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Cervical length

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https://www.readbyqxmd.com/read/28344605/a-method-to-incorporate-interstitial-components-into-the-tps-gynecologic-rigid-applicator-library
#1
Antonio Otal, Jose Richart, Silvia Rodriguez, Manuel Santos, Jose Perez-Calatayud
PURPOSE: T2 magnetic resonance imaging (MRI) is recommended as the imaging modality for image-guided brachytherapy. In locally advanced cervical carcinoma, combined endocavitary and interstitial applicators are appropriate (Vienna or Utrecht). To cover extensive disease, Template Benidorm (TB) was developed. Treatment planning system applicator libraries are currently unavailable for the Utrecht applicator or the TB. The purpose of this work is to develop an applicator library for both applicators...
February 2017: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/28343677/influence-of-adhesive-cementation-systems-on-the-bond-strength-of-relined-fiber-posts-to-root-dentin
#2
Raquel Viana Rodrigues, Camila Sobral Sampaio, Rafael Rocha Pacheco, Fernanda Miori Pascon, Regina Maria Puppin-Rontani, Marcelo Giannini
STATEMENT OF PROBLEM: Glass fiber post cementation procedures have undergone significant development. Relining the post with composite resin is a technique that aims to reduce resin cement thickness and consequently problems inherent to polymerization. Evidence is sparse regarding the efficacy of bonding procedures at increasing depths (from cervical to apical) using different adhesive cementation techniques. PURPOSE: The purpose of this in vitro study was to evaluate the push-out bond strength (PBS) of composite resin relined glass fiber posts cemented to bovine root dentin using different adhesive cementation protocols...
March 23, 2017: Journal of Prosthetic Dentistry
https://www.readbyqxmd.com/read/28343332/posterior-elements-disruption-with-hybrid-constructs-in-ais-patients-is-there-an-impact-on-proximal-junctional-kyphosis
#3
S Ghailane, Sebastien Pesenti, E Peltier, E Choufani, B Blondel, J L Jouve
PURPOSE: Proximal junctional kyphosis (PJK) is a frequent proximal adjacent segment disease following spinal fusion in adolescent idiopathic scoliosis (AIS) and its rate has been estimated to 28% in the literature. The etiology is multifactorial, and risk factors associated with PJK are controversial. The aim of this study was to demonstrate that the disruption of muscular and bony tissue above the upper instrumented vertebra (UIV) during surgery does not increase the rate of PJK in patients undergoing posterior fusion for adolescent idiopathic scoliosis...
March 25, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28339114/cervical-length-in-patients-at-risk-for-placenta-accreta
#4
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/28333370/influence-of-nickel-titanium-rotary-systems-with-varying-tapers-on-the-biomechanical-behaviour-of-maxillary-first-premolars-under-occlusal-forces-a-finite-element-analysis-study
#5
S Askerbeyli Ors, A Serper
AIM: To evaluate the effect of three nickel-titanium (Ni-Ti) rotary systems with varying tapers on stress distribution and to analyse potential fracture patterns as well as the volume of fracture-susceptible regions in two-rooted maxillary premolars. METHODOLOGY: The root canals of three single-rooted premolars were prepared with either HeroShaper (Micro-Mega, Besançon, France) to (size 30, .04 taper), Revo-S (Micro-Mega) to AS30 (size 30, .06 taper) or ProTaper Universal (Dentsply Maillefer, Ballaigeus, Switzerland) to F3 (size 30, ...
March 23, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28323340/differential-scaling-patterns-of-vertebrae-and-the-evolution-of-neck-length-in-mammals
#6
Patrick Arnold, Eli Amson, Martin S Fischer
Almost all mammals have seven vertebrae in their cervical spines. This consistency represents one of the most prominent examples of morphological stasis in vertebrae evolution. Hence, the requirements associated with evolutionary modifications of neck length have to be met with a fixed number of vertebrae. It has not been clear whether body size influences the overall length of the cervical spine and its inner organization (i.e., if the mammalian neck is subject to allometry). Here, we provide the first large scale analysis of the scaling patterns of the cervical spine and its constituting cervical vertebrae...
March 21, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28320241/implementation-of-a-universal-cervical-length-screening-program-identifying-factors-associated-with-decline-rates
#7
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
#8
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 ≤2.5cm before 24 weeks gestation through the perinatal ultrasound database of two institutions from 2008-2014. Patients with and without cerclage were compared for a primary outcome of preterm birth at <35 weeks. A pre-planned sub-group analysis of patients with cervical length ≤1...
March 20, 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
#9
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
#10
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/28317557/the-role-of-allometry-and-posture-in-the-evolution-of-the-hominin-subaxial-cervical-spine
#11
Mikel Arlegi, Asier Gómez-Olivencia, Lou Albessard, Ignacio Martínez, Antoine Balzeau, Juan Luis Arsuaga, Ella Been
Cervical vertebrae not only protect the spinal cord but also are the insertion and origin points for muscles related to the movement of the head, upper limb, and trunk, among others, and are thus important elements in primate evolution. While previous work has been undertaken on the first two cervical vertebrae, there is a dearth of studies on the subaxial cervical spine in hominines. In this paper, we provide detailed morphological information on two important aspects of the subaxial cervical vertebrae (C3 - C7): mid-sagittal morphology and superior facet orientation...
March 2017: Journal of Human Evolution
https://www.readbyqxmd.com/read/28316950/the-effect-of-casting-ring-liner-length-and-prewetting-on-the-marginal-adaptation-and-dimensional-accuracy-of-full-crown-castings
#12
Satheesh B Haralur, Osama A Hamdi, Abdulaziz A Al-Shahrani, Sultan Alhasaniah
AIM: To evaluate the effect of varying cellulose casting ring liner length and its prewetting on the marginal adaptation and dimensional accuracy of full veneer metal castings. MATERIALS AND METHODS: The master die was milled in stainless steel to fabricate the wax pattern. Sixty wax patterns were fabricated with a uniform thickness of 1.5 mm at an occlusal surface and 1 mm axial surface, cervical width at 13.5 mm, and 10 mm cuspal height. The samples were divided into six groups (n = 10)...
January 2017: Journal of International Society of Preventive & Community Dentistry
https://www.readbyqxmd.com/read/28303276/a-parameterized-ultrasound-based-finite-element-analysis-of-the-mechanical-environment-of-pregnancy
#13
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 function 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 3-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...
March 17, 2017: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/28298044/a-novel-method-of-lengthening-the-accessory-nerve-for-direct-coaptation-during-nerve-repair-and-nerve-transfer-procedures
#14
R Shane Tubbs, Andrés A Maldonado, Yolanda Stoves, Fabian N Fries, Rong Li, Marios Loukas, Rod J Oskouian, Robert J Spinner
OBJECTIVE The accessory nerve is frequently repaired or used for nerve transfer. The length of accessory nerve available is often insufficient or marginal (under tension) for allowing direct coaptation during nerve repair or nerve transfer (neurotization), necessitating an interpositional graft. An attractive maneuver would facilitate lengthening of the accessory nerve for direct coaptation. The aim of the present study was to identify an anatomical method for such lengthening. METHODS In 20 adult cadavers, the C-2 or C-3 connections to the accessory nerve were identified medial to the sternocleidomastoid (SCM) muscle and the anatomy of the accessory nerve/cervical nerve fibers within the SCM was documented...
March 3, 2017: Journal of Neurosurgery
https://www.readbyqxmd.com/read/28297760/-promoting-effect-of-cyclin-d1-overexpression-on-proliferation-and-epithelial-mesenchymal-transition-of-cervical-squamous-cell-carcinoma-siha-cells
#15
P Wang, S Liu, B Cheng, X Z Wu, S S Ding, L Xu, Y Liu, L Duan, S Z Sun
Objective: To study effects of cyclin D1 overexpression on the proliferation and differentiation of cervical squamous cell carcinoma SiHa cells and to investigate related signaling molecules. Methods: Primers were designed to amplify the full length of cyclin D1 gene and cyclin D1 gene was amplified by PCR for constructing pcDNA3.1 plasmid vector. The construct was then transfected into SiHa cells, and the cells with stable overexpression of cyclin D1 were established, cyclin D1 gene and protein expression were detected by RT-PCR and Western blot, respectively...
March 8, 2017: Zhonghua Bing Li Xue za Zhi Chinese Journal of Pathology
https://www.readbyqxmd.com/read/28297313/a-comparison-of-organs-at-risk-doses-in-gyn-intracavitary-brachytherapy-for-different-tandem-lengths-and-bladder-volumes
#16
Zahra Siavashpour, Mahmoud Reza Aghamiri, Ramin Jaberi, Naser ZareAkha, Hamid Reza Dehghan Manshadi, Christian Kirisits, Mahbod Sedaghat
The purpose of this study was to investigate the concurrent effects of tandem length and bladder volume on dose to pelvic organs at risk (OARs) in HDR intracavitary brachytherapy treatment of cervical cancer. Twenty patients with locally advanced cervical cancer were selected for brachytherapy using Rotterdam applicators. The patients were CT scanned twice with empty and full bladder. Two treatment plans were prepared on each of the image sets. Patients were categorized into two groups; those treated with a tandem length of 4 cm or smaller (T≤4 cm) and those with tandem length larger than 4 cm (T>4 cm)...
May 2016: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/28296812/pedicled-vascularized-clavicular-graft-for-anterior-cervical-arthrodesis-cadaveric-feasibility-study-technique-description-and-case-report
#17
Michael A Bohl, Michael A Mooney, Joshua S Catapano, Kaith K Almefty, Mark C Preul, Steve W Chang, U Kumar Kakarla, Edward M Reece, Jay D Turner, Randall W Porter
STUDY DESIGN: Cadaveric feasibility study. OBJECTIVES: To assess the anatomic and technical feasibility of rotating a clavicular segment on a sternocleidomastoid muscle (SCM) pedicle into the ventral cervical spine using a cadaveric model and to provide the first clinical case description of performing this procedure. SUMMARY OF BACKGROUND DATA: Reconstruction of the anterior cervical spine in patients with a high risk of pseudoarthrosis may require the use of a vascularized bone graft (VBG)...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28295801/cervical-length-measurement-at-mid-gestation-to-predict-spontaneous-preterm-birth-in-asymptomatic-triplet-pregnancies
#18
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
#19
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
#20
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
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