Abstract:
OBJECTIVE:To compare last menstrual period and ultrasonography in predicting delivery date. METHODS:We used ultrasound to scan 17,221 nonselected singleton pregnancies at 8-16 completed weeks. The last menstrual period (LMP) was considered certain in 13,541 and uncertain in 3680 cases. The duration of pregnancy from the scan to the day of spontaneous delivery was predicted by crown-rump length, biparietal diameter (BPD), and femur length (FL) using linear regression models, and the results were compared with estimates based on LMP. RESULTS:At all gestational ages, ultrasound was superior to certain LMP in predicting the day of delivery by at least 1.7 days. When deliveries before 37 weeks were excluded, crown-rump length measurement of 15-60 mm (corresponding to 8-12.5 weeks) had the lowest prediction error of 7.3 days. After that time, BPD (at least 21 mm) showed a similar error (7.3 days) and was more precise than crown-rump length. Femur length was slightly less accurate than crown-rump length or BPD. Regression models using a combination of any two or three ultrasonic variables did not improve accuracy of prediction. When ultrasound was used instead of certain LMP, the number of postterm pregnancies decreased from 10.3% to 2.7% (P <.001). CONCLUSION:Ultrasound was more accurate than LMP in dating, and when it was used the number of postterm pregnancies decreased. Crown-rump length of 15-60 mm was superior to BPD, but then BPD (at least 21 mm) was more precise. Combining more than one ultrasonic measurements did not improve dating accuracy.
journal_name
Obstet Gynecoljournal_title
Obstetrics and gynecologyauthors
Taipale P,Hiilesmaa Vdoi
10.1016/s0029-7844(00)01131-5subject
Has Abstractpub_date
2001-02-01 00:00:00pages
189-94issue
2eissn
0029-7844issn
1873-233Xpii
S0029-7844(00)01131-5journal_volume
97pub_type
杂志文章abstract:OBJECTIVE:To review cases of anti-c isoimmunization and determine the most appropriate management strategies. METHODS:We performed a review of 102 pregnancies managed at The Ohio State University from 1967 to 2001 for anti-c isoimmunization. Of these, 55 had complete data and are included in this report. Information c...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000109206.22354.2C
更新日期:2004-01-01 00:00:00
abstract::Phenylketonuria (PKU) is an autosomal recessive disorder of phenylalanine (Phe) metabolism characterized by a deficiency of the hepatic enzyme, phenylalanine hydroxylase, an enzyme responsible for the conversion of phenylalanine to tyrosine, and elevated levels of Phe and Phe metabolite. All women with PKU or hyperphe...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e3181c6f93d
更新日期:2009-12-01 00:00:00
abstract::As hospitals and medical schools confronted coronavirus disease 2019 (COVID-19), medical students were essentially restricted from all clinical work in an effort to prioritize their safety and the safety of others. One downstream effect of this decision was that students were designated as nonessential, in contrast to...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000004113
更新日期:2020-10-01 00:00:00
abstract:OBJECTIVE:To evaluate the association of sociodemographic and hospital characteristics with adherence to National Comprehensive Cancer Network treatment guidelines for stage IB-IIA cervical cancer and to analyze the relationship between adherent care and survival. METHODS:This is a retrospective population-based cohor...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000002591
更新日期:2018-05-01 00:00:00
abstract:OBJECTIVE:To describe the prevalence of urinary incontinence during exercise in women, estimate whether exercise intensity is related to leakage severity, and report women's assessments of incontinence as a barrier to exercise. METHODS:Questionnaires were mailed to 5,130 women aged 18-60 years drawn from National Fami...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000168455.39156.0f
更新日期:2005-08-01 00:00:00
abstract:OBJECTIVE:To examine whether there are associations between pregnancy intention (intended, unwanted, mistimed, or ambivalent) and negative birth and maternal outcomes: low birth weight (less than 2,500 g), preterm delivery (fewer than 37 weeks), small for gestational age, premature labor, hypertension, and other matern...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000255666.78427.c5
更新日期:2007-03-01 00:00:00
abstract:OBJECTIVE:To evaluate whether the menopausal transition is associated with worsening of urinary incontinence symptoms over 6 years in midlife women. METHODS:We analyzed data from 2,415 women who reported monthly or more incontinence in self-administered questionnaires at baseline and during the first six annual follow...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e31816386ce
更新日期:2008-03-01 00:00:00
abstract:BACKGROUND:Inflammatory pseudotumor is a rare benign cause of lymphadenopathy previously reported in several anatomic locations that can simulate malignant neoplasm. CASE:A postmenopausal woman presented with abdominal pain, generalized malaise, leukocytosis, and intermittent fevers up to 102 degrees F. A 5-day course...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000201973.13715.ee
更新日期:2006-09-01 00:00:00
abstract::Patient care emergencies may occur at any time in any setting, particularly the inpatient setting. It is important that obstetrician-gynecologists prepare themselves by assessing potential emergencies, establishing early warning systems, designating specialized first responders, conducting emergency drills, and debrie...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,实务指引
doi:10.1097/01.AOG.0000444442.04111.c6
更新日期:2014-03-01 00:00:00
abstract:OBJECTIVE:To evaluate the effectiveness and safety of the vaginal application of misoprostol for induction of labor at term, with the interval duration from labor induction to vaginal birth as the primary outcome measure. METHODS:Two hundred twenty-two women with indications for induction of labor at term were randomi...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0029-7844(96)00220-7
更新日期:1996-10-01 00:00:00
abstract::A method of ablating the endometrium has been introduced into clinical practice that uses radiofrequency electromagnetic energy to heat the endometrium, using a probe inserted through the cervix. Preliminary studies suggest that over 80% of patients treated will develop either amenorrhea or a significant reduction in ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/00006250-199011000-00032
更新日期:1990-11-01 00:00:00
abstract::Advances within the medical profession have resulted in an increase in available medical therapeutic options and minimally invasive surgical techniques for common gynecologic conditions. In many circumstances, this has led to a reduction in surgical volume for many common conditions in benign gynecology. There is also...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e3182a5fde5
更新日期:2013-11-01 00:00:00
abstract::Ectopic pregnancy is suspected when a pregnancy test is positive and an Arias-Stella phenomenon with decidua is seen on endometrial curettings in the absence of chorionic villi and trophoblast. We performed immunoperoxidase stains for beta-hCG, hPL, placental alkaline phosphatase, and keratin (AE1/AE3) on endometrial ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1991-09-01 00:00:00
abstract::A 40-year-old woman presented to her gynecologist with an apparent unilateral neuropathy of the lateral cutaneous femoral nerve of the thigh (meralgia paresthetica). On examination, the sensory disturbance extended outside the usual distribution of the lateral femoral cutaneous nerve, suggesting a more proximal lumbar...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1979-02-01 00:00:00
abstract:OBJECTIVE:To evaluate whether a second antenatal corticosteroid course is associated with an increased risk of neonatal sepsis after preterm premature rupture of membranes (PROM). METHODS:This secondary analysis is a cohort study with data from the Maternal-Fetal Medicine Units study on magnesium for neuroprotection. ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000000460
更新日期:2014-11-01 00:00:00
abstract::This investigation has reexamined the measurement of the femur length and the use of this measurement as a growth and dating parameter. Straight-line measurements of shaft length were found to be smaller than measurements made along the bone curvature. However, the maximum difference did not exceed 2 mm. Thus, because...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1985-07-01 00:00:00
abstract:OBJECTIVE:To study the relation between the timing of the postpartum examination and the postpartum Papanicolaou smear. METHODS:One hundred eighty-four women in labor at Arlington Community Hospital were randomized to receive their postpartum Papanicolaou smear at 4, 6, or 8 weeks after delivery. Samples from the exoc...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,随机对照试验
doi:
更新日期:1994-05-01 00:00:00
abstract:OBJECTIVE:To describe the presenting symptoms of women with depression in two obstetrics and gynecology clinics, determine depression diagnosis frequency, and examine factors associated with depression diagnosis. METHODS:Data were extracted from charts of women screening positive for depression in a clinical trial tes...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e31829999ee
更新日期:2013-08-01 00:00:00
abstract:OBJECTIVE:To determine whether severe preeclampsia is associated with genetic thrombophilic mutations or other types of thrombophilia. METHODS:A case-control study compared 63 consecutive women with severe preeclampsia evaluated at our institution between November 1997 and April 1999 with 126 control women matched for...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(00)00861-9
更新日期:2000-07-01 00:00:00
abstract:OBJECTIVE:To estimate normal ranges for postpartum maternal vital signs. METHODS:We conducted a multicenter prospective longitudinal cohort study in the United Kingdom. We recruited women before 20 weeks of gestation without significant comorbidities and with accurately dated singleton pregnancies. Women recorded thei...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000004239
更新日期:2021-02-01 00:00:00
abstract:OBJECTIVE:To analyze the influence of body mass on the outcome of surgery for urinary incontinence. METHODS:Among 291 women operated on for stress incontinence, 187 (64%) were available for follow-up at 5 years. Eighty women had anterior colporrhaphy, 49 anterior colporrhaphy with needle suspension of the bladder neck...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(98)00513-4
更新日期:1999-05-01 00:00:00
abstract::Intrauterine exposure to diethylstilbestrol (DES) has been associated with ths subsequent rare development of clear cell adenocarcinoma of the vagina and cervix in exposed female progeny. These tumors have been seen thus far in patients between the ages of 7 and 29 years. In addition, nonmalignant epithelial and struc...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,评审
doi:
更新日期:1981-11-01 00:00:00
abstract:OBJECTIVES:To document individual variations in the rise in insulin requirements during type I diabetic pregnancies, to relate the degree of increase to maternal characteristics and fetal outcome, and to examine these factors in a subgroup of patients experiencing a large fall in insulin requirement in the third trimes...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1994-02-01 00:00:00
abstract::To evaluate the effectiveness of a physician-based intervention to promote smoking cessation during pregnancy, we conducted this randomized controlled trial in the resident-staffed prenatal clinics at the University of North Carolina Women's Hospital . Two hundred fifty prenatal patients who smoked were enrolled at th...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1016/0029-7844(95)00492-0
更新日期:1996-04-01 00:00:00
abstract:OBJECTIVE:To compare lamellar body counts with the lecithin/sphingomyelin ratio and phosphatidylglycerol analysis in terms of assessment of risk of respiratory distress syndrome (RDS). METHODS:Lamellar body counts, lecithin-sphingomyelin ratios (L/Ss), and phosphatidylglycerol levels were assessed in 1611 amniotic flu...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1016/s0029-7844(00)01133-9
更新日期:2001-02-01 00:00:00
abstract:BACKGROUND:Double aneuploidies account for 0.21-2.8% of spontaneous abortions resulting from chromosomal abnormalities. Rarely, cell-free DNA testing detects multiple aneuploidies; however, to discern among maternal, placental, and fetal origin, further evaluation is required. CASE:A 49-year-old woman, gravida 5 para ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000001390
更新日期:2016-06-01 00:00:00
abstract::Most large series of neonatal ovarian cysts are limited to those diagnosed in the newborn period. Eight cases of fetal ovarian cysts diagnosed prenatally by ultrasound have been reported, only one of which was aspirated in utero. Reported is the youngest fetus to undergo in utero aspiration of an ovarian cyst to reduc...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1986-09-01 00:00:00
abstract:OBJECTIVE:To examine whether selected genetic polymorphisms in the infant are associated with spontaneous preterm birth (less than 37 weeks) among children with or without later-diagnosed cerebral palsy. METHODS:Exploratory case-control study investigating the relationship of gestational age at delivery to 31 single n...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000252712.62241.1a
更新日期:2007-02-01 00:00:00
abstract:OBJECTIVES:To compare satisfaction with and adherence to the contraceptive vaginal ring and a daily low-dose oral contraceptive pill (OCP) among college and graduate students using a novel method of electronic data collection. METHODS:We randomly assigned 273 women to the contraceptive vaginal ring (n=136) or OCP (n=1...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,多中心研究,随机对照试验
doi:10.1097/AOG.0b013e3181cf45dc
更新日期:2010-03-01 00:00:00
abstract:OBJECTIVE:To determine the relation between cervical conization and preterm birth. METHODS:All Danish women with singleton pregnancies who gave birth to their first infant in 1982 and second infant during the time period 1982-1987 were included in a register-based cohort study. Information on pregnancy outcome and cer...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1993-06-01 00:00:00