Abstract：
:Women who develop preeclampsia during pregnancy excrete less calcium than healthy pregnant women. Whether this reduction in calcium excretion precedes or follows hypertension is unknown. We prospectively measured urinary calcium excretion in 103 consecutive nulliparous women at risk for preeclampsia and presenting for prenatal care before 24 weeks' gestation. Serial 24-hour urine specimens were obtained at 10-24 weeks, 25-32 weeks, and 33 weeks to term. After delivery, the charts were reviewed for the presence of preeclampsia and gestational hypertension. At the first collection, patients who later developed preeclampsia excreted less urinary calcium (169 +/- 30 mg/24 hours; mean +/- standard error of the mean) than those who remained normotensive (298 +/- 15 mg/24 hours) (P less than .05); this reduction persisted throughout gestation. Using a receiver operator curve, we calculated a predictive threshold calcium value for hypertension of 195 mg/24 hours. The difference in the incidence of preeclampsia between pregnant women with calcium excretion values at or below 195 mg/24 hours (87%, 95% confidence interval 52-98%) and those with values above that level (2%, confidence interval 0.3-8%) was highly significant (Fisher exact test, P less than .0001). The 95% lower limit of relative risk for preeclampsia in patients with a calcium excretion equal to or below 195 mg/24 hours in the first collection was 9.4. These observations suggest a pathophysiologic role for altered urinary calcium excretion in women with preeclampsia that may contribute to the early identification of patients at risk for this disease.
journal_name
Obstet Gynecoljournal_title
Obstetrics and gynecologyauthors
Sanchez-Ramos L,Jones DC,Cullen MTsubject
Has Abstractpub_date
1991-05-01 00:00:00pages
685-8issue
5eissn
0029-7844issn
1873-233Xjournal_volume
77pub_type
杂志文章abstract：OBJECTIVE:To evaluate the efficacy of 3 common intrauterine resuscitation techniques used during labor. METHODS:Intrauterine resuscitation techniques were prospectively evaluated in healthy women during labor. Forty-two women were randomized to either a 500-mL or 1,000-mL intravenous (IV) fluid bolus over 20 minutes. ...
journal_title：Obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1097/01.AOG.0000164474.03350.7c
更新日期：2005-06-01 00:00:00
abstract：OBJECTIVE:To examine the relationship between an obstetrician's delivery volume and a patient's risk for cesarean delivery. METHODS:This retrospective cohort study examined patient-level and obstetrician-level data between 2000 and 2012 at a large academic hospital. All laboring patients who delivered viable, liveborn...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0000000000000473
更新日期：2014-10-01 00:00:00
abstract：:Tubal pregnancy specimens from a patient with undetectable serum beta-hCG levels and a control case with a low beta-hCG titer by radioimmunoassay were analyzed using peroxidase-antiperoxidase immunocytochemical localization of placental proteins. The results indicated that deficient production of beta-hCG by ectopic t...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1988-06-01 00:00:00
abstract：:A single-transducer mechanical sector scanner was used to examine the first-trimester fetus. Fifty-six examinations of 31 patients demonstrated an orderly developmental progression of fetal activity beginning with beating of the fetal heart (7 weeks), progressing to fetal trunk movement (8 weeks), and culminating in i...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1980-02-01 00:00:00
abstract：BACKGROUND:Endometrial stromal nodule is a rare subtype of endometrial stromal tumor. Although such nodules are benign, hysterectomy has been considered the treatment of choice, because evaluation of the margin is required for diagnosis. The similarity between low-grade stromal sarcoma and stromal nodule suggests that ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(98)00332-9
更新日期：1999-05-01 00:00:00
abstract：OBJECTIVE:To compare the patterns of perioperative blood transfusion in patients undergoing radical hysterectomy in time periods before and after the discovery of transfusion-related human immunodeficiency virus (HIV) infection. METHODS:We reviewed the medical records of all patients who underwent radical hysterectomy...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1994-12-01 00:00:00
abstract：BACKGROUND:In nondiabetic women, pregnancy alone rarely causes clinical hypoglycemia. Non-islet cell tumors have recently been shown to be associated with the production of insulin-like growth factor II (IGF-II) and a paraneoplastic syndrome resulting in hypoglycemia. A case report and review of pathophysiologic mechan...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0029-7844(94)00313-3
更新日期：1995-05-01 00:00:00
abstract：OBJECTIVE:To document the initial clinical diagnoses, determine the prevalence of urinary symptoms, and test for intravesical potassium sensitivity in gynecologic patients with chronic pelvic pain. METHODS:Gynecologists at three United States medical centers administered the Potassium Sensitivity Test to consecutive u...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0029-7844(01)01366-7
更新日期：2001-07-01 00:00:00
abstract：:The CO2 laser has become a valuable tool for the treatment of lower genital tract neoplasia. The records of 52 women who underwent CO2 laser cervical conization were analyzed retrospectively to evaluate the effect of tissue thermal damage on histopathologic interpretation. Lesion evaluability, defined by the ability t...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1992-05-01 00:00:00
abstract：OBJECTIVE:To compare tubal anastomosis by robotic system compared with outpatient minilaparotomy. METHODS:In this retrospective case-control study, women were identified by current procedural terminology code for tubal anastomosis. We included all cases of tubal anastomosis for reversal of a prior tubal ligation by ei...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/01.AOG.0000264591.43544.0f
更新日期：2007-06-01 00:00:00
abstract：OBJECTIVE:To compare the clinicopathologic prognosticators and survival of Asians and whites with corpus cancer. METHODS:Demographic, clinicopathologic, and survival data were obtained from the 1992-2001 Surveillance, Epidemiology, and End Results Program. Statistical analyses were performed by Kaplan-Meier methods an...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/01.AOG.0000195062.75199.7d
更新日期：2006-02-01 00:00:00
abstract：:Twenty-one subjects with pregnancy-induced hypertension were investigated with regard to the relationship between maternal hemodynamics and fetal growth. Five of the infants were small for gestational age (SGA) (less than tenth percentile) and 16 were appropriate for gestational age (AGA) (greater than tenth percentil...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1988-02-01 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 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：:A new rapid method of presurgical cleansing of the hands has been evaluated in a clinical setting. The effectiveness of a 90 second jet wash has been compared with a standard 10-minute presurgical scrub. Bacteriologic cultures were obtained from the fingertips of interns, residents, and staff of the Department of Obst...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1978-01-01 00:00:00
abstract：:A follow-up study of more than 65,000 healthy women aged 15 to 44 was conducted to assess the association between oral contraceptive use and thromboembolism, stroke, or nonfatal myocardial infarction from 1980 through 1982 at Group Health Cooperative of Puget Sound. A positive association existed between current oral ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1985-07-01 00:00:00
abstract：:The hemodynamic effects of intravenously infused dihydralazine (incremental doses up to 125 micrograms per minute during 60 minutes) were studied in ten women with acute or superimposed severe preeclampsia. The intervillous and umbilical vein blood flow were measured before and during dihydralazine infusion with 133Xe...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1985-01-01 00:00:00
abstract：:Studies of the cause of amenorrhea in a patient with congenital adrenal hyperplasia (CAH) whose androgen levels were easily controlled suggested that inhibition of menses in CAH is more closely related to overproduction of progestins than to overproduction of androgens. Supporting this concept was the observation in a...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1980-08-01 00:00:00
abstract：OBJECTIVE:To evaluate an office-based test as a screening method for intrinsic sphincter deficiency. METHODS:One hundred seventy-three women with urinary incontinence were evaluated prospectively by complete urodynamic studies. After catheterization, the pediatric Foley catheter test was performed on an empty bladder ...
journal_title：Obstetrics and gynecology
pub_type： 临床试验,杂志文章
doi：10.1016/s0029-7844(01)01344-8
更新日期：2001-06-01 00:00:00
abstract：OBJECTIVE:To study the clinical course and perinatal outcome of twin pregnancies discordant for anencephaly, without selective termination. METHODS:We conducted a descriptive retrospective study of 14 cases of dichorionic twin pregnancies discordant for anencephaly, which were managed expectantly in five Israeli perin...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0029-7844(95)00309-F
更新日期：1995-12-01 00:00:00
abstract：:Sixty percent of American Indian and Alaska Native women live in metropolitan areas. Most are not eligible for health care provided by the federal Indian Health Service (IHS). The IHS partly funds 34 Urban Indian Health Organizations, which vary in size and services. Some are small informational and referral sites tha...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/01.AOG.0000410162.34363.0b
更新日期：2012-01-01 00:00:00
abstract：OBJECTIVE:To examine the concordance between self-collected and clinician-collected samples for human papillomavirus (HPV) DNA. METHODS:Sexually active adolescent and young adult women aged 14-21 years (N = 101) were enrolled in a prospective cohort study of HPV testing. Participants self-collected vaginal samples for...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/01.AOG.0000124569.61462.8d
更新日期：2004-05-01 00:00:00
abstract：OBJECTIVE:Elective repeat cesarean delivery at 37 or 38 weeks compared with 39 completed weeks of gestation is associated with adverse neonatal outcomes. We assessed whether delivery before 39 weeks is justifiable on the basis of decreased adverse maternal outcomes. METHODS:We conducted a cohort study of women with li...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0b013e3182078115
更新日期：2011-02-01 00:00:00
abstract：BACKGROUND:Selective bilateral uterine artery embolization has been used since the 1970s for the conservative treatment of postpartum hemorrhage. The fertility rate after the embolization procedure is yet to be determined. CASE:A 30-year-old woman presented with placental abruption and subsequently delivered preterm a...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/s0029-7844(03)00230-8
更新日期：2003-09-01 00:00:00
abstract：:The reported frequency of alcohol abuse during pregnancy was studied in a large urban public hospital in Dallas, Texas. During 1977-1980, 5602 pregnant women were surveyed and 0.7% (95% confidence interval 0.6-0.8%) reported abusing alcohol during pregnancy. In 1987, 1.4% (95% confidence interval 1.3-1.5%) of 1032 pre...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1989-10-01 00:00:00
abstract：:Published reports disagree on the risks of intraamniotic prostaglandin F2alpha (PGF2alpha) for midtrimester abortion. To evaluate the safety and efficacy of intraamniotic PGF2alpha, we compared 1241 PGF2alpha and 10,013 saline abortions performed during the 13th to the 24th menstrual week. The results were reported in...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1977-05-01 00:00:00
abstract：OBJECTIVE:To describe recent syphilis trends among pregnant women and to evaluate the prevalence of reported high-risk behaviors in this population. METHODS:We analyzed U.S. national case report data for 2012-2016 to assess trends among pregnant women with all stages of syphilis. Risk behavior data collected through c...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0000000000003000
更新日期：2019-01-01 00:00:00
abstract：OBJECTIVE:To investigate factors associated with differential state maternal mortality ratios and to quantitate the contribution of various demographic factors to such variation. METHODS:In a population-level analysis study, we analyzed data from the Centers for Disease Control and Prevention National Center for Healt...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章,收录出版
doi：10.1097/AOG.0000000000001628
更新日期：2016-10-01 00:00:00
abstract：OBJECTIVE:To examine the association of body fat distribution with risk of endometriosis in an effort to determine whether a specific somatotype is related to the disease. METHODS:We conducted a case-control study of 88 laparoscopically confirmed cases of endometriosis, identified in a specialty gynecologic practice i...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：
更新日期：1993-10-01 00:00:00
abstract：OBJECTIVE:To explore the pregnancy and childbirth experiences and preferences of women with a history of sexual trauma in order to identify trauma-informed care practices that health care providers may use to improve obstetric care. METHODS:We conducted a qualitative study consisting of semistructured interviews with ...
journal_title：Obstetrics and gynecology
pub_type： 杂志文章
doi：10.1097/AOG.0000000000002956
更新日期：2018-12-01 00:00:00
