Abstract：
:In an attempt to establish the normal ratio of pulmonary artery to aorta diameters at varying gestational ages, the pulmonary artery and aorta diameters of 316 normally grown fetuses between 14 and 39 weeks' gestational age were measured. The ratios for each fetus were derived, and regression analysis was used to evaluate the relationship between gestational age and each diameter. We conclude that the diameters of the pulmonary artery and aorta are closely related to fetal age but that the ratio is independent of age (mean, 1.09; SD, 0.17). The diameters of the pulmonary artery and aorta in 21 fetuses with proved congenital heart disease were then compared with those of this normal population. The pulmonary artery/aorta ratio was abnormal in 13 of 21 fetuses with congenital heart disease. Actual measurements of the great vessels can be difficult and may be misleading, but a quick comparison of relative size by inspection is feasible.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Comstock CH,Riggs T,Lee W,Kirk Jdoi
10.1016/0002-9378(91)90466-5subject
Has Abstractpub_date
1991-10-01 00:00:00pages
1038-44issue
4 Pt 1eissn
0002-9378issn
1097-6868pii
0002-9378(91)90466-5journal_volume
165pub_type
杂志文章abstract：:Immunoglobulins G, M, and A were found in varying concentrations in four different human fetal anatomic compartments of 17 fetuses in the absence of apparent infection. The highest levels were noted in the thoracic cavity. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(88)80146-7
更新日期：1988-10-01 00:00:00
abstract：OBJECTIVE:To characterize the serum metabolome of a primate model of in utero high-fat exposure. STUDY DESIGN:Serum from maternal and fetal (e130) macaque monkeys exposed to either a high-fat or control diet were analyzed by gas chromatography-mass spectrometry. Multivariate data analysis was performed to reduce the g...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2009.06.041
更新日期：2009-09-01 00:00:00
abstract：OBJECTIVE:This study was to evaluate the predictive value of the uterine cervix tissue with the use of quantitative ultrasound gray level analysis for preterm delivery. STUDY DESIGN:Sixty-eight patients with preterm labor between 20 and 35 weeks of gestation were included. When two-dimensional transvaginal ultrasound ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/s0002-9378(03)00488-5
更新日期：2003-08-01 00:00:00
abstract：:An improved statistical method for assessing the efficacy of intrauterine contraception is presented. This method, called the log-rank method, is based on a daily life table, which yields the best estimates of the cumulative net termination probabilities. It provides a sensitive chi-square test statistic to detect dif...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(77)90632-9
更新日期：1977-06-01 00:00:00
abstract：:Cesarean scar ectopic pregnancies may be difficult to diagnose and may result in uterine rupture or hysterectomy. Based on location and vascularity, especially in the presence of fetal cardiac activity, local treatment with transvaginal ultrasound-guided injection of methotrexate is an excellent option which also opti...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2012.03.009
更新日期：2012-09-01 00:00:00
abstract：:A light and electron microscopic study was undertaken of the early phases of cervical squamous metaplasia. A study of areas of columnar epithelium with one row of subcolumnar cells revealed a spectrum of squamous differentiation ranging from cytologically undifferentiation to more characteristically basal type squamou...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(15)33239-7
更新日期：1980-07-15 00:00:00
abstract：OBJECTIVE:This study was undertaken to compare surgical techniques for the primary repair of obstetric anal sphincter lacerations. STUDY DESIGN:Patients with complete third- or fourth-degree lacerations were recruited and randomly assigned to either an end-to-end or overlapping repair. Data collection included demogra...
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.2004.11.045
更新日期：2005-05-01 00:00:00
abstract：:Antenatal in utero surgery for congenital diaphragmatic hernia has been justified by reported perinatal mortality rates of 77% to 80%. Such rates may have been subject to bias of ascertainment and may include fetuses with additional severe malformations who would not be surgical candidates. We used the Iowa Birth Defe...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90425-q
更新日期：1991-10-01 00:00:00
abstract：:Eight patients with squamous cell carcinoma in situ of the vagina were treated with monthly 5 day courses of 20% 5-fluorouracil cream applied to the vagina. Seven (87.5%) of the women had an initial complete response; however, three subsequently developed recurrence after the treatment was stopped. They were retreated...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(79)90709-9
更新日期：1979-10-01 00:00:00
abstract：:Sixty patients with chronic pelvic pain were monitored after diagnostic laparoscopy had excluded obvious pelvic pathology. Six months after the procedure only two patients described their symptoms as unchanged or worse. Treatment should be limited to the minority of patients whose symptoms remain 6 months after laparo...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(92)91343-9
更新日期：1992-03-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to evaluate the risk for bacterial vaginosis (BV) in a douching cessation trial. STUDY DESIGN:Thirty-nine reproductive-age women who reported use of douche products were enrolled into a 20-week study consisting of a 4 week douching observation (phase I) followed by 12-weeks of ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2007.11.043
更新日期：2008-06-01 00:00:00
abstract：:Primary cancers of the vagina are rare. They comprise 1% to 2% of all gynecologic malignancies and occur predominantly in older women. The diagnosis of primary carcinoma of the vagina requires that the cervix and vulva be intact and that no clinical evidence of other primary tumors exist. Approximately 90% of all vagi...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/s0002-9378(12)90738-3
更新日期：1991-10-01 00:00:00
abstract：:The effect of surgically lengthening the rabbit oviduct was investigated. In the study group, a lengthened fallopian tube was created by division of the left fallopian tube at the ampullary-isthmic junction and the right fallopian tube at the uterotubal junction. The proximal left tube and the entire right tube were m...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90019-4
更新日期：1983-11-01 00:00:00
abstract：OBJECTIVE:This study was undertaken to determine whether the presence of a dilated internal os (funneling or beaking) alters the outcome of patients with a short cervix documented by transvaginal ultrasound in the second trimester. STUDY DESIGN:Between January 1998 and May 2004, all singleton pregnancies with a short ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2005.01.076
更新日期：2005-04-01 00:00:00
abstract：:The place of symphysiotomy in the management of cephalopelvic disproportion is discussed on the basis of the existing literature, reviewing maternal mortality and morbidity after symphysiotomy and the vaginal delivery rate in a subsequent pregnancy after a previous symphysiotomy. These are compared with the outcome of...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)90653-x
更新日期：1990-07-01 00:00:00
abstract：:Charts from 482 singleton pregnancies undergoing cerclage placement in patients over a 6-year period were reviewed. Cervical dilatation at time of surgery, number of previous spontaneous losses, and gestational age at placement were key determinants of outcome. The most frequent complication, premature rupture of the ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90283-w
更新日期：1991-09-01 00:00:00
abstract：:In recent years numerous articles have reported on the inaccuracies of the dilatation and curettage procedure, citing a false-negative rate of up to 10% to 15%. Indeed, several articles have reported that, in this era of simplified endoscopy, the blind dilatation and curettage should no longer play a significant role ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(88)90367-5
更新日期：1988-06-01 00:00:00
abstract：OBJECTIVE:This retrospective study was conducted to determine whether predischarge survival and morbidity of very-low-birth weight infants varied according to the principal pregnancy complication that led to preterm delivery. STUDY DESIGN:The hospital records of 535 consecutive live-born singleton infants who weighed ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(93)90288-t
更新日期：1993-11-01 00:00:00
abstract：:The effect of an intravenous bolus of 25 mg of conjugated estrogen (Premarin) on vaginal blood flow in seven surgically menopausal women was measured by a thermal conductance probe. Electrical power (0.8 W) was supplied to a resistance wire incorporated in the surface of the probe, and its surface temperature was moni...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(82)90075-8
更新日期：1982-06-15 00:00:00
abstract：OBJECTIVE:This study was undertaken to evaluate the effects on peripheric pulmonary vessel muscularization by tracheal occlusion (TO) performed at different gestational ages in fetal rabbits with surgically induced diaphragmatic hernia. STUDY DESIGN:In 23 New Zealand white does, both ovarian end fetuses underwent surg...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.01.006
更新日期：2004-09-01 00:00:00
abstract：:The maturation of the glomerular filtration rate (GFR) and the interrelationship between the GFR and the renal transport of sodium and chloride have been evaluated during the last trimester of gestation with the use of long-term experiments in fetal lambs. An increase in GFR (milliliters per minute) parallel to the in...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(77)90712-8
更新日期：1977-08-01 00:00:00
abstract：:A retrospective analysis was made of Rh-sensitized patients delivered of their babies at Duke University Medical Center during a 24 year period. Records of 202 obstetric patients representing 280 sensitized pregnancies from a pool of 39,910 deliveries were analyzed for past obstetric history, blood group information, ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(81)90083-1
更新日期：1981-08-15 00:00:00
abstract：:To identify causes and risk factors for pregnancy-related mortality in New York City, we analyzed 224 pregnancy-related deaths that occurred from 1980 to 1984. The leading causes of death were ectopic pregnancy complications, embolism, intrapartum cardiac arrest, and hypertension. Mortality ratios were determined by c...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)80031-1
更新日期：1991-02-01 00:00:00
abstract：:Rates of short-interval pregnancies that result in unintended pregnancies remain high in the United States and contribute to adverse reproductive health outcomes. Long-acting reversible contraception methods have annual failure rates of <1%, compared with 9% for oral contraceptive pills, and are an effective strategy ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2018.03.007
更新日期：2018-06-01 00:00:00
abstract：OBJECTIVES:The study was undertaken to compare Hispanic birth outcomes with those of white and African American women in North Carolina and to examine variables associated with adverse birth outcomes among Hispanic women. STUDY DESIGN:Retrospective comparison of birth outcomes by ethnicity/race, from linked birth/infa...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2003.348
更新日期：2003-05-01 00:00:00
abstract：BACKGROUND:Pudendal neuralgia is a painful neuropathic condition involving the pudendal nerve dermatome. Tarlov cysts have been reported in the literature as another potential cause of chronic lumbosacral and pelvic pain. Notably, they are often located in the distribution of the pudendal nerve origin at the S2, S3, an...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2019.07.021
更新日期：2020-01-01 00:00:00
abstract：:Five nonstress tests were interpreted by a national sample of obstetricians blinded to specific patient clinical data. The 169 questionnaires suitable for analysis showed that the reliability of the test interpretation, as measured by the kappa statistic, decreased with increasing number of categories of interpretatio...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(85)90459-4
更新日期：1985-11-01 00:00:00
abstract：OBJECTIVE:Patients with preeclampsia (PE) have endothelial dysfunction and an increased future risk of cardiovascular (CV) mortality. The number of circulating endothelial cells (CECs) is markedly increased in conditions associated with a high degree of endothelial cell activation/injury including PE. We hypothesized t...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2015.06.043
更新日期：2015-10-01 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：OBJECTIVE:The primary objective of this study was to identify specific educational goals for obstetrics and gynecology residents in the ambulatory setting. STUDY DESIGN:A cross-sectional study of current practice patterns in primary care, benign gynecology, and office procedures was performed with mailings to local pr...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.07.070
更新日期：2004-11-01 00:00:00
