Abstract：
OBJECTIVES:To describe birth-weight-for-gestational-age patterns by race, sex, and parity in the United States population, and to discuss the measurements of gestational age by different methods, the pitfalls of each method, and the potential effects of the errors on birth-weight-for-gestational-age curves. METHODS:We used the computerized certificates of live births from the entire population in 1989, consisting of more than four million infants born to residents of the United States. Gestational age was based on the date of the last menstrual period (LMP) modified by the clinical estimate in those situations in which normal distribution of birth weight does not apply. Birth weights for the tenth, 25th, 50th, 75th, and 90th percentiles were calculated by each gestational age and by race, sex, and parity. RESULTS:Eight sets of smoothed birth-weight-for-gestational-age curves were created for black-white, male-female, and primipara-multipara comparisons in sequence. Compared with previous major curves, our curves were closer to those in which the gestational age was derived from the LMP. There were marked differences observed between our curves and those in which the gestational age was based on ultrasound estimation. CONCLUSION:In the measurement of gestational age, the LMP may produce misclassification of gestational age, thereby elevating birth weight percentiles in preterm births and lowering birth weight percentiles in postterm births. However, ultrasound estimation is likely to create a differential misclassification of gestational age, which exerts the opposite effect of lowering birth weight percentiles early in gestation and increasing the percentiles late in gestation.
journal_name
Obstet Gynecoljournal_title
Obstetrics and gynecologyauthors
Zhang J,Bowes WA Jrdoi
10.1016/0029-7844(95)00142-esubject
Has Abstractpub_date
1995-08-01 00:00:00pages
200-8issue
2eissn
0029-7844issn
1873-233Xpii
002978449500142Ejournal_volume
86pub_type
杂志文章abstract：BACKGROUND:Erythrasma is an uncommon vulvar infection, best diagnosed by its fluorescence under the Wood lamp. This report shows that despite a negative Wood lamp examination, the diagnosis can be made histologically. CASE:A 42-year-old woman was referred to our clinic with a persistent candidal infection. Evaluation ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1993-05-01 00:00:00
abstract：OBJECTIVES:The secreted form of ADAM12 is a metalloprotease that may be involved in placental and fetal growth. We examined whether the concentration of ADAM12 in first-trimester maternal serum could be used as a marker for preeclampsia. METHODS:We developed a semiautomated, time-resolved, immunofluorometric assay for...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/01.AOG.0000165829.65319.65
更新日期：2005-07-01 00:00:00
abstract：OBJECTIVE:To identify smartphone menstrual cycle tracking applications (apps) and evaluate their accuracy, features, and functionality. METHODS:In this systematic evaluation, we searched the Apple iTunes store for free menstrual cycle tracking apps for patient use. We considered an application accurate if menstrual cy...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0000000000001444
更新日期：2016-06-01 00:00:00
abstract：:Malignant mixed müllerian tumors of the uterus are rare neoplasms occurring predominantly in postmenopausal women. We report the prenatal course and diagnosis of a stage III malignant mixed müllerian tumor at cesarean section in a 35-year-old woman. Despite aggressive radiation and chemotherapy, the patient died 14 we...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1988-06-01 00:00:00
abstract：:One thousand twenty inductions of labor by amniotomy and continuous infusion of oxytocin at the Royal Women's Hospital were reviewed. Three different starting rates of infusion of oxytocin were used by altering the concentration to 2, 5, or 10 U/L. There was no difference in success of induction as measured by inducti...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1989-12-01 00:00:00
abstract：:Twin gestations with diamniotic monochorionic placentas have increased perinatal morbidity. We report a case in which, following the death of one member of a set of twins, absent end-diastolic flow was noted. At delivery, we noted thrombosis of placental vessels and vascular connections between the placental vessels o...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1992-05-01 00:00:00
abstract：BACKGROUND:Neuroleptic malignant syndrome (NMS) is characterized by a tetrad of mental status changes, extrapyramidal symptoms, hyperpyrexia, and autonomic instability and can develop after the use of antipsychotics. CASE:A young, multiparous woman presented at 26 weeks of gestation with acute psychosis and was treate...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0b013e31822864af
更新日期：2012-02-01 00:00:00
abstract：OBJECTIVE:To assess the ectopic pregnancy risk among women who conceived with assisted reproductive technology (ART) procedures. METHODS:The ectopic rate for ART pregnancies was calculated from population-based data of pregnancies conceived with ART in U.S. clinics in 1999-2001. Variation in ectopic risk by patient an...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/01.AOG.0000196503.78126.62
更新日期：2006-03-01 00:00:00
abstract：:Compared with men, at-risk alcohol use by women has a disproportionate effect on their health and lives, including reproductive function and pregnancy outcomes. Obstetrician–gynecologists have a key role in screening and providing brief intervention, patient education, and treatment referral for their patients who dri...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0b013e31822c9906
更新日期：2011-08-01 00:00:00
abstract：OBJECTIVE:To compare ophthalmic arterial velocimetry in normotensive and preeclamptic gravidas with and without photophobia. METHODS:Ophthalmic arteries were studied by color-flow Doppler ultrasonography in 118 normotensive pregnant women, 20 gravidas with preeclampsia and no visual symptoms, and 11 with preeclampsia,...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(99)00294-x
更新日期：1999-09-01 00:00:00
abstract：:In a comparative trial, ethanol effectively arrested preterm labor for 48 hours for more in 32% of cases, a beta-adrenergic agent (salbutamol) in 60% of cases (not statistically significant), and a combination of ethanol and indomethacin in 70% of cases (statistically significant, P less than 0.5). Labor was delayed f...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1979-02-01 00:00:00
abstract：:Human parvovirus B-19 infection was diagnosed by DNA hybridization in blood obtained by cordocentesis from two hydropic fetuses at 22 and 26 weeks' gestation; B-19-specific immunoglobulin M (IgM) in fetal blood was negative in both cases. Hematologic studies demonstrated severe anemia, which was treated by intravascul...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1990-03-01 00:00:00
abstract：:It has been demonstrated that in selected cases of subfertility in men, the first portion of the split ejaculate is superior to the specimen considered as a whole with regard to sperm density, sperm motility, and sperm morphology and also in those cases where there is increased seminal viscosity in the whole ejaculate...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1975-01-01 00:00:00
abstract：:Ultrasound scan showed some degree of placenta previa in 503 patients. Of this group, 5.6% (28) had clinically significant bleeding or documented placenta previa at delivery. A scoring system based on placental localization was not successful in predicting who was at high risk for bleeding. However, the likelihood of ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1983-05-01 00:00:00
abstract：OBJECTIVE:To examine some of the controversy that still exists regarding the definition and management of microinvasive or early invasive cervical carcinoma, in particular, the current concepts regarding the definition of these conditions and their inclusion into the staging system for cervical cancer. DATA SOURCES:A ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0029-7844(96)00051-8
更新日期：1996-06-01 00:00:00
abstract：OBJECTIVE:To estimate whether the timing of bladder emptying affects focal myometrial contraction development and image adequacy. METHODS:Women at 14 0/7-32 0/7 weeks of gestation undergoing a transvaginal ultrasound examination from January 1, 2012, to September 1, 2012, were eligible for this blinded randomized cont...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1097/AOG.0b013e3182860b8d
更新日期：2013-04-01 00:00:00
abstract：OBJECTIVE:To determine if suppressive acyclovir therapy given to term gravidas experiencing a first episode of genital herpes simplex virus (HSV)-infection during pregnancy decreases the need for cesarean delivery for that indication. METHODS:Forty-six pregnant women with first episodes of genital herpes during pregna...
journal_title：Obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0029-7844(95)00357-6
更新日期：1996-01-01 00:00:00
abstract：OBJECTIVES:To estimate the number of women who will have symptomatic pelvic floor disorders in the United States from 2010 to 2050. METHODS:We used population projections from the U.S. Census Bureau from 2010 to 2050 and published age-specific prevalence estimates for bothersome, symptomatic pelvic floor disorders (ur...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0b013e3181c2ce96
更新日期：2009-12-01 00:00:00
abstract：:A double-blind prospective study of 99 patients undergoing vaginal and abdominal hysterectomy was performed at North Carolina Baptist Hospital of the Bowman Gray School of Medicine at Wake Forest University. The study indicated that low-dose intravenous carbenicillin begun preoperatively and continued for 24 hours res...
journal_title：Obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：
更新日期：1978-07-01 00:00:00
abstract：OBJECTIVE:To estimate the detection rate of abnormalities by transvaginal ultrasound in early pregnancy. METHODS:We prospectively analyzed records of 3592 sequential pregnant women at 10-16 weeks' (singleton) gestation (mean 13 weeks and 2 days). After exclusion of 114 women, there were 3478 women in the study. Each w...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(00)00951-0
更新日期：2000-09-01 00:00:00
abstract：:Fourteen patients with stage IB or IIA neuroendocrine small-cell cervical cancer were treated either by operation alone or operation in combination with postoperative radiotherapy at the University of California, Irvine Medical Center, and Memorial Medical Center of Long Beach, between January 1979 and February 1986. ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1988-01-01 00:00:00
abstract：OBJECTIVE:To evaluate the pregnancy characteristics, methods of delivery, and neonatal outcomes of fetuses affected by osteogenesis imperfecta. METHODS:We reviewed medical records of 1016 individuals whose cells were sent to the University of Washington Collagen Diagnostic Laboratory between 1987 and 1994 for confirma...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(00)01100-5
更新日期：2001-01-01 00:00:00
abstract：:Sixty-two cases of oligohydramnios diagnosed by ultrasound between 13-28 weeks' gestation were reviewed. Three experienced ultrasonographers used a subjective scale to rate the oligohydramnios as mild, moderate, severe, or anhydramniotic. Interobserver reliability was excellent (intraclass correlation coefficient 0.81...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1989-05-01 00:00:00
abstract：:First, second, and third trimester serum samples from 100 healthy pregnant women, umbilical cord serum samples from each delivery, and, for comparison, sera from 76 nonpregnant control subjects were assayed by indirect immunofluorescence for the presence of antibody to human epithelioid cell nuclei at titers of greate...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1986-10-01 00:00:00
abstract：:Fifteen infertile women diagnosed by endometrial dating to have a luteal phase defect were treated with human pituitary follicle-stimulating hormone (hFSH) for 45 cycles. Human follicle-stimulating hormone was administered intramuscularly in a dose of 50 IU/day (group 1) for 35 cycles and 100 IU/day (group 2) for ten ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1984-07-01 00:00:00
abstract：:Although surgical management of symptomatic pelvic organ prolapse (POP) is common and often necessary, conservative treatments such as pessaries, pelvic floor muscle training, or both can usually result in symptomatic improvement. When treating patients with POP, health care practitioners should focus primarily on ide...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1097/AOG.0b013e31824c0806
更新日期：2012-04-01 00:00:00
abstract：:Postcesarean section febrile morbidity remains a common problem on obstetric services. Although a few preliminary studies have reported on the use of ultrasound to assess the postcesarean section patient, they have not compared sonographic findings with either intraoperative or postoperative events. These reports have...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1985-08-01 00:00:00
abstract：OBJECTIVE:To estimate if there were dietary or socioeconomic factors associated with preterm premature rupture of membranes (PROM). METHODS:In this case-control study, women with preterm PROM (n = 46) were compared with healthy pregnant women matched for gestational age and vitamin supplementation. Measurements includ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(02)02380-3
更新日期：2002-12-01 00:00:00
abstract：OBJECTIVE:To estimate whether the urinary force of stream method is noninferior to a standard fill voiding trial for rate of catheterization within 6 weeks after apical prolapse surgery in those discharged without a catheter. METHODS:A noninferiority randomized controlled trial was conducted in postoperative women com...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1097/AOG.0000000000003159
更新日期：2019-04-01 00:00:00
abstract：OBJECTIVE:To assess total time for evaluation of women with first-trimester pregnancy concerns in an early pregnancy unit compared with an emergency department (ED) within a single safety net hospital system. METHODS:We performed a retrospective cohort study at Denver Health Medical Center from May 1, 2017, to April 3...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0000000000004080
更新日期：2020-11-01 00:00:00
