Abstract:
OBJECTIVES:Our purpose was to determine whether systemic hypotension induced by rapid withdrawal of fetal blood would induce periventricular leukomalacia in the brain of premature fetal sheep. STUDY DESIGN:At 113 days' gestation, systemic hypotension (mean blood pressure <30 mm Hg) was induced by withdrawing approximately 35% of the fetoplacental blood volume in the hemorrhage group (n = 6), whereas in the control group (n = 4) isovolemic exchange transfusion was carried out. Six days after the insult, fetal brains were removed and processed for histologic analysis. RESULTS:Five of the 6 fetuses in the hemorrhage group exhibited periventricular white-matter lesions, consisting of nodular coagulation necrosis or diffuse axonal swellings or both. No abnormal findings other than these lesions were detected in the fetal brains in either experimental group. CONCLUSION:Hemorrhagic hypotension antenatally induced brain lesions similar to those of periventricular leukomalacia, suggesting that it is an essential element in the pathogenesis of periventricular leukomalacia in premature fetuses.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Matsuda T,Okuyama K,Cho K,Hoshi N,Matsumoto Y,Kobayashi Y,Fujimoto Sdoi
10.1016/s0002-9378(99)70519-3subject
Has Abstractpub_date
1999-09-01 00:00:00pages
725-30issue
3eissn
0002-9378issn
1097-6868pii
S0002937899705193journal_volume
181pub_type
杂志文章abstract:OBJECTIVE:Our intention was to determine whether there is a unique pattern of infertility diagnoses in older infertile couples. STUDY DESIGN:The design of this study was a retrospective chart review study. It was performed in a tertiary referral reproductive medicine unit. There were 2 groups of patients-couples: grou...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(99)70331-5
更新日期:1999-10-01 00:00:00
abstract:OBJECTIVE:Glycemic control, perinatal outcome, and health care costs were evaluated among women with type 1 diabetes mellitus who began insulin pump therapy during pregnancy (group 1, n = 24), were treated with multiple insulin injections (group 2, n = 24), or were already using an insulin pump before pregnancy (group ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2000.106182
更新日期:2000-06-01 00:00:00
abstract:BACKGROUND:Recommendations on preventing primary cesarean delivery removed the previously defined time limits for latent labor (defined as ending at 6 cm) and urged clinicians to avoid cesarean delivery for labor abnormalities in the latent phase. However, relatively little is known about the implications of labor curv...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2019.05.041
更新日期:2019-11-01 00:00:00
abstract::Surgical abortion in the first trimester comprises the majority of voluntary pregnancy interruptions performed in the United States. The majority of these procedures are done in outpatient settings with the patient under local anesthesia. Appropriate volume of and deep injection of local anesthetic can reduce pain ass...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1067/s0002-9378(03)00107-8
更新日期:2003-08-01 00:00:00
abstract:OBJECTIVE:Our purpose was to examine the potential teratogenicity of calcium channel blockers. STUDY DESIGN:Six teratogen information services prospectively collected and followed up 78 women with first-trimester exposure to calcium channel blockers. Pregnancy outcome was compared (by paired t text of chi2 analysis) w...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/s0002-9378(96)70307-1
更新日期:1996-03-01 00:00:00
abstract:BACKGROUND:Subcuticular skin closure with suture after cesarean has been shown to result in lower rates of wound complications than with staple closure. However, the optimal choice of suture material for subcuticular skin closure is unclear. Vicryl (a braided multifilament synthetic suture; Ethicon, Somerville, NJ) and...
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.2016.05.012
更新日期:2016-10-01 00:00:00
abstract:OBJECTIVE:We sought to define the prevalence, trends, and outcomes of primary and secondary chronic hypertension in a population-based sample of deliveries. STUDY DESIGN:An estimated 56,494,634 deliveries were identified from the 1995 through 2008 Nationwide Inpatient Sample. The association of primary and secondary c...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2011.10.878
更新日期:2012-02-01 00:00:00
abstract:OBJECTIVE:The aim of this investigation was to describe splenic artery flow velocity waveforms in the appropriate- and small-for-gestational-age human fetus. STUDY DESIGN:Splenic artery flow velocity waveforms were prospectively obtained from 95 appropriate- and 15 small-for-gestational-age fetuses with pulsed Doppler...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(95)90005-5
更新日期:1995-03-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to investigate the occurrence of in utero defecation as a normal function in the human fetus. STUDY DESIGN:The anuses of 240 fetuses were studied sonographically between weeks 15 and 41 of gestation. Fetal defecation was defined as the expulsion of rectal contents through the ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2003.107
更新日期:2003-01-01 00:00:00
abstract::We present a case of a primiparous patient at 35 weeks' gestation who had had laparoscopic gastric banding, and who presented to labor and delivery with protracted vomiting followed by an acute abdomen and fetal distress. An emergency surgery revealed acute gastric ulcer perforation. This complication, although rare, ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.03.036
更新日期:2004-11-01 00:00:00
abstract:OBJECTIVE:Our purpose was to evaluate prostaglandin F2 alpha output at fetal membrane surfaces relative to labor and to assess amniotic prostaglandin E2 concentration changes on prostaglandin F2 alpha output. STUDY DESIGN:Intact and separated fetal membranes from 10 elective cesarean sections and nine vaginal deliveri...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(95)90190-6
更新日期:1995-07-01 00:00:00
abstract::In a series of 1,000 newborn infants referred to a regional neonatal center, 32 iatrogenically preterm infants were identified. All had been delivered following elective termination of uncomplicated, apparently term pregnancies, without prior documentation of fetal lung maturity or ultrasonic determination of fetal bi...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(78)90717-2
更新日期:1978-12-15 00:00:00
abstract::Accurate diagnosis of chorioamnionicity in multiple pregnancies is the key to appropriate clinical management of multiple gestation. Although prenatal ultrasound assessment of chorioamnionicity is well established and highly accurate if performed in early pregnancy, exceptions and artifacts arise from anatomic variati...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2018.02.010
更新日期:2018-09-01 00:00:00
abstract:BACKGROUND:Myofascial pain is characterized by the presence of trigger points, tenderness to palpation, and local or referred pain, and commonly involves the pelvic floor muscles in men and women. Pelvic floor myofascial pain in the absence of local or referred pain has also been observed in patients with lower urinary...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2018.06.014
更新日期:2018-11-01 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::Microarrays can be constructed with dozens to millions of probes on their surface to allow high-throughput analyses of many biologic processes to be performed simultaneously on the same sample. Microarrays are now widely used for gene expression analysis, deoxyribonucleic acid resequencing, single-nucleotide polymorph...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2005.12.014
更新日期:2006-08-01 00:00:00
abstract:OBJECTIVES:The purpose of this study was to determine the effect of magnesium sulfate on protein kinase C (PKC) translocation in myometrial cells from pregnant women. STUDY DESIGN:Myometrium was obtained at the time of cesarean delivery from women at term before labor. Cultured myometrial cells were treated with magne...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2003.09.009
更新日期:2004-02-01 00:00:00
abstract:OBJECTIVE:Our purpose was to study platelet size and surface glycoprotein expression in normal fetal and maternal blood throughout pregnancy. STUDY DESIGN:A cross-sectional study was performed at the Harris Birthright Research Centre for Fetal Medicine, King's College Hospital Medical School, London. Fetal and materna...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(94)90099-x
更新日期:1994-09-01 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:To assess the effectiveness of inner thigh "Taping" compared with "Traction" using a weighted bag when an intracervical Foley catheter is used for cervical ripening. STUDY DESIGN:We performed a randomized controlled trial at a tertiary hospital on women with a singleton pregnancy in cephalic presentation adm...
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.2013.05.028
更新日期:2013-09-01 00:00:00
abstract:OBJECTIVE:This study was undertaken to determine the relationship among cervical lactoferrin concentration, other cervical markers potentially related to infection, and spontaneous preterm birth. STUDY DESIGN:Cervical lactoferrin concentrations obtained at 22 to 24 weeks' gestation among 121 women who had a spontaneou...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2000.104211
更新日期:2000-03-01 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::Reanalysis of data on the ovulation method of natural family planning collected by the World Health Organization yields the following conclusions. The method is effective during perfect (correct and consistent) use, with a first-year probability of failure of 3.4%. However, it is extremely unforgiving of imperfect use...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(11)90581-x
更新日期:1991-12-01 00:00:00
abstract:OBJECTIVE:Placental lipid peroxides and thromboxane are abnormally increased in preeclampsia. Thromboxane is a potent vasoconstrictor of the placental vasculature. Peroxides stimulate cyclooxygenase (prostaglandin H synthase), and thereby could increase thromboxane, to cause vasoconstriction in the placenta. This study...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(93)90044-j
更新日期:1993-10-01 00:00:00
abstract:OBJECTIVE:Our purpose was to determine whether RU 486 (mifepristone) has direct estrogenic activity in uterine myocytes. STUDY DESIGN:Ovariectomized adult rats were treated with RU 486, and its effect on uterine oxytocin receptor concentration, as a marker of estrogenic activity, was measured. Results were compared wi...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(95)90181-7
更新日期:1995-07-01 00:00:00
abstract::Percutaneous umbilical blood sampling (cordocentesis) provides direct access to the fetal circulation in the second and third trimesters of pregnancy. Seventeen patients underwent this procedure between December 1985 and December 1986 for evaluation of a variety of clinical situations, including nonlethal fetal abnorm...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90795-8
更新日期:1988-01-01 00:00:00
abstract::Serum gonadotropin, estrogen, and androgen levels were measured in samples obtained from 19 patients with polycystic ovarian disease (PCO) and from 10 normal women on day 2 to 4 of their menstrual cycles. In patients with PCO, the mean (plus or minus S.E.) concentration was significantly higher (P smaller than 0.001) ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(75)90081-2
更新日期:1975-02-15 00:00:00
abstract:OBJECTIVE:Our purpose was to evaluate the effect of peritoneal fluid from women with endometriosis on sperm motility and function in an in vitro model. STUDY DESIGN:Peritoneal fluid was collected at laparoscopy from patients with and without endometriosis. Human donor sperm was diluted with this fluid, and its effect ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(96)70210-7
更新日期:1996-06-01 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:The purpose of this study was to investigate the potential efficacy of high-intensity focused ultrasound for the treatment of uterine fibroid tumors in a nude mouse model. STUDY DESIGN:A total of 60 female athymic nude mice were inoculated subcutaneously with 3 to 5 x 10(6) ELT-3 cells, a uterine fibroid tum...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2000.105347
更新日期:2000-07-01 00:00:00