Abstract：
OBJECTIVE:The purpose of this study was to determine whether x-ray measures of the mid pelvis can be used to predict cesarean delivery. STUDY DESIGN:Women were enrolled prospectively; x-ray pelvimetry was performed after delivery; the readers were blinded to the outcome. Groups were determined by mid pelvis measures (transverse diameter, anteroposterior diameter, and circumference ≤ 10th percentile. The primary outcome was cesarean delivery. Univariable, stratified, and multivariable analyses were performed to estimate the effect of mid pelvis measures on cesarean delivery. Receiver operator characteristics curves were created to estimate the predictive value of mid pelvis measures of cesarean delivery. RESULTS:Four hundred twenty-six women were included. Subjects with anteroposterior diameter or circumference ≤ 10th percentile were at greater risk of cesarean delivery (risk ratio for anteroposterior diameter, 4.8; 95% confidence interval, 3.9-5.8; risk ratio for circumference ≤ 10th percentile, 3.8; 95% confidence interval, 3.1-4.8). Transverse diameter ≤ 10th percentile was not associated with an increased risk of cesarean delivery. The area under the receiver operator characteristics curves for anteroposterior diameter, circumference ≤ 10th percentile, and transverse diameter were 0.88, 0.85, and 0.69, respectively (P < .01). CONCLUSION:Simple radiographic measures of the mid pelvis on x-ray can provide a useful adjunct to clinical information in the determination of who should attempt a vaginal delivery.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Harper LM,Odibo AO,Stamilio DM,Macones GAdoi
10.1016/j.ajog.2013.02.050subject
Has Abstractpub_date
2013-06-01 00:00:00pages
460.e1-6issue
6eissn
0002-9378issn
1097-6868pii
S0002-9378(13)00245-7journal_volume
208pub_type
杂志文章,多中心研究abstract：OBJECTIVE:The purpose of this study was to determine whether quantification of cervicovaginal fluid fetal fibronectin (fFN) improves diagnostic accuracy of spontaneous preterm birth (sPTB) in symptomatic women. STUDY DESIGN:A prospective blinded predefined secondary analysis of a larger study of cervicovaginal fluid f...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2012.10.890
更新日期：2013-02-01 00:00:00
abstract：:Maternal, fetal, and neonatal results and complications were analyzed after 923 genetic amniocenteses. Maternal age of 35 years and beyond was associated with a 2.0% risk of fetal trisomy 21 and a 3.0% risk of all major chromosome abnormalities. Comparable rates for women aged 40 and beyond were 4.8% and 7.2%. Neural ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1983-05-15 00:00:00
abstract：:Two types of fibrous structures can be demonstrated in midcycle cervical mucus: (1) long, thick fibers that vary in diameter from 0.5 to 5 mum and run parallel to each other, and (2) microfibrils that vary in diameter from 500 to 1,500 A and form bundles or networks. The spaces in such networks usually measure from 8...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90065-4
更新日期：1975-07-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to evaluate whether maternal tobacco use is associated with an attenuation in fetal birthweight among women with nutritional and uteroplacental constraints. STUDY DESIGN:A population-based retrospective analysis of term (37 weeks or longer) singleton pregnancies delivered in Ut...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2007.06.078
更新日期：2008-01-01 00:00:00
abstract：OBJECTIVE:To test the hypothesis that amniotic fluid volume is increased in aquaporin 1 knockout mice. STUDY DESIGN:Transgenic mice deficient in aquaporin 1 protein were generated by targeted gene disruption, as described previously. After a cesarean section was performed, intact, individual gestational sacs were remo...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2005.02.046
更新日期：2005-06-01 00:00:00
abstract：OBJECTIVE:We hypothesized that body composition would be similar among neonates of women with gestational diabetes (GDM) treated with glyburide or insulin. STUDY DESIGN:Women with GDM requiring medical therapy were randomized to insulin or glyburide. The primary outcome was percent neonatal fat mass measured by total ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajog.2009.02.038
更新日期：2009-05-01 00:00:00
abstract：OBJECTIVE:We sought to determine whether sacrospinous uterosacral ligament fixation restores the uterus to its normal anatomic position, preserving uterine function and allowing future childbearing. STUDY DESIGN:This study was undertaken at two separate medical centers. Women with symptomatic uterovaginal prolapse who...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(93)90689-g
更新日期：1993-06-01 00:00:00
abstract：:Pre-eclampsia is characterized by uteroplacental ischemia. Prostaglandins can alter systemic blood pressure as well as regulate blood flow to the fetoplacental unit. In the present study, levels of prostaglandin E were significantly decreased in placental tissue from pre-eclamptic patients. Prostaglandin F, a potent v...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(76)90478-6
更新日期：1976-09-01 00:00:00
abstract：:The kinetics of prostaglandins instilled vaginally has been studied in the maternal and fetal circulations, with observation of changes in the stable prostaglandin E2 metabolite 11-deoxy-13,14-dihydro-15-keto-11 beta,16-cyclo-prostaglandin E2. After the administration of prostaglandin E2, 10 mg in a wax-based pessary,...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90752-7
更新日期：1989-10-01 00:00:00
abstract：OBJECTIVE:Studies in animals and human muscle have demonstrated differential splicing of the insulin-like growth factor-1 gene in response to mechanical strain and damage. We conducted a study on the expression of insulin-like growth factor-1 splice variants in the levator ani muscle after the first vaginal delivery. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.12.088
更新日期：2005-07-01 00:00:00
abstract：:The purpose of this study was to determine the activity and toxicity of hexamethylmelamine chemotherapy in patients with persistent or recurrent epithelial ovarian cancer. Forty-nine women received hexamethylmelamine 100 to 150 mg/day for 14 days, repeated at 4-week intervals. All patients had previously received at l...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/0002-9378(91)90287-2
更新日期：1991-09-01 00:00:00
abstract：OBJECTIVES:This study was carried out to determine the distribution of maternal-fetal medicine (MFM) subspecialists and to profile MFM subspecialists' (1) target patient populations, (2) practice organization, (3) workloads, (4) services provided, and (5) job satisfaction. STUDY DESIGN:The membership of the Society fo...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.119719
更新日期：2001-11-01 00:00:00
abstract：OBJECTIVE:To compare the risk of fetal death (FD) between 34 and 41 weeks' gestational age (GA) with the neonatal mortality rate to examine the best GA for delivery. STUDY DESIGN:Linked birth and infant death data for the US from the National Center for Health Statistics analyzed nonanomalous singleton pregnancies bet...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2012.12.005
更新日期：2013-03-01 00:00:00
abstract：OBJECTIVE:We wanted to test whether the recently described method of using the transferrin receptor system for fluorescence-activated cell-sorter enrichment of nucleated red blood cells can be used for prenatal diagnosis from maternal blood. STUDY DESIGN:Instead of the laborious, expensive fluorescence-activated cell-...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(92)91603-8
更新日期：1992-05-01 00:00:00
abstract：OBJECTIVE:We evaluated whether women with vulvar vestibulitis syndrome (VVS) could be subdivided on the basis of genotyping the polymorphic mannose-binding lectin (MBL) gene. STUDY DESIGN:DNA from 123 women with VVS was tested for a single nucleotide polymorphism at codon 54 of the MBL gene. Blood samples from 86 of t...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2007.05.037
更新日期：2008-01-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to describe the anatomic and functional results of the discrete fascial defect rectocele repair. STUDY DESIGN:Sixty-nine women underwent rectocele repair at Duke University Medical Center during a 3-year period beginning January 1, 1994. Repair was limited to reapproximation of disc...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(98)70009-2
更新日期：1998-12-01 00:00:00
abstract：:Virilization in pregnancy has been reported with various ovarian neoplasms. Presented is a case of maternal virilization resulting from an unclassified sex-cord stromal neoplasm. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(85)90627-1
更新日期：1985-07-01 00:00:00
abstract：:An attempt is made to define the quality of life in terms of the patient with gynecologic cancer. The effect of the diagnosis of cancer and its recurrence or its terminal state on the quality of life is considered. Possible methods of assessing the patient's individual feelings about the quality of her life are review...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(79)90857-3
更新日期：1979-08-15 00:00:00
abstract：OBJECTIVE:This study was undertaken to address the role of oxidative stress in preeclampsia. STUDY DESIGN:We measured urinary 8,12-iso-iPF(2alpha)-VI, a chemically stable, free-radical catalyzed product, in a case control study of severe preeclampsia nested within the trial of Calcium for Preeclampsia Prevention. Case...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.116754
更新日期：2001-09-01 00:00:00
abstract：OBJECTIVE:We sought to determine the long-term efficacy, safety, and urodynamic effects of the Mersilene mesh suburethral sling in treating complicated forms of genuine stress incontinence. STUDY DESIGN:Two hundred women diagnosed with genuine stress incontinence, complicated by recurrence, intrinsic sphincter deficie...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1067/mob.2001.116370
更新日期：2001-07-01 00:00:00
abstract：OBJECTIVES:Our purpose was to investigate (1) whether uterine relaxation responses to calcitonin gene-related peptide are differentially regulated during pregnancy and labor, (2) the involvement of nitric oxide in smooth muscle relaxant action of calcitonin gene-related peptide in the rat uterus, (3) whether receptors ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(98)70386-2
更新日期：1998-08-01 00:00:00
abstract：OBJECTIVE:The amount of bone mass and the tendency to fall are main risk factors for hip fractures and both deteriorate with advancing age. The dynamics between estrogen exposure and fracture protection seem too rapid to be explained by an effect on bone mass only. Postural balance function may be another potential mec...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70207-2
更新日期：1997-08-01 00:00:00
abstract：:The placenta is a highly metabolically active organ fulfilling the bioenergetic and biosynthetic needs to support its own rapid growth and that of the fetus. Placental metabolic dysfunction is a common occurrence in preeclampsia although its causal relationship to the pathophysiology is unclear. At the outset, this ma...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2020.11.005
更新日期：2020-11-13 00:00:00
abstract：:Trichomonas vaginalis isolates were obtained in the United States from three women with trichomoniasis refractory to routine treatment with metronidazole. Cure was obtained in these cases with increased dosage of metronidazole. In experimental mouse infections, all three strains showed a significantly (about 10 to 20 ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)32741-7
更新日期：1980-12-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to examine the presence and frequency of antegrade late diastolic arterial blood flow (ALDAF) in the fetus and to determine its contribution to cardiac output. STUDY DESIGN:We evaluated the presence of ALDAF in 457 fetal and 21 postnatal echocardiograms. The timing of ALDAF to t...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2013.02.053
更新日期：2013-06-01 00:00:00
abstract：OBJECTIVE:Our purpose was to study whether cardiovascular changes in pregnancy-induced hypertension are associated with the increase in sympathetic control of hemodynamics and change in sympathovagal balance. STUDY DESIGN:Fourteen women with pregnancy-induced hypertension and 16 women with uncomplicated pregnancies of...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70041-3
更新日期：1997-11-01 00:00:00
abstract：OBJECTIVE:We sought to determine if uterine tachysystole, ≥ 6 contractions per 10 minutes, within the first 4 hours of labor induction, is associated with adverse infant outcomes. STUDY DESIGN:This was a prospective cohort study of 584 women ≥ 37 weeks' gestation undergoing induction of labor with 100 μg of oral misop...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2012.07.032
更新日期：2012-10-01 00:00:00
abstract：OBJECTIVE:Fasting during pregnancy stimulates preterm delivery in animals and increases women's risk for preterm delivery. Fasting stimulates hypothalamic corticotropin-releasing hormone production in animals. Elevated maternal corticotropin-releasing hormone concentrations are associated with preterm birth. We hypothe...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.115863
更新日期：2001-08-01 00:00:00
abstract：:Two 46,XX true hermaphrodites with genital ambiguity since birth and gynecomastia were studied. The production rates of estradiol in these subjects, 77 and 71 microgram per 24 hours, and of estrone, 82 and 136 microgram per 24 hours, were approximately twice those of normal adult men. In one of these subjects the plas...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(78)90775-5
更新日期：1978-10-15 00:00:00
abstract：:This document builds upon recommendations from peer organizations and outlines a process for identifying maternal cases that should be reviewed. Severe maternal morbidity is associated with a high rate of preventability, similar to that of maternal mortality. It also can be considered a near miss for maternal mortalit...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2016.07.050
更新日期：2016-09-01 00:00:00
