohort
#3
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
#4
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/efectiveness-of-dydrogesterone-17-oh-progesterone-and-micronized-progesterone-in-prevention-of-preterm-birth-in-women-with-a-short-cervix
#5
Olga Anatolievna 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). Patients were randomized to receive dydrogesterone, 17OHP or oral/vaginal micronized progesterone; after one week of therapy 15 women underwent cerclage...
May 14, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28486361/universal-cervical-length-screening-and-antenatal-corticosteroid-timing
#6
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/28475099/vaginal-examination-vs-cervical-length-which-is-superior-in-predicting-preterm-birth
#7
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/28454755/pregnancy-outcomes-of-women-admitted-to-a-tertiary-care-centre-with-short-cervix
#8
Alison K Shea, Andrea N Simpson, Jon Barrett, Noor Ladhani, Ori Nevo
OBJECTIVE: Our aim was to characterize the management and outcome of women admitted to a tertiary high-risk obstetrics unit with a short cervix (≤25 mm), measured on transvaginal ultrasound (TVS), and to determine the latency period from diagnosis to delivery. METHODS: A retrospective chart review of women admitted to the High Risk Obstetrics Unit at Sunnybrook Health Sciences Centre between 2005-2011 with an ultrasound-identified short cervix was done. RESULTS: A total of 110 women admitted for a short cervix between 2005-2011 (N = 56 singletons; N = 54 twin gestations) met the inclusion criteria...
May 2017: Journal of Obstetrics and Gynaecology Canada: JOGC, Journal D'obstétrique et Gynécologie du Canada: JOGC
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
#9
Y Kasuga, K Miyakoshi, H Nishio, Y Akiba, T Otani, M Fukutake, S Ikenoue, D Ochiai, T Matsumoto, K Tanaka, K Minegishi, N Kuji, R Roberts, D Aoki, M Tanaka
OBJECTIVE: To investigate the association between 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
#10
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
#11
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
#12
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
#13
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/28339114/cervical-length-in-patients-at-risk-for-placenta-accreta
#14
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/28320241/implementation-of-a-universal-cervical-length-screening-program-identifying-factors-associated-with-decline-rates
#15
Jeny Ghartey, Neda Ghaffari, Lisa D Levine, Nadav Schwartz, Celeste P Durnwald
PURPOSE: Cervical length (CL) measurement is now accepted as a screening strategy for identifying women at risk for preterm birth (PTB). However, patient acceptability may limit its implementation. Our objective was to identify characteristics associated with women who decline this screening. MATERIALS AND METHODS: This is a secondary analysis of a prospective cohort study of women offered UCL screening from January 2012-June 2012. Women with a singleton gestation 18 0/7-23 6/7 weeks at the time of anatomy scan were included...
March 20, 2017: Journal of Maternal-fetal & Neonatal Medicine
https://www.readbyqxmd.com/read/28320233/does-cervical-cerclage-decrease-preterm-birth-in-twin-pregnancies-with-a-short-cervix
#16
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
#17
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/28303276/a-parameterized-ultrasound-based-finite-element-analysis-of-the-mechanical-environment-of-pregnancy
#18
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
#19
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
#20
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
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