Abstract:
OBJECTIVE:To estimate whether the use of specific types of assisted reproductive technology (ART) is associated with an increased risk of placenta-mediated pregnancy complications, which include preeclampsia, stillbirth, small for gestational age at birth, and placental abruption. METHODS:A population-based retrospective cohort study was conducted on singleton pregnancies conceived by different types of ART based on the 2004-2007 Ontario Niday Perinatal Database. Patients with fetal anomalies and maternal health problems were excluded as important confounders. Three exposed groups were created by the subtype of ART, including in vitro fertilization with or without intracytoplasmic sperm injection, intrauterine insemination, and ovulation induction. The nonexposed groups were the singleton pregnancies conceived naturally. For each exposed woman, four women from the nonexposed group were randomly matched by maternal age and parity. RESULTS:There were 2,118 exposed participants and 8,420 matched nonexposed participants in the study. The sample size provided 80% power for a relative risk of 2.0 of placenta-mediated adverse pregnancy outcomes with ART. After adjustment of potential confounders, including smoking, delivery hospital level, initiating time of prenatal care, average neighborhood income, fetal sex, and previous cesarean delivery, there was no association observed between different types of ART groups and the composite of placenta-mediated pregnancy complications. Intrauterine insemination was associated with a significantly increased risk of preeclampsia (12 [2.67%] odds ratio 2.2, 95% confidence interval 1.04-5.04) compared with the corresponding control group (23 [1.29%]). CONCLUSION:Assisted reproductive technology is not associated with an increased risk of the composite outcome of placenta-mediated pregnancy complications among singleton pregnancies. LEVEL OF EVIDENCE:II.
journal_name
Obstet Gynecoljournal_title
Obstetrics and gynecologyauthors
Sun LM,Walker MC,Cao HL,Yang Q,Duan T,Kingdom JCPdoi
10.1097/AOG.0b013e3181b76bd1subject
Has Abstractpub_date
2009-10-01 00:00:00pages
818-824issue
4eissn
0029-7844issn
1873-233Xpii
00006250-200910000-00017journal_volume
114pub_type
杂志文章abstract::This investigation has reexamined the measurement of the femur length and the use of this measurement as a growth and dating parameter. Straight-line measurements of shaft length were found to be smaller than measurements made along the bone curvature. However, the maximum difference did not exceed 2 mm. Thus, because...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1985-07-01 00:00:00
abstract:OBJECTIVE:Emerging data suggest that oophorectomy at the time of hysterectomy for benign indications may increase long-term morbidity and mortality. We performed a population-based analysis to estimate the rates of oophorectomy in women undergoing hysterectomy for benign indications. METHODS:The Perspective database w...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e3182887a47
更新日期:2013-04-01 00:00:00
abstract::This study was designed to compare single-point prevalence estimates with a cumulative prevalence estimate of human papillomavirus (HPV) type 16 in cervical smears. The influence of the menstrual cycle and the long-term effect of HPV 16 positivity on the development of cervical intraepithelial neoplasia (CIN) were mon...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1992-05-01 00:00:00
abstract:OBJECTIVE:Bacterial vaginosis is a common infectious disorder. Although known since ancient times, little progress has occurred in identifying causal factors. Our aims were to study the bacterial community structure and the spatial organization of microbiota on the epithelial surfaces of vaginal biopsy specimens. METH...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000183594.45524.d2
更新日期:2005-11-01 00:00:00
abstract:OBJECTIVE:To compare, in pregnant women, the endocervical cell yield of the Cytobrush Cell Collector and the Cervex-Brush Cell Sampler with the standard cotton swab, and to determine the incidence of serious adverse events associated with the collection techniques. METHODS:In a randomized, controlled clinical trial, 3...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1994-10-01 00:00:00
abstract:OBJECTIVE:To test the performance characteristics of a new DNA probe designed for the rapid identification of heavy colonization of the genital tract with group B streptococci. METHODS:Vaginal and combined vaginal-perianal samples were collected from 193 pregnant women and cultured on colistin-nalidixic acid agar plat...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章
doi:10.1016/0029-7844(95)00199-2
更新日期:1995-10-01 00:00:00
abstract::Vaginal hysterectomy fulfills the evidence-based requirements as the preferred route of hysterectomy for benign gynecologic disease. Despite proven safety and effectiveness, the vaginal approach for hysterectomy has been and remains underused in surgical practice. Factors associated with underuse of vaginal hysterecto...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000000398
更新日期:2014-09-01 00:00:00
abstract:OBJECTIVE:To test the null hypothesis that there are no differences in incidence of perineal and vaginal lacerations in primiparous black and white women. METHODS:We reviewed University of Michigan Hospital delivery records, from July 1996 to December 1998, of black and white women 18 years and older and at least 35 w...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(00)00956-x
更新日期:2000-10-01 00:00:00
abstract:OBJECTIVE:To compare the effectiveness of commercially available probe covers with less expensive condoms. METHODS:During a 10-month period, sonographers performed endovaginal ultrasound examinations on patients by randomly testing either commercially available probe covers or condoms on the vaginal probe. After use, ...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0029-7844(95)00336-3
更新日期:1996-01-01 00:00:00
abstract:OBJECTIVE:To determine the prevalence of stress, urge, and mixed urinary incontinence and associated risk factors in postmenopausal women. METHODS:Before enrollment in a 4-year, randomized trial of combination hormone therapy to prevent coronary heart disease, 2763 participants completed questionnaires on prevalence a...
journal_title: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:10.1016/s0029-7844(99)00263-x
更新日期:1999-07-01 00:00:00
abstract::The effect on labor of administering ritodrine after a premature rupture of the membranes (PROM) was studied in a double-blind trial in 30 patients. The patients were selected according to the following criteria: 28 to 36 weeks' gestation, only 1 fetus, cervix dilated 4 cm or less, and absence of pyrexia or other sign...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章
doi:
更新日期:1980-02-01 00:00:00
abstract::The results of 1000 consecutive unselected cases of induction of labor for medical or obstetric reasons using prostaglandin E2 suppositories are presented. The overall rate of failed induction resulting in a cesarean section in those patients with an unfavorable cervix has fallen from 42 to 2.5%. Only 27% of the entir...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1981-11-01 00:00:00
abstract:OBJECTIVE:To compare the efficacy and acceptability of same-day misoprostol and overnight laminaria for cervical ripening before early second-trimester surgical abortion. METHODS:We performed a randomized, double-blinded, controlled trial comparing 400 microg of vaginal misoprostol, given 3-4 hours preoperatively, wit...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1097/01.AOG.0000168629.17326.00
更新日期:2005-08-01 00:00:00
abstract::The issue of race and ethnicity within obstetrics and gynecology has come to the forefront in the current social and political climate. Understanding the ill effects of racism within the clinical space requires an acknowledgment of both the ongoing problem and current limitations in the state of knowledge and praxis a...
journal_title:Obstetrics and gynecology
pub_type: 社论
doi:10.1097/AOG.0000000000002868
更新日期:2018-10-01 00:00:00
abstract::The weights of 101 neonates delivered within 72 hours of real-time ultrasound examination were compared with the weight calculated from the ultrasonically measured biparietal diameter and abdominal circumference. A high degree of correlation (4 = .9624) was found between actual and calculated weights. This method of w...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1981-06-01 00:00:00
abstract::Fifty-two women undergoing labor induction and vaginal delivery at term were randomized between two oxytocin infusion protocols, involving hourly versus quarter-hourly increases in dose. Potential differences were sought of duration of labor, amount of uterine activity generated, and amount of oxytocin required. Start...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1990-05-01 00:00:00
abstract::Seizure disorders frequently are diagnosed and managed during adolescence; therefore, obstetrician-gynecologists who care for adolescents should be familiar with epilepsy and other seizure disorders, as well as antiepileptic drugs. Patients diagnosed with seizure disorders during childhood may have increased seizure a...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000003828
更新日期:2020-05-01 00:00:00
abstract:OBJECTIVE:To evaluate simultaneous human immunodeficiency virus (HIV)-related nucleic acids and human papillomavirus (HPV)-DNA in cervicovaginal secretions of HIV-seropositive women. METHODS:We collected 47 paired blood and cervicovaginal lavage samples from 124 known HIV-1-seropositive women. Proviral HIV-1 DNA, cell...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(01)01130-9
更新日期:2001-06-01 00:00:00
abstract::There are several obstetric, medical, and surgical disorders that share many of the clinical and laboratory findings of patients with severe preeclampsia-hemolysis, elevated liver enzymes, and low platelets syndrome. Imitators of severe preeclampsia-hemolysis, elevated liver enzymes, and low platelets syndrome are lif...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1097/01.AOG.0000258281.22296.de
更新日期:2007-04-01 00:00:00
abstract::The authors describe a 5-year experience with 27 patients who had confirmed intrauterine scars at hysteroscopy, all of whom underwent resection of the scar. Of the 27, 14 became pregnant at least once, and 13 did not conceive. Hysteroscopic and hysterographic evidence of intrauterine scar was in general more severe in...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1982-07-01 00:00:00
abstract:OBJECTIVE:To evaluate the use of clinical trials registries in published obstetrics and gynecologic systematic reviews and meta-analyses. METHODS:We performed a metaepidemiologic study of systematic reviews between January 1, 2007, and December 31, 2015, from six obstetric and gynecologic journals (Obstetrics & Gyneco...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000001204
更新日期:2016-02-01 00:00:00
abstract:OBJECTIVE:Previous studies that compared outcomes of infants born outside tertiary care centers (outborn) with those born in tertiary care centers (inborn) did not account for admission illness severity and perinatal risks. The objective of this study was to examine whether outborn status is associated with higher mort...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(01)01438-7
更新日期:2001-08-01 00:00:00
abstract:OBJECTIVE:To assess the neurologic and developmental outcome at 2 years of age in preterm infants with birth weights 600 g or lower. METHOD:We conducted a retrospective review from January 1994 through December 1998 for placental histopathology, maternal factors, neonatal intensive care unit course, growth, neurologic...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(02)02451-1
更新日期:2003-01-01 00:00:00
abstract:OBJECTIVE:To estimate receipt of recommended gynecologic care, including cancer screening and menstrual care, among women with Down syndrome in the United States. METHODS:We conducted a retrospective cohort study of women participating in DS-Connect, the National Institute of Health's registry of women with Down syndr...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000003997
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVE:To understand contemporary fourth-year medical student and resident career expectations in obstetrics and gynecology. METHODS:Students invited for obstetrics and gynecology residency interviews and residents (postgraduate years 1-4) at the University of Colorado, University of Washington, University of Calif...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000002817
更新日期:2018-10-01 00:00:00
abstract::Eighteen patients with mesonephroid ovarian carcinoma were investigated. Typical findings for the mesonephroid tumors were abundant extracellular an some intracellular neutral mucin mixed with sulfate and carboxyl groups, and large amounts of glycogen, especially in clear cells. The latter observation is considered to...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1979-04-01 00:00:00
abstract::A new fetal scalp electrode applicator system uses a guide tube with increased curvature and a plunger mechanism to advance, rotate, and release the spiral electrode. Results of a preliminary survey among house staff who used the system in 51 patients indicated a favorable impression, with 96.1% of the applications ra...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1991-03-01 00:00:00
abstract::A rare case of a paraganglioma (extraadrenal pheochromocytoma) that complicated both pregnancy and the puerperium is described. The patient presented a confusing clinical picture simulating pregnancy-induced hypertension, which, after delivery, masqueraded as intractable fever of unknown origin. Computed tomography pr...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1982-06-01 00:00:00
abstract:OBJECTIVE:To assess the cost-effectiveness of diagnostic laparoscopy, computed tomography (CT), and magnetic resonance imaging (MRI) after indeterminate ultrasonography in pregnant women with suspected appendicitis. METHODS:A decision-analytic model was developed to simulate appendicitis during pregnancy taking into c...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e3182a4a085
更新日期:2013-10-01 00:00:00
abstract::The outcome of delivery of infants weighing more than 4000 g born during two time periods 15 years apart was studied retrospectively. The increased use of cesarean section and other obstetric advances did not reduce the risk of fetal asphyxia and trauma associated with large fetal size. Maternal factors were identifie...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1983-06-01 00:00:00