Abstract:
OBJECTIVE:This study was designed to determine the range of normal fetal nasal width by ultrasonography, which may be beneficial for detection of trisomy 21 and other chromosomal abnormalities. We hypothesize that a wide, saddle-shaped nose, which is one of the clinical neonatal anatomic features of trisomy 21, can be diagnosed prenatally. STUDY DESIGN:Fetal nasal width diameter was measured on 782 normal white fetuses by ultrasonography. Gestational ages ranged from 13.8 to 40.4 weeks. Mean and SD of fetal width diameter was calculated weekly by gestational age to establish normal values. RESULTS:The fetal nasal width increased as a function of gestational age, showing a polynomial curve during pregnancy (r = 0.912, p = 0.002). With use of mean +/- 1 SD as a cutoff value, the results showed a sensitivity of 80% with a specificity of 67% and a positive predictive value of 2.2% with a negative predictive value of 99.7% for the diagnosis of trisomy 21. CONCLUSION:The fetal nasal width diameter may be used as a biometric measurement and may be useful to identify trisomy 21 or other chromosomal abnormalities in conjunction with other already defined parameters used in a genetic ultrasonographic screen.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Pinette MG,Blackstone J,Pan Y,Pinette SGdoi
10.1016/s0002-9378(97)70279-5subject
Has Abstractpub_date
1997-10-01 00:00:00pages
842-5issue
4eissn
0002-9378issn
1097-6868pii
S0002-9378(97)70279-5journal_volume
177pub_type
杂志文章abstract:OBJECTIVE:This study was undertaken to establish the optimal threshold of birth weight discordance for prediction of adverse outcome in liveborn, non-malformed preterm twins. STUDY DESIGN:We accessed a cohort of twin gestations for the period 1990 through 2000 delivered at less than 37.0 weeks' gestation. Adverse neon...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.05.053
更新日期:2004-10-01 00:00:00
abstract::Normal fetal growth is a critical component of a healthy pregnancy and influences the long-term health of the offspring. However, defining normal and abnormal fetal growth has been a long-standing challenge in clinical practice and research. We review various references and standards that are used widely to evaluate f...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2009.10.889
更新日期:2010-06-01 00:00:00
abstract::The term microinvasive carcinoma is inappropriate when applied to all vulvar cancers less than or equal to 5 mm thick because approximately 50% of vulvar carcinomas are no thicker than 5 mm and 20% of those superficial tumors metastasize to the lymph nodes. The significant predictors of groin node metastases in patien...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(87)90132-3
更新日期:1987-05-01 00:00:00
abstract::One of the compensatory hemodynamic mechanisms seen in the anemic human fetus is an increased cardiac output. With Doppler techniques, cardiac output was measured in 21 fetuses before and immediately after 38 intrauterine transfusions for severe red cell alloimmunization. Umbilical venous pressures were measured befor...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)91067-m
更新日期:1990-09-01 00:00:00
abstract:OBJECTIVE:We determined developmental and labor-related changes in 11beta-hydroxysteroid (HSD) 1 and 2 expression in baboon placentas during the final third of gestation and labor. We examined whether maternal glucocorticoid administration alters placental 11beta-HSD 2 expression. STUDY DESIGN:Maternal and fetal plasm...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2003.62
更新日期:2003-01-01 00:00:00
abstract::SAA and SIA were assayed in the sera of 172 infertile couples and in the CM of the women and 18 control subjects. Complete infertility evaluation was performed in all subjects except the controls. Results of these studies were correlated with PCT's. Sperm antibodies were detected in the CM of 25.6% of infertile women ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1980-04-01 00:00:00
abstract:OBJECTIVE:Water absorption across the fetal chorioamniotic membranes is a critical regulatory pathway for amniotic fluid volume homeostasis. Aquaporins are cell membrane proteins that significantly enhance membrane permeability to water by acting as water channels. We recently demonstrated that aquaporin 8 is expressed...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2003.214
更新日期:2003-04-01 00:00:00
abstract:OBJECTIVE:This study was designed to determine the intraobserver and interobserver variability in the visual assessment of fetal heart rate tracings and to evaluate the accuracy of the visual detection of accelerations and decelerations when compared with computerized fetal heart rate analysis. STUDY DESIGN:One hundre...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(12)90831-5
更新日期:1993-03-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to assess the influence of maternal age on obstetric indices of uterine efficiency in spontaneous nulliparous labor managed according to a standardized protocol in order to determine whether increasing maternal age is more commonly associated with dystocia. STUDY DESIGN:Informat...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2006.05.052
更新日期:2006-09-01 00:00:00
abstract:BACKGROUND:Adverse maternal outcomes associated with chronic hypertension include accelerated hypertension and resultant target organ damage. One example is long-standing hypertension leading to maternal cardiac dysfunction. Our group has previously identified that features of such injury manifest as cardiac remodeling...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2018.02.015
更新日期:2018-05-01 00:00:00
abstract::Placental steroid sulfatase deficiency is an unusual cause of low estriol production during pregnancy. Its importance lies in the differentiation of this disorder from the more ominous fetal defects that result in low estriol levels. Serum free estriol levels were found to be low or absent in a 25-year-old gravida 3, ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90526-3
更新日期:1976-11-15 00:00:00
abstract::Research on women at risk for breast cancer because of family history suggests that a substantial proportion need education and counseling to assist them in their efforts to understand their risk of breast cancer and that some do not get appropriate breast cancer screening. Although women at high genetic risk for brea...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/s0002-9378(03)01078-0
更新日期:2003-10-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to assess the involvement of rho kinase (ROK) in agonist-dependent contraction of omental, myometrial, and placental arteries of pregnant women at term. STUDY DESIGN:Wire myography was used to assess if contractions of intact or alpha-toxin-permeabilized arteries obtained from w...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2005.02.076
更新日期:2005-09-01 00:00:00
abstract:OBJECTIVE:In a seroepidemiologic study the effects of pregnancy and other factors on humoral response to human papillomavirus type 16 infection were examined. STUDY DESIGN:Multiple serum samples were taken at 3-month intervals for 15 months from 77 pregnant and 85 nonpregnant women. Serologic response to human papillo...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(98)80026-4
更新日期:1998-02-01 00:00:00
abstract:OBJECTIVE:This study was undertaken to compare the birth outcomes of a multifetal pregnancy reduction population with those of other patients delivered at Hutzel Hospital, Detroit, and to determine the fiscal impact of the multifetal pregnancy reduction program. STUDY DESIGN:In a retrospective review patients who were...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2000.106856
更新日期:2000-06-01 00:00:00
abstract::Fifty-five patients with Stage IB adenocarcinoma of the cervix were treated by radical hysterectomy and pelvic lymphadenectomy from 1965 through 1985. Bleeding was the presenting symptom in 56% of the patients. Twenty patients underwent cone biopsy for diagnostic purposes and 70% had residual carcinoma at the time of ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(89)90877-6
更新日期:1989-06-01 00:00:00
abstract::To determine whether abnormalities of the androgen receptor previously observed in skin fibroblasts from patients with androgen insensitivity syndrome also occur in the gonads of affected individuals, androgen receptor activity in the gonads of a patient with testicular feminization syndrome was investigated. Using co...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(84)90434-4
更新日期:1984-11-01 00:00:00
abstract:OBJECTIVE:This study investigates the association of allelic variation in angiogenic pathway genes and preeclampsia. STUDY DESIGN:Data for cases with preeclampsia and term control subjects were collected prospectively. Maternal DNA was extracted, and 124 tagging single nucleotide polymorphisms in 6 genes (vascular end...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2010.01.040
更新日期:2010-05-01 00:00:00
abstract::The purpose of this review was to estimate the impact of timing of seasonal influenza vaccination during pregnancy on health and economic outcomes. Cost-effectiveness analysis with a dynamic model of the US population of pregnant women and infants who were <6 months incorporated seasonal variation in influenza inciden...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2011.04.009
更新日期:2011-06-01 00:00:00
abstract:OBJECTIVES:Extraperitoneal approaches to removal of lymph nodes for staging in cervical cancer patients are numerous, and each has disadvantages. We developed a supraumbilical transverse incision to initiate irradiation within days of cervical cancer staging. STUDY DESIGN:Twenty patients with advanced stage IIB or III...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(93)90080-3
更新日期:1993-08-01 00:00:00
abstract:OBJECTIVE:Acardiac/acephalic twinning is a rare anomaly in which a normal "pump" twin perfuses an acardiac twin, which results in twin reversed arterial perfusion sequence. A novel technique for selective reduction and obliteration of blood flow in the acardiac twin is described. STUDY DESIGN:Thirteen consecutive case...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2002.125242
更新日期:2002-09-01 00:00:00
abstract::Although the fetus is considered to be an "allograft" there is little information concerning the role of lymphokines in human pregnancy. Lymphokines are polypeptides secreted by stimulated lymphocytes that direct the immune response by enabling immune effector cells to communicate with each other. To characterize lymp...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)90769-4
更新日期:1990-12-01 00:00:00
abstract::Three cases of persistent urinary incontinence from unrecognized small vesicovaginal fistula after abdominal hysterectomy for benign gynecologic disease are presented. Visualization of urine in the posterior fornix was suggestive; diagnosis was confirmed by methylene blue test and cystoscopy. Two patients had undergon...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90129-9
更新日期:1988-02-01 00:00:00
abstract::Thirteen women with infertility thought due to anovulation were treated with LRH. Etiologic diagnoses of amenorrhea included hypothalamic or "idiopathic" and PCOD. All patients had normal gonadotropins and otherwise normal endocrinologic and infertility evaluations; none had ovulated with clomiphene. Patients were stu...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章
doi:10.1016/0002-9378(79)90819-6
更新日期:1979-12-01 00:00:00
abstract:OBJECTIVE:We sought to establish the effect of maternal smoking on placental volume and vascularization in early gestation. STUDY DESIGN:Three-dimensional power Doppler ultrasonography of the placenta was performed at 11+0 to 13+6 weeks in 80 pregnancies categorized according to cigarette consumption: group A never sm...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2008.10.041
更新日期:2009-04-01 00:00:00
abstract::We studied the relationship of amniotic fluid bacterial inhibition in 50 patients with intra-amniotic infection to that in 50 matched control patients. Amniotic fluid was collected through a transcervical intrauterine catheter. All infected patients had clinical signs of intra-amniotic infection and greater than or eq...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(82)90004-7
更新日期:1982-08-01 00:00:00
abstract:OBJECTIVE:Lipopolysaccharide pretreatment potentiates hypoxic ischemic injury. We hypothesized that docosahexaenoic acid pretreatment would improve function and reduce brain volume loss in this rat model of perinatal brain injury and inflammation. STUDY DESIGN:Seven-day-old rats were divided into 3 groups: intraperito...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2010.01.076
更新日期:2010-05-01 00:00:00
abstract:BACKGROUND:While there is an increasing trend of ovarian conservation at the time of surgical treatment for young women with stage I cervical cancer, the risk for subsequent ovarian cancer after ovarian conservation has not been well studied. OBJECTIVE:We sought to examine the incidence of and risk factors for metachr...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2017.06.019
更新日期:2017-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the fetal response to submaximal maternal exercise at 22 to 26 weeks in pregnancies with abnormal uterine artery Doppler. STUDY DESIGN:This was a prospective comparison of singleton pregnancies with uteroplacental vascular insufficiency (UPVI) (mean uterine pulsatil...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2005.06.035
更新日期:2005-09-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the cerebral, circulatory, and metabolic responses of the ovine fetus near term to umbilical cord compression with variable-type fetal heart rate decelerations. STUDY DESIGN:Nine fetal sheep, at 0.9 of gestation, were studied before, during, and after umbilical cord...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(96)80027-5
更新日期:1996-10-01 00:00:00