Abstract：
:Sound pressure in amniotic fluid was created by application of either an electronic artificial larynx or a standard audiometric earphone to the abdominal surface of pregnant ewes. Sound transmission was assessed with a hydrophone placed near the ear of the fetus within the intact amnion. Sound pressures produced by the electronic artificial larynx located directly over the hydrophone averaged 134.9 dB, whereas the highest sound pressure produced by a similarly placed earphone was 95.2 dB. Sound transmission decreased dramatically with increasing distance between the sound source and the hydrophone; this may account for some of the variability in fetal response when the sound test is used clinically. Caution is recommended in administering the sound test until the effects of high noise levels on the fetus are better understood.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Gerhardt KJ,Abrams RM,Kovaz BM,Gomez KJ,Conlon Mdoi
10.1016/0002-9378(88)90526-1subject
Has Abstractpub_date
1988-07-01 00:00:00pages
228-32issue
1eissn
0002-9378issn
1097-6868pii
0002-9378(88)90526-1journal_volume
159pub_type
杂志文章abstract：:Our present knowledge of the role of sex steroids in the development as well as the prevention of endometrial cancer is reviewed. Factors which increase the exposure of the uterus to unopposed estrogens, either exogenous or endogenous, are associated with increased risk of endometrial adenocarcinoma. However, there is...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(83)91014-1
更新日期：1983-07-15 00:00:00
abstract：OBJECTIVE:This study was undertaken to evaluate factors at home and work associated with antenatal morbidity (emergency department visits and hospitalizations) among employed pregnant women. STUDY DESIGN:This prospective study of 213 women included 3 antenatal interviews at about 16, 24, and 30 weeks' gestation with q...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(99)70103-1
更新日期：1999-11-01 00:00:00
abstract：OBJECTIVE:This study was undertaken to compare surgical techniques for the primary repair of obstetric anal sphincter lacerations. STUDY DESIGN:Patients with complete third- or fourth-degree lacerations were recruited and randomly assigned to either an end-to-end or overlapping repair. Data collection included demogra...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/j.ajog.2004.11.045
更新日期：2005-05-01 00:00:00
abstract：:The role of the man in the etiology of recurrent vaginitis was examined in three women who reported an association between coitus and the initiation of clinical symptoms. The patients' disorders consisted of vaginal pruritus, burning, a white discharge, and painful coitus. Vaginal pH in each case was 4.5. Microscopic ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(88)90489-9
更新日期：1988-07-01 00:00:00
abstract：:The maturation of the glomerular filtration rate (GFR) and the interrelationship between the GFR and the renal transport of sodium and chloride have been evaluated during the last trimester of gestation with the use of long-term experiments in fetal lambs. An increase in GFR (milliliters per minute) parallel to the in...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(77)90712-8
更新日期：1977-08-01 00:00:00
abstract：OBJECTIVE:Our aim was to study the association between severity of pelvic inflammatory disease at laparoscopy and the probability of achieving a live birth, while accounting for subsequent episodes of pelvic inflammatory disease. STUDY DESIGN:Beginning in 1960 a cohort of 1288 women in Lund, Sweden, who had clinical s...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(98)70534-4
更新日期：1998-05-01 00:00:00
abstract：:We analyzed interview and record review data from 9,823 deliveries to evaluate the relationship between prior history of induced abortion and subsequent late pregnancy outcomes. Complications such as bleeding in the first and third trimesters, abnormal presentations and premature rupture of the membranes, abruptio pla...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)91041-4
更新日期：1983-05-15 00:00:00
abstract：OBJECTIVE:In a previous report, we described the results of a randomized, controlled trial that evaluated the potential of raloxifene to induce or exacerbate hot flushes. Here, we provide additional analyses that were undertaken to identify potential predictors of hot flushes and to assess the clinical usefulness of va...
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/j.ajog.2004.04.042
更新日期：2004-12-01 00:00:00
abstract：OBJECTIVE:Our aim was to assess the association between loop electrosurgical excision procedure (LEEP) and the subsequent risk for spontaneous preterm delivery, with the use of population-based data from various nationwide registries. STUDY DESIGN:The study population consisted of all singleton deliveries in Denmark d...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2009.02.004
更新日期：2009-07-01 00:00:00
abstract：OBJECTIVE:Our purpose was to determine the frequency and safety of the use of epidural anesthesia and the correlation between bleeding time and maternal-neonatal bleeding complications in a group of pregnant women who participated in a multicenter trial of low-dose aspirin in pregnancy. STUDY DESIGN:Data regarding typ...
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：10.1016/0002-9378(95)90495-6
更新日期：1995-05-01 00:00:00
abstract：:A randomized prospective trial study was developed to determine the diagnostic value of the fetal biophysical profile in relationship to the nonstress test. The diagnostic values of these tests were assessed in terms of the incidence of abnormal outcome. In addition comparisons between the positive and negative predic...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：
更新日期：1985-11-15 00:00:00
abstract：BACKGROUND:The Apgar score is universally used for fetal assessment at the time of birth, whereas, the collection of fetal cord blood gases is performed commonly in high-risk situations or in the setting of Apgar scores of <7, which is a less standardized approach. It has been well-established that neonatal acidemia at...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2016.05.035
更新日期：2016-10-01 00:00:00
abstract：OBJECTIVE:We sought to determine if periconceptional exposure to agrichemicals was associated with the development of gastroschisis. STUDY DESIGN:We conducted a retrospective, case-controlled study using Washington State Birth Certificate and US Geological Survey databases. Cases included all live-born singleton infan...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2010.01.023
更新日期：2010-03-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine the effect of discordant fetal growth on subsequent perinatal and neonatal outcome for different degrees of birth weight discordance in preterm twin gestations. STUDY DESIGN:One hundred twenty-two live born twin sets delivered between 25 and 34 completed weeks' gest...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(95)90027-6
更新日期：1995-03-01 00:00:00
abstract：:Linear growth in fetuses with trisomy 18 has not been systematically described. We studied the relationship between long-bone, crown-rump, and foot length and gestational age in 17 postmortem fetal specimens with this syndrome. Long-bone and crown-rump lengths were compared with normal regression lines and foot length...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)90691-7
更新日期：1990-07-01 00:00:00
abstract：:The source of amniotic fluid prolactin was investigated with the use of amnion, chorion, placenta, and decidual tissue taken from term human pregnancy. Decidua alone of these tissues contained significant quantities of prolactin. The release of decidual prolactin was affected by the presence or absence of oxygen and p...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)33248-3
更新日期：1977-01-15 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine whether ultrasonography is more accurate than vaginal examination in the determination of fetal occiput position in the second stage of labor. STUDY DESIGN:Eighty-eight patients in the second stage of labor were evaluated by vaginal examination and by combined trans...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.01.029
更新日期：2004-08-01 00:00:00
abstract：:Norinyl 1+50 oral contraceptive pills contain 1 mg of the progestin, norethindrone, and .05 mg (or 50 mcg) of the estrogen, mestranol. These pills can either be taken in 21-day or 28-day therapy cycles. This dosage is low but effective. Oral contraception is supposed to prevent pregnancy by suppressing ovulation and ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1973-01-01 00:00:00
abstract：OBJECTIVE:Our purpose was to study the distribution of symptoms and disorders of urinary incontinence or prolapse among white and Hispanic women. STUDY DESIGN:Data were collected for all new patients referred to the urogynecology clinic over a 2-year period. One hundred twenty-one Hispanic and 50 white women consecuti...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(96)70443-x
更新日期：1996-02-01 00:00:00
abstract：:beta-Sympathomimetic drugs cross the placenta freely. Just as these agents cause serious cardiovascular changes in the mother, they may cause severe cardiovascular complications in the fetus. beta-Sympathomimetic agents for tocolysis have been associated with fetal heart rate and rhythm disturbances, hydrops, stillbir...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90219-6
更新日期：1989-07-01 00:00:00
abstract：:The gonadotropin-releasing hormone antagonist offers several advantages over the use of the agonist and allows several physiologic questions to be addressed. In this study, we evaluated the ability of Nal-Glu to acutely inhibit the luteinizing hormone surge and prevent ovulation. We also assessed whether recovery of t...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0002-9378(91)90037-r
更新日期：1991-12-01 00:00:00
abstract：:This study was designed to test the hypothesis that the thermal response to endurance exercise is altered by the thermal adaptations to pregnancy. Accordingly, rectal temperature was monitored in 18 recreational athletes before, during, and after 20 minutes of continuous exercise before conception and every 6 to 8 wee...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90015-j
更新日期：1991-12-01 00:00:00
abstract：:The purpose of this study was to evaluate the transfer constant of conversion of plasma androstenedione to estrone ([p]AE1BU) as a function of total body weight and excess body weight in ovulatory and anovulatory young adult women. Twenty-four ovulatory and 31 anovulatory women were studied; their weights ranged from ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(78)90288-0
更新日期：1978-02-15 00:00:00
abstract：OBJECTIVE:This study compared myoendometrial versus placental radial uterine arteries from late-pregnant rats to evaluate differences in passive mechanical properties and arterial wall hyperplasia. STUDY DESIGN:Myoendometrial and placental radial uterine arteries were dissected from late-pregnant (day 17-19) Sprague-D...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.06.094
更新日期：2005-01-01 00:00:00
abstract：:Current concepts of the pathogenesis of preeclampsia involve the generalized dysfunction of maternal vascular endothelial cells. We measured the endothelial isoform of fibronectin as a marker of endothelial cell injury throughout pregnancy in a prospective, case-control study. Nineteen women met strict criteria for th...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90435-t
更新日期：1991-10-01 00:00:00
abstract：:The presence of fetal breathing, even if episodic in character, may not indicate fetal well being. In a study of fetal lambs with long-term implantation of catheters and electrodes, five of six lambs which died before the onset of labor had terminal episodes of continuous breathing, preceded by 4 1/4 to 45 1/2 hours o...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)33138-6
更新日期：1978-08-15 00:00:00
abstract：:To investigate the effect of medroxyprogesterone acetate therapy upon the immune response and endogenous status of patients with primary or recurrent endometrial adenocarcinoma, 8 patients were treated with progestin therapy as inpatients for 33-80 days. Patients were studied intermittently for up to 72 months. Seru...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(72)90769-7
更新日期：1972-05-15 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine whether nuclear magnetic resonance-based metabolomic markers in first-trimester maternal serum can detect fetuses with trisomy 18. STUDY DESIGN:This was a study of pregnancies between 11 weeks and 13 weeks 6 days' gestation. We analyzed 30 cases of trisomy 18 and a ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2013.03.028
更新日期：2013-07-01 00:00:00
abstract：OBJECTIVE:This study was undertaken to evaluate the levels of matrix metalloproteinase 2 (MMP-2) in the precursors lesions and in the invasive cervical carcinoma and to quantify the immune reactive expression of MMP-2, using MMP-2 immunohistochemistry, in intraepithelial cervical neoplasias and in the invading cervical...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2003.12.017
更新日期：2004-05-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to compare the mortality risk of expectant management with the risk of delivery at each week of term pregnancy in 4 racial/ethnic groups. STUDY DESIGN:This was a retrospective cohort study of all nonanomalous, term deliveries in California from 1997 to 2006 among white, black, ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2014.06.008
更新日期：2014-12-01 00:00:00
