Abstract：
:Previous investigations have shown that the human placenta is a complex organ with different zones, each with a unique morphology. These zonal morphologic difference have been related to a probable blood PO2 gradient operating in the intervillous space. This study describes zonal variations in the vertical plane of the placenta by the application of different morphometric parameters. It demonstrates morphologic changes, which suggest that zonal differences may be the result of a physiologic adaptation of the placenta, which is dependent upon its structural relationships with the maternal tissues. This adaptation found in various areas of the placenta increases its functional efficiency.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Teasdale Fdoi
10.1016/0002-9378(78)90007-8subject
Has Abstractpub_date
1978-04-01 00:00:00pages
773-81issue
7eissn
0002-9378issn
1097-6868pii
0002-9378(78)90007-8journal_volume
130pub_type
杂志文章abstract：:Metformin is everywhere. Originally introduced in clinical practice as an antidiabetic agent, its role as a therapeutic agent is expanding to include treatment of prediabetes mellitus, gestational diabetes mellitus, and polycystic ovarian disease; more recently, experimental studies and observations in randomized clin...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2017.06.003
更新日期：2017-09-01 00:00:00
abstract：:The article below summarizes a roundtable discussion of a study published in this issue of the Journal in light of its methodology, relevance to practice, and implications for future research. Article discussed: Marc I, Rainville P, Masse B, et al. Hypnotic analgesia intervention during first-trimester pregnancy termi...
journal_title：American journal of obstetrics and gynecology
pub_type： 评论,杂志文章
doi：10.1016/j.ajog.2008.09.013
更新日期：2008-11-01 00:00:00
abstract：OBJECTIVE:The purpose of this project was to study an in vitro model for plugging membrane defects with gelatin sponge and to develop a method with which to use this material to treat premature rupture of the membranes. STUDY DESIGN:Fetal membranes were fixed over the opening of a flask that was filled with saline sol...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.117684
更新日期：2001-11-01 00:00:00
abstract：OBJECTIVE:The recommendation to perform a perimortem cesarean delivery within 4 minutes of maternal cardiac arrest was introduced in 1986. This recommendation was based on the assumptions that cardiopulmonary resuscitation is ineffective in the third trimester because of aortocaval compression, and that fetal and perha...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2005.02.038
更新日期：2005-06-01 00:00:00
abstract：:Obstetric uterine rupture has previously been reported after the laparoscopic removal of deep intramural myomas, but never has it been reported to follow the removal of superficial myomas. A 39-year-old primigravid woman with a history of a superficial subserous laparoscopic myomectomy was seen for acute abdominal sym...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70110-8
更新日期：1997-12-01 00:00:00
abstract：OBJECTIVES:This study was undertaken to determine whether tissue-specific defensins are expressed within female reproductive tissues. STUDY DESIGN:Messenger ribonucleic acid from amnion, chorion, endometrium, endocervix, myometrium, placenta, small intestine, peripheral blood lymphocytes, and cervical, endometrial, an...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70517-9
更新日期：1997-02-01 00:00:00
abstract：:Much has been written about the need for help for the overworked obstetrician. Two obstetricians delivering over 500 babies annuallay had insufficient time for their gynecology practice. Two nurse-midwives were employed and in the first year they delivered 61 per cent of those patients who delivered vaginally. All nor...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90940-0
更新日期：1975-09-01 00:00:00
abstract：:Twelve normal parturients were studied with a continuous wave Doppler unit to assess changes in uterine and umbilical velocity waveforms during labor. The analysis of these waveforms included the peak systolic/end-diastolic ratio and the evaluation of a diastolic notch. Each woman served as her own control, and all fe...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(87)80342-3
更新日期：1987-07-01 00:00:00
abstract：OBJECTIVE:We compared localization of human immunodeficiency virus type 1 within human placentas infected in utero with localization within human placental explants infected in vitro. STUDY DESIGN:Placental tissues from 3 cases of vertical transmission of human immunodeficiency virus type 1 were studied. Human placent...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(00)70514-x
更新日期：2000-01-01 00:00:00
abstract：BACKGROUND:In routine antenatal care, blood pressure is used as a screening tool for preeclampsia and its associated adverse outcomes. As such women with a blood pressure greater than 140/90 mm Hg undergo further investigation and closer follow-up, whereas those with lower blood pressures receive no additional care. In...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2019.12.272
更新日期：2020-06-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to identify prognostic and environmental factors associated with vulvar carcinoma in young women. STUDY DESIGN:This study was a review of patients younger than 45 years who were diagnosed with vulvar squamous cell carcinoma between 1994 and 2006. RESULTS:Fifty-six patients wer...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2009.01.014
更新日期：2009-06-01 00:00:00
abstract：BACKGROUND:Umbilical cord arterial blood gas values are used to diagnose fetal acidemia; however, arterial cord blood specimens are frequently not available. OBJECTIVE:We sought to assess whether umbilical cord venous blood gas values can be used to reliably predict fetal acidemia. STUDY DESIGN:This is an observation...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2017.05.047
更新日期：2017-09-01 00:00:00
abstract：:Thirteen healthy postmenopausal volunteers were studied under basal conditions and at intervals (days 1, 5, 10, and 30) after intravaginal placement of a polysiloxane ring impregnated with 400 mg of estradiol. Mean serum estradiol concentrations rose 26-fold with a twofold increase in serum estrone concentrations. Ser...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90821-5
更新日期：1986-08-01 00:00:00
abstract：:One hundred eighty-six patients with epithelial tumors of the ovary who were managed at the M. D. Anderson Hospital and Tumor Institute underwent an exploratory operation ("second-look" operation) to assess the status of the cancer. Fifty-eight patients were found to have no evidence of disease (NED) and chemotherapy ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)32778-8
更新日期：1980-12-15 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine the risk of cumulative cervical intraepithelial neoplasia (CIN) grade 2 or 3 according to initial colposcopy and directed biopsy results among women with low-grade squamous intraepithelial lesions (LSIL) or human papillomavirus (HPV) DNA positive atypical squamous ce...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2003.461
更新日期：2003-06-01 00:00:00
abstract：:Four cases of immature teratoma of the ovary are presented and the recent literature is reviewed. The majority of these tumors were confined to one ovary at the time of diagnosis, and more than 75% occurred in women under 25 years of age. The two most important prognostic parameters were stage of disease and histologi...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(83)90813-x
更新日期：1983-06-15 00:00:00
abstract：:Cellular transplantation is an attractive alternative to whole-organ transplantation when only a discrete function of the organ is deficient. Early fetal donor cells have an advantage because they engraft readily and do not cause graft-versus-host disease. Similarly, the fetus is an ideal recipient of allogeneic fetal...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(91)90656-c
更新日期：1991-01-01 00:00:00
abstract：:Most pharmacokinetic studies of antibodies in pregnancy have been carried out at the time of abortion or delivery. Whether such data represent pregnancy as such is not known. The present study compares the pharmacokinetic properties of cefuroxime in seven women during pregnancy, at delivery, and after delivery. After ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)32526-1
更新日期：1982-04-01 00:00:00
abstract：:It has recently been suggested that platelet-activating factor is involved in a number of processes associated with reproductive biology. We have demonstrated a critical role for this autacoid in the initiation and maintenance of parturition both in animals and man. In the present investigation, it has been demonstrat...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)90610-3
更新日期：1992-04-01 00:00:00
abstract：:Chlamydia trachomatis is becoming increasingly known for its ability to cause severe injury to the female genital tract. Little investigation has been done in its role in diseases of Bartholin's glands. We present what we believe to be the first case report of an abscess of a Bartholin's gland in which Chlamydia trach...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1988-03-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to estimate the prevalence and impact upon quality of life of anal incontinence (AI) in women aged 18 to 65. STUDY DESIGN:Consecutive women presenting for general gynecologic care were given a bowel function questionnaire. Women with AI were prompted to complete the Fecal Incont...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.ajog.2004.11.030
更新日期：2005-05-01 00:00:00
abstract：:Fetal movements, fetal heart rate patterns, and serum estriol levels were prospectively monitored in 91 high-risk and normal pregnant women. In four women, there was cessation of fetal movements. In three of these cases, there were pathologic changes in fetal heart rate patterns, with one neonatal death. Of the 87 wom...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(81)90672-4
更新日期：1981-09-01 00:00:00
abstract：OBJECTIVE:The study was designed to evaluate whether double positive maternal serum screening results for Down syndrome and open neural tube defects indicate an increased risk of adverse perinatal outcome. STUDY DESIGN:A retrospective case-control study was conducted. In a cohort of 170,394 women who underwent materna...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.125240
更新日期：2002-09-01 00:00:00
abstract：:A retrospective study of 56 patients treated for carcinoma in situ of the vulva over a 24-year period has shown a relative increase in the occurrence of this neoplasm. Only 6.7% of patients in the first 14 years of the study period were less than 35 years of age, as compared with 29.3% in the last decade. In the earli...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(84)90669-0
更新日期：1984-11-15 00:00:00
abstract：OBJECTIVE:To determine the prevalence of placental complications in patients conceived through donor versus autologous oocytes. STUDY DESIGN:A retrospective cohort study including 2 groups of patients who conceived through in vitro fertilization using: (1) donor oocyte (n = 139) and (2) autologous oocyte (n = 126). On...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2014.03.044
更新日期：2014-10-01 00:00:00
abstract：:In a series of 198 exenterative operations performed at the Mayo Clinic for various pelvic malignant lesions, a 5 year survival rate of 33 per cent was obtained. This rate is commendable, since almost 80 per cent of the operations were accomplished for recurrent malignancy. The diminished over-all operative mortality ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90908-4
更新日期：1975-04-01 00:00:00
abstract：OBJECTIVE:Our purpose was to define the diagnostic value of a new fetal assessment score that is based on each of the components of the Apgar score. STUDY DESIGN:A fetal assessment score was established to study the main fetal vital functions: (1) cardiovascular (heart rate, color of the skin in the Apgar score), now ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(93)90618-s
更新日期：1993-09-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to evaluate the potential of 3-dimensional (3D) power Doppler imaging to predict neonatal outcome and pulmonary arterial hypertension (PAH) in congenital diaphragmatic hernia (CDH). STUDY DESIGN:In this prospective observational study, 3D-power Doppler ultrasonography was perfor...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2006.05.010
更新日期：2006-12-01 00:00:00
abstract：:CO2 hysteroscopy for diagnosis of cervical polyps was performed in 36 patients. The polyps could be located under direct vision and their attachments were found to be deeper than what is seen in regular inspection. A relatively high number of endometrial polyps were found. It is advised that the polyps be surgically r...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(78)90324-1
更新日期：1978-03-15 00:00:00
abstract：:There are two major approaches to the prophylaxis for adhesions: chemical methods (e.g., dextran) and barrier methods. Theoretically, dextran prevents the formation of adhesions by a surface-coating or hydroflotation effect, whereas the barrier methods either prevent the formation of or mask adhesions by covering and ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(82)90018-7
更新日期：1982-08-01 00:00:00
