Abstract：
:In a previous study, it was suggested that the presence of a grade III placenta correlates 100% with a mature lecithin/sphingomyelin (L/S) ratio and may replace amniocentesis in confirming fetal lung maturity. In this study that hypothesis was tested in 563 pregnancies. All patients underwent amniocentesis and simultaneously had placental grading. The correlations of placental grade with an L/S ration greater than or equal to 2 were: grade 0, 17%; grade I, 68%; grade II, 91%. The correlations of placental grade with the presence of phosphatidylglycerol (PG) were: grade 0, 17; grade 1, 41%; grade II, 79%; grade II, 75%. The false positive rates associated with grade III placenta were, therefore, 7% for mature L/S ratio and 25% for PG present: when combined with a biparietal diameter greater than or equal to 9.0 cm, a grade III placenta incorrectly predicted lung maturity in 8.5%. We conclude that placental grading is not accurate enough to replace amniocentesis as the standard test of fetal pulmonary maturity.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Harman CR,Manning FA,Stearns E,Morrison Idoi
10.1016/0002-9378(82)90478-1subject
Has Abstractpub_date
1982-08-15 00:00:00pages
941-3issue
8eissn
0002-9378issn
1097-6868pii
0002-9378(82)90478-1journal_volume
143pub_type
杂志文章abstract：:Trichomonas vaginalis, a common genital pathogen, was found to possess both specific estrogen and specific androgen receptors. These 4.3 S macromolecules were proteinaceous in nature. Both metronidazole-resistant and metronidazole-sensitive strains possessed both types of sex hormone-binding proteins. The estrogen rec...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(87)90122-0
更新日期：1987-05-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to investigate the vascular function of pregnant women with insulin-dependent diabetes mellitus, using a noninvasive method. STUDY DESIGN:This was a cross-sectional study that examined vascular function, which was assessed by flow-mediated dilatation of the brachial artery, in 3...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.119111
更新日期：2002-01-01 00:00:00
abstract：:A relationship between the urine thrombomodulin/creatinine ratio and preeclampsia was investigated. Preeclamptic women had a higher urine thrombomodulin/creatinine ratio than did matched controls. However, significantly elevated urine thrombomodulin/creatinine ratios were found in severely, but not mildly, preeclampti...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(94)90111-2
更新日期：1994-09-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to explore the association between glycosylated hemoglobin concentrations during pregnancy and macrosomia. STUDY DESIGN:One hundred thirty-six pregnancies in 120 women with type 1 or type 2 diabetes were studied longitudinally between January 1, 1991, and December 31, 1996. Glycosyl...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(99)70460-6
更新日期：1999-07-01 00:00:00
abstract：:Coronavirus disease 2019 is an emerging disease with a rapid increase in cases and deaths since its first identification in Wuhan, China, in December 2019. Limited data are available about coronavirus disease 2019 during pregnancy; however, information on illnesses associated with other highly pathogenic coronaviruses...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2020.02.017
更新日期：2020-05-01 00:00:00
abstract：OBJECTIVE:The objective of this study was to compare different management strategies for women at risk for cervical incompetence. STUDY DESIGN:In an ongoing randomized trial patients with a previous preterm delivery at <34 weeks' gestation who met clinical criteria for the diagnosis of cervical incompetence are alloca...
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：10.1067/mob.2000.108874
更新日期：2000-10-01 00:00:00
abstract：:Percutaneous nephrostomy is a useful method of supravesical diversion when ureteral obstruction occurs at initial diagnosis of gynecologic cancer or recurrence of disease. Although survival is prolonged, the attendant quality of life would indicate that percutaneous nephrostomy should be performed only in those cases ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(84)90120-0
更新日期：1984-08-01 00:00:00
abstract：:Advances in perinatal care have resulted in a decline in mortality of very-low-birth-weight infants (< 1.5 kilograms) and also in an extension of the mortality period. To determine the current relevance of neonatal mortality results as indicators of outcome, all deaths among 427 very-low-birth-weight infants admitted ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(80)90888-1
更新日期：1980-08-01 00:00:00
abstract：OBJECTIVE:The aim of the study was to evaluate the following: (1) pregnancy outcome after blunt abdominal trauma and (2) factors that may predict preterm birth and adverse peripartum outcomes. STUDY DESIGN:All women who had noncatastrophic abdominal trauma and came to the labor and delivery suite July 1994-August 1997...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(98)70121-8
更新日期：1998-11-01 00:00:00
abstract：:Two hundred forty-two high-risk children and 47 low-risk children were prospectively studied to assess the relationship between biologic risk factors that occurred during the perinatal period and the motor and cognitive deficits that were identified during the first year of life. Multiple risk factors were present in ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90867-0
更新日期：1983-04-15 00:00:00
abstract：:Smoking increases the risk of lung cancer and cardiovascular disease among persons of both sexes. The risk of cardiovascular disease is further increased among users of oral contraceptives who smoke, particularly those who are >/=35 years old or carry the coagulation factor V Leiden mutation. Other important cardiovas...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/s0002-9378(99)70695-2
更新日期：1999-06-01 00:00:00
abstract：OBJECTIVE:Recent developments permit the use of pulse oximetry to evaluate fetal oxygenation in labor. We tested the hypothesis that the addition of fetal pulse oximetry in the evaluation of abnormal fetal heart rate patterns in labor improves the accuracy of fetal assessment and allows safe reduction of cesarean deliv...
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：10.1067/mob.2000.110632
更新日期：2000-11-01 00:00:00
abstract：OBJECTIVE:We sought to determine the interventions utilized by maternal-fetal medicine specialists in the prediction and prevention of preterm labor in higher-order multiple (HOM) gestations. STUDY DESIGN:Online questionnaires and email surveys were sent to all the maternal-fetal medicine specialists in Canada (n=122)...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2014.12.031
更新日期：2015-05-01 00:00:00
abstract：:Pure long-term cytotrophoblast cultures were established from human first-trimester placentas by growing chorionic villus explants without enzymatic digestion. Cytoplasmic human chorionic gonadotropin was detectable in all (100%) cells in culture when labeled with a polyclonal anti-human chorionic gonadotropin antibod...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90314-1
更新日期：1989-04-01 00:00:00
abstract：:The conversion of androstenedione to estrone in various tissues of 13 human fetuses ranging from 9 to 40 weeks of gestation was measured by a double isotope method in vitro. The data revealed differences in aromatization between cerebrum and hypothalamus. For hypothalamic tissue the conversion rate ranged between 0.01...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90196-9
更新日期：1975-10-01 00:00:00
abstract：:The influence of caffeine and cigarette consumption on fetal growth during pregnancy was studied retrospectively in 913 newborn infants. Analysis of variance was adjusted for length of gestation and sex. A significant caffeine-cigarette interaction was found on birth weight (F = 85.4, p less than 0.01). Among women sm...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(87)80301-0
更新日期：1987-11-01 00:00:00
abstract：:The first reported measurement of plasma renin and aldosterone in toxemia with an abdominal pregnancy is presented. In contrast to toxemia where plasma renin and aldosterone are either normal or low, extraordinarily high levels of both were found in this patient which returned to normal after delivery. The role of ext...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90046-0
更新日期：1975-07-01 00:00:00
abstract：:Forty pregnant women between 30 and 42 weeks' gestational age were studied to examine the effects of external sound and vibration on the fetal heart rate. A significant increase in the mean duration and amplitude of the first acceleration after sound stimulus was found when these values were compared with the control ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(86)80037-0
更新日期：1986-10-01 00:00:00
abstract：:This review concentrates on 2 consequences of cesarean deliveries that may occur in a subsequent pregnancy. They are the pathologically adherent placenta and the cesarean scar pregnancy. We explored their clinical and diagnostic as well as therapeutic similarities. We reviewed the literature concerning the occurrence ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2012.03.007
更新日期：2012-07-01 00:00:00
abstract：:The investigation of estrogen and/or androgen administration on physical and psychological symptoms in the surgical menopause was carried out in a prospective, double-blind, crossover design. When patients who received either a combined estrogen-androgen drug or androgen alone were compared with those who received est...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/0002-9378(85)90001-8
更新日期：1985-01-15 00:00:00
abstract：OBJECTIVE:The effect of maternal tryptophan loading on fetal plasma and brain, kynurenic acid, and quinolinic acid concentrations was compared in late gestation fetal sheep with either chronically embolized or nonembolized placentas. STUDY DESIGN:The placentas of 4 ewes were embolized by daily injection of mucopolysac...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.117969
更新日期：2001-10-01 00:00:00
abstract：:The present investigation was designed to reassess the fractional postcoital test (PCT). Specifically, the study addressed the question of whether the internal cervical mucus sperm count is significantly different from the sperm counts at other cervical levels. By means of standardized methodology, 25 normal postcoita...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(79)90056-5
更新日期：1979-02-15 00:00:00
abstract：OBJECTIVE:To test the effect of prolactin (PRL) on expression of proinflammatory cytokines and matrix metallopeptidase 9 (MMP-9) in vitro. STUDY DESIGN:Tissue explants were incubated from 4 to 48 hours alone or in the presence of 500 ng/mL PRL, and mRNA expression in tissues and secretion of interleukin (IL)-1β, tumor...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2014.01.039
更新日期：2014-07-01 00:00:00
abstract：:The daily symptom records of 150 untreated women with a convincing history of the premenstrual syndrome were investigated qualitatively and quantitatively by means of time series analysis in the form of Trigg's technique for trends. Symptoms were monitored with use of a modified menstrual distress questionnaire. Analy...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90808-2
更新日期：1986-08-01 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：:The accuracy of clinical diagnosis for pelvic inflammatory disease was determined in 95 women who presented with pelvic pain to primary care physicians and then were referred to gynecologists. Laparoscopy or laparotomy with endometrial biopsy and fimbrial minibiopsy revealed that prevalence of pelvic inflammatory was ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90639-9
更新日期：1991-01-01 00:00:00
abstract：:In many developing countries, services to prevent the mother-to-child transmission (PMTCT) of human immunodeficiency virus (HIV) operate with limited contact with HIV care and treatment programs, despite significant advances in the accessibility of both services. There is a need to deliver more complex multidrug PMTCT...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2007.03.068
更新日期：2007-09-01 00:00:00
abstract：:We investigated the effects of nifedipine, a calcium entry blocker, on the fetal and maternal circulation. Nifedipine was administered intravenously for 30 minutes to chronically instrumented pregnant ewes. Infusion of 5 micrograms.kg-1.min-1 resulted in a 30% to 50% increase in total and regional fetal cerebral blood...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(87)80104-7
更新日期：1987-10-01 00:00:00
abstract：:Four hundred twenty-nine patients were entered into four prospective randomized clinical studies between January 1, 1973, and July 1, 1979. The records of 395 of these were analyzed to determine the proportion of patients surviving 48 months after therapy initiation. Ninety-six patients (24%) were living at 48 months,...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/0002-9378(84)90543-x
更新日期：1984-04-01 00:00:00
abstract：:A somewhat paradoxic aspect of childbirth is the association of this physiologic process with acute pain. The experience of pain during labor is the result of complex processing of multiple physiologic and psychosocial factors on a woman's individual interpretation of nociceptive labor stimuli. The nature of labor pai...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1067/mob.2002.121427
更新日期：2002-05-01 00:00:00
