Abstract:
OBJECTIVE:Intrapartum fetal heart rate (FHR) recordings in twins were compared for fetal signal loss during both stages of labor to assess the quality of these recordings by the method that had been used: external ultrasound or directly via a scalp electrode. STUDY DESIGN:Analysis of recordings collected between January 1, 1994, and January 1, 2002, from consecutive twin deliveries at the Vrije Universiteit Medical Center in Amsterdam. One hundred seventy-two twins that delivered via the vaginal route were included in the study. FHR recordings had a duration of at least 1 hour before the birth of the second twin. Subdivision took place on the basis of the recording technique, ie, ultrasound or scalp electrode. FHR data was obtained with HP-M1350 cardiotocographs. The status (pen on, pen off, maternal signal) and the mode of the signals were acquired. The duration of pen lifts and maternal signals was divided by the total duration of the recording. Statistical analyses were performed with the Mann-Whitney U test and the Wilcoxon signed ranks test. RESULTS:Recordings obtained via ultrasound demonstrated significantly more fetal signal loss than those obtained via the direct mode, particularly in the second stage. Approximately 26% to 33% of first stage and 41% to 63% of second stage ultrasound intrapartum FHR recordings in twins exceeded the International Federation of Gynecology and Obstetrics (FIGO) criteria for fetal signal loss. CONCLUSION:Intrapartum FHR monitoring via ultrasound provides far poorer quality FHR signals than the direct mode. The direct mode deserves a more prominent position in fetal surveillance than it currently has.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Bakker PC,Colenbrander GJ,Verstraeten AA,Van Geijn HPdoi
10.1016/j.ajog.2004.04.037subject
Has Abstractpub_date
2004-12-01 00:00:00pages
2114-9issue
6eissn
0002-9378issn
1097-6868pii
S0002937804004569journal_volume
191pub_type
杂志文章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
abstract::To evaluate the relationship between cigarette smoking and the occurrence of placenta previa, we used interview and medical record data to conduct a case-control analysis of 69 placenta previa cases and 12,351 controls. The unadjusted relative risk estimate of placenta previa for women reported to have "ever smoked" d...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(91)90217-f
更新日期:1991-07-01 00:00:00
abstract:OBJECTIVE:During early pregnancy fetal cytotrophoblast cells invade the uterus and penetrate the basement membrane, a property that is characteristic of malignant cells. However, unlike tumor invasion, trophoblast invasion of the uterus is under strict control. This control limits invasion, so that it primarily remains...
journal_title:American journal of obstetrics and gynecology
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更新日期:1994-09-01 00:00:00
abstract:OBJECTIVE:Estrogen receptor-positive cancers that initially respond to hormone therapy often progress to a resistant state. The breast cancer cell line T47Dco is a model for such resistance. It is a polymorphic line, composed of multiple cell populations that demonstrate the presence of mutant estrogen receptors by clo...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(11)90590-0
更新日期:1992-04-01 00:00:00
abstract::Fetuses from term and postmature rabbits were obtained and their livers incubated with palmitate-1-14C in room air. The net incorporation of the fatty acids into ketone bodies, lipids, and Co2 was measured at fixed and variable concentrations of cold glucose. Data from postmature liver show that lipid synthesis is dec...
journal_title:American journal of obstetrics and gynecology
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更新日期:1980-02-15 00:00:00
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 befor...
journal_title:American journal of obstetrics and gynecology
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更新日期:1990-09-01 00:00:00
abstract:OBJECTIVE:We attempted to determine whether the antiemetic ondansetron would be more effective than promethazine in treating hyperemesis gravidarum. STUDY DESIGN:Patients with hyperemesis gravidarum who required hospital admission were randomized to receive either intravenous ondansetron (n = 15) or intravenous promet...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章,随机对照试验
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更新日期:1996-05-01 00:00:00
abstract::We studied differences in the role of genetic factors in prematurity and intrauterine growth retardation with the use of data on 312 Amish singleton live children ascertained from Amish records in Lancaster county, Pennsylvania, between 1969 and 1980. Birth and death certificates were obtained on all children, and inb...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(87)80181-3
更新日期:1987-08-01 00:00:00
abstract::Thirty-two patients with uncomplicated twin pregnancies had ultrasonographic examinations for genetic amniocentesis, confirmation of twinning, or assessment of fetal growth. The dividing membranes between the fetuses were visualized, and the thickness of the membranes was measured. With a thickness of 2 mm used as a c...
journal_title:American journal of obstetrics and gynecology
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更新日期:1989-12-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine whether ultrasonography is more accurate than vaginal examination in the determination of fetal occiput position in the second stage of labor. STUDY DESIGN:Eighty-eight patients in the second stage of labor were evaluated by vaginal examination and by combined trans...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.01.029
更新日期:2004-08-01 00:00:00
abstract::Perimenopause represents a transition period lasting about 5 years before the permanent cessation of spontaneous menses. During this transition, the emphasis of clinical care changes. Although women still need effective contraception during perimenopause, issues including loss of bone mineral density, menstrual cycle ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
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更新日期:2001-08-01 00:00:00
abstract:OBJECTIVE:We sought to determine the validity of colposcopically directed cervical biopsies as a diagnostic test to define the degree of cervical intraepithelial neoplasia (CIN). STUDY DESIGN:In a prospective multicenter trial, patients undergoing excisional procedures of the transformation zone additionally had colpo...
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/j.ajog.2010.05.033
更新日期:2010-10-01 00:00:00
abstract:OBJECTIVE:Our purpose was to determine the frequency and safety of the use of epidural anesthesia and the correlation between bleeding time and maternal-neonatal bleeding complications in a group of pregnant women who participated in a multicenter trial of low-dose aspirin in pregnancy. STUDY DESIGN:Data regarding typ...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:1995-05-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2007.09.045
更新日期:2008-03-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
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更新日期:1982-11-15 00:00:00
abstract:OBJECTIVE:Our purpose was to study the distribution of symptoms and disorders of urinary incontinence or prolapse among white and Hispanic women. STUDY DESIGN:Data were collected for all new patients referred to the urogynecology clinic over a 2-year period. One hundred twenty-one Hispanic and 50 white women consecuti...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(96)70443-x
更新日期:1996-02-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2000.108875
更新日期:2000-11-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
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更新日期:1994-04-01 00:00:00
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pub_type: 杂志文章,随机对照试验
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更新日期:2010-05-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2001.117189
更新日期:2001-09-01 00:00:00
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更新日期:1976-04-01 00:00:00
abstract:OBJECTIVE:Although a few studies have evaluated the effect of meconium on the lecithin/sphingomyelin ratio for testing of fetal lung maturity, to date these studies have assessed only the lecithin-sphingomyelin ratio of amniotic fluid contaminated with meconium. The purpose of this study was (1) to determine whether me...
journal_title:American journal of obstetrics and gynecology
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doi:10.1016/s0002-9378(98)70038-9
更新日期:1998-12-01 00:00:00
abstract::The bioavailability of a single dose of intranasal nafarelin was evaluated in 15 healthy female volunteers. Each subject received a 400 micrograms intranasal and a 25 micrograms intravenous dose of nafarelin separated by at least 7 days. Blood samples were obtained frequently after each dose for determination of nafar...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(92)91710-r
更新日期:1992-02-01 00:00:00
abstract::Clear cell carcinoma originating in the abdominal wall is rare and usually develops within endometriotic implants in the scar. We describe 2 patients: a 42 year old with a 15 cm mass on the abdominal wall treated with neoadjuvant chemotherapy and excision and a 51 year old with a 6 cm abdominal mass treated with excis...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/j.ajog.2012.05.029
更新日期:2012-08-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the effect of early oral bowel stimulation with osmotic laxatives on gastrointestinal function, postoperative nausea and vomiting (PONV) and pain in patients who undergo fast-track abdominal hysterectomy. STUDY DESIGN:This was a double-blind, placebo-controlled stud...
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.2006.10.902
更新日期:2007-04-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
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更新日期:2013-10-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,随机对照试验
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更新日期:2016-03-01 00:00:00
abstract::Prostacyclin is a potent vasodilator produced by both maternal and fetal tissues that dilates the umbilical placental vasculature in vitro. To test the hypothesis that prostacyclin dilates the fetal placental circulation in vivo, we measured blood flow by the radioactive microsphere technique in six unanesthetized nea...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(89)90303-7
更新日期:1989-04-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
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更新日期:2003-07-01 00:00:00
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journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(95)90099-3
更新日期:1995-01-01 00:00:00