Abstract:
:Rhesus monkeys weighing 6-8 kg and demonstrating regular menstrual cycles were used to delineate the relationships between the circadian patterns in spontaneous uterine activity, the urinary excretion of 2 catecholamines, norepinephrine and epinephrine, and the alterations in adrenergic neuroreceptors. In Experiment 1 norepinephrine and epinephrine concentrations were determined by the Zuspan and Cooley method. These values were correlated with the circadian patterns of spontaneous uterine activity. In Experiment 2 the effect on the circadian pattern evidenced by spontaneous uterine activity of pharmacologic depletion of catecholamines as well as selective blocking of alpha and beta adrenergic receptors, were evaluated. Constant iv infusion of reserpine was used to suppress catecholamines as well as selective blocking of alpha and beta adrenergic receptors, were evaluated. Constant iv infusion of reserpine was used to suppress catecholamines. In Experiment 1, lowest values occurred in the secretory phase during the periods of darkness, and highest values occurred in the proliferative phase during periods of light. Intrauterine pressure and norepinephrine excretion consistently exhibited diurnal variations conforming to sine curves and were statistically correlated (r = .838, p less than .001). In Experiment 2 the continuous infusion of reserpine produced a dose-related reduction in the average values and circadian patterns of uterine activity and norepinephrine and epinephrine excretion. Baseline resting pressures were reduced by phentolamine infusion. The frequency of contractions were also reduced and the diurnal variations of uterine activity abolished. Beta blockade increased the resting pressure and the amplitude of contractions. The results suggest that adrenergic receptors and catecholamines have a causal role in the occurrence of spontaneous variations in and the establishment of the circadian pattern of uterine activity.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Harbert GM Jr,Zuspan FPdoi
10.1016/0002-9378(77)90819-5subject
Has Abstractpub_date
1977-09-01 00:00:00pages
51-60issue
1eissn
0002-9378issn
1097-6868pii
0002-9378(77)90819-5journal_volume
129pub_type
杂志文章abstract::Seventy cases of ectopic pregnancy associated with an IUD comprised 10% of all ectopics in a 9 year period. This increased to 15% in the last 19 months as more IUD's were in use. In two thirds of the ectopics the IUD had been in situ more than 1 year. Unusual bleeding and cramping attributed to the IUD obscured the di...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90843-7
更新日期:1976-07-15 00:00:00
abstract:OBJECTIVE:The purpose of this study was to describe the evaluation and management of synthetic mesh-related complications after surgery for stress urinary incontinence (SUI) and/or pelvic organ prolapse (POP). STUDY DESIGN:We conducted a multicenter, retrospective analysis of women who attended 4 US tertiary referral ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ajog.2013.10.012
更新日期:2014-02-01 00:00:00
abstract:BACKGROUND:The effect of maternal mood disorders on neonatal measurements is not well-defined. The Fetal Growth Studies-Singletons provide a unique opportunity to evaluate the relationship between perceived maternal stress and neonatal growth measurements. OBJECTIVE:The purpose of this study was to determine whether p...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ajog.2017.02.039
更新日期:2017-07-01 00:00:00
abstract:OBJECTIVE:We hypothesize that vascular endothelial growth factor, a known angiogenic and permeability factor that is locally expressed in fetal membranes and decidua, may be the primary regulator in the pathway that eventually leads to preterm premature rupture of membranes. Our objective was to test the hypothesis tha...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2002.127145
更新日期:2002-11-01 00:00:00
abstract:BACKGROUND:Fibroid tumors are the most common benign tumors in women of reproductive age. Treatment is usually indicated for those who are symptomatic, with different techniques being used. OBJECTIVE:The purpose of this study was to compare the long-term outcome of laparoscopic myomectomy with magnetic resonance-guide...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2018.09.002
更新日期:2018-10-01 00:00:00
abstract:OBJECTIVE:Women who deliver preterm infants may be at increased risk for cardiovascular disease, perhaps related to dyslipidemia. STUDY DESIGN:In a nested case control study of women with spontaneous preterm birth, cholesterol, high-density lipoprotein, low-density lipoprotein, and triglycerides were evaluated. Lipid ...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章
doi:10.1016/j.ajog.2007.04.024
更新日期:2007-12-01 00:00:00
abstract:BACKGROUND:Preeclampsia (PE) affects 2-3% of all pregnancies and is a major cause of maternal and perinatal morbidity and mortality. The traditional approach to screening for PE is to use a risk-scoring system based on maternal demographic characteristics and medical history (maternal factors), but the performance of s...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2015.11.016
更新日期:2016-05-01 00:00:00
abstract::Components of fetal behavioral state organization reflect the successful integration of the central nervous system, have a specific developmental timetable, and can be studied with fetal ultrasonographic techniques. To test the hypothesis that evaluation of state organization is a marker of abnormal central nervous sy...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(89)90380-3
更新日期:1989-09-01 00:00:00
abstract::Since previous data suggested hyperresponsiveness to human menopausal gonadotropin by women with low body weight, the daily dose was reduced to 1.5 ampules in patients undergoing in vitro fertilization weighing less than 55 kg. This allowed the extension of treatment to a minimum of 6 days. These changes were associat...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90778-8
更新日期:1988-01-01 00:00:00
abstract::The effects of intravenous cocaine on heart rate and blood pressure were studied in pregnant and oophorectomized nonpregnant ewes. In response to intravenous cocaine doses of 1.0 and 2.0 mg/kg, both pregnant and nonpregnant ewes demonstrated dose-dependent increases in systolic, diastolic, mean arterial, and pulse pre...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)90424-6
更新日期:1990-02-01 00:00:00
abstract::This article is from the "To The Point" series prepared by the Association of Professors of Gynecology and Obstetrics Undergraduate Medical Education Committee. The purpose of this review was to provide an overview of the importance of well-being in medical education. A literature search was performed by a Reference L...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2019.05.012
更新日期:2019-12-01 00:00:00
abstract:OBJECTIVE:Our objective was to ascertain long-term tolerability and effects of a novel, low-dosage continuous progestin-cyclic estrogen regimen on vasomotor flushing, vaginal bleeding patterns, bone density, and plasma lipoprotein lipids. STUDY DESIGN:Eighteen postmenopausal women with climacteric symptoms received lo...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(92)91842-x
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the continuing effectiveness of active management of labor, a protocol that involves early detection and correction of dystocia with oxytocin in spontaneous cephalic nulliparous labor, by analysis of the contribution of this cohort to a doubled overall nulliparous ce...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.05.072
更新日期:2004-09-01 00:00:00
abstract:OBJECTIVE:We assessed intraobserver and interobserver variations in the performance of the amniotic fluid index. STUDY DESIGN:A total of 34 women in the third trimester with intact membranes were examined twice by each of three examiners. The amniotic fluid index was measured once by each of the three examiners in ord...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(93)90386-w
更新日期:1993-04-01 00:00:00
abstract::Fifty-seven prenatal patients with no known exposure to the element mercury, or any of its compounds, were observed for change in whole blood total mercury concentration from the initial prenatal clinic examination through delivery and postpartum hospitalization. On hospital admission for labor and delivery, whole blo...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(82)90087-4
更新日期:1982-06-15 00:00:00
abstract::Decisions in regard to the management of patients with premature rupture of the membranes depend on the relative risks of prematurity, infection, and hypoxia for the fetus or neonate and infection and cesarean section for the mother. These risks vary primarily with gestational age. Because of the many variables and ne...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(85)90369-2
更新日期:1985-04-15 00:00:00
abstract:OBJECTIVES:This study details the incidence, by gestational age and birth weight, of specific neonatal morbidities in singleton neonates without major congenital anomalies. STUDY DESIGN:Data were prospectively collected on all deliveries at five tertiary centers in the United States during the years 1983 through 1986....
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(92)91551-k
更新日期:1992-06-01 00:00:00
abstract::We report a case of placenta accreta that was managed conservatively by uterine arterial embolization and subsequently was complicated by hematuria. Ultrasound revealed a calcified mass at the posterior bladder wall. A careful resection under cystoscopy was carried out without hemorrhagic complication. Pathologic exam...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2009.08.040
更新日期:2009-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to estimate the prevalence and impact upon quality of life of anal incontinence (AI) in women aged 18 to 65. STUDY DESIGN:Consecutive women presenting for general gynecologic care were given a bowel function questionnaire. Women with AI were prompted to complete the Fecal Incont...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ajog.2004.11.030
更新日期:2005-05-01 00:00:00
abstract:OBJECTIVE:Our purpose was to examine the hypothesis that the relaxant response to corticotropin-releasing factor is endothelium dependent and changes during pregnancy. STUDY DESIGN:Relaxant responses to cumulative concentrations of corticotropin-releasing hormone were measured in rings of thoracic aorta, precontracted...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(97)80042-7
更新日期:1997-01-01 00:00:00
abstract:OBJECTIVE:We have investigated the use of uterine artery Doppler waveform analysis in growth restricted fetuses delivered at > or =34 weeks. STUDY DESIGN:Included in the study were all consecutive euploid non-malformed singleton fetuses with accurate dating diagnosed as growth restricted (sonographic abdominal circumf...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2002.127137
更新日期:2002-10-01 00:00:00
abstract:BACKGROUND:Salpingectomy is recommended as a risk-reducing strategy for epithelial tubo-ovarian cancer. The gold standard procedure is complete tubal excision. OBJECTIVE:The purpose of this study was to assess the presence of residual fimbrial/tubal tissue on ovarian surfaces after salpingectomy. STUDY DESIGN:Prospec...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2017.06.004
更新日期:2017-10-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate which factors affect the occurrence of neonatal ultrasonographic evidence of severe cerebral lesions in the presence of intrauterine infection. STUDY DESIGN:From a cohort of 567 singleton neonates who were born between 24.0 and 31.6 weeks of gestation, we identified ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2008.06.059
更新日期:2008-10-01 00:00:00
abstract::Twelve normal parturients were studied with a continuous wave Doppler unit to assess changes in uterine and umbilical velocity waveforms during labor. The analysis of these waveforms included the peak systolic/end-diastolic ratio and the evaluation of a diastolic notch. Each woman served as her own control, and all fe...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(87)80342-3
更新日期:1987-07-01 00:00:00
abstract::Maternal heart rate (MHR), blood pressure (BP), the differential index (DI) describing the short-term component of fetal heart rate (FHR) variability, and the interval index (II) describing the long-term component were measured in eight subjects in the midtrimester before, during, and after the mothers smoked a standa...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(83)91013-x
更新日期:1983-07-15 00:00:00
abstract::Although the importance of sonography in modern obstetrics is undisputed, its role in the evaluation of the patient with gynecologic disease is less clear. We evaluated the role of pelvic sonography in the initial assessment of gynecologic patients. Standardized pelvic sonography was performed on patients scheduled to...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(84)90241-2
更新日期:1984-07-15 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::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::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:We sought to study neonatal outcomes in early preterm births by delivery route. STUDY DESIGN:Delivery precursors were analyzed in 4352 singleton deliveries, 24 0/7 to 31 6/7 weeks' gestation. In a subset (n = 2906) eligible for a trial of labor, neonatal mortality in attempted vaginal delivery (VD) was compa...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2012.06.023
更新日期:2012-08-01 00:00:00