Abstract:
OBJECTIVE:To determine if bacteria are capable of producing phosphatidylglycerol in amniotic fluid (AF) and the number of colony forming units (CFU) of bacteria necessary to produce this result. METHODS:Eleven species of bacteria and one species of yeast, common to the female genital tract and implicated in chorioamnionitis, were selected. Amniotic fluid was collected from 21 women and inoculated with 10(8) CFU/mL of each isolate. Aliquots of AF were tested at 0, 4, 12, and 24 hours for colony counts and the presence of phosphatidylglycerol by thin-layer chromatography. RESULTS:The mean gestational age (+/- standard deviation) of the 21 study patients was 33 weeks and 1 day (+/- 4 weeks). Among the 12 species studied, Escherichia coli produced phosphatidylglycerol, at a concentration of 1.75 x 10(8) CFU/mL, beginning 12 hours after incubation. CONCLUSION:Escherichia coli is capable of producing phosphatidylglycerol in AF in vitro and is present in the vagina in 24% of normal pregnant patients. Our findings question the validity of using vaginal pool AF specimens for phosphatidylglycerol determination. Therefore, we recommend that patients presenting with preterm premature rupture of membranes be evaluated by amniocentesis to determine fetal lung maturity with phosphatidylglycerol and the lecithin-sphingomyelin ratio.
journal_name
Obstet Gynecoljournal_title
Obstetrics and gynecologyauthors
Lambers DS,Brady K,Leist PA,Setser C,Helmchen Rdoi
10.1016/0029-7844(95)00032-msubject
Has Abstractpub_date
1995-05-01 00:00:00pages
651-5issue
5 Pt 1eissn
0029-7844issn
1873-233Xjournal_volume
85pub_type
杂志文章abstract::The authors determined the prevalence of certain major congenital disorders among live-born infants of 6509 mothers in a prepaid health plan for the 30-month period of January 1, 1980 through June 30, 1982 who used a wide variety of drugs during the first trimester of pregnancy. The results were similar to those obtai...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1985-04-01 00:00:00
abstract:OBJECTIVE:To evaluate the outcome of intrauterine growth restriction (IUGR) infants with abnormal pulsatility index of the umbilical artery according to the neonatal birth weight/gestational age standards and the intrauterine growth charts. METHODS:We analyzed 53 pregnancies with severe IUGR classified as group 2 (22 ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e31818bdc7e
更新日期:2008-12-01 00:00:00
abstract::The results of 1000 consecutive unselected cases of induction of labor for medical or obstetric reasons using prostaglandin E2 suppositories are presented. The overall rate of failed induction resulting in a cesarean section in those patients with an unfavorable cervix has fallen from 42 to 2.5%. Only 27% of the entir...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1981-11-01 00:00:00
abstract:OBJECTIVE:Singleton neonates born after in vitro fertilization (IVF) are at increased risk for low birth weight, preterm delivery, or both. We sought to assess whether the alteration of the peri-implantation maternal environment resulting from ovarian stimulation may contribute to increased risk of low birth weight in ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e31822be65f
更新日期:2011-10-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the frequency, distribution, and most likely etiology of hematologic and weight discordance in pathologically proven monochorionic twins, and to use this information to reevaluate the neonatally derived definition of the twin-twin transfusion syndrome. METHODS:We re...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1992-08-01 00:00:00
abstract::Cerebral hemodynamics were studied in eight nonpregnant women and 24 women in late pregnancy by internal carotid artery velocimetry with a 3.5-MHz continuous-wave Doppler system. Criteria for supine hypotensive syndrome were a mean blood pressure decrease of 15 mmHg and a 2-minute sustained increase in pulse of 20 bea...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1992-01-01 00:00:00
abstract:OBJECTIVE:To describe the incidence of pelvic floor dysfunction in transgender women undergoing gender-affirming vaginoplasty and outcomes in a program providing pelvic floor physical therapy (PT). METHODS:We conducted a retrospective, single-institution study on vaginoplasty patients between May 1, 2016, and February...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000003236
更新日期:2019-05-01 00:00:00
abstract:OBJECTIVE:The aim of this study was to estimate the probability of spontaneous delivery at 34 weeks or less according to cervical assessment by transvaginal scan associated with previous obstetric history. METHODS:Ultrasound transvaginal cervical length and presence of funneling were evaluated in 1,958 singleton pregn...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000154157.22500.1d
更新日期:2005-03-01 00:00:00
abstract::A 21-year-old white woman presented with virilization, hirsutism, and acne of 1.5 years' duration. Endocrine testing demonstrated complete suppression of serum testosterone, from 5.3 to 0.6 ng/mL, and serum androstenedione, from 4.7 to 1.7 ng/mL, after oral administration of 50 micrograms of mestranol and 1 mg of nore...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,评审
doi:
更新日期:1989-05-01 00:00:00
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 perf...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1097/AOG.0b013e318236fbd1
更新日期:2011-12-01 00:00:00
abstract:BACKGROUND:Intravascular fetal transfusion is an important therapeutic advance but is associated with several complications. Regression of an umbilical artery associated with transfusion is rare. CASE:A case of red blood cell alloimmunization managed by serial transfusions was complicated by functional loss of an umbi...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(98)00502-x
更新日期:1999-05-01 00:00:00
abstract::The inability to make a definitive diagnosis in the fetus with a sonographically identified abnormality often results in parental and physician uncertainty. An antenatal chromosome evaluation could resolve this uncertainty. Forty-one fetuses with an abnormal ultrasound examination were tested for karyotypic abnormalit...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1987-01-01 00:00:00
abstract:OBJECTIVE:To assess the relationship of preinsertion vaginal ultrasound assessment and menstrual and gynecologic history as predictors of difficult or painful intrauterine device insertion in nulligravid women. METHODS:Nulligravid women seeking contraception were invited to participate in this nonrandomized study and ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000000362
更新日期:2014-08-01 00:00:00
abstract:OBJECTIVE:To evaluate the accuracy of the diagnosis of presumed ectopic pregnancy. METHODS:This was a retrospective cohort analysis at a tertiary care medical center. The patient population was composed of 1) clinically stable pregnant women with human chorionic gonadotropin (hCG) above 2000 mIU/mL and no evidence of ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(02)02142-7
更新日期:2002-09-01 00:00:00
abstract:BACKGROUND:Abdominal pregnancies are rare types of ectopic pregnancies with high rates of maternal mortality and morbidity when encountered anywhere in the world. Combining such high-risk pregnancy with the limitations found in a low-resource setting can lead to increased complications, which can be more difficult to m...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000000706
更新日期:2015-05-01 00:00:00
abstract:OBJECTIVE:To determine if patient reports of urinary incontinence symptoms can predict quality of life as measured by the short forms of the Incontinence Impact Questionnaire and the Urogenital Distress Inventory, two standardized, disease-specific instruments. METHODS:Telephone surveys were conducted of 384 community...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(97)00627-3
更新日期:1998-02-01 00:00:00
abstract::Thirty-four patients using intrauterine contraceptive devices and experiencing excessive menstrual bleeding (more than 80 ml average loss for 2 cycles) were treated with the prostaglandin synthetase inhibitor naproxen. The trial was conducted according to a double-blind placebo-controlled crossover design. Each patien...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章
doi:
更新日期:1981-01-01 00:00:00
abstract:OBJECTIVE:To examine cigarette smoking as a risk factor for different types of epithelial ovarian cancer. METHODS:We used data from the Cancer and Steroid Hormone Study, a multicenter, population-based, case control investigation. Cases were 447 women aged 20-54 years with diagnoses of epithelial ovarian cancer. Contr...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1016/s0029-7844(99)00531-1
更新日期:2000-02-01 00:00:00
abstract:BACKGROUND:Hyperemesis gravidarum may lead to hypovolemia and substantial electrolyte abnormalities, including hypokalemia. Hypokalemia, when profound, may result in rare consequences, such as rhabdomyolysis. CASE:A 20-year-old woman with hyperemesis gravidarum at 19 weeks of gestation presented with extreme leg weakn...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000001418
更新日期:2016-07-01 00:00:00
abstract:OBJECTIVE:To evaluate the counterregulatory responses to insulin-induced hypoglycemia in healthy women and in women with insulin-dependent diabetes during pregnancy and in the nonpregnant state. METHODS:Hypoglycemia was induced using the hypoglycemic clamp technique in 17 women with insulin-dependent diabetes and in t...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0029-7844(95)00495-5
更新日期:1996-04-01 00:00:00
abstract::Collagen is a widespread body constituent that is affected by estrogen status in women. Its decrease after menopause can be prevented and/or restored by estrogen treatment. We explored the effect of four different hormonal replacement regimens on total skin collagen content by measuring hydroxyproline in skin biopsy s...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1987-07-01 00:00:00
abstract:OBJECTIVE:To evaluate the effectiveness and safety of an intrauterine vacuum-induced hemorrhage-control device for postpartum hemorrhage treatment. METHODS:A multicenter, prospective, single-arm treatment study of a novel intrauterine device that uses low-level vacuum to induce uterine myometrial contraction to achiev...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,多中心研究
doi:10.1097/AOG.0000000000004138
更新日期:2020-11-01 00:00:00
abstract::Human papillomavirus (HPV) is associated with cervical intraepithelial neoplasia (CIN) and carcinomas. The present study involved women who had an abnormal Papanicolaou smear and whose cervix contained acetowhite area(s) that lacked the histologic features of CIN. Sequences homologous to HPV DNA, determined by Souther...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1990-06-01 00:00:00
abstract:BACKGROUND:To demonstrate that intravenous (IV) iron therapy rapidly can secure the physiologic correction of severe nonhemorrhagic anemia more safely than blood component therapy and recombinant erythropoietin treatment. CASE:An 18-year-old woman with beta-thalassemia in her 33rd week of gestation had a hemoglobin le...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(97)00261-5
更新日期:1997-10-01 00:00:00
abstract:OBJECTIVE:To determine the prevalence of the metabolic syndrome postpartum in women with a history of pregnancy complicated by early-onset vascular disorders compared with women with late-onset disorders. METHODS:In this retrospective cohort study 849 women with a history of pregnancy complicated by vascular disorders...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e3181b7b242
更新日期:2009-11-01 00:00:00
abstract:OBJECTIVE:To systematically review studies examining the relationship between hyperemesis gravidarum and Helicobacter pylori (H pylori) infection. DATA SOURCES:A 1966 to January 2007 search using MEDLINE/PubMed, EMBASE, and Web of Science included MeSH terms: "Helicobacter pylori," "Helicobacter infections," "hypereme...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1097/01.AOG.0000278571.93861.26
更新日期:2007-09-01 00:00:00
abstract:OBJECTIVE:To evaluate the efficacy of device-guided slow-paced respiration for reducing the frequency and severity of menopausal hot flushes. METHODS:Perimenopausal or postmenopausal women reporting four or more hot flushes per day were recruited into a parallel-group, randomized trial of slow-paced respiration using ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,随机对照试验
doi:10.1097/AOG.0000000000000821
更新日期:2015-05-01 00:00:00
abstract::For more than 30 years the collaboration between obstetrician-gynecologists and certified nurse-midwives at San Francisco General Hospital has led to the provision of high-quality care to women and families. This enduring partnership has been sustained by shared goals and values, most notably a commitment to excellenc...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e3182297d2d
更新日期:2011-09-01 00:00:00
abstract:OBJECTIVE:To identify risk factors for fever in labor. METHODS:A retrospective case-control study was conducted. Maternal sublingual temperature was measured every 2-4 hours during labor in 3109 of 3860 consecutive term parturients presenting from September 1992 through December 1993. Women who had fever (at least one...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0029-7844(95)00254-O
更新日期:1995-11-01 00:00:00
abstract::A modified CEA-Roche kit was used to determine the pretreatment value of carcinoembryonic antigen (CEA) in patients with intraepithelial neoplasia and invasive squamous cell carcinoma of the cervix. A positive correlation between tumor volume and CEA levels was found in patients with invasive disease, and patients wit...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/00006250-197805000-00004
更新日期:1978-05-01 00:00:00