Abstract：
OBJECTIVE:To evaluate the length of the second stage of labor in relation to increasing maternal prepregnancy body mass index (BMI) among nulliparous parturient women, and to determine whether route of delivery differs among obese, overweight, and normal-weight women reaching the second stage of labor. METHODS:We performed a secondary analysis of a multicenter trial of fetal pulse oximetry conducted among 5,341 nulliparous women who were induced or labored spontaneously at 36 weeks or more of gestation. Normal weight was defined as BMI of 18.5-24.9 kg/m, overweight was a BMI of 25.0-29.9 kg/m, and obese was a BMI of 30 or higher. RESULTS:Of the 5,341 women, 97% had prepregnancy BMI recorded. Of these, 3,739 had BMIs of 18.5 or higher and reached the second stage of labor. Increasing maternal BMI was not associated with second stage duration: normal weight, 1.1 hour; overweight, 1.1 hour; and obese, 1.0 hours (P=.13). Among women who reached the second stage, as BMI increased, so did the likelihood that the woman had undergone induction of labor. Even so, the lack of association between second-stage duration and BMI did not vary by method of labor onset (P=.84). The rate of cesarean delivery in the second stage did not differ by increasing BMI (normal weight 7.1%, overweight 9.6%, obese 6.9%, P=.17). CONCLUSION:Among nulliparous women who reach the second stage of labor, increasing maternal BMI is not associated with a longer second stage or an increased risk of cesarean delivery. LEVEL OF EVIDENCE:II.
journal_name
Obstet Gynecoljournal_title
Obstetrics and gynecologyauthors
Robinson BK,Mapp DC,Bloom SL,Rouse DJ,Spong CY,Varner MW,Ramin SM,Sorokin Y,Sciscione A,Mercer BM,Thorp JM Jr,Malone FD,Harper M,Ehrenberg Hdoi
10.1097/AOG.0b013e318236fbd1subject
Has Abstractpub_date
2011-12-01 00:00:00pages
1309-1313issue
6eissn
0029-7844issn
1873-233Xpii
00006250-201112000-00015journal_volume
118pub_type
杂志文章,多中心研究abstract：:This report investigates the effect of chorioamnionitis on infant mental and psychomotor development at one year through the prospective study of 698 preterm pregnancies complicated by premature rupture of membranes and managed expectantly without antenatal corticosteroids or tocolytic agents. Ninety-two mothers (13%)...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1987-08-01 00:00:00
abstract：:A rising cesarean birth rate, both nationally and at our institution, led us to attempt to reverse the trend. Vaginal birth after cesarean (VBAC) was introduced as an alternative to repeat cesarean in 1982. The impact of VBAC on the cesarean rate for our institution was assessed from 1982-1988. Over the period studied...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/00006250-199102000-00006
更新日期：1991-02-01 00:00:00
abstract：:Fertility and pregnancy complications were assessed in 137 women at risk of having inherited the gene for autosomal dominant polycystic kidney disease. Seventy-six (55%) of these subjects were found to have polycystic kidney disease (multiple renal cysts). The remaining 61 women served as controls. The prevalence of f...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1983-05-01 00:00:00
abstract：:Patients with gestational diabetes were divided into two groups according to the results of three-hour oral glucose tolerance tests. Those with fasting euglycemia (serum glucose 95 mg/dL or lower) on oral glucose tolerance test (class A) were treated with diet alone, whereas those with fasting hyperglycemia on oral gl...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1987-10-01 00:00:00
abstract：OBJECTIVE:To measure the serum levels of interleukin (IL)-8, prostaglandin (PG) F2alpha, and beta-endorphin in parturients with acupuncture treatment and in controls to clarify the effect of acupuncture and duration of labor on the serum levels of substances active in cervical ripening and dilatation. METHODS:A matche...
journal_title：Obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/s0029-7844(98)00200-2
更新日期：1998-08-01 00:00:00
abstract：:Autoimmune oophoritis is a rare cause of premature ovarian failure. Previous studies of autoimmune oophoritis have detailed the clinical, immunologic, and histologic findings. The gross pathologic features of the involved ovaries have detailed the clinical, immunologic, and histologic findings. The gross pathologic fe...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1989-09-01 00:00:00
abstract：:At present a large number of different charts are used for prediction of gestational age from sonar biparietal diameter (BPD). In this report the reasons for these observed differences are presented. Additionally, the usefulness of all these charts is questioned because a) the mean differences in 7059 BPDs derived by ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1978-10-01 00:00:00
abstract：:The hospital-based alternative birth room has become a popular alternative to the conventional labor and delivery room setting. Responses to a mailed questionnaire from 78 of 82 (95%) Washington State hospitals with obstetric services were used to relate available birth options to alternative birth room status and obs...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1981-11-01 00:00:00
abstract：:Estrogen treatment of postmenopausal women has been suggested to improve mood and psychological function. However, this remains controversial because previous studies involved heterogeneous groups, were not double blind, and included women who were also experiencing somatic symptoms that were relieved by estrogen. A r...
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：1991-12-01 00:00:00
abstract：OBJECTIVE:To determine the prevalence, magnitude, and type of fetal acidemia associated with contemporary obstetric anesthetic techniques. METHODS:Umbilical artery blood gases were obtained in 1601 singleton pregnancies delivered by elective cesarean. RESULTS:General anesthesia was used in 371 (23%) women, epidural i...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0029-7844(94)p4401-9
更新日期：1995-01-01 00:00:00
abstract：:Individuals with Down syndrome have abnormally short long bones. Sonography has previously revealed slightly shortened femurs and thickened nuchal folds in affected second-trimester fetuses. Humeral and femoral lengths and nuchal folds were evaluated in 400 normal second-trimester controls and in 24 consecutive Down s...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/00006250-199102000-00012
更新日期：1991-02-01 00:00:00
abstract：:Two patients with sickle-delta gamma thalassemia are reported who experienced the typical complications of sickling disorders in the last 2 months of 4 pregnancies. The diagnosis, genetics, and management of pregnancy in this rare hematologic disease, which causes minimal morbidity in the nonpregnant woman, are discus...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1981-07-01 00:00:00
abstract：OBJECTIVE:Despite a change of fetal physiologic and biochemical functions with gestational age, stationary umbilical cord acid-base reference values are used as measures of obstetric care quality. The aim of this study was to assess the risk of low Apgar score relative to low pH when using stationary versus gestational...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(03)00512-x
更新日期：2003-08-01 00:00:00
abstract：OBJECTIVE:To determine the correlation between the maximal urethral closure pressure and the stress leak-point pressure in patients with genuine stress incontinence, and to define a critical stress leak-point pressure value to detect patients with a low-pressure urethra, as defined by a maximal urethral closure pressur...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0029-7844(95)00014-i
更新日期：1995-05-01 00:00:00
abstract：:A nearly unique case is presented of pleural and peritoneal endometriosis with bloody pleural effusion and 4700 cc of bloody ascites. Theories of pathogenesis, differential diagnosis, and treatment are discussed. This represents another of the protean manifestations of endometriosis to complement the many others descr...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章,评审
doi：
更新日期：1976-01-01 00:00:00
abstract：OBJECTIVE:We describe the current state of prevention of neonatal group B streptococcal infections and present recent advances toward the development of a maternal vaccine for prevention of this disease. DATA SOURCES:We used a MEDLINE search of the Index Medicus from 1976-1992 for articles regarding group B streptococ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章,评审
doi：
更新日期：1992-08-01 00:00:00
abstract：OBJECTIVE:To determine whether calcium supplementation prevents progression to severe disease in preterm nulliparous women with mild preeclampsia. METHODS:Seventy-five women hospitalized at 24-36 weeks' gestation because of mild preeclampsia were randomized to receive either 2 g/day of elemental calcium (36 women) or ...
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)00052-s
更新日期：1995-06-01 00:00:00
abstract：OBJECTIVE:To estimate why the live birth rate per implanted embryo is higher in twin than in singleton pregnancies. METHODS:Data from 1,159 singleton and 523 dichorionic twin pregnancies, obtained after assisted conception, were included. To account for the higher live birth rate observed in twin pregnancies, two poss...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0b013e31823bf978
更新日期：2012-01-01 00:00:00
abstract：OBJECTIVE:To estimate the patterns of care and outcome of women with early cervical cancer in the United States based on surgical or radiation intent-to-treat principles. METHODS:The Surveillance, Epidemiology, and End Results 1995 public-use file was the data source. Subjects between the ages of 15 and 80 years at di...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(00)01117-0
更新日期：2001-02-01 00:00:00
abstract：BACKGROUND:Successful DNA typing after rape is limited when only a few sperm and numerous vaginal cells are recovered from a swab, resulting in an extremely unfavorable ratio of male to female DNA. The goal of this study was to develop a protocol involving sperm cell sorting with flow cytometry based on differences in ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(99)00373-7
更新日期：1999-10-01 00:00:00
abstract：:Fetal oxytocin contribution to the mother during spontaneous labor was investigated using a specific and sensitive radioimmunoassay to measure oxytocin in blood, amniotic fluid, and urine. In 26 subjects with spontaneous labor and vaginal delivery (Group I) and 18 subjects with cesarean section after labor (Group II),...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1978-08-01 00:00:00
abstract：:The first of a 2-part trial consisted of a double-blind randomized pilot study in which 4 groups of 10 patients near term received 1 of the following hormonal combinations in a vaginal gel 15 hours before surgical induction of labor: 1) prostaglandin F2 alpha (PGF2 alpha) and relaxin; 2) relaxin and estradiol; 3) estr...
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：1981-11-01 00:00:00
abstract：OBJECTIVE:To determine whether obstetric admissions to the intensive care unit (ICU) are useful quality-assurance indicators. METHODS:We analyzed retrospectively obstetric ICU admissions at two tertiary care centers from 1991 to 1997. RESULTS:The 131 obstetric admissions represented 0.3% of all deliveries. The majori...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(99)00274-4
更新日期：1999-08-01 00:00:00
abstract：OBJECTIVE:To determine patient factors associated with hospital care costs for preterm labor and to develop a clinically applicable cost model for evaluating economic consequences of interventions to reduce preterm-labor hospitalizations. METHODS:Maryland state hospital discharge data from 1993-1996 were used to ident...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(00)00863-2
更新日期：2000-07-01 00:00:00
abstract：OBJECTIVE:To determine the serum level of macrophage colony-stimulating factor in ovarian cancer patients in order to evaluate its role as a marker for ovarian cancer. METHODS:Serum macrophage colony-stimulating factor levels were assayed in 69 patients with epithelial ovarian cancer, 55 with benign ovarian tumors, an...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1993-12-01 00:00:00
abstract：BACKGROUND:Microangiopathic disorders during pregnancy remain a diagnostic challenge because these conditions often imitate more common obstetric diseases. CASE:A 31-year-old multigravid woman delivered at term with a postpartum course complicated by laboratory indices consistent with hemolysis, elevated liver enzymes...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0000000000001675
更新日期：2016-12-01 00:00:00
abstract：OBJECTIVE:To examine possible changes in cardiac function in fetuses of pregestational diabetic mothers. METHODS:We conducted a prospective longitudinal study of 31 women whose pregnancies were between 22 weeks' gestation and term, and who had pregestational diabetes. All diabetic women included in the study had glyco...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(99)00003-4
更新日期：1999-06-01 00:00:00
abstract：:In order to ascertain the usefulness of urinary 17-ketosteroids (17-KS) in the evaluation of hirsutism, 28 paired determinations of 17-KS and serum androgens were performed in 26 hirsute women before (control) and after (post Dex) 7 days of dexamethasone (Dex) administration. Upper normal control and post Dex urinary ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1977-04-01 00:00:00
abstract：OBJECTIVE:To evaluate the sexual and reproductive health characteristics of women in treatment for opioid use disorder in Michigan and explore services provided and desired. METHODS:We conducted a cross-sectional study of female patients aged 18-50 years who accessed opioid use disorder treatment at 22 randomly select...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0000000000003666
更新日期：2020-02-01 00:00:00
abstract：OBJECTIVE:To study the plasma levels of homocysteine in preeclampsia and relate them to insulin sensitivity. METHODS:In association with a 3-hour intravenous glucose-tolerance test (glucose 0.3 g/kg at 0 and 0.03 IU insulin 20 minutes later), we measured plasma levels of homocysteine, vitamin B12, and folic acid in 22...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(98)00527-4
更新日期：1999-04-01 00:00:00
