Abstract:
:A total of 1,996 fetal heart rate (FHR) tracings were analyzed to assess the prognostic significance of variable decelerations. Nineteen percent (186 cases) of 988 tracings with variable decelerations in the last 30 minutes of monitored labor exhibited signs of atypia listed in order of frequency: (1) loss of initial acceleration, (2) slow return to the baseline FHR, (3) loss of secondary acceleration, (4) prolonged secondary acceleration, (5) biphasic deceleration, (6) loss of variability during deceleration, and (7) continuation of the baseline at a lower level. Variable decelerations with one or more of these features were called atypical variable decelerations and predicted a high incidence of fetal acidosis and low Apgar scores. By contrast, adverse fetal outcome was uncommon with pure variable decelerations (p much less than 0.001) irrespective of the duration and amplitude of the deceleration. Both pure and atypical variable decelerations were associated with other FHR abnormalities in over 60% of the cases. However, the particularly unfavorable combination with decreased FHR variability and tachycardia or bradycardia was seen more frequently with atypical than with pure variable decelerations (p much less than 0.001) and predicted the highest incidence of low Apgar scores. It is concluded that atypical features aid greatly in the identification of distress in fetuses with variable decelerations.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Krebs HB,Petres RE,Dunn LJsubject
Has Abstractpub_date
1983-02-01 00:00:00pages
297-305issue
3eissn
0002-9378issn
1097-6868pii
0002-9378(83)90714-7journal_volume
145pub_type
杂志文章abstract:OBJECTIVE:The purpose of this study was to examine the association between gestational age (GA) at the time of treatment initiation for gestational diabetes mellitus (GDM) and maternal and perinatal outcomes. STUDY DESIGN:We conducted a secondary analysis of a multicenter randomized treatment trial of mild GDM in whic...
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.2015.06.022
更新日期:2015-10-01 00:00:00
abstract::In order to evaluate the ovarian and adrenal contribution to peripheral plasma concentrations of total testosterone (TTe), indixes of the plasma concentrations of free testosterone (FTeI), free 17 beta-hydroxysteroid androgens (FHSI), and testosterone-binding globulin (TeBG) during the menstrual cycle, women were exam...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90688-8
更新日期:1976-12-15 00:00:00
abstract:OBJECTIVES:It has recently been suggested that oxygen free radicals are involved in the high incidence of fetal dysmorphogenesis that is associated with diabetic pregnancies. The purpose of the current investigation was to study the effect of copper zinc superoxide dismutase, a free radical scavenging enzyme, on the pr...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(95)91323-8
更新日期:1995-10-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to evaluate the efficacy of osteopathic manipulative treatment (OMT) to reduce low back pain and improve functioning during the third trimester in pregnancy and to improve selected outcomes of labor and delivery. STUDY DESIGN:Pregnancy research on osteopathic manipulation optimi...
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.2014.07.043
更新日期:2015-01-01 00:00:00
abstract::Chronic intrauterine hypoxia was induced in third-trimester lamb fetuses by daily embolization of the maternal side of the placenta with nonradioactive microspheres. After delivery at term, the chronically hypoxic fetuses had significantly increased pulmonary artery pressures when compared to nonhypoxic control measur...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(78)90242-9
更新日期:1978-08-01 00:00:00
abstract::The intrauterine pressure data obtained from oxytocin-treated patients in dysfunctional labor, managed by a specific oxytocin regimen and a computer-defined goal of uterine activity, are analyzed. Questions asked concern the efficacy of the computer diagnosis of hypocontractility, the quantity of uterine activity need...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(83)91189-4
更新日期:1983-03-01 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::Paired maternal and fetal atrial natriuretic peptide concentrations were measured in 62 percutaneous umbilical blood samplings performed principally for the assessment and treatment of rhesus isoimmunization. Pretransfusion fetal atrial natriuretic peptide levels were significantly higher than maternal atrial natriure...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(91)90419-r
更新日期:1991-10-01 00:00:00
abstract:BACKGROUND:A rapid increase in restrictive abortion legislation in the United States has sparked renewed interest in self-managed abortion as a response to clinic access barriers. Yet little is known about knowledge of, interest in, and experiences of self-managed medication abortion among patients who obtain abortion ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2020.02.026
更新日期:2020-08-01 00:00:00
abstract:OBJECTIVE:We used validated sensitive and specific questions associated with clinically confirmed diagnoses of unexplained vulvar pain (vulvodynia) to compare the cumulative incidence of vulvar pain and prevalence of care-seeking behavior in Boston metropolitan area (BMA) and in Minneapolis/Saint Paul metropolitan area...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2013.09.033
更新日期:2014-01-01 00:00:00
abstract::All but three of the 270 women surviving eclampsia at the Margaret Hague Maternity Hospital in the period 1931 through 1951 were traced to 1973-74. Seventy-six have died and 13 were not re-examined. In white women having eclampsia in the first pregnancy carried to viability the remote mortality rate is not increased o...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90168-x
更新日期:1976-03-01 00:00:00
abstract::The deceleration delay index (DDI) is a statistical parameter computed by an on-line system which analyzes fetal monitor output for the temporal relationship between each uterine contraction and any associated deceleration of the fetal heart rate. A similar parameter describing this relationship is known to be quantit...
journal_title:American journal of obstetrics and gynecology
pub_type: 临床试验,杂志文章
doi:10.1016/0002-9378(77)90205-8
更新日期:1977-07-15 00:00:00
abstract::A prospective, randomized, double-blind evaluation of Loridine-Keflex prophylaxis in a homogeneous group of 32 patients undergoing sequential cervical conization and vaginal hysterectomy is reported. There was no infectious or febrile morbidity in the 18 oatuebts receuvubg abtubuitucs, Morbidity occurred in six of 14 ...
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(76)90901-7
更新日期:1976-05-01 00:00:00
abstract::Intravenous hydralazine was administered to 16 spontaneously hypertensive rats on day 21 of gestation. The radioactive labeled microsphere technique was used to assess the change in organ perfusion produced by the drug. Vascular resistance to most organs was decreased, except to the placentas, stomach, and cecum, wher...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(87)90283-3
更新日期:1987-02-01 00:00:00
abstract::Phencyclidine, a frequently abused drug, has been shown to cross the placenta and may cause harmful effects in the fetus. Therefore, a prospective study was undertaken to determine the extent of phencyclidine use during pregnancy. Two thousand three hundred twenty-seven pregnant women were screened for phencyclidine u...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(84)80063-0
更新日期:1984-02-01 00:00:00
abstract:OBJECTIVE:A select group of Escherichia coli strains known as uropathogenic cause pyelonephritis in nonpregnant individuals. We investigated whether Escherichia coli from gestational pyelonephritis represent a random population or possess common uropathogenic characteristics. STUDY DESIGN:Repetitive element sequence-b...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(96)70337-x
更新日期:1996-03-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to establish normal ranges for human epididymis protein 4 (HE4) serum levels in healthy women. STUDY DESIGN:HE4 levels were measured in healthy women and analyzed by age, menopausal status, and pregnancy status. Upper 95th percentiles were determined for normal ranges. RESULTS:...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,meta分析
doi:10.1016/j.ajog.2011.12.028
更新日期:2012-04-01 00:00:00
abstract:OBJECTIVE:To compare postoperative pain after laparoscopic and vaginal hysterectomy for benign disease.
STUDY DESIGN:A prospective randomized trial was designed to compare laparoscopic hysterectomy and vaginal hysterectomy in patients with uterine volume 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.2010.04.026 更新日期:2010-08-01 00:00:00
abstract:OBJECTIVE:The hypothesis for this investigation was that intravenous cocaine would result in an elevation of maternal plasma oxytocin levels in the baboon during late pregnancy. STUDY DESIGN:Five gravid chronically instrumented baboons had timed arterial blood samples obtained before and after an intravenous bolus coc...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(96)70344-7
更新日期:1996-03-01 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
abstract:OBJECTIVE:The objective of the study was to identify the external funding status of the most frequently cited obstetrical publications (citation classics) and to assess trends in funded vs nonfunded manuscripts as well as each publication's type of external funding. STUDY DESIGN:For the first objective, the citation c...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2013.05.021
更新日期:2013-08-01 00:00:00
abstract::Current ultrasonographic techniques offer a novel approach for the identification of a wide variety of placental abnormalities usually described postnatally by the pathologist. Placental vascular lesions, placental tumors, and abnormal placentation are potentially associated with perinatal complications and their diag...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1016/0002-9378(90)90645-n
更新日期:1990-11-01 00:00:00
abstract::In studying the mechanisms which govern estriol production in human pregnancy at term, 16 alpha OH-DHEA, 16alpha-OH-DHEA sulfate, and unbound unconjugated cortisol were measured in peripheral venous plasma of 28 healthy women and in cord venous and arterial plasms of their newborn infants at the time of elective cesar...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(75)90468-8
更新日期:1975-03-01 00:00:00
abstract::In the present study second-trimester maternal serum alpha-fetoprotein levels were analyzed from 146 pregnancies associated with fetal open spina bifida to identify whether affected pregnancies from the black population were associated with higher maternal serum alpha-fetoprotein levels than their white counterparts. ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(90)90379-l
更新日期:1990-02-01 00:00:00
abstract:OBJECTIVE:Our aim was to determine whether hysterotomy and selective removal of an acardiac twin could improve the outcome of the "pump" twin. STUDY DESIGN:A literature and case review of the outcome of the acardiac twin malformation was performed. When an acardiac malformation was diagnosed at 19 weeks' gestation the...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(11)91620-2
更新日期:1992-07-01 00:00:00
abstract:OBJECTIVE:The efficacy, safety, and antibiotic-related charges for once-daily gentamicin with twice-daily clindamycin were compared with those of thrice-daily dosing of these antibiotics. STUDY DESIGN:Patients with puerperal endometritis or with chorioamnionitis in labor assessed to be at risk for endometritis were ra...
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/s0002-9378(97)70269-2
更新日期:1997-10-01 00:00:00
abstract:OBJECTIVES:Preeclampsia is associated with hypertension, fetal growth retardation, and proteinuria. We hypothesized that impaired vascular nitric oxide synthesis during pregnancy may be an important causal factor in preeclampsia. STUDY DESIGN:An inhibitor of nitric oxide synthase, L-nitro-arginine methyl ester, or a n...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(93)90299-x
更新日期:1993-11-01 00:00:00
abstract:OBJECTIVE:Our purpose was to evaluate the placental pathology in women with preeclampsia occurring at varying gestational ages. STUDY DESIGN:This was a secondary analysis of a prospective observational study of placentas from prespecified complicated pregnancies routinely submitted for standardized examination. For th...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2013.09.010
更新日期:2014-01-01 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::Cervical cultures of 2013 consecutive obstetric patients with no history of genital herpes simplex virus infection were used to determine the frequency of asymptomatic herpes simplex virus shedding in labor. Four (0.20%) of these patients had positive cultures. None of the exposed neonates developed clinical evidence ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90034-8
更新日期:1988-03-01 00:00:00