Abstract:
OBJECTIVE:The purpose of this study was to assess the role of fetal nasal bones evaluation in first-trimester screening for trisomy 21 in selected and unselected pregnancies. STUDY DESIGN:Visualization of the nasal bones was attempted in women attending for routine nuchal translucency screening (unselected population, n = 7116, 12 cases of trisomy 21), as well as in high-risk pregnancies referred to our tertiary care center (selected population, n = 510, 23 cases of trisomy 21). RESULTS:The sensitivity, specificity, positive and negative predictive value of absent nasal bones for trisomy 21 were 16.7%, 97.3%, 1.1%, 99.8% and 47.6%, 95.3%, 33.3%, 97.4% in the unselected and selected population, respectively. At logistic regression analysis including nuchal translucency and nasal bones findings, the latter resulted to be an independent predictor of trisomy 21 in the selected but not in the unselected population. CONCLUSION:First-trimester nasal bones assessment for trisomy 21 screening has a very different performance in selected and unselected pregnancies.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Prefumo F,Sairam S,Bhide A,Thilaganathan Bdoi
10.1016/j.ajog.2005.09.008subject
Has Abstractpub_date
2006-03-01 00:00:00pages
828-33issue
3eissn
0002-9378issn
1097-6868pii
S0002-9378(05)01464-Xjournal_volume
194pub_type
杂志文章abstract::A technique to assist in the atraumatic delivery of the very low birth weight fetus in cases of malpresentation at cesarean section is described; the technique minimizes potential trauma associated with version and/or extraction techniques. Use of uterine relaxing anesthetic agents and subsequent risk of hemorrhage ar...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(86)90492-8
更新日期:1986-04-01 00:00:00
abstract:OBJECTIVE:This study was undertaken to determine whether the neonatal benefit of a single complete course of antenatal corticosteroids diminishes when delivery is remote from administration (> 14 days). STUDY DESIGN:This retrospective 2 center cohort trial included women who received a single complete course of antena...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ajog.2006.12.018
更新日期:2007-05-01 00:00:00
abstract::The effect of obesity alone was investigated among 16,858 women who were delivered of their infants within a 12-month period. Complete analysis was possible for 9667 patients who were divided into four weight categories and separated into two groups, with and without complications. Perinatal mortality, infant size, an...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(85)80029-6
更新日期:1985-05-15 00:00:00
abstract::All but three of the 270 women surviving eclampsia at the Margaret Hague Maternity Hospital in the period 1931 through 1951 were traced to 1973-74. Seventy-six have died and 13 were not re-examined. In white women having eclampsia in the first pregnancy carried to viability the remote mortality rate is not increased o...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90168-x
更新日期:1976-03-01 00:00:00
abstract::To assess the possible mechanism for the increased incidence and severity of the respiratory distress syndrome (RDS) in male versus female infants, we studied neurosympathetic development in the lung and adrenal glands in male and female fetal and newborn rabbits. Tissue levels of catecholamines, norepinephrine (NE), ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(16)32593-5
更新日期:1981-09-15 00:00:00
abstract:OBJECTIVES:This study was undertaken to determine whether tissue-specific defensins are expressed within female reproductive tissues. STUDY DESIGN:Messenger ribonucleic acid from amnion, chorion, endometrium, endocervix, myometrium, placenta, small intestine, peripheral blood lymphocytes, and cervical, endometrial, an...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(97)70517-9
更新日期:1997-02-01 00:00:00
abstract:OBJECTIVE:We studied the effect of long-term heparin treatment on bone mass during pregnancy. STUDY DESIGN:Thromboprophylaxis with heparin was given to 39 women during pregnancy for a mean of 28 weeks and for an average of 6 weeks post partum. Bone mineral density measured with single-photon absorptiometry of the dist...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(94)70149-0
更新日期:1994-05-01 00:00:00
abstract::Primary prevention of sexually transmitted diseases has received little emphasis in control programs. To evaluate the effectiveness of prevention strategies, we reviewed the world's literature on this topic. Use of condoms and spermicides greatly reduces the risk of gonorrhea, and barrier methods are practical and acc...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章,评审
doi:10.1016/0002-9378(86)90108-0
更新日期:1986-07-01 00:00:00
abstract::Previously endovaginal ultrasonography was considered an adjunct for use in full-service ultrasound facilities by subspecialists only. The technique, however, has tremendous application for use by the clinician in the examination room for patients at bimanual examination. This is because the procedure is meant to be p...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)90971-9
更新日期:1990-03-01 00:00:00
abstract:OBJECTIVE:There has been a gradual shift of the focus of prenatal diagnosis from genetics to ultrasonography. We assessed our primary genetics approach to determine what would be missed without the genetics component. STUDY DESIGN:We evaluated referral indications for patients with normal and abnormal prenatal finding...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(96)70230-2
更新日期:1996-06-01 00:00:00
abstract::Oral contraceptives (OCs) raise the plasma levels of some clotting factors, especially factor VII. Until recently, however, there has been no evidence for a relationship between high levels of clotting factor and the onset of clinically manifest vascular disease. It has not been established, on a preliminary basis, th...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(16)32484-x
更新日期:1982-03-15 00:00:00
abstract::In Western culture, the ethical principles of respect for persons can be further divided into 2 categories - a) autonomy and b) protection of the vulnerable; beneficence; and justice. The principles of ethics can be directed towards 2 levels: microethics - concerned with the individual and macroethics - concerned w...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)91287-m
更新日期:1990-04-01 00:00:00
abstract::The obstetric events leading to the birth of infants who developed respiratory distress syndrome (RDS) were evaluated. In a retrospective study of 100 consecutive cases it was determined that untimely or unwarranted physician intervention in the pregnancy was responsible for 15 per cent of cases and possibly responsib...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1975-11-15 00:00:00
abstract:OBJECTIVE:We compared localization of human immunodeficiency virus type 1 within human placentas infected in utero with localization within human placental explants infected in vitro. STUDY DESIGN:Placental tissues from 3 cases of vertical transmission of human immunodeficiency virus type 1 were studied. Human placent...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(00)70514-x
更新日期:2000-01-01 00:00:00
abstract::Fetal outcome in 98 patients with spontaneous antepartum late decelerations was studied by combining the data of two obstetric departments. Heart rate variability was used to classify the different patterns into two categories: terminal and decelerative. In 14 of the 47 pregnancies in which a terminal pattern was foun...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(80)90141-6
更新日期:1980-10-15 00:00:00
abstract::Oxytocin concentrations were determined in baboon (Papio anubis) corpora lutea, and the effect of oxytocin on dispersed luteal cell progesterone production was evaluated. Oxytocin concentrations increased significantly from an early luteal phase value of 2.1 +/- 1.1 ng/gm to a peak concentration of 18.1 +/- 4.3 ng/gm ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90089-0
更新日期:1988-04-01 00:00:00
abstract:OBJECTIVE:We sought to assess blood flow in relation to jugular lymphatic distension in fetuses with increased and normal nuchal translucency (NT). STUDY DESIGN:In all, 72 fetuses with normal NT and 71 fetuses with NT >95th percentile were evaluated. NT size, jugular lymphatic sacs (JLS), jugular vein and ductus venos...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2010.01.054
更新日期:2010-06-01 00:00:00
abstract:OBJECTIVE:Thrombin is a potent uterotonic agent that may play an important role in human parturition. FGL2 is a prothrombinase that cleaves prothrombin to thrombin. The purpose of this study was to determine FGL2 messenger RNA expression in human myometrium and to assess its relationship to the expression of EP3-6 pros...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2003.248
更新日期:2003-04-01 00:00:00
abstract:OBJECTIVE:We compared preoperative and intraoperative assessments of pelvic organ prolapse to ascertain whether differences existed. STUDY DESIGN:This study is a retrospective analysis of information that was collected of 193 women who underwent reconstructive operation for pelvic organ prolapse between January 1994 a...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2002.122985
更新日期:2002-06-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to determine, with the use of a rat model, the expression of tumor necrosis factor (TNF)-alpha, its receptors, and TNF-alpha-converting enzyme in perinatal brain lesions of early premature neonates. STUDY DESIGN:Lipopolysaccharide (LPS) was injected intraperitoneally in pregnant rat...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2009.06.005
更新日期:2009-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to assess the usefulness of a new platelet function analyzer in the detection of von Willebrand disease and platelet dysfunction in women with menorrhagia. STUDY DESIGN:Women with menorrhagia and control subjects were tested with a platelet function analyzer. If the results were...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.03.009
更新日期:2004-08-01 00:00:00
abstract::A brief review of the evidence for and against the 12-week gestational age limit for abortion by curettage is reported. Existing data suggest that second trimester evacuation abortion is associated with higher morbidity and mortality rates than first trimester suction curettage, but with lower rates than second trime...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(78)90925-0
更新日期:1978-09-15 00:00:00
abstract:OBJECTIVE:The purpose of this study was to test the hypothesis that infusion of the oxytocin antagonist atosiban results in decreased preterm uterine activity in the human. STUDY DESIGN:A randomized, double-blind, placebo-controlled trial was performed. One hundred twenty women from 20 to 36 weeks' gestation with a co...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/s0002-9378(94)70214-4
更新日期:1994-02-01 00:00:00
abstract:OBJECTIVE:Our purpose was to evaluate in a sheep model for endoscopic fetal surgery the impact of nitrous oxide-gas amniodistention compared with fluid amniodistention on duration of surgery, hemorrhagic events, and fetomaternal acid-base status. STUDY DESIGN:Pregnant ewes (n = 16) at 92 to 104 days of gestation (term...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2002.120482
更新日期:2002-03-01 00:00:00
abstract:OBJECTIVE:We sought to compare bony pelvis dimensions at the level of pelvic support in women with and without pelvic organ prolapse (POP). STUDY DESIGN:Pelvic floor dimensions of 42 white women with POP > 1 cm beyond the hymen were compared with 42 age- and parity-matched women with normal support. Bony landmarks rel...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2008.10.040
更新日期:2009-03-01 00:00:00
abstract::The diagnosis of polycystic ovary syndrome (PCOS) is primarily achieved through clinical history and physical findings. The principle features are hirsutism or biochemical evidence of excess androgen production and irregular menstrual bleeding caused by the chronic anovulation. Associated findings include insulin resi...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2004.04.045
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:In preterm labor increased concentrations of interleukin-1 and tumor necrosis factor are present in amniotic fluid. These cytokines may promote labor by stimulating the production of prostaglandins by intrauterine tissues. In many biologic processes, transforming growth factor-beta modifies the actions of cyt...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(11)91662-7
更新日期:1992-07-01 00:00:00
abstract:OBJECTIVES:In the present study, we evaluated functional activity of monocytes in experimental preeclampsia induced by low-dose endotoxin infusion. STUDY DESIGN:Pregnant (n = 12) and cyclic rats (n = 12) were equipped with a permanent jugular vein cannula and infused with either low-dose endotoxin or saline. One day b...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.03.041
更新日期:2004-10-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the effect of preterm premature rupture of the membranes on the frequency of respiratory distress syndrome among singleton pregnancies that are complicated with preterm delivery. STUDY DESIGN:We performed a retrospective analysis of singleton pregnancies that were de...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2002.126203
更新日期:2002-08-01 00:00:00
abstract::Analysis of uncultured chorionic villus material from a woman at risk of fetus with sulfite oxidase deficiency revealed a deficiency of sulfite oxidase. This was confirmed on termination of the pregnancy. ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)90691-y
更新日期:1990-10-01 00:00:00