Abstract:
OBJECTIVE:To estimate whether the timing of bladder emptying affects focal myometrial contraction development and image adequacy. METHODS:Women at 14 0/7-32 0/7 weeks of gestation undergoing a transvaginal ultrasound examination from January 1, 2012, to September 1, 2012, were eligible for this blinded randomized controlled trial. Participants were randomly assigned to undergo transvaginal imaging immediately after urination (within 5 minutes) or to defer the imaging by at least 15 minutes. The primary outcome was focal myometrial contraction development as determined by two independent blinded reviews of the images. Secondary outcomes included image adequacy and the diagnosis of placenta previa. Relative risks (RRs) and 95% confidence intervals (CIs) were calculated using repeated-measures log binomial regression. RESULTS:Two hundred twenty-one women provided 335 randomized encounters for analysis. Women in the deferred scan group were 30% less likely to experience a focal myometrial contraction (28.1% compared with 40.5%, RR 0.70, 95% CI 0.52-0.93) and 41% less likely to have inadequate images (18.6% compared with 31.5%, RR 0.59, 95% CI 0.40-0.86). The two groups were equally likely to be diagnosed with placenta previa (P=.13). However, participants in the deferred scan group were 76% less likely to have images demonstrating a placenta previa and focal myometrial contraction (3.0% compared with 12.5%, RR 0.24, 95% CI 0.09-0.62) than participants in the immediate scan group. Eight women would need to defer imaging for 15 minutes from bladder voiding to prevent one focal myometrial contraction of the lower uterine segment or inadequate imaging. CONCLUSIONS:A brief interval (at least 15 minutes) between voiding and transvaginal cervical evaluation is associated with decreased risk for focal myometrial contractions and improved imaging. CLINICAL TRIAL REGISTRATION:ClinicalTrials.gov, www.clinicaltrials.gov, NCT01513395. LEVEL OF EVIDENCE:I.
journal_name
Obstet Gynecoljournal_title
Obstetrics and gynecologyauthors
Schnettler W,March M,Hacker MR,Modest AM,Rodriguez Ddoi
10.1097/AOG.0b013e3182860b8dsubject
Has Abstractpub_date
2013-04-01 00:00:00pages
798-804issue
4eissn
0029-7844issn
1873-233Xpii
00006250-201304000-00015journal_volume
121pub_type
杂志文章,随机对照试验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::Vaginal hysterectomy fulfills the evidence-based requirements as the preferred route of hysterectomy for benign gynecologic disease. Despite proven safety and effectiveness, the vaginal approach for hysterectomy has been and remains underused in surgical practice. Factors associated with underuse of vaginal hysterecto...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000000398
更新日期:2014-09-01 00:00:00
abstract::Fifty-eight infants of 3332 deliveries (1.7%) were found to be growth retarded (IGR) at birth. For purposes of analysis, the infants were divided into 2 groups according to gestational age at delivery: Group I infants were delivered between 38 and 43 weeks' gestation, and Group II infants were delivered between 28 and...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1976-08-01 00:00:00
abstract:OBJECTIVE:To describe the natural history and outcomes of a large cohort of expectantly managed angular pregnancies diagnosed in the first trimester by specific ultrasound criteria. METHODS:We conducted a prospective case series of women with prenatally diagnosed angular pregnancy at a single academic tertiary care ce...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000003595
更新日期:2020-01-01 00:00:00
abstract::Umbilical cord blood gases were measured as objective parameters of neonatal outcome in patients delivered by Silastic vacuum extractor and were compared with those values from patients delivered spontaneously, by forceps, or by sequential use of vacuum and forceps. The results demonstrated no clinically significant d...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1988-01-01 00:00:00
abstract:BACKGROUND:Uterine malignant mixed mesodermal tumor is a rare variant of uterine cancer. Data suggest that tamoxifen is involved in the pathogenesis. We report a case of a women in whom a malignant mixed mesodermal tumor was diagnosed while she was taking raloxifene, which is also a selective estrogen receptor modulato...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000160480.55365.a8
更新日期:2005-05-01 00:00:00
abstract:UNLABELLED:ōk--q----_xD-xD whether maternal antenatal therapy with vitamin K and phenobarbital prevents intracranial hemorrhage in premature newborns. METHODS:Women at high risk for spontaneous or indicated premature delivery before 34 weeks' gestation were randomly assigned to receive either placebo or vitamin K and ...
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)00091-5
更新日期:1995-07-01 00:00:00
abstract:OBJECTIVE:To describe obstetric health care providers' responses and counseling approaches to patients' disclosures of marijuana use during first prenatal visits. METHODS:We performed a content analysis of audio-recorded patient-health care provider first prenatal visits for obstetrics health care providers' responses...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000001343
更新日期:2016-04-01 00:00:00
abstract::Endometriotic ureteral obstruction is a serious event commonly diagnosed late and therefore associated with a major risk of hydronephrotic renal atrophy. The standard therapy is surgical. However, medical treatment has been reported using danazol, progestins, and estrogen-progestin combinations, although solid documen...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1990-03-01 00:00:00
abstract:OBJECTIVE:To study the localization of blood vessels within a tumor and the shape of the flow curve as a method of assessing ovarian neoplasms. METHODS:We studied 39 patients with malignant tumors and 63 patients with benign ovarian tumors by means of vaginal color Doppler ultrasound, noting the localization of blood ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0029-7844(94)00293-m
更新日期:1995-01-01 00:00:00
abstract::The current paradigm in obstetrics has shifted toward evidence-based medicine, and yet in clinical practice physicians continue to use interventions for which there exists no credible evidence. This article examines the U.S. Food and Drug Administration (FDA) status of home uterine activity monitoring (HUAM) and the p...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0b013e3181801d66
更新日期:2008-08-01 00:00:00
abstract::Infants delivered preterm often reflect accelerated maturation. The present study examines the occurrence of suboptimal intrauterine growth in infants delivered preterm by comparing their birth weights to the weights sonographically predicted for in utero fetuses at similar gestational ages but who ultimately deliver ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1985-03-01 00:00:00
abstract:OBJECTIVE:To determine the efficacy, safety, and duration of induced labor using an integrative approach (prostaglandin, amniotomy, oxytocin) and to depict these findings graphically. METHODS:Five hundred ninety-seven pregnancies requiring induction of labor between October 1993 and May 1995 were analyzed prospectivel...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/S0029-7844(97)00259-7
更新日期:1997-08-01 00:00:00
abstract::The balance between relaxin and prolactin has been suggested to be significant in the control of uterine activity during pregnancy. The current study was designed to determine the effect of rat prolactin on rat uterine horn segment contractility and its interaction with relaxin. Rat uterine segments mounted on a smoot...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1984-07-01 00:00:00
abstract::: The initial visit for screening and the provision of reproductive preventive health care services and guidance should take place between the ages of 13 years and 15 years. The initial reproductive health visit provides an excellent opportunity for the obstetrician-gynecologist to start a patient-physician relationsh...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000446826.46833.c0
更新日期:2014-05-01 00:00:00
abstract:OBJECTIVE:To investigate the genetic and obstetric implications of false positive Down syndrome serum screening results. METHODS:The study population comprised 162774 women underwent triple marker screening in the Ontario Maternal Serum Screening program between October 1995 and September 1998, with outcomes obtained ...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(03)00235-7
更新日期:2003-06-01 00:00:00
abstract:OBJECTIVE:To estimate the diagnostic accuracy of electronic fetal heart rate abnormalities in the identification of neonates with encephalopathy treated with whole-body hypothermia. METHODS:Between January 1, 2007, and July 1, 2013, there were 39 neonates born at two hospitals within our system treated with whole-body...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000000424
更新日期:2014-09-01 00:00:00
abstract:OBJECTIVE:To explore the shared experiences of miscarriage using a qualitative analysis of social media posts on Instagram. METHODS:We performed this qualitative study by collecting text, photos, hashtags, and emoji from 200 Instagram posts on five arbitrarily selected days in 2019. Key eligibility criteria included p...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/AOG.0000000000003621
更新日期:2020-01-01 00:00:00
abstract:OBJECTIVE:To identify independent risk factors for endometrial neoplasia in women with abnormal perimenopausal or postmenopausal bleeding and to use those factors to develop and test a predictive model. METHODS:We conducted a case-control study of women with abnormal perimenopausal or postmenopausal bleeding who had e...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0029-7844(98)00469-4
更新日期:1999-04-01 00:00:00
abstract::Periodic assessments offer an excellent opportunity for obstetricians and gynecologists to provide preventive screening, evaluation, and counseling. The American College of Obstetricians and Gynecologists' Committee on Gynecologic Practice recommends routine assessments in primary and preventive care for women based o...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,评审
doi:10.1097/AOG.0b013e318219226e
更新日期:2011-04-01 00:00:00
abstract:BACKGROUND:Reptile- and amphibian-associated salmonellosis poses significant risk to infants and young children. The Centers for Disease Control and Prevention has advised that reptiles and amphibians should not be kept in households with children younger than 5 years old. CASE:We report a 5-day-old newborn with Salmo...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:10.1097/01.AOG.0000187950.37065.87
更新日期:2006-02-01 00:00:00
abstract::This report describes an innovative use of videography in teaching retropubic space anatomy and surgery. After the standard abdominal incision has been made, the second surgical assistant places a gynecologic laparoscope, fitted with an endoscopic camera, into the retropubic space and guides the laparoscope documentin...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1991-04-01 00:00:00
abstract:OBJECTIVE:To examine the effectiveness of lidocaine spray compared with conventional lidocaine submucosal injection during a loop electrosurgical excision procedure (LEEP). METHODS:Women undergoing LEEP for any degrees of cervical intraepithelial neoplasia were invited to participate. The participants were randomly as...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,随机对照试验
doi:10.1097/AOG.0b013e31829d888e
更新日期:2013-09-01 00:00:00
abstract:OBJECTIVE:To compare outpatient to inpatient management of acute pyelonephritis in pregnancy beyond 24 weeks' gestation. METHODS:Ninety-two gravidas past 24 weeks' gestation, randomized to outpatient or inpatient therapy, received two 1-g doses of intramuscular ceftriaxone at 24-hour intervals while hospitalized, then...
journal_title:Obstetrics and gynecology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
doi:10.1016/s0029-7844(99)00386-5
更新日期:1999-11-01 00:00:00
abstract::Minor components of adult hemoglobin (A1a,b, and c) are known to increase in the presence of sustained elevations of maternal blood glucose. This study demonstrates the correlation between glycosylated hemoglobin components and the usual shorter term indices of diabetic control. In addition, a correlation was noted be...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1980-10-01 00:00:00
abstract:OBJECTIVE:To evaluate lactogenesis after early postpartum insertion of the etonogestrel contraceptive implant. METHODS:Healthy peripartum women with healthy, term newborns who desired the etonogestrel implant for contraception were randomly assigned to early (1-3 days) or standard (4-8 weeks) postpartum insertion. The...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,随机对照试验
doi:10.1097/AOG.0b013e3182165ee8
更新日期:2011-05-01 00:00:00
abstract:OBJECTIVE:To investigate neonatal morbidity and maternal complication rates with delivery body mass index (BMI) 60 or greater. METHODS:This retrospective, multicenter cohort study included singleton pregnancies between 23 and 42 weeks of gestation from January 2005 to April 2016. Women with BMI 60 or greater were comp...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1097/AOG.0000000000002316
更新日期:2017-11-01 00:00:00
abstract::Combination chemotherapy has dramatically improved the results of treatment for embryonal rhabdomyosarcoma of the vagina in children, but little attention has been directed toward vaginal sarcomas in adults. This report of 17 cases of primary sarcoma of the adult vagina includes ten leiomyosarcomas, four mixed mesoder...
journal_title:Obstetrics and gynecology
pub_type: 杂志文章
doi:
更新日期:1985-05-01 00:00:00
abstract::Given that practice variation exists in the frequency and performance of ultrasound and magnetic resonance imaging (MRI) in pregnancy, the Eunice Kennedy Shriver National Institute of Child Health and Human Development hosted a workshop to address indications for ultrasound and MRI in pregnancy, to discuss when and ho...
journal_title:Obstetrics and gynecology
pub_type:
doi:10.1097/AOG.0000000000000245
更新日期:2014-05-01 00:00:00