Abstract：
:The pulsatility index of the fetal umbilical arteries was evaluated in 14 high-risk pregnant patients delivered by cesarean section between 30 and 35 weeks of gestation. Transabdominal cord sampling by ultrasonic guidance was performed on 10 of these patients. Umbilical arterial and venous blood was obtained in all patients from the doubly clamped cord at the time of cesarean section. The blood samples were analyzed for respiratory gases, acid-base balance, and lactate concentrations. A significant relationship was found between the pulsatility index and pH, PCO2, and lactate concentrations measured on umbilical venous blood sampled in utero. The pulsatility index also correlated with the same variables measured on venous and arterial blood sampled at cesarean section. Umbilical venous blood obtained transabdominally had a significantly higher oxygen content than blood obtained at cesarean section. No significant correlation was found between umbilical venous oxygen content obtained at transabdominal cord sampling and the pulsatility index. At a pulsatility index greater than 1.5, lactate concentrations in umbilical venous blood increased sharply. There would appear to be a curvilinear relationship between umbilical blood flow and these indices of fetal oxygenation, such that moderate increases in pulsatility index were not associated with a significant increase in fetal lactate concentrations.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Ferrazzi E,Pardi G,Bauscaglia M,Marconi AM,Gementi B,Bellotti M,Makowski EL,Battaglia FCdoi
10.1016/0002-9378(88)90418-8subject
Has Abstractpub_date
1988-11-01 00:00:00pages
1081-7issue
5eissn
0002-9378issn
1097-6868pii
0002-9378(88)90418-8journal_volume
159pub_type
杂志文章abstract：BACKGROUND:Vaginal agenesis in Mayer-Rokitansky-Küster-Hauser syndrome can be managed either by various surgeries or dilation. The choice still depends on surgeon's preferences rather than on quality comparative studies and validated protocols. OBJECTIVE:We sought to compare dilation and surgical management of vaginal...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,多中心研究
doi：10.1016/j.ajog.2018.07.015
更新日期：2018-09-01 00:00:00
abstract：:Behavioral states in the near-term human fetus have been described during pregnancy. The aim of this study was to observe whether these same states are present during labor. Nine patients with uncomplicated singleton pregnancies participated. Fetal heart rate and uterine contractions were recorded. Fetal eye, mouth, r...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(85)80071-5
更新日期：1985-08-01 00:00:00
abstract：:While observation of fetal breathing movements has been used in fetal assessment, quantitative parameters (percent time spent in breathing [incidence], breath rate, or breath rate variability) have not been adequately evaluated as predictive tools. We examined 283 patients with high-risk pregnancies between 32 and 42 ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(89)90112-9
更新日期：1989-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine the efficacy of combination intravaginal misoprostol and intracervical Foley catheter for prelabor cervical ripening. STUDY DESIGN:A prospective, randomized controlled trial was conducted. Women who were undergoing labor induction, with a singleton gestation >or=28 ...
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：10.1067/s0002-9378(03)00842-1
更新日期：2003-10-01 00:00:00
abstract：OBJECTIVE:The purposes of this study were to compare the clinical characteristics of extremely low birth-weight infants (501-1000 g birth weight) who die early (<12 hours of age) with those of infants who die >12 hours after birth and infants who survive to neonatal intensive care unit discharge and to develop a model ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.121652
更新日期：2002-04-01 00:00:00
abstract：OBJECTIVE:Our aim was to determine the effects of blocking prostaglandin synthesis, by infusion of indomethacin into the fetal circulation, on factors regulating amniotic fluid volume and on plasma composition in the mother and fetus. STUDY DESIGN:Indomethacin was administered to fetal sheep during 8 hours at 124.0 +/...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(94)70406-6
更新日期：1994-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to evaluate the accuracy of algorithms for the assignment of gestational age with the use of the last menstrual period and early ultrasound information. STUDY DESIGN:Gestational age estimates that are based on last menstrual period, ultrasound scanning, or their combination were...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.127601
更新日期：2002-12-01 00:00:00
abstract：OBJECTIVE:This study was undertaken to assess the value of minor ultrasonographic markers in predicting significant karyotypic abnormalities. STUDY DESIGN:A total of 2743 fetuses (14-24 weeks' gestation) prospectively underwent a detailed ultrasonographic survey before genetic amniocentesis. Criteria for 8 minor ultra...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(99)70322-4
更新日期：1999-10-01 00:00:00
abstract：:An analysis of the medical records of 103 women with Crohn's disease points up the following observations. There is a slight increase in spontaneous abortions and a substantial degree of subfertility. The obstetric experience is the same as in the normal obstetric population and the effects of the disease on pregnancy...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(78)90664-6
更新日期：1978-05-15 00:00:00
abstract：:A randomized, comparative study of two low-dose oral contraceptives was carried out in 60 nonpregnant women for 12 cycles. Twenty-eight women took a preparation containing 150 micrograms of desogestrel and 30 micrograms of ethinyl estradiol; 32 took 75 micrograms of gestodene and 30 micrograms of ethinyl estradiol. Ba...
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：10.1016/0002-9378(90)91357-i
更新日期：1990-10-01 00:00:00
abstract：:A case is reported of a woman who was exposed to human immunodeficiency virus through self-insemination. She was artificially inseminated with fresh semen obtained from a gay man in whom HIV seroconversion was taking place. Postexposure prophylaxis with antiretrovirals was initiated 10 days later, and despite successf...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(99)70529-6
更新日期：1999-09-01 00:00:00
abstract：OBJECTIVE:Thrombin is a potent uterotonic agent that may play an important role in human parturition. FGL2 is a prothrombinase that cleaves prothrombin to thrombin. The purpose of this study was to determine FGL2 messenger RNA expression in human myometrium and to assess its relationship to the expression of EP3-6 pros...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2003.248
更新日期：2003-04-01 00:00:00
abstract：OBJECTIVE:This study was undertaken to determine whether adrenomedullin, a hypotensive peptide, decreases vasomotor tone in fetoplacental vasculature that has been constricted with the thromboxane sympathomimetic U46619. STUDY DESIGN:The fetoplacental vascular beds of 20 perfused human placental cotyledons were vasoco...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2000.108071
更新日期：2000-12-01 00:00:00
abstract：:Oral contraceptives (OCs) raise the plasma levels of some clotting factors, especially factor VII. Until recently, however, there has been no evidence for a relationship between high levels of clotting factor and the onset of clinically manifest vascular disease. It has not been established, on a preliminary basis, th...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)32484-x
更新日期：1982-03-15 00:00:00
abstract：:Abnormal uterine bleeding is often the presenting complaint in women with underlying coagulopathies. A clear understanding of the pathophysiology of common bleeding disorders will help the practicing obstetrician/gynecologist in the diagnosis and treatment of these conditions. The normal hemostatic process can be divi...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/s0002-9378(96)80083-4
更新日期：1996-09-01 00:00:00
abstract：OBJECTIVE:We evaluate the interrater reliability of levator hiatus (LH) size and correlate size to other measures of muscle function. STUDY DESIGN:Participants were examined independently by 2 examiners. During maximal contraction of the levator ani, the muscle was assessed by using Brink's scale. The LH was measured ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2006.08.028
更新日期：2007-02-01 00:00:00
abstract：OBJECTIVE:Recently the Accreditation Council for Graduate Medical Education placed restrictions on all residency programs that limited work hours to 80 hours per week. The objective of this study was to determine the work hours for practicing obstetrician-gynecologists in an urban center. STUDY DESIGN:A questionnaire ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/s0002-9378(03)00888-3
更新日期：2003-09-01 00:00:00
abstract：:A case of nonimmune hydrops fetalis in association with angioosteohypertrophy (Klippel-Trenaunay) syndrome is reported for the first time. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(88)90443-7
更新日期：1988-11-01 00:00:00
abstract：BACKGROUND:Use of more effective contraception may lead to less condom use and increased incidence of sexually transmitted infection. OBJECTIVE:The objective of this study was to compare changes in condom use and incidence of sexually transmitted infection acquisition among new initiators of long-acting reversible con...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2017.09.009
更新日期：2017-12-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to evaluate the effect of N-acetylcysteine on the activity and secretion of the matrix metalloproteinases in the decidua, amnion, and chorion and the secretion of the tissue inhibitor of matrix metalloproteinase-1. STUDY DESIGN:Samples from eight nonlaboring women were taken at ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(03)00847-0
更新日期：2003-12-01 00:00:00
abstract：OBJECTIVE:The purpose of the present systematic review is to evaluate the available medical treatments for vulvar lichen sclerosus, using an arm-based network meta-analysis protocol. DATA SOURCES:We searched Medline (1966-2019), Scopus (2004-2019), Cochrane Central Register of Controlled Trials CENTRAL (1999-2019), Cl...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2019.10.095
更新日期：2020-06-01 00:00:00
abstract：OBJECTIVE:Fetal alcohol syndrome (FAS) is associated with intellectual disability and neurodevelopmental abnormalities. Neuroprotective peptides NAPVSIPQ (NAP) and SALLRSIPA (SAL) can prevent some of the alcohol-induced teratogenesis including fetal death, growth abnormalities, and learning impairment in part by preven...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2012.10.005
更新日期：2012-12-01 00:00:00
abstract：:Pulmonary beta-adrenergic receptors, which mediate the actions of endogenous catecholamines, increase before birth, an important step in pulmonary maturation. This increase, which occurs primarily in the alveoli, may be hastened by corticosteroids. However, because the lung is composed of more than 40 cell types, we a...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)90863-3
更新日期：1990-01-01 00:00:00
abstract：OBJECTIVE:Our purpose was to determine whether obese women and underweight women have an increased risk of birth defects in their offspring. STUDY DESIGN:A geographically based case-control study of women living in California and Illinois was performed. There were 499 mothers of offspring with neural tube defects, 337...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(94)70224-1
更新日期：1994-02-01 00:00:00
abstract：OBJECTIVE:The pathogenesis of the HELLP (hemolysis, enzyme liver, low platelets) syndrome is unknown. Recently soluble endoglin (sEng) was identified as a cause of the appearance of schistocytes and liver pathology in an animal model of preeclampsia (PE). STUDY DESIGN:We explored the value of sEng in 82 women who deli...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2010.03.006
更新日期：2010-06-01 00:00:00
abstract：:Partial colpocleisis, in comparison with complete colpocleisis, offers several advantages. The most obvious advantage is the avoidance of recurrent prolapse in sexually nonactive, older patients. Historically, colpocleisis has been reported to produce stress incontinence, which may be avoided by partial colpocleisis. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90699-x
更新日期：1986-06-01 00:00:00
abstract：:One of the factors determining the prognosis of choriocarcinoma is the stromal reaction of the host. We have been interested in the histologic findings of this reaction, and we studied the relationship between the CPV classification, which had been used in our department, and our clinical stage. There was no relation ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(81)90740-7
更新日期：1981-08-01 00:00:00
abstract：:A new low-frequency Doppler shift signal associated with fetal breathing has been observed. This signal is out of phase with the previously described signal from the inferior vena cava and originates from the umbilical vein. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(80)90567-0
更新日期：1980-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to describe trends and outcomes of planned births. STUDY DESIGN:Data from linked birth and hospital records for 779,521 singleton births at ≥33 weeks' gestation from 2001-2009 were used to determine trends in planned births (prelabor cesarean section and labor inductions). Adver...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2012.06.082
更新日期：2012-09-01 00:00:00
abstract：:Two hundred seventy-eight high-risk patients were managed by a comprehensive assessment of the anatomic, biochemical, and functional environment of the fetoplacental unit utilizing predetermined guidelines. Decisions to terminate pregnancy were reserved for patients who demonstrated a positive OCT. Perinatal outcome i...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(79)90835-4
更新日期：1979-07-01 00:00:00
