Abstract：
:Brachial artery Doppler flow velocity waveforms were recorded from 10 nonpregnant women and 19 women with uncomplicated pregnancies. The pregnant group showed higher peak systolic frequencies (3.24 compared with 2.26, p = 0.01), higher maximum end-diastolic frequencies (0.62 compared with 0.25, p = 0.01), and lower pulsatility indices (2.57 compared with 3.95, p = 0.06) when compared with the nonpregnant group. These Doppler changes could reflect the increase in maternal cardiac output and decline in systemic vascular resistance that occur in normal pregnancy. The effect on brachial artery Doppler of acutely increasing downstream impedance by hand immersion in ice-cold water was studied in nine women with uncomplicated pregnancies at 32 to 38 weeks' gestation. Immersion for 15 seconds was associated with a significant reduction in peak systolic frequencies (from 3.06 to 1.97, p less than or equal to 0.005) and maximum end-diastolic frequencies (from 0.82 to 0.03, p less than or equal to 0.005) and a significant increase in the pulsatility index (from 1.87 to 5.62, p less than or equal to 0.005). These changes persisted for the duration of immersion (60 seconds). After immersion, the brachial artery flow velocity waveform returned to its preimmersion pattern by 60 seconds. We conclude that in normal pregnancy, the maternal brachial artery Doppler flow velocity waveform reflects acute and chronic changes in downstream impedance.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Fairlie FM,Walker JJdoi
10.1016/0002-9378(91)90026-nsubject
Has Abstractpub_date
1991-12-01 00:00:00pages
1741-4issue
6 Pt 1eissn
0002-9378issn
1097-6868pii
0002-9378(91)90026-Njournal_volume
165pub_type
杂志文章abstract：:The use of reconstructive surgical techniques accelerates recovery from radical pelvic surgery. It also allows the surgeon greater latitude in the type of procedure and the selection of patients for extended pelvic surgery. The techniques involved in three such reconstructive procedures are described, and their applic...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(77)90783-9
更新日期：1977-10-01 00:00:00
abstract：:Forty-three pregnancies that were complicated by pregnancy-induced hypertension and either absence of umbilical artery end-diastolic frequencies (n = 32) or reversal of umbilical artery end-diastolic frequencies (n = 11) were reviewed. The incidence of perinatal mortality and morbidity was similar for the two Doppler ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(91)90590-n
更新日期：1991-04-01 00:00:00
abstract：:Maternal urinary 6 beta-hydroxycortisol (6 beta-OHF) and creatinine levels were measured in 28 patients with singleton pregnancies admitted in apparent premature labor and in 17 women with singleton pregnancies delivered at term. Urine specimens were collected immediately after admission but prior to the initiation of...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(81)90003-x
更新日期：1981-02-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine stillbirth risk factors and gestational age at delivery in a prospective developing country birth cohort. STUDY DESIGN:At 20-26 weeks of gestation, 1369 Pakistani women were prospectively enrolled in the study; the gestational age was determined by ultrasound evalua...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/j.ajog.2007.07.012
更新日期：2007-09-01 00:00:00
abstract：:A comparison was made of the incidences of cesarean section deliveries between mothers 18 years of age or younger and those 19 to 21 years of age, all of whom were enrolled in a comprehensive program of prenatal care. Also compared were the indications for surgical delivery between the two groups. The rate of cesarean...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(85)80033-8
更新日期：1985-07-15 00:00:00
abstract：OBJECTIVE:Our aim was to examine the relationship between the levels of cytokines in peritoneal fluid and its embryo toxicity. STUDY DESIGN:The levels of interleukin-1 and tumor necrosis factor were measured in peritoneal fluid from infertile women who did not have endometriosis (n = 21), who had untreated endometrios...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(11)91672-x
更新日期：1992-07-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to assess the risk of neonatal death and morbidity in vertex-nonvertex second twins according to the mode of delivery and birth weight. STUDY DESIGN:Data from a retrospective cohort study that was based on all twin births in the United States (1995-1997) were used. RESULTS:A to...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2004.09.132
更新日期：2005-03-01 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:In 2005, 4 Clostridium sordellii-associated toxic shock fatalities were reported in young Californian women after medical abortions. The true incidence of this rare disease is unknown, and a population-based study has never been performed. Additional clostridia-associated deaths were sought to describe associ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2009.05.023
更新日期：2009-11-01 00:00:00
abstract：:Although the importance of sonography in modern obstetrics is undisputed, its role in the evaluation of the patient with gynecologic disease is less clear. We evaluated the role of pelvic sonography in the initial assessment of gynecologic patients. Standardized pelvic sonography was performed on patients scheduled to...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(84)90241-2
更新日期：1984-07-15 00:00:00
abstract：OBJECTIVE:The objective of the study was to examine the rates of gestational diabetes mellitus (GDM) associated with both maternal and paternal race/ethnicity. STUDY DESIGN:This was a retrospective cohort study of all women delivered within a managed care network. Rates of GDM were calculated for maternal, paternal, a...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2010.01.082
更新日期：2010-06-01 00:00:00
abstract：:Intervillous placental blood flow and indices of fetal heart rate variability were measured from seven healthy pregnant women in the last trimester of pregnancy, once before and twice after smoking one cigarette. A blood flow reduction was observed in seven, a rise in five, and no change in two measurements. When inte...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90975-4
更新日期：1983-08-15 00:00:00
abstract：:Domiciliary fetal monitoring via a telephone link has been in clinical use at the Royal Free Hospital for 2 years, during which time 858 traces of 134 patients who were moderately at risk have been transmitted to the hospital. All recognized abnormal heart rate patterns were detected during the study period. In seven ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)90411-y
更新日期：1990-02-01 00:00:00
abstract：BACKGROUND:After initiating a new contraceptive method, the provider has little control of how or whether that method is used. OBJECTIVE:We sought to compare unintended pregnancy rates by the initial chosen contraceptive method after counseling to traditional contraceptive effectiveness in the same study population. ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2016.01.162
更新日期：2016-07-01 00:00:00
abstract：OBJECTIVES:The purpose of our study was to investigate the combined interactive effects of maternal age, parity, and smoking on pregnancy outcome. STUDY DESIGN:This was a population-based Swedish study (n = 538,829). RESULTS:Multiple logistic regression analysis showed that the smoking-related effect on the relative ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(12)90878-9
更新日期：1993-01-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to investigate the use of vaginal progesterone for the prevention of preterm delivery in twin pregnancies. STUDY DESIGN:We conducted a prospective, randomized, double-blind, placebo-controlled trial that involved 390 naturally conceived twin pregnancies among mothers with no his...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajog.2015.02.021
更新日期：2015-07-01 00:00:00
abstract：:A chart for displaying neonatal survival data regarding low birth weight and early gestational age is presented. Survival data at two institutions for infants with low birth weight and early gestational age are compared. This format is useful for student and resident teaching, for counseling parents-to-be about potent...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(84)90026-7
更新日期：1984-07-01 00:00:00
abstract：:Rhesus monkeys weighing 6-8 kg and demonstrating regular menstrual cycles were used to delineate the relationships between the circadian patterns in spontaneous uterine activity, the urinary excretion of 2 catecholamines, norepinephrine and epinephrine, and the alterations in adrenergic neuroreceptors. In Experiment...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(77)90819-5
更新日期：1977-09-01 00:00:00
abstract：OBJECTIVE:This study was undertaken to compare the frequencies with which physicians and patients report medical and behavioral risk factors during pregnancy, with particular attention to identification of women at risk for prenatal alcohol use. STUDY DESIGN:The sample included 278 women, drawn from a randomized trial...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2005.04.053
更新日期：2005-12-01 00:00:00
abstract：OBJECTIVE:Retinoic acid plays an essential role in epithelial differentiation, and retinoid homeostasis is disrupted in cancers of epithelial origin. The goal of this study was to determine whether hRoDH-4, an enzyme that can catalyze the first and rate-limiting step in retinoic acid biosynthesis, is expressed in norma...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2002.122127
更新日期：2002-04-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to test whether ultrasound-measured fetal adrenal gland volume (AGV) and fetal zone enlargement (FZE) predicts preterm birth (PTB) better than cervical length (CL). STUDY DESIGN:Three-dimensional and 2-dimensional ultrasound were used prospectively to measure fetal AGV, FZE, an...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2010.11.034
更新日期：2011-04-01 00:00:00
abstract：:This review concentrates on 2 consequences of cesarean deliveries that may occur in a subsequent pregnancy. They are the pathologically adherent placenta and the cesarean scar pregnancy. We explored their clinical and diagnostic as well as therapeutic similarities. We reviewed the literature concerning the occurrence ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2012.03.007
更新日期：2012-07-01 00:00:00
abstract：:As the American physician workforce matures in age, senior physicians on the active clinical staff may become vulnerable to diminished professional performance. Many physicians compensate by using experiential rather than analytic methods to effectively solve clinical problems. Surgical expertise also may be at risk i...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2011.07.043
更新日期：2012-03-01 00:00:00
abstract：BACKGROUND:Mortality associated with cervical cancer is a public health concern for women, particularly in HIV-seropositive women in resource-limited countries. HIV-seropositive women are at a higher risk of high-grade cervical precancer, which can eventually progress to invasive carcinoma as compared to HIV-seronegati...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajog.2017.03.022
更新日期：2017-08-01 00:00:00
abstract：:Gynecologic cancer records of 4,238 patients treated between 1956 and 1974 were reviewed. Sixteen patients developed noeplasia in the cervix or vagina 10 or more years following pelvic irradiation. Three patients had squamous carcinoma in situ; the other 13 patients had invasive squamous cancer involving the upper vag...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(77)90445-8
更新日期：1977-03-01 00:00:00
abstract：OBJECTIVE:The aim of this study was to assess the effectiveness of psychologic support against preterm delivery in pregnant women with symptoms of preterm labor. STUDY DESIGN:The study, which involved two cohorts of women identified during two successive periods in the same maternity ward, included 309 women in the ex...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70299-0
更新日期：1997-10-01 00:00:00
abstract：:Nineteen cases of spontaneous second-trimester abortion associated with the intrauterine device (IUD) are reviewed and compared to 30 cases of spontaneous second-trimester abortion not associated with the IUD. Fifteen of the IUD's were Dalkon shields and four were Lippes loops. 16 of the 19 IUD-associated abortions be...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(76)90099-5
更新日期：1976-02-15 00:00:00
abstract：:To determine whether epidural anesthesia during labor affects maternal circulating catecholamines, blood samples were obtained from 15 patients at the peak of and immediately after two consecutive painful contractions. A lumbar epidural local anesthetic without epinephrine was then administered. After the onset of ana...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(83)90076-5
更新日期：1983-09-01 00:00:00
abstract：:Performing a platelet count in fetal scalp blood was hitherto the only method to predict whether the infant of a mother with idiopathic thrombocytopenic purpura will be thrombocytopenic. Fifteen such cases are reported. Falsely low platelet counts were found in almost half of these fetal scalp samples. In two patients...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(87)80074-1
更新日期：1987-10-01 00:00:00
abstract：BACKGROUND:Data regarding pregnancy outcomes in sickle cell disease are conflicting. Previous studies are limited by small sample size, narrow geographic area, and a wide range of resource availability. OBJECTIVE:The purpose of this study was to examine the association between maternal sickle cell disease and adverse ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2016.05.032
更新日期：2016-10-01 00:00:00
