Abstract：
OBJECTIVE:We used the Danish National Birth Cohort to estimate the effect of shift work on the duration of pregnancy and birth weight. STUDY DESIGN:In the Danish National Birth Cohort (1998-2001), we identified women (and their singleton births): 32465 women with daytime work, 1038 women with fixed evening work, 400 women with fixed night work, 3137 women with rotating shift work (without night), and 3197 women with rotating shift work (with night) during pregnancy (first and second trimester). Birth outcomes were collected by linkage to the Central Population Register, the National Patient Register, and the National Birth Register. Gestational age at birth and birth weight were analyzed by means of general linear regression and logistic regression. RESULTS:Mean gestational age at birth and birth weight at term for daytime work were 281 days and 3616 g, although 281 days and 3586 to 3626 g for shift work. There were no statistically significant differences in gestational age at birth or birth weight at term between any types of shift work and daytime work. Fixed night work had a high risk of postterm birth (odds ratio, 1.35; 95% CI, 1.01-1.79); fixed evening work had a high risk of full-term low birth weight (odds ratio, 1.80; 95% CI, 1.10-2.94); and shift work as a group showed a slight excess of small-for-gestational-age babies (odds ratio, 1.09; 95% CI, 1.00-1.18). The risk of postterm birth was modified by maternal occupation. Industrial workers with fixed night work had a high risk of postterm birth. CONCLUSION:Our results suggest that shift work during pregnancy had limited effects on indicators of fetal growth. Night work may prolong the duration of pregnancy and reduce fetal growth, especially among industrial workers.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Zhu JL,Hjollund NH,Olsen J,National Birth Cohort in Denmark.doi
10.1016/j.ajog.2003.12.002subject
Has Abstractpub_date
2004-07-01 00:00:00pages
285-91issue
1eissn
0002-9378issn
1097-6868pii
S0002937803020829journal_volume
191pub_type
杂志文章abstract：BACKGROUND:Patients with ovarian cancer tend to receive the highest quality of care at high-volume cancer centers with gynecological oncologists. However, the care that they receive prior to gynecological oncology consult has not been examined. We investigated the quantity and quality of care given to patients with ova...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2018.01.015
更新日期：2018-04-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to test the effects of varying the amount of physical practice and mental imagery rehearsal on learning basic surgical procedures. STUDY DESIGN:Using a sample of 65 second-year medical students, 3 randomized groups received either: (1) 3 sessions of physical practice on suturing...
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：10.1016/j.ajog.2004.07.075
更新日期：2004-11-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to determine which cervical ripening method, laminaria placement or extra-amniotic saline solution infusion, was associated with the shorter interval from induction to delivery in the second trimester. STUDY DESIGN:Women admitted for indicated second-trimester labor induction with a...
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.2001.112903
更新日期：2001-05-01 00:00:00
abstract：BACKGROUND:The Twin Birth Study randomized women with uncomplicated pregnancies, between 32(0/7)-38(6/7) weeks' gestation where the first twin was in cephalic presentation, to a policy of either a planned cesarean or planned vaginal delivery. The primary analysis showed that planned cesarean delivery did not increase o...
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.2015.12.051
更新日期：2016-03-01 00:00:00
abstract：:This article addresses the question of whether the uterine cavity is normally sterile and reviews the difficulties in conducting microbiologic studies of the endometrium, the limitations of conventional microbiologic techniques (cultivation-dependent), and the potential contribution of molecular microbiology to examin...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2005.11.050
更新日期：2006-03-01 00:00:00
abstract：BACKGROUND:The incidence of placenta accreta spectrum is rising. Management is most commonly with cesarean hysterectomy. These deliveries often are complicated by massive hemorrhage, urinary tract injury, and admission to the intensive care unit. Up to 60% of patients require transfusion of ≥4 units of packed red blood...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2019.08.035
更新日期：2020-02-01 00:00:00
abstract：:Cholesterol metabolism was studied in cells from two established gynecologic cancer cell lines which were maintained in monolayer cultures. The cell lines were derived and established from poorly differentiated epidermoid cervical carcinoma (EC-50) and endometrial adenocarcinoma (AC-258). The specific activity of 3-hy...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(81)90952-2
更新日期：1981-04-15 00:00:00
abstract：:We describe the preparation and usage of positive and negative quality control standards for the proline aminopeptidase assay of vaginal secretions as an indicator of bacterial vaginosis. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(89)80075-4
更新日期：1989-03-01 00:00:00
abstract：:Intravenous hydralazine was administered to 16 spontaneously hypertensive rats on day 21 of gestation. The radioactive labeled microsphere technique was used to assess the change in organ perfusion produced by the drug. Vascular resistance to most organs was decreased, except to the placentas, stomach, and cecum, wher...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(87)90283-3
更新日期：1987-02-01 00:00:00
abstract：OBJECTIVE:Our objective was to evaluate women with clinical signs or chemical evidence of androgen excess by corticotropin stimulation testing. STUDY DESIGN:Seventy-six women with evidence of androgen excess were evaluated by corticotropin stimulation testing. Results were examined by plasma levels of dehydroepiandros...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)91406-9
更新日期：1992-08-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine the effectiveness of postpartum dexamethasone in patients with hemolysis, elevated liver enzymes, and low platelets (HELLP) syndrome. STUDY DESIGN:A prospective, randomized, double-blind trial was conducted in which 105 women with HELLP syndrome were enrolled and as...
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.2007.10.797
更新日期：2008-03-01 00:00:00
abstract：:Twin-twin transfusion syndrome associated with acute polyhydramnios in one sac and severe oligohydramnios in the other, which characteristically is diagnosed between 18 and 28 weeks, is associated with a high mortality rate for the involved twins. Patients who are managed without intervention have essentially 100% per...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)90618-h
更新日期：1990-11-01 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：OBJECTIVE:We tabulated first-trimester ultrasonography findings in women with recurrent pregnancy loss and determined the rate of subsequent pregnancy loss and live births after demonstration of a live embryo. STUDY DESIGN:Sixty-seven women with three or more recurrent miscarriages underwent first-trimester ultrasonog...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/s0002-9378(12)90896-0
更新日期：1993-01-01 00:00:00
abstract：:Continuous 24-hour observations of fetal breathing were performed in 20 normal, pregnant women between 24 and 28 weeks' gestation by real-time ultrasound. Fetuses made breathing movements approximately 14% of the time. No change in breathing activity after a maternal meal was observed, but a significant increase in th...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(88)90146-9
更新日期：1988-02-01 00:00:00
abstract：:Clonidine is a recommended antihypertensive for use during pregnancy, although little is known of its fetal effects. This study examines the effects of clonidine on breathing and sleep-state cycling in fetal lambs. Clonidine was infused into a fetal lateral ventricle for up to 24 hours at 128 to 135 days' gestation. C...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)91220-7
更新日期：1990-08-01 00:00:00
abstract：:The sinusoidal fetal heart rate pattern is a phenomenon of elusive pathophysiologic features and uncertain clinical significance. We present a case of sinusoidal fetal heart rate that occurred in association with fetal breathing. The degree and type of synchrony between the sinusoidal fetal heart rate and breathing mo...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(89)80060-2
更新日期：1989-03-01 00:00:00
abstract：OBJECTIVE:Our purpose was to compare the incidence and interrelationships of uteroplacental vasculopathy and chronic inflammatory and placental vasoocclusive lesions in preeclampsia and spontaneous delivery before 32 weeks' gestation. STUDY DESIGN:Review of singleton live-born nonanomalous infants born at 22 to 32 wee...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(95)91333-5
更新日期：1995-10-01 00:00:00
abstract：BACKGROUND:While there is an increasing trend of ovarian conservation at the time of surgical treatment for young women with stage I cervical cancer, the risk for subsequent ovarian cancer after ovarian conservation has not been well studied. OBJECTIVE:We sought to examine the incidence of and risk factors for metachr...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2017.06.019
更新日期：2017-11-01 00:00:00
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journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2018.09.004
更新日期：2018-11-01 00:00:00
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journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2020.01.045
更新日期：2020-08-01 00:00:00
abstract：OBJECTIVE:Our objective was to identify novel genes that are expressed in temporally and spatially restricted patterns during mouse embryonic development and organogenesis. STUDY DESIGN:Two genetic trapping reporter constructs that lack transcriptional regulatory sequences were introduced independently into transcript...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(93)90643-w
更新日期：1993-09-01 00:00:00
abstract：OBJECTIVE:Photodynamic therapy is a technique in which tissue is irradiated with light after the use of a photosensitizing drug that produces singlet oxygen, which has a cytotoxic effect. The feasibility of using photodynamic therapy with photofrin II for endometrial ablation was studied. STUDY DESIGN:Fifty-eight rabb...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(92)91787-b
更新日期：1992-12-01 00:00:00
abstract：:The effects of single doses of 60Co whole-body irradiation were studied in about 600 inbred primiparous Swiss-Webster mice on gestational day 9, 10, 11, or 12. The embryos and their placentas were weighted from day 13 to 18. A reference model surveyed the response of the conceptus to varying doses. A significant reduc...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90889-3
更新日期：1975-11-15 00:00:00
abstract：OBJECTIVES:Preeclampsia is associated with hypertension, fetal growth retardation, and proteinuria. We hypothesized that impaired vascular nitric oxide synthesis during pregnancy may be an important causal factor in preeclampsia. STUDY DESIGN:An inhibitor of nitric oxide synthase, L-nitro-arginine methyl ester, or a n...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(93)90299-x
更新日期：1993-11-01 00:00:00
abstract：:The use of umbilical vein injection of oxytocin was compared with traditional management of the third stage of labor. Pregnant women were randomized to receive intravenous oxytocin after the delivery of the placenta (n = 25) or oxytocin via the umbilical vein immediately after cord clamping (n = 25). Those who receive...
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：10.1016/0002-9378(89)90122-1
更新日期：1989-01-01 00:00:00
abstract：:Vaginal administration of prostaglandin analogues resulted in cervical changes that facilitated dilatation and evacuation in 80 patients in the late first trimester and the second trimester of pregnancy. When 0.5 mg and 1.0 mg of 15(S)-15-methyl-prostaglandin F2 alpha (15-ME-PGF2 alpha) was compared to 30 and 60 mg of...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(82)90179-x
更新日期：1982-12-15 00:00:00
abstract：OBJECTIVE:Our purpose was to evaluate in a sheep model for endoscopic fetal surgery the impact of nitrous oxide-gas amniodistention compared with fluid amniodistention on duration of surgery, hemorrhagic events, and fetomaternal acid-base status. STUDY DESIGN:Pregnant ewes (n = 16) at 92 to 104 days of gestation (term...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.120482
更新日期：2002-03-01 00:00:00
abstract：OBJECTIVE:We sought to relate the frequency of maternal cell contamination in amniotic fluid samples that were submitted to a single laboratory for cytogenetic analysis to the experience and training of the physician who performed the amniocentesis. STUDY DESIGN:We reviewed the database of a single cytogenetics labora...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2005.05.033
更新日期：2006-01-01 00:00:00
abstract：OBJECTIVE:Absent end-diastolic blood flow in the umbilical artery identifies growth-restricted fetuses at high risk of perinatal mortality and severe morbidity. We explored antenatal variables predictive of perinatal mortality or severe neonatal morbidity in such fetuses. STUDY DESIGN:We accessed a cohort of 39 single...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2005.07.032
更新日期：2005-09-01 00:00:00
