Abstract:
:Prospective pregnancy evaluation through the combined use of a radioimmunoassay (RIA) for the beta-subunit of human chorionic gonadotropin (beta-hCG) and ultrasound during the first 42 days of gestation after ovulation was performed on a population asymptomatic for first-trimester spontaneous abortion. One hundred forty-six ultrasonic observations in 98 pregnancies were made with simultaneous beta-hCG RIA performed in 80 patients. The following landmarks of normal gestational growth were identified: (1) Before 26 days, beta-HCG RIA permits definitive diagnosis of growing trophoblastic tissue, and serial samples allow doubling time computation for prognosis while ultrasound shows a nonspecific increasing decidual response within the uterus; (2) between 26 and 36 days after ovulation, serial beta-hCG samples continue to give doubling time results while ultrasonic demonstration of a gestational sac is normally seen by 28 days after ovulation; (3) the lack of fetal heart motion by 42 days after ovulation or within a gestational sac with a mean diameter of greater than 30 mm was prognostic of abortion; (4) the absence of a gestational sac by 28 days after ovulation or with a beta-hCG RIA greater than 1,000 ng/ml is suggestive of an ectopic pregnancy until proved otherwise.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Batzer FR,Weiner S,Corson SL,Schlaff S,Otis Cdoi
10.1016/0002-9378(83)90977-8subject
Has Abstractpub_date
1983-08-15 00:00:00pages
973-9issue
8eissn
0002-9378issn
1097-6868pii
0002-9378(83)90977-8journal_volume
146pub_type
杂志文章abstract::The relationship between low birth weight, intrauterine growth retardation, and preterm delivery in infants born at a perinatal center is described. Between 20% and 30% of infants born weighing 500 to 2000 gm and nearly 50% of infants born weighing 2001 to 2750 gm had intrauterine growth retardation. For infants withi...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(85)90543-5
更新日期:1985-08-15 00:00:00
abstract:OBJECTIVE:The purpose of this study was to describe obstetric outcomes after surgical abortion at > or = 20 weeks, and to identify risk factors for subsequent spontaneous preterm birth. STUDY DESIGN:Patients who had surgical abortion at > or = 20 weeks' gestation from 1996 to 2003 and received subsequent prenatal care...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2005.05.078
更新日期:2005-09-01 00:00:00
abstract::Steroid contraception was developed in the late 1950s and introduced into use in the early 1960s. It soon became apparent that estroprogestational agents had adverse systemic effects, mainly on the cardiovascular and blood coagulation system. During the 1970s, new contraceptive agents were developed that contained 3...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(16)32475-9
更新日期:1982-03-15 00:00:00
abstract:OBJECTIVE:Knowledge about the causes of placental dysfunction disorders is limited. We performed an intergenerational study, focusing on the risks of placental dysfunction disorders in mothers and fathers who had been born small for gestational age (SGA). STUDY DESIGN:Using linked generational data from the Swedish Me...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2011.05.009
更新日期:2011-11-01 00:00:00
abstract::X-ray evaluation of the pelvis plays a pivotal role in selecting term breech presentation for a possible trial of labor. Even minimal degrees of disproportion may have disastrous consequences for the aftercoming head. Our evaluation of x-ray pelvimetry by computerized tomography scanning suggests it is probably more a...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(85)90695-7
更新日期:1985-12-15 00:00:00
abstract:OBJECTIVE:Iron supplementation in pregnancy seems beneficial for neonatal/maternal outcomes, but it was associated with diabetes and hypertension in the general population. STUDY DESIGN:We investigated the association between iron supplementation during midpregnancy and metabolic/hypertensive abnormalities in 500 cons...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2009.04.049
更新日期:2009-08-01 00:00:00
abstract::Cervical cultures of 2013 consecutive obstetric patients with no history of genital herpes simplex virus infection were used to determine the frequency of asymptomatic herpes simplex virus shedding in labor. Four (0.20%) of these patients had positive cultures. None of the exposed neonates developed clinical evidence ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90034-8
更新日期:1988-03-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine whether activation of NF-kappaB and expression of COX-2 are associated with neutrophil infiltration in systemic vascular tissue of women with preeclampsia. STUDY DESIGN:Subcutaneous fat biopsies were obtained at cesarean section or abdominal surgery from preeclampti...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2006.08.038
更新日期:2007-01-01 00:00:00
abstract::Grand multiparity has been considered to be a factor in maternal and neonatal morbidity. In addition, families with seven or more children have been associated with low socioeconomic status. To minimize the confounding effect of the socioeconomic status, the outcome of grand multiparity has been investigated in a most...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90213-x
更新日期:1988-05-01 00:00:00
abstract:OBJECTIVE:Our aim was to determine the chorionic and amniotic types in multifetal pregnancies with transvaginal ultrasonography at > or = 14 weeks' gestation. STUDY DESIGN:Two hundred twelve multifetal pregnancies were scanned transvaginally at or before 14 weeks' gestation. The number of fetuses and the chorionic and...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(94)70291-8
更新日期:1994-03-01 00:00:00
abstract::Presented are the results over a 4-year period of the conservative management of cases of premature rupture of the membranes. Perinatal mortality in infants delivered more than 24 hours after rupture of the membranes is not higher than that in infants delivered within 24 hours of rupture of the membranes, if these res...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(83)90819-0
更新日期:1983-06-15 00:00:00
abstract:OBJECTIVE:The objective of this prospective observational study was to determine whether the preanalytical management of maternal plasma glucose samples had a significant effect on glucose measurements in obese pregnant women. STUDY DESIGN:Based on the accurate calculation of body mass index in the first trimester, ob...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2015.03.022
更新日期:2015-07-01 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::Twenty-three postmenopausal women with a median of 2 years past menopause (range, 1 to 12 years) and a median age of 52 years (range, 39 to 62 years) were recruited to participate in a longitudinal study designed to investigate the factors that influence the increase in bone density with subcutaneous estradiol and tes...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)90608-a
更新日期:1990-11-01 00:00:00
abstract::Diabetic ketoacidosis may occur in women treated with intravenous beta-sympathomimetic agents for tocolysis. We describe diabetic ketoacidosis and transient severe insulin resistance in a woman with diabetes who was treated with subcutaneous terbutaline infusion. Subcutaneous terbutaline infusion may precipitate trans...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)91185-f
更新日期:1990-08-01 00:00:00
abstract:OBJECTIVE:The objective was to evaluate whether the rate of neonatal group B streptococcal infection could be reduced by screening for group B streptococci during the third trimester of pregnancy. STUDY DESIGN:Two periods in which different screening and treatment protocols were applied were compared. In period A all ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(98)70063-8
更新日期:1998-09-01 00:00:00
abstract:OBJECTIVE:Our aim was to investigate the influence of vaginal colonization with specific microorganisms on the relationship between sexual intercourse during pregnancy and preterm delivery. STUDY DESIGN:As part of a multicenter, prospective study interviews and physical examinations were conducted with and genital cul...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(93)90484-z
更新日期:1993-02-01 00:00:00
abstract:OBJECTIVE:This study was undertaken to determine whether maternal posture (left lateral recumbent vs semi-Fowler position) had any effect on nonstress test results when the test was performed for a shortened period (10 minutes). STUDY DESIGN:In this randomized clinical trial of 108 patients with singleton pregnancies ...
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.2000.105443
更新日期:2000-05-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine whether pre-B-cell colony-enhancing factor is a secreted cytokine in the human amnion and to study its chemotaxic and antiapoptotic properties. STUDY DESIGN:Pre-B-cell colony-enhancing factor secretion was studied from amniotic epithelial-like WISH cells and primary...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.11.003
更新日期:2005-07-01 00:00:00
abstract::Estrogen receptors and progesterone receptors were measured in tumors from patients with previously untreated endometrial carcinoma before and after a 5-day course of tamoxifen citrate. On initial biopsy, 13 of 25 tumors (52%) were progesterone receptor-positive, whereas 21 of 25 tumors (84%) were progesterone recepto...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(84)90187-x
更新日期:1984-05-15 00:00:00
abstract:BACKGROUND:The established method of screening for preeclampsia is to identify risk factors from maternal demographic characteristics and medical history; in the presence of such factors the patient is classified as high risk and in their absence as low risk. However, the performance of such an approach is poor. We dev...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2018.11.1087
更新日期:2019-02-01 00:00:00
abstract:OBJECTIVE:The objective of the study was to examine risk factors for postterm (gestational age >or= 42 weeks) or prolonged (gestational age >or= 41 weeks) pregnancy. STUDY DESIGN:We conducted a retrospective cohort study of all term, singleton pregnancies delivered at a mature, managed care organization. The primary o...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2009.02.034
更新日期:2009-06-01 00:00:00
abstract::To determine the microbiologic etiology of acute salpingitis, laparoscopy was used in 26 patients to obtain specimens for a variety of microorganisms directly from the fallopian tube. Simultaneous culdocentesis was performed to obtain peritoneal fluid for microbiologic analysis. A variety of microorganisms were isolat...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(79)90798-1
更新日期:1979-05-01 00:00:00
abstract::A case of unilateral porencephalic cyst as a result of intravascular intrauterine transfusion is reported. Although other factors may have contributed, fetal bradycardia and relative hyperviscosity as a result of increased fetal hematocrit value were considered to be related to this event. Because some authors recomme...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(91)90227-i
更新日期:1991-07-01 00:00:00
abstract:OBJECTIVES:Our goals were (1) to determine whether hypertension, proteinuria, and glomerular endotheliosis can be produced by chronic reduction of lower aortic pressure in pregnant rhesus monkeys and (2) to study the time course of the development of hypertension by means of longitudinal arterial blood pressure measure...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(93)90171-e
更新日期:1993-07-01 00:00:00
abstract:OBJECTIVE:Prostaglandins reduce cervical resistance by reorganizing collagen fibrils. Proteoglycans are involved in collagen fibril organization and structure. We evaluated the changes in proteoglycan composition induced by prostaglandin E(2) (PGE(2)). STUDY DESIGN:Prostaglandins were administered intravaginally to in...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2007.11.024
更新日期:2008-05-01 00:00:00
abstract:OBJECTIVE:The recommendation to perform a perimortem cesarean delivery within 4 minutes of maternal cardiac arrest was introduced in 1986. This recommendation was based on the assumptions that cardiopulmonary resuscitation is ineffective in the third trimester because of aortocaval compression, and that fetal and perha...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2005.02.038
更新日期:2005-06-01 00:00:00
abstract:OBJECTIVE:Maternal floor infarction of the placenta is characterized by gross placental abnormalities and histologic evidence of X-cell proliferation. Previously, pregnancy-associated major basic protein has been localized to the placental X cell and identified at elevated levels in serum and amniotic fluid in all norm...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(11)91716-5
更新日期:1992-11-01 00:00:00
abstract::The activity of smooth muscles in the cervix is one of the relevant factors for its dilatation during labor, but in humans it has not yet been sufficiently studied. Muscular activity may be observed by measuring electromyographic phenomena. In 60 parturient women of different parity and with various degrees of cervica...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(87)90080-9
更新日期:1987-03-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the association between preeclampsia and 3 relatively common mutations that are important in the development of vascular disease and thrombosis; these are similar to conditions observed in pregnancies complicated by preeclampsia. STUDY DESIGN:Deoxyribonucleic acid wa...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2001.110411
更新日期:2001-05-01 00:00:00