Abstract:
:One of the compensatory hemodynamic mechanisms seen in the anemic human fetus is an increased cardiac output. With Doppler techniques, cardiac output was measured in 21 fetuses before and immediately after 38 intrauterine transfusions for severe red cell alloimmunization. Umbilical venous pressures were measured before and after transfusion; amniotic fluid pressure was also quantitated. After subtraction of amniotic pressure, umbilical venous pressure increased by 1.7 +/- 2.8 mm Hg (p less than 0.01). Left and right ventricular output declined by 19% and 22%, respectively (p less than 0.001). Four factors are known to affect cardiac output: heart rate, cardiac contractility, preload, and afterload. Fetal heart rate and mean acceleration, a measure of myocardial contractility, were unchanged after transfusion. A calculated mean increase in the fetoplacental volume of 18% in conjunction with an increase in umbilical venous pressure would indicate that cardiac preload was increased. We propose that intravascular intrauterine transfusion leads to an increased cardiac afterload, possibly by increasing blood viscosity. The fetal heart responds to the increased afterload by a decrease in stroke volume, leading to a fall in cardiac output.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Moise KJ Jr,Mari G,Fisher DJ,Huhta JC,Cano LE,Carpenter RJ Jrdoi
10.1016/0002-9378(90)91067-msubject
Has Abstractpub_date
1990-09-01 00:00:00pages
776-84issue
3eissn
0002-9378issn
1097-6868pii
0002-9378(90)91067-Mjournal_volume
163pub_type
杂志文章abstract:OBJECTIVE:We sought to examine the practice patterns and attitudes of obstetricians and gynecologists surrounding treatment of abnormal uterine bleeding (AUB). STUDY DESIGN:We conducted a cross-sectional study of members of the American College of Obstetricians and Gynecologists. Surveys, which were distributed using ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2011.05.016
更新日期:2011-10-01 00:00:00
abstract::There is a widespread recrudescence of venereal disease. The possible reasons for this are discussed. Each disease is then considered from the viewpoints of clinical course, diagnosis, and treatment. Treatment failures are discussed in detail, immunity is covered, and recommendations for the future conclude the presen...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90905-4
更新日期:1976-05-01 00:00:00
abstract::Twenty-three postmenopausal women with a median of 2 years past menopause (range, 1 to 12 years) and a median age of 52 years (range, 39 to 62 years) were recruited to participate in a longitudinal study designed to investigate the factors that influence the increase in bone density with subcutaneous estradiol and tes...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)90608-a
更新日期:1990-11-01 00:00:00
abstract:OBJECTIVE:Our purpose was to test the hypothesis that lipopolysaccharide potentiates the transcription of human placental prostaglandin H synthase-2 gene, a rate-limiting enzyme in prostaglandin synthesis. STUDY DESIGN:We transfected normal term cytotrophoblasts with a reporter vector containing either prostaglandin H...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(98)70422-3
更新日期:1998-03-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate sonohysterography in patients with endometrial cancer and to determine whether (1) transtubal fluid spill occurs during routine sonohysterography, (2) a critical infusion volume for spill exists, or (3) disseminated cancer cells demonstrate viability. STUDY DESIGN:At...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2008.03.042
更新日期:2008-09-01 00:00:00
abstract:OBJECTIVE:The objective of this study was to test the hypothesis that fetuses destined to deliver preterm do not reach their individual growth potential. STUDY DESIGN:In a case control design, data on 44 preterm deliveries at < or =34 weeks were compared with data on a control group of next consecutive term deliveries...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2001.115865
更新日期:2001-08-01 00:00:00
abstract:OBJECTIVE:Intraperitoneal adhesions are a significant cause of morbidity among women of reproductive age. Monocyte chemotactic protein 1 plays a role in the chemotaxis of mononuclear cells and fibroblasts into the peritoneal injury site. To evaluate its role in intraperitoneal adhesion formation, we used an established...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(98)70376-x
更新日期:1998-08-01 00:00:00
abstract::Tubal biopsy specimens were obtained at the time of tubal anastomosis in 26 previously sterilized women. Scanning electron microscopy showed that half the patients had abnormalities of tubal mucosa, including loss of mucosal folds, deciliation, and polyposis. These pathologic conditions, the morphologic features of wh...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(80)90015-0
更新日期:1980-09-01 00:00:00
abstract::Fifty-seven prenatal patients with no known exposure to the element mercury, or any of its compounds, were observed for change in whole blood total mercury concentration from the initial prenatal clinic examination through delivery and postpartum hospitalization. On hospital admission for labor and delivery, whole blo...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(82)90087-4
更新日期:1982-06-15 00:00:00
abstract::A review was made of the available literature on the sinusoidal heart rate (SHR) pattern. A specific definition of SHR was made in order to elucidate its clinical significance. According to this definition 41 tracings from 23 publications were classified as being either true SHR, equivocal, or a heart rate pattern oth...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/0002-9378(82)90789-x
更新日期:1982-04-15 00:00:00
abstract:OBJECTIVE:We compared preoperative and intraoperative assessments of pelvic organ prolapse to ascertain whether differences existed. STUDY DESIGN:This study is a retrospective analysis of information that was collected of 193 women who underwent reconstructive operation for pelvic organ prolapse between January 1994 a...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2002.122985
更新日期:2002-06-01 00:00:00
abstract::Cardiac function was cross-sectionally studied by means of M-mode and Doppler echocardiography in 40 fetuses of mothers with well-controlled insulin-dependent diabetes at 20 to 38 weeks of gestation. These variables were measured: interventricular septal thickness, ratio between the peak velocities during early passiv...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(91)90526-w
更新日期:1991-03-01 00:00:00
abstract::Sixty-six patients with fibrocystic mastopathy were enrolled in the trial after being selected according to clinical, radioultrasonographic, and histologic criteria. No characteristic hormonal profile was noted in most patients (52%). Estrogen receptors or progesterone receptors, or both, were found in 57% of patients...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(91)90680-p
更新日期:1991-05-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the effects of raloxifene on endothelial function in healthy, postmenopausal women. STUDY DESIGN:This was a randomized, double-blind, placebo-controlled crossover trial. Subjects (n = 19; mean age, 61 years) underwent endothelial function testing at baseline and aft...
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/mob.2003.28
更新日期:2003-02-01 00:00:00
abstract::The cellular localization of angiotensin II immunoreactivity and the presence of angiotensin II binding in rat ovaries were studied. Angiotensin II immunohistochemical staining was demonstrated throughout the corpora lutea of gonadotropin-stimulated immature rats and pseudopregnant adult rats, as well as in some strom...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(88)80122-4
更新日期:1988-08-01 00:00:00
abstract::The present investigation was designed to reassess the fractional postcoital test (PCT). Specifically, the study addressed the question of whether the internal cervical mucus sperm count is significantly different from the sperm counts at other cervical levels. By means of standardized methodology, 25 normal postcoita...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(79)90056-5
更新日期:1979-02-15 00:00:00
abstract::Serum gonadotropin, estrogen, and androgen levels were measured in samples obtained from 19 patients with polycystic ovarian disease (PCO) and from 10 normal women on day 2 to 4 of their menstrual cycles. In patients with PCO, the mean (plus or minus S.E.) concentration was significantly higher (P smaller than 0.001) ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(75)90081-2
更新日期:1975-02-15 00:00:00
abstract:BACKGROUND:The process of childbirth is one of the most crucial events in the future health and development of the offspring. The vulnerability of parturients and fetuses during the delivery process led to the development of intrapartum monitoring methods and to the emergence of alternative methods of delivery. However...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2020.05.025
更新日期:2020-09-01 00:00:00
abstract:OBJECTIVE:This study was undertaken to determine whether maternal posture (left lateral recumbent vs semi-Fowler position) had any effect on nonstress test results when the test was performed for a shortened period (10 minutes). STUDY DESIGN:In this randomized clinical trial of 108 patients with singleton pregnancies ...
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/mob.2000.105443
更新日期:2000-05-01 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:OBJECTIVE:The purpose of this study was to determine whether the levator plate is (1) horizontal in women with normal support, (2) different between women with and without prolapse, (3) related to levator hiatus and perineal body descent. STUDY DESIGN:Cohorts of cases with prolapse at least 1 cm below the hymen and no...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2006.01.055
更新日期:2006-05-01 00:00:00
abstract:OBJECTIVE:We sought to determine the pregnancy and infant outcomes of women with gestational diabetes who attempted vaginal birth after previous cesarean delivery. STUDY DESIGN:We conducted a retrospective cohort study to compare women with gestational diabetes with matched control subjects without diabetes who attemp...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2001.115176
更新日期:2001-05-01 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:OBJECTIVE:The objective was to compare the predictive accuracy (percentage of correct vs incorrect predictions) of salivary estriol levels (SalEst; Biex, Inc, Dublin, Calif) with that of the modified Creasy score for predicting preterm labor followed by preterm delivery. STUDY DESIGN:A triple-blinded prospective trial...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1016/s0002-9378(99)70703-9
更新日期:1999-01-01 00:00:00
abstract::The regional distribution of cerebral blood flow was assessed in eight control and eight morphometrically growth-retarded fetal lambs to determine whether perfusion patterns within the cerebral circulation are altered in this model of intrauterine growth retardation. Growth retardation was induced by repetitive emboli...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(84)90460-5
更新日期:1984-12-01 00:00:00
abstract::Colposacropexy procedures restore anatomically correct apical vaginal support on the levator plate at the ischial spine level. Venous hemorrhage resulting from laceration of presacral veins during suture fixation is the major hazard of this procedure. Titanium orthopedic bone anchor fixation minimizes this risk throug...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(97)70361-2
更新日期:1997-06-01 00:00:00
abstract:OBJECTIVE:The objective of the study was to investigate the differences in perinatal outcomes between various Asian ethnic subgroups at a national level. STUDY DESIGN:This is a retrospective cohort study of all non-Hispanic Chinese, Japanese, Filipino, Asian Indian, Korean, Vietnamese, Samoan, Guamanian, and Hawaiian ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2008.06.073
更新日期:2008-10-01 00:00:00
abstract::After treatment with human gonadotropins, 289 anovulatory women with apparently normal fallopian tubes became pregnant 379 times. Ten ectopic pregnancies in nine women were diagnosed, for an incidence of 2.7% of all conceptions. All the ectopic pregnancies were found in the fallopian tubes. Four patients had also an i...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(82)90006-0
更新日期:1982-08-01 00:00:00
abstract:OBJECTIVE:Improvement in endothelial function may be an important mechanism by which estrogen replacement therapy protects postmenopausal women against coronary artery disease. We determined whether the vascular effects of estradiol depend on the route of administration. STUDY DESIGN:Six weeks after surgically induced...
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/mob.2003.326
更新日期:2003-05-01 00:00:00
abstract::To test the hypothesis that prostaglandins mediate the high incidence of postoperative pain in patients undergoing mechanical tubal occlusion, we studied the effect of premedication with a prostaglandin synthetase inhibitor in patients having Falope ring sterilization. Fifty-two women were randomly divided into two gr...
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(85)90006-7
更新日期:1985-01-15 00:00:00