Abstract:
:The most common anomalies of implantation of the placenta and umbilical cord include placenta previa, placenta accreta spectrum, and vasa previa, and are associated with considerable perinatal and maternal morbidity and mortality. There is moderate quality evidence that prenatal diagnosis of these conditions improves perinatal outcomes and the performance of ultrasound imaging in diagnosing them is considered excellent. The epidemiology of placenta previa is well known, and it is standard clinical practice to assess placental location at the routine screening second-trimester detailed fetal anatomy ultrasound examination. In contrast, the prevalence of placenta accreta spectrum and vasa previa in the general population is more difficult to evaluate because detailed confirmatory histopathologic data are not available in most studies. The sensitivity and specificity of ultrasonography for the diagnosis of these anomalies is also difficult to assess. Recent epidemiologic studies show an increase in the incidence of placental and umbilical cord implantation anomalies, which may be the result of increased use of assisted reproductive technology and cesarean delivery. There is good evidence to support targeted standardized protocols for women at high risk and that screening and diagnosing placenta accreta spectrum and vasa previa should be integrated into obstetric ultrasound training programs.
journal_name
Obstet Gynecoljournal_title
Obstetrics and gynecologyauthors
Jauniaux E,Silver RMdoi
10.1097/AOG.0000000000004175subject
Has Abstractpub_date
2020-12-01 00:00:00pages
1211-1216issue
6eissn
0029-7844issn
1873-233Xpii
00006250-202012000-00021journal_volume
136pub_type
杂志文章abstract::The hemodynamic effects of intravenously infused dihydralazine (incremental doses up to 125 micrograms per minute during 60 minutes) were studied in ten women with acute or superimposed severe preeclampsia. The intervillous and umbilical vein blood flow were measured before and during dihydralazine infusion with 133Xe...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1985-01-01 00:00:00
abstract::A new method to replace fetal membranes that have prolapsed through an incompetent cervix, which includes overfilling of the urinary bladder, was successful in four consecutive patients who presented with this clinical entity. ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1989-09-01 00:00:00
abstract::Unsustainable health care costs combined with suboptimal patient outcomes have led health policy experts and payers to consider value-based payment or alternative payment models. Replacing fee-for-service reimbursement, these models link payment to value by rewarding efforts to enhance the quality of care at similar o...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000002753
更新日期:2018-08-01 00:00:00
abstract::Despite earlier studies, there remain unanswered questions regarding urinary calculi in pregnancy. The authors studied 11 cases in 11,292 deliveries over 5 years. Eight previous studies were also studied and data were compiled from 96 cases in 138,296 patients. The incidence of urinary calculi in pregnancy is approxim...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1980-10-01 00:00:00
abstract::Well-documented amniotic fluid embolism with survival is an uncommon occurrence. A case is reported with characteristic clinical findings in addition to electrocardiographic evidence of acute right heart strain, disseminated intravascular coagulation, and amniotic fluid debris in central venous blood. The impact of th...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1976-03-01 00:00:00
abstract:OBJECTIVE:Despite a change of fetal physiologic and biochemical functions with gestational age, stationary umbilical cord acid-base reference values are used as measures of obstetric care quality. The aim of this study was to assess the risk of low Apgar score relative to low pH when using stationary versus gestational...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(03)00512-x
更新日期:2003-08-01 00:00:00
abstract:OBJECTIVE:To determine how long fetal nucleated cells can be detected in maternal peripheral blood after delivery in cases of fetomaternal hemorrhage, using fluorescence in situ hybridization or polymerase chain reaction. METHODS:Nucleated cells with Y chromosomes were analyzed in 90 blood samples using fluorescence i...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0029-7844(94)00414-9
更新日期:1995-03-01 00:00:00
abstract::The male sexual partners of 34 women with cervical condyloma or cervical intraepithelial neoplasia (CIN) were examined for penile condylomata and/or urinary tract lesions. External lesions were detected in 18 (53%) of the male consorts of women with cervical lesions including 14 of 22 whose consorts had cervical condy...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1984-07-01 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::Severe fetal hydrops was diagnosed at 34 weeks' gestation. Funipuncture revealed a normal 46,XX karyotype and a hematocrit of 20%. Cesarean delivery was performed. Neonatal blood testing showed blood type B positive, positive direct and indirect Coombs, and an anti-B antibody titer of 1:64. The maternal blood group wa...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1991-11-01 00:00:00
abstract::Delayed umbilical cord clamping appears to be beneficial for term and preterm infants. In term infants, delayed umbilical cord clamping increases hemoglobin levels at birth and improves iron stores in the first several months of life, which may have a favorable effect on developmental outcomes. There is a small increa...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,实务指引
doi:10.1097/AOG.0000000000001860
更新日期:2017-01-01 00:00:00
abstract::Phenylketonuria (PKU) is an autosomal recessive disorder of phenylalanine (Phe) metabolism characterized by a deficiency of the hepatic enzyme, phenylalanine hydroxylase, an enzyme responsible for the conversion of phenylalanine to tyrosine, and elevated levels of Phe and Phe metabolite. All women with PKU or hyperphe...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e3181c6f93d
更新日期:2009-12-01 00:00:00
abstract:OBJECTIVE:To estimate whether the timing of bladder emptying affects focal myometrial contraction development and image adequacy. METHODS:Women at 14 0/7-32 0/7 weeks of gestation undergoing a transvaginal ultrasound examination from January 1, 2012, to September 1, 2012, were eligible for this blinded randomized cont...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,随机对照试验
doi:10.1097/AOG.0b013e3182860b8d
更新日期:2013-04-01 00:00:00
abstract::To determine whether Lamaze childbirth preparation is harmless, harmful, or beneficial, 500 consecutive Lamaze-prepared patients were compared to 500 hand-picked controls, matched for age, race, parity, and educational level. Lamaze preparation was found to have a significant beneficial effect in almost every obstetri...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1978-06-01 00:00:00
abstract::Perforation of the uterus is a serious complication in users of intrauterine devices for contraception. The incidence varies with the type of device. The perforation can occur in different parts of the uterine wall. Perforation into the broad ligament is rare; only 4 cases have been described. Two additional cases, bo...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1975-08-01 00:00:00
abstract:OBJECTIVE:To compare the prevalence of abnormal anal cytology and high-risk human papillomavirus (HPV) among women with a history of HPV-related genital neoplasia with women without a history of HPV-related genital neoplasia. METHODS:A cross-sectional cohort study was performed from December 2012 to February 2014. Wom...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000001135
更新日期:2015-12-01 00:00:00
abstract::The aim of this study was to determine the types, patterns, and frequencies of congenital anomalies among newborns of both consanguineous and nonconsanguineous parents in southern Iran. From 9526 consecutive pregnancies observed, 9623 newborns resulted (9431 singleton and 95 sets of multiple gestation). There were 726...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1979-02-01 00:00:00
abstract:OBJECTIVES:To estimate the prevalence of urinary tract injury and the relative risk of litigation from an injury for benign gynecologic surgery in Canada and to analyze a subset of cases of litigation, determining independent risk factors that predicted medical and legal outcomes. METHODS:The prevalence of urinary tra...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000144127.78481.8c
更新日期:2005-01-01 00:00:00
abstract::A well-woman visit provides an excellent opportunity to counsel patients about maintaining a healthy lifestyle and minimizing health risks. Given the shifting and complex landscape of care, in which many women may not receive all the recommended preventive services, obstetrician-gynecologists have an opportunity to co...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000002898
更新日期:2018-10-01 00:00:00
abstract:BACKGROUND:Prune belly syndrome is a rare and complicated condition affecting the genitourinary organs and abdominal wall. The etiology of abdominal musculature deficiency in prune belly syndrome is controversial. We present a case that should elucidate the etiology of this syndrome. CASE:A spontaneously aborted fetus...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1994-05-01 00:00:00
abstract::Continuous tissue pH monitoring of the fetus was successfully conducted in 13 of 21 patients (61.9%) during labor. There was a significant correlation between the tissue pH and both the scalp capillary blood pH (r = 0.94, P less than 0.001) and the umbilical artery blood pH (r = 0.92, P less than 0.01). These findings...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1980-04-01 00:00:00
abstract:OBJECTIVE:To evaluate whether the combination of bacterial vaginosis and leukorrhea on microscopic evaluation of a saline wet preparation is associated with cervical infection with Chlamydia trachomatis (C. trachomatis) or Neisseria gonorrhea (N. gonorrhea). METHODS:A cross-sectional study of 598 patients was performe...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(01)01788-4
更新日期:2002-04-01 00:00:00
abstract::Oophorectomy is not always performed at the time of vaginal hysterectomy because of technical difficulties encountered in visualizing the ovaries and clamping and ligating the infundibulopelvic ligament. After uterine removal, a method that simplifies the approach involves separating the round ligament along the avasc...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0029-7844(95)00332-0
更新日期:1996-01-01 00:00:00
abstract::Epithelial ovarian cancer is the leading cause of death from gynecologic cancer in the United States. Although there has been a statistically significant improvement in 5-year survival, in 2005 more than 16,000 women were expected to die of this disease. To date, there is no reliable method to screen for ovarian cance...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1097/01.AOG.0000220516.34053.48
更新日期:2006-06-01 00:00:00
abstract:OBJECTIVE:To estimate whether progestin-induced endometrial shedding, before ovulation induction with clomiphene citrate, metformin, or a combination of both, affects ovulation, conception, and live birth rates in women with polycystic ovary syndrome (PCOS). METHODS:A secondary analysis of the data from 626 women with...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,随机对照试验
doi:10.1097/AOG.0b013e31824da35c
更新日期:2012-05-01 00:00:00
abstract:BACKGROUND:There are various causes of shortness of breath in a young, pregnant woman. The importance of entertaining a broad differential diagnosis is highlighted in this case. CASE:A young, pregnant African-American woman presented in her third trimester with acute onset of shortness of breath. A team approach by di...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000267318.56856.2a
更新日期:2007-06-01 00:00:00
abstract:BACKGROUND:Warfarin-induced skin necrosis is a rare and dangerous complication affecting 0.01-0.1% of patients on warfarin. Deficiencies in protein C or protein S in association with other factors have been implicated in its etiology. No report has described this disorder in the immediate postpartum period in patients ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(97)00393-1
更新日期:1997-10-01 00:00:00
abstract::Carrier screening, whether targeted or expanded, allows individuals to consider their range of reproductive options. Ultimately, the goal of genetic screening is to provide individuals with meaningful information that they can use to guide pregnancy planning based on their personal values. Ethnic-specific, panethnic, ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000001947
更新日期:2017-03-01 00:00:00
abstract::A simple, rapid, sensitive, and reliable ELISA test for the detection of urinary human chorionic gonadotropin (hCG) has been developed using penicillinase (EC no. 3.5.2.6) as the label and a microtiter ELISA plate as a solid support for antibody. The results of the test is assessed visually for the dark blue that indi...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1981-02-01 00:00:00
abstract:OBJECTIVE:Case reports of suspected adverse pregnancy outcomes associated with prenatal exposure to angiotensin-converting enzyme inhibitors, particularly oligohydramnios, prolonged neonatal anuria, and defects of ossification of the skull dome, prompted us to examine pregnancy outcome in a large cohort of pregnant wom...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1992-09-01 00:00:00