Abstract：
OBJECTIVE:Our purpose was to describe embryonal anatomic structures by use of intrauterine ultrasonography with a 20 MHz flexible catheter-based, high-resolution, real-time miniature transducer. STUDY DESIGN:Thirty-four women about to undergo therapeutic abortion from 7 to 9.9 weeks' gestation were studied with specially developed catheter-based, high-resolution, real-time miniature (2.4 mm outer diameter) ultrasonography transducer (20 MHz). A percentage of anatomic structures visualized at each gestational age is presented. RESULTS:The number and the clarity of structures increased from 7 to 8 weeks of gestation; however, the image quality was degraded because of the increasing fetal size at 9 weeks. At 8 weeks secondary brain vesicles, spine, midgut herniation, liver, upper and lower limb buds, and sacral tail were visualized in all fetuses. The four-chamber view was first identified at 8 weeks, as were fingers or toes. The stomach was first noted at 9 weeks. The umbilical cord cyst was visualized in 8% of embryos at 7 weeks' gestation and in 29% of embryos at 8 weeks. One cystic hygroma was diagnosed at 8 weeks 5 days. CONCLUSION:Intrauterine ultrasonography provides information on the visualization of anatomic structures of the embryo. In this limited series one embryonic malformation was demonstrated, and thus there is a potential for its use in the detection of malformations. These results suggest that intrauterine ultrasonography has the potential to be a supplement to transvaginal ultrasonography during the first trimester in high-risk pregnancies.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Fujiwaki R,Hata T,Hata K,Kitao Mdoi
10.1016/0002-9378(95)90425-5subject
Has Abstractpub_date
1995-12-01 00:00:00pages
1770-4issue
6eissn
0002-9378issn
1097-6868pii
0002-9378(95)90425-5journal_volume
173pub_type
杂志文章abstract：:Local cerebral glucose utilization was measured by the [14C]-deoxyglucose method in five near-term fetal sheep in whom bilateral ablation of the cochleae had been accomplished aseptically 5 to 8 days earlier. The tympanic membrane and ossicles were removed and all turns of each cochlea were unroofed with destruction c...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(87)80240-5
更新日期：1987-12-01 00:00:00
abstract：OBJECTIVE:We used a mouse model of infection-induced preterm delivery to examine the roles of 2 adaptor proteins with central functions in Toll-like receptor signaling: MyD88 (myeloid differentiation primary-response gene 88) and TRIF (Toll/IL-1 receptor (TIR)-domain-containing adaptor protein-inducing IFN-beta). STUD...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2008.08.038
更新日期：2009-01-01 00:00:00
abstract：:Pelvic inflammatory disease is a major medical problem that causes serious complications in a large number of the female population in many developing countries. It is estimated that between 20% and 30% of gynecologic admissions in these countries are due to PID. The alarmingly high prevalence of gonorrhea is probably...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(80)91114-x
更新日期：1980-12-01 00:00:00
abstract：:Ovaries from six women with normal menstrual cycles, a follicle wall biopsy specimen from a gonadotropin-stimulated preovulatory ovary, and a corpus luteum of pregnancy were examined by immunohistochemistry for the presence of immunoreactive renin and angiotensin II. Both antisera densely stained thecal and stromal ce...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90077-x
更新日期：1989-01-01 00:00:00
abstract：OBJECTIVE:The objective of this study was to determine whether introduction of laparoscopically assisted vaginal hysterectomy decreases the percentage of women requiring laparotomy for hysterectomy. STUDY DESIGN:A retrospective review of women undergoing hysterectomies from 1990 through 1992 was performed. Type of hys...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(94)70032-x
更新日期：1994-08-01 00:00:00
abstract：OBJECTIVE:Water absorption across the fetal chorioamniotic membranes is a critical regulatory pathway for amniotic fluid volume homeostasis. Aquaporins are cell membrane proteins that significantly enhance membrane permeability to water by acting as water channels. We recently demonstrated that aquaporin 8 is expressed...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2003.214
更新日期：2003-04-01 00:00:00
abstract：:The ability to predict clinical outcomes is of great importance to physicians and patients alike. Accordingly, multiple different methods have been used in an effort to accurately predict these outcomes. These methods include the development of scoring systems based on univariable and multivariable analysis, as well a...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2005.09.002
更新日期：2006-03-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to assess cerclage to prevent recurrent preterm birth in women with short cervix. STUDY DESIGN:Women with prior spontaneous preterm birth less than 34 weeks were screened for short cervix and randomly assigned to cerclage if cervical length was less than 25 mm. RESULTS:Of 1014...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,多中心研究,随机对照试验
doi：10.1016/j.ajog.2009.08.015
更新日期：2009-10-01 00:00:00
abstract：OBJECTIVES:The purpose of this study was to examine neurokinin B levels in serum from preeclamptic and normotensive and to investigate the role of neurokinin B in preeclampsia. STUDY DESIGN:Peripheral and uterine venous blood neurokinin B levels were measured in 14 normotensive and 8 preeclamptic pregnant women by rad...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/s0002-9378(03)00775-0
更新日期：2003-11-01 00:00:00
abstract：:The first reported case of recurrent acute fatty liver of pregnancy confirmed by biopsy is described. In this case a high index of suspicion led to an early diagnosis and intervention with resultant improved maternal and fetal outcome. Electron microscopic examination of a liver biopsy specimen proved more beneficial ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)91191-e
更新日期：1990-08-01 00:00:00
abstract：:Placental-related fetal growth restriction arises primarily due to deficient remodeling of the uterine spiral arteries supplying the placenta during early pregnancy. The resultant malperfusion induces cell stress within the placental tissues, leading to selective suppression of protein synthesis and reduced cell proli...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2017.11.577
更新日期：2018-02-01 00:00:00
abstract：OBJECTIVE:We sought to determine the impact of geographic location on advanced-stage ovarian cancer mortality in relation to adherence to National Comprehensive Cancer Network (NCCN) treatment guidelines and hospital case volume. STUDY DESIGN:This was a retrospective observational cohort study of patients diagnosed wi...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2015.01.045
更新日期：2015-07-01 00:00:00
abstract：:Uterine fibroid tumors (leiomyomas) are the most common benign pelvic tumors in women and are the major indication for hysterectomy. Fibroid tumors are more common and more severe among African American women. Although this disease disproportionately affects the African American population, we understand little about ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2013.08.008
更新日期：2014-03-01 00:00:00
abstract：OBJECTIVE:This study examines the role of fluorescence in situ hybridization on uncultured amniocytes for prenatal diagnosis in a population at high risk for aneuploidies. STUDY DESIGN:All patients undergoing amniocentesis for fetal structural abnormality on ultrasonographic examination (performed from 13 to 39 weeks)...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70600-8
更新日期：1997-04-01 00:00:00
abstract：:The possibility of controlling fertility by antibodies inactivating key reproductive hormones has been amply demonstrated by active and passive immunization in primates. Four birth control vaccines directed against human chorionic gonadotropin are currently in early clinical trials. The nature of these vaccines and th...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/s0002-9378(87)80135-7
更新日期：1987-10-01 00:00:00
abstract：:We retrospectively studied 48 pairs of twin gestations delivered between 24 and 28 weeks' gestation from 1975 to 1986 at Vanderbilt University Medical Center. The incidence of fetofetal transfusion syndrome was 20%, more than double the incidence previously reported in large series of twin deliveries that encompassed ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90644-3
更新日期：1989-11-01 00:00:00
abstract：:Ferning of amniotic fluid was studied in early pregnancy. Arborization was demonstrated during the interval of 6 1/2 to 16 weeks by flame-drying. Air-drying yielded a spectrum of crystallization from none prior to 8 weeks to full ferning by 16 weeks. Technical differences are stressed. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90617-4
更新日期：1986-03-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to evaluate factors affecting birth charges in twin pregnancies. STUDY DESIGN:Clinical and financial data were obtained on 1486 twin pregnancies delivered between 1995 to 2002 at medical centers in Maryland, Florida, Michigan, and South Carolina. Maternal and neonatal length of ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.05.057
更新日期：2005-03-01 00:00:00
abstract：:An investigation was undertaken in an effort to learn whether the type of delivery or the pattern of labor progression has any lasting effect on the infant. Paired-data design was chosen to ensure that the comparisons between homogeneous groups would be valid. Our objective was to reduce potential bias based on unequa...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(84)90386-7
更新日期：1984-12-15 00:00:00
abstract：OBJECTIVE:This study was undertaken to determine whether the neonatal benefit of a single complete course of antenatal corticosteroids diminishes when delivery is remote from administration (> 14 days). STUDY DESIGN:This retrospective 2 center cohort trial included women who received a single complete course of antena...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.ajog.2006.12.018
更新日期：2007-05-01 00:00:00
abstract：OBJECTIVE:We studied ovarian cancers for the expression of membrane markers of hematopoietic origin. STUDY DESIGN:We used flow cytometry to systematically characterize the expression of more than 30 hematologic antigens on ovarian carcinoma cell lines and to assess their stability under estrogen exposure. The expressi...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2009.05.013
更新日期：2009-08-01 00:00:00
abstract：:Retrospective review of 457 breech deliveries failed to reveal a significant improvement in neonatal mortality and morbidity rates for those delivered by cesarean section vs. vaginal delivery. A slight but insignificant improvement in salvage was found for the 1,000 to 1,500 gram weight category when delivery was by c...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(79)90638-0
更新日期：1979-07-15 00:00:00
abstract：:Despite current recommendations against its use, activity restriction remains a common intervention used to prevent preterm birth in multiple clinical settings. Hypertensive disorders of pregnancy, preterm premature rupture of membranes, multiple gestations, vaginal bleeding, short cervical length, placenta previa, an...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,实务指引
doi：10.1016/j.ajog.2020.04.031
更新日期：2020-08-01 00:00:00
abstract：:The effects of maternal hyperexcitability on the fetus were studied in 17 baboons. In the period of agitation, induced by stressful stimulus such as exposure to bright light or by clamping of the toe, the mother exhibited an increase in arterial blood pressure and, in some instances, arrhythmia. These changes were acc...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)33032-0
更新日期：1979-06-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to compare alpha-fetoprotein, human chorionic gonadotropin, and unconjugated estriol levels in women who take protease inhibitors and those women who do not. STUDY DESIGN:This retrospective review from August 2000 to May 2003 was performed for maternal serum screen results, medi...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.05.046
更新日期：2004-09-01 00:00:00
abstract：:Large ovarian cysts are conventionally treated by laparotomy. We describe a technique of transabdominal drainage under ultrasonographic control followed by laparoscopic excision of an ovarian cyst that was 24 x 10 x 20 cm. This approach has the benefits of minimal-access surgery and is suitable for unilocular benign c...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(96)70060-1
更新日期：1996-11-01 00:00:00
abstract：OBJECTIVE:A depressed skull fracture is an inward buckling of the calvarial bones and is referred to as a "ping-pong" fracture. This study aimed to look at differences between "spontaneous" and "instrument-associated" depressed skull fractures. STUDY DESIGN:This retrospective, case-control analysis included every neon...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.ajog.2004.06.035
更新日期：2005-01-01 00:00:00
abstract：:In 2011, 1 in 3 women who gave birth in the United States did so by cesarean delivery. Cesarean birth can be lifesaving for the fetus, the mother, or both in certain cases. However, the rapid increase in cesarean birth rates from 1996 through 2011 without clear evidence of concomitant decreases in maternal or neonatal...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2014.01.026
更新日期：2014-03-01 00:00:00
abstract：:We describe five patients with vaginal stenosis that was due to chronic graft-versus-host reaction after bone marrow transplantation. All patients underwent surgical procedures followed by local corticosteroids administration. Vaginal function was restored in all cases. This satisfactory result persists in the long te...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2003.262
更新日期：2003-04-01 00:00:00
abstract：:Umbilical cord abnormalities can be observed with ultrasonography. Two cases are described where a triple knot and torsion of the umbilical cord are observed. These cases allow the elucidation of the mechanics of formation of a triknot and torsion abnormality. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(93)90139-a
更新日期：1993-07-01 00:00:00
