Abstract：
:The excess risk of nonfatal myocardial infarction among users of oral contraceptives observed in England and Wales can be explained in terms of the high proportion of smokers in the study population. Among nonsmokers, the relative risk associated with the use of oral contraceptives is estimated to be 2 to 1, which is not statistically significant (P = 0.28, Fisher's exact probability test). The present analysis suggests that smoking be considered as another contraindication for the prescription of oral contraceptives. The results further indicate that those women who smoke as well as use oral contraceptives and are interested in reducing the risk of nonfatal mycardial infarction should be encouraged to give up smoking. The relative risk of nonfatal myocardial infarction associated with the use of oral contraceptives observed in a society can vary between 0.9 to 1 and 11.7 to 1, depending upon the proportion of smokers. From the public health point of view, the reduction in the excess risk of nonfatal myocardial infarction achieved by eliminating smoking is estimated to be much more than can be achieved by eliminating the use of oral contraceptives.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Jain AKdoi
10.1016/0002-9378(76)90539-1subject
Has Abstractpub_date
1976-10-01 00:00:00pages
301-7issue
3eissn
0002-9378issn
1097-6868pii
0002-9378(76)90539-1journal_volume
126pub_type
杂志文章abstract：:The effects of acute methadone exposure on fetal behavioral activity were investigated in 10 unanesthetized fetal lamb preparations. Fetal behavioral activity was interpreted indirectly from the electrocorticogram (ECoG), electromyogram, electrooculogram, blood pressure, heart rate (FHR), and breathing movements (FBMs...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)91056-6
更新日期：1983-05-15 00:00:00
abstract：OBJECTIVE:This study was undertaken to assess the value of minor ultrasonographic markers in predicting significant karyotypic abnormalities. STUDY DESIGN:A total of 2743 fetuses (14-24 weeks' gestation) prospectively underwent a detailed ultrasonographic survey before genetic amniocentesis. Criteria for 8 minor ultra...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(99)70322-4
更新日期：1999-10-01 00:00:00
abstract：OBJECTIVE:Our objectives were to establish an outpatient program for uterine artery embolization of fibroids and to monitor the following: percentage of patients who required immediate hospitalization or admission within 2 weeks, outcomes in terms of the degree of ultrasound regression of the fibroids, patient satisfac...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.114863
更新日期：2001-06-01 00:00:00
abstract：BACKGROUND:Age-related decline in reproductive potential is mainly due to the increased incidence of aneuploidy. Furthermore, 2 recent studies have shown that euploid embryos of older women may have a lower implantation potential compared to those of younger women, suggesting that aging might compromise embryos beyond ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2018.11.1103
更新日期：2019-04-01 00:00:00
abstract：OBJECTIVES:Our purpose was to evaluate factors that may influence perinatal outcomes in the very-low-birth-weight infant with breech presentation. STUDY DESIGN:An observational study that included all consecutive singletons and twins with the first fetus with breech presentation weighing between 500 and 1500 gm delive...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(94)70074-5
更新日期：1994-07-01 00:00:00
abstract：:Prostacyclin is a potent vasodilator produced by both maternal and fetal tissues that dilates the umbilical placental vasculature in vitro. To test the hypothesis that prostacyclin dilates the fetal placental circulation in vivo, we measured blood flow by the radioactive microsphere technique in six unanesthetized nea...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90303-7
更新日期：1989-04-01 00:00:00
abstract：OBJECTIVE:Our aim was to compare plasma drug levels in patients receiving ritodrine intravenously with those in patients receiving ritodrine orally at recommended dosages. STUDY DESIGN:Plasma samples from 20 pregnant patients treated with intravenous ritodrine (50 to 300 micrograms/min), 9 patients treated with oral r...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(93)90054-m
更新日期：1993-10-01 00:00:00
abstract：:Tubal biopsy specimens were obtained at the time of tubal anastomosis in 26 previously sterilized women. Scanning electron microscopy showed that half the patients had abnormalities of tubal mucosa, including loss of mucosal folds, deciliation, and polyposis. These pathologic conditions, the morphologic features of wh...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(80)90015-0
更新日期：1980-09-01 00:00:00
abstract：:The risk of infection from puerperal tubal ligation is studied 1, 2, 3, and 5 days postpartum. Aliquots of 52 oviduct homogenates and 26 endometrial saline aspirates were cultured in serum. PPLO, tryptic soy, and thioglycolate broth, and blood, PPLO, and chocolate agar. A Brown and Brenn Gram stain was run on ovidu...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)33944-8
更新日期：1970-06-15 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine if gap junctions are a necessary component of the human laboring uterus and if their presence in myometrium is a prerequisite for both term and preterm labor. STUDY DESIGN:We obtained 27 human myometrial samples at cesarean section or nongravid hysterectomy. Gap jun...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)90806-0
更新日期：1993-05-01 00:00:00
abstract：:An antiserum to 13,14-dihydro-15-keto-prostaglandin F2alpha (PGF2alphaM) was prepared and a radioimmunoassay evaluated in various reproductive states. PGF2alphaM plasma concentration was 63.6 +/- 10.3 pg/ml (mean +/- SEM) in cycling women. The concentration fluctuated throughout the menstrual cycle and pregnancy, but ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)33031-9
更新日期：1979-06-01 00:00:00
abstract：BACKGROUND:Despite considerable public health burden, uterine fibroid population-based incidence estimates are few. Secular trends over time are even more limited. OBJECTIVE:We sought to evaluate the incidence, 10-year secular trends, and prevalence of uterine fibroid diagnoses and describe the proportion of symptomat...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2018.09.039
更新日期：2018-12-01 00:00:00
abstract：:Pelvic inflammatory disease is a major medical problem that causes serious complications in a large number of the female population in many developing countries. It is estimated that between 20% and 30% of gynecologic admissions in these countries are due to PID. The alarmingly high prevalence of gonorrhea is probably...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(80)91114-x
更新日期：1980-12-01 00:00:00
abstract：:With the establishment of a normal range of values for the growth of the ultrasound fetal femur length, a new approach for the study of growth-retarded fetuses is suggested. Ultrasound femur length was measured on a group of "high-risk" pregnancies, and its ability to differentiate the symmetrically small from the asy...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(82)90390-8
更新日期：1982-09-01 00:00:00
abstract：:Although previous studies have suggested that the breech infant weighing less than 1,500 gm benefits from cesarean section, the published results have not demonstrated statistically significant differences. We have evaluated pediatric outcome data for 240 breech infants and 525 vertex infants who weighed less than 1,5...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90807-4
更新日期：1983-07-01 00:00:00
abstract：:Recent progress in our understanding of uterine smooth muscle contraction is reviewed. We no longer believe that actin-myosin interaction in the myometrium occurs through activation of the thin filament; but it is triggered by calcium-dependent phosphorylation of myosin in the thick filament. Calcium is now thought to...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/s0002-9378(87)80320-4
更新日期：1987-11-01 00:00:00
abstract：OBJECTIVE:Diagnosis of myocardial infarction in pregnant women on the basis of changes in biochemical markers is complicated by the release of some of these markers from noncardiac tissue sources. We compared troponin I levels with those of other markers in normal pregnant women. STUDY DESIGN:In 51 healthy women at te...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(99)70161-4
更新日期：1999-01-01 00:00:00
abstract：BACKGROUND:Preterm premature rupture of membranes complicates 2-3% of pregnancies. Many institutions have advocated for the use of azithromycin instead of erythromycin. This is secondary to national shortages of erythromycin, ease of administration, better side effect profile, and decreased cost of azithromycin as comp...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.ajog.2019.03.009
更新日期：2019-08-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to evaluate whether maternal tobacco use is associated with an attenuation in fetal birthweight among women with nutritional and uteroplacental constraints. STUDY DESIGN:A population-based retrospective analysis of term (37 weeks or longer) singleton pregnancies delivered in Ut...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2007.06.078
更新日期：2008-01-01 00:00:00
abstract：:In normal and diabetic pregnancies, the placenta functions as a complex endocrine gland that modulates all classes of maternal nutrients to the fetus. The metabolic alterations of normal pregnancy are diabetogenic and associated with modest resistance to endogenous insulin. Pregnant women with carbohydrate intolerance...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(83)90822-0
更新日期：1983-06-15 00:00:00
abstract：OBJECTIVE:This study was undertaken to measure fetal renal volume by means of three-dimensional ultrasonography and to use those data to establish the accurate constant and formula for fetal renal volume assessment with two-dimensional ultrasonography. STUDY DESIGN:Singleton fetuses between 15 and 40 weeks' gestation ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(00)70227-4
更新日期：2000-02-01 00:00:00
abstract：:Like other forms of ectopic gestation, cervical pregnancy is a serious complication with potentially life-threatening consequences. Excessive bleeding almost invariably follows an attempt to evacuate this rare ectopic pregnancy. In most reported cases, hysterectomy has been required to control the severe hemorrhage. T...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(79)90878-0
更新日期：1979-05-15 00:00:00
abstract：:Although the mortality rate after herpes simplex virus type 2 inoculation was not significantly different between pregnant mice and nonpregnant mice, systemic interferon production was very high during late pregnancy compared with that in nonpregnant mice. Antiviral activity was detected in placentas from all noninfec...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(85)80127-7
更新日期：1985-10-01 00:00:00
abstract：OBJECTIVE:The purposes of this study were to compare the clinical characteristics of extremely low birth-weight infants (501-1000 g birth weight) who die early (<12 hours of age) with those of infants who die >12 hours after birth and infants who survive to neonatal intensive care unit discharge and to develop a model ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.121652
更新日期：2002-04-01 00:00:00
abstract：OBJECTIVE:Our purpose was to investigate levels of fetal fibronectin in maternal plasma, amniotic fluid, and umbilical cord plasma from patients with severe preeclampsia. STUDY DESIGN:The study group comprised 20 patients with severe preeclampsia (group A). An antepartum comparison group was composed of 20 healthy pat...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(95)90587-1
更新日期：1995-02-01 00:00:00
abstract：OBJECTIVE:Our purpose was to examine the cellular localization of inhibin subunits and messenger ribonucleic acid expressions for the inhibin subunits and the serum levels of inhibin A and inhibin B in human ovarian sex cord stromal tumors. STUDY DESIGN:We examined the immunohistochemical localization of the inhibin s...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70090-5
更新日期：1997-12-01 00:00:00
abstract：:During a 12-year period, 254 cases of eclampsia were managed at this center. Eighty patients (32%) did not have edema, 58 (23%) had "relative hypertension," and 49 (19%) did not have proteinuria at the time of convulsions. Eclampsia developed at less than or equal to 20 weeks in 6 patients and beyond 48 hours post par...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)91123-t
更新日期：1990-09-01 00:00:00
abstract：BACKGROUND:Uterine leiomyosarcoma is a rare and aggressive gynecologic malignancy originating in the myometrium of the uterine corpus that tends to recur even after complete surgical excision. Current therapeutic agents have only modest effects on uterine leiomyosarcoma. Although antibodies and antibody-drug conjugates...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2020.08.028
更新日期：2020-08-19 00:00:00
abstract：OBJECTIVE:This study was undertaken to clone and express a recombinant human zona pellucida protein 3 and to characterize its biologic activities as a sperm ligand and an inducer of the acrosome reaction. STUDY DESIGN:Human ovarian teratocarcinoma (PA-1) cells were transfected with an expression vector containing huma...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.113849
更新日期：2001-04-01 00:00:00
abstract：:Sterilization by fimbriectomy has been thought to be irreversible. The present report describes the surgical approach and results in nine patients after microsurgical tubal reconstruction and indicates that repeated pregnancy is possible after fimbriectomy reversal. Preoperative radiographic studies were used to docum...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(80)90775-9
更新日期：1980-05-15 00:00:00
