Abstract：
OBJECTIVE:We conducted a study to determine whether the pH and base excess of umbilical artery blood samples are significantly different when taken from a double-clamped segment of umbilical cord as compared with a nonisolated segment of umbilical cord. STUDY DESIGN:A prospective study with 43 singleton pregnancies was conducted. Matched pair samples of umbilical arterial blood were compared from double-clamped and nonisolated segments. The means for pH and base excess were compared and a paired t test was used to determine significance. RESULT:The means for pH and base excess were not significantly different (P = .70) between the 2 groups. CONCLUSION:Double clamping the umbilical cord before obtaining an umbilical artery sample is not necessary for accurate blood gas results.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Leung WI,Lyndon CAdoi
10.1016/j.ajog.2006.10.885subject
Has Abstractpub_date
2007-05-01 00:00:00pages
e52-4issue
5eissn
0002-9378issn
1097-6868pii
S0002-9378(06)02200-9journal_volume
196pub_type
杂志文章abstract：:Three cases of persistent urinary incontinence from unrecognized small vesicovaginal fistula after abdominal hysterectomy for benign gynecologic disease are presented. Visualization of urine in the posterior fornix was suggestive; diagnosis was confirmed by methylene blue test and cystoscopy. Two patients had undergon...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(88)90129-9
更新日期：1988-02-01 00:00:00
abstract：:A 31-year-old woman with a positive pregnancy test and a transvaginal ultrasound scan result that was suggestive of a right tubal ectopic pregnancy underwent a laparoscopy, which showed bilateral hematosalpinx. In the presence of active bleeding and deteriorating hemodynamic status of the patient, a minilaparotomy was...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/s0002-9378(03)00206-0
更新日期：2003-09-01 00:00:00
abstract：OBJECTIVE:The objective was to evaluate whether the rate of neonatal group B streptococcal infection could be reduced by screening for group B streptococci during the third trimester of pregnancy. STUDY DESIGN:Two periods in which different screening and treatment protocols were applied were compared. In period A all ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(98)70063-8
更新日期：1998-09-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to compare 3 different approaches for increasing clients' understanding of contraceptive effectiveness. STUDY DESIGN:We randomized 900 reproductive-age women in India and Jamaica to 1 of 3 charts presenting pregnancy risk. RESULTS:The most important reason for choosing a contr...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajog.2005.12.053
更新日期：2006-07-01 00:00:00
abstract：:Attempts were made to produce inferior vena cava (IVC) compression in 14 pregnant and 12 nonpregnant bitches. Ligation of the iliac veins, the IVC below the renal veins, or the left renal vein separately produced minimal hemodynamic disturbances. Only ligation of the two renal veins or of the IVC above the renal veins...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(78)90365-4
更新日期：1978-01-15 00:00:00
abstract：:Fifty-seven prenatal patients with no known exposure to the element mercury, or any of its compounds, were observed for change in whole blood total mercury concentration from the initial prenatal clinic examination through delivery and postpartum hospitalization. On hospital admission for labor and delivery, whole blo...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(82)90087-4
更新日期：1982-06-15 00:00:00
abstract：OBJECTIVE:The purpose of this study was to evaluate the association between preeclampsia and 3 relatively common mutations that are important in the development of vascular disease and thrombosis; these are similar to conditions observed in pregnancies complicated by preeclampsia. STUDY DESIGN:Deoxyribonucleic acid wa...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.110411
更新日期：2001-05-01 00:00:00
abstract：OBJECTIVE:Our purpose was to investigate the efficacy of postsurgical treatment with nafarelin in women with advanced endometriosis. STUDY DESIGN:Eligible for trial were women < or = 38 years old with unexplained infertility with or without chronic pelvic pain and stage III or IV endometriosis according to the America...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/0002-9378(94)90133-3
更新日期：1994-11-01 00:00:00
abstract：OBJECTIVES:It has recently been suggested that oxygen free radicals are involved in the high incidence of fetal dysmorphogenesis that is associated with diabetic pregnancies. The purpose of the current investigation was to study the effect of copper zinc superoxide dismutase, a free radical scavenging enzyme, on the pr...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(95)91323-8
更新日期：1995-10-01 00:00:00
abstract：:The pathogenesis of endometriosis is controversial. The two principal histogenetic theories are (1) metastases of endometrial tissues to an ectopic location (metastatic theory) and (2) metaplastic development of endometrial tissue at the ectopic site (metaplastic theory). Studies on the development of the coelomic cav...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/0002-9378(91)90255-p
更新日期：1991-07-01 00:00:00
abstract：OBJECTIVE:Our purpose was to compare three techniques in their ability to decrease anxiety induced by the pelvic examination among children of different races. STUDY DESIGN:Eighty-nine subjects between 3 and 8 years old of white, African-American, and Hispanic race or ethnicity were randomly assigned to one of three d...
journal_title：American journal of obstetrics and gynecology
pub_type： 临床试验,杂志文章,随机对照试验
doi：10.1016/s0002-9378(98)70341-2
更新日期：1998-06-01 00:00:00
abstract：OBJECTIVE:Our objective was to determine any associations among midtrimester cervical fluid sialidase activity, bacterial vaginosis, and subsequent spontaneous preterm birth. STUDY DESIGN:In this nested case-control study all patients (n = 126) with spontaneous preterm birth at <35 weeks' gestation and selected contro...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(99)70609-5
更新日期：1999-05-01 00:00:00
abstract：OBJECTIVE:The objective of the study was to determine whether transversus abdominis plane (TAP) block reduces postoperative pain when compared with trocar site infiltration of bupivacaine in gynecological laparoscopy. STUDY DESIGN:This was a prospective, randomized, double-blinded clinical trial using patients as thei...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.ajog.2014.07.049
更新日期：2015-02-01 00:00:00
abstract：:Single-agent chemotherapy of advanced and recurrent squamous carcinoma of the female genital tract has been largely ineffective. Combination-drug therapy which has augmented the efficacy of chemotherapy in numerous solid and nonsolid human tumors is usually attended by a degree of toxicity that has discouraged its use...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(75)90500-1
更新日期：1975-12-01 00:00:00
abstract：:Comparisons of two methods of sterilization on 250 patients at Victoria General Hospital, Nova Scotia, Canada between January 1968 and December 1970. There were 85 vaginal procedures and 165 abdominal procedures; 50 cases were lost to follow-up. Average age of the women was 35 years, average parity was 3.5 children....
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(73)90397-9
更新日期：1973-02-15 00:00:00
abstract：:Women's health nurses and nurse practitioners have a unique opportunity to provide high-quality primary and preventive care and play a critical role in coordinating and delivering effective contraceptive methods. The strategies and techniques that they routinely employ during counseling and education can help improve ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,评审
doi：10.1016/j.ajog.2011.07.001
更新日期：2011-10-01 00:00:00
abstract：:Seventy cases of ectopic pregnancy associated with an IUD comprised 10% of all ectopics in a 9 year period. This increased to 15% in the last 19 months as more IUD's were in use. In two thirds of the ectopics the IUD had been in situ more than 1 year. Unusual bleeding and cramping attributed to the IUD obscured the di...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(76)90843-7
更新日期：1976-07-15 00:00:00
abstract：:This paper calls attention to rapidly increased use of vertical uterine incision and future consequences: impaired uterus, uterine rupture, and iatrogenic premature delivery. In addition, by making a vertical uterine incision we are not gaining much in the size of uterine entrance since the size of the vertical uterin...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(85)90541-1
更新日期：1985-08-15 00:00:00
abstract：OBJECTIVE:The purpose of this study was to develop a model for preeclampsia based on maternal demographic characteristics and medical history. STUDY DESIGN:This was a screening study of 120,492 singleton pregnancies at 11-13 weeks' gestation, including 2704 pregnancies (2.2%) that experienced preeclampsia. A survival-...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2015.02.018
更新日期：2015-07-01 00:00:00
abstract：OBJECTIVES:This study was undertaken to examine the national and regional rates of operative delivery among almost one quarter million births in a single year in the nation's largest healthcare delivery system, using variation as an arbiter of the quality of decision making. STUDY DESIGN:We compared the variation in r...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2007.01.024
更新日期：2007-06-01 00:00:00
abstract：OBJECTIVE:Our purpose was to quantitatively assess the effects of oxytocin on membrane properties in the pregnant human myometrium. STUDY DESIGN:Specimens were obtained from the lower uterine segment during cesarean section at term. Electrical activity was recorded from individual cells by a conventional microelectrod...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(97)70465-4
更新日期：1997-07-01 00:00:00
abstract：OBJECTIVE:Our objective was to determine whether the use of preoperative antibiotics prevents serious infections associated with total abdominal hysterectomy. STUDY DESIGN:We identified 25 randomized controlled trials of antibiotic prophylaxis that used rigorous protocols. We performed meta-analysis and cumulative met...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章,meta分析
doi：10.1016/0002-9378(93)90266-l
更新日期：1993-11-01 00:00:00
abstract：:Thirteen healthy postmenopausal volunteers were studied under basal conditions and at intervals (days 1, 5, 10, and 30) after intravaginal placement of a polysiloxane ring impregnated with 400 mg of estradiol. Mean serum estradiol concentrations rose 26-fold with a twofold increase in serum estrone concentrations. Ser...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(86)90821-5
更新日期：1986-08-01 00:00:00
abstract：OBJECTIVE:To evaluate combined analysis with amniotic fluid index (AFI) and estimated fetal weight (EFW) for prediction of severe macrosomia at birth. STUDY DESIGN:In this retrospective case-control study, 50 term severe macrosomic newborns (birthweight [BW] > or = 97th percentile) were included in the study group and...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2006.11.019
更新日期：2007-04-01 00:00:00
abstract：:Multifetal gestation is associated with increased frequency of maternal complications and higher perinatal morbidity and mortality. The need for contemporary data on the outcome of multifetal gestations is further underscored when selective reduction is considered. The present study details the obstetric management, n...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(90)90407-x
更新日期：1990-02-01 00:00:00
abstract：OBJECTIVE:We sought to characterize the labor of women attempting trial of labor after cesarean (TOLAC) who experience uterine rupture. STUDY DESIGN:We conducted a secondary analysis of a nested case-control study of women attempting TOLAC. Women experiencing uterine rupture (cases) were compared to 2 reference groups...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2012.06.028
更新日期：2012-09-01 00:00:00
abstract：:A retrospective analysis of 29 cases of squamous cell neoplasia of the vagina following hysterectomy is presented. Two groups of patients were identified; the first presented following hysterectomy for cervical dysplasia or neoplasia on an average of 5.7 years later, and the second presented following hysterectomy for...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/0002-9378(81)90016-8
更新日期：1981-02-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine how frequently general obstetricians refer pregnant patients to maternal-fetal medicine specialists in the presence of the clinical indications specified as appropriate for referral or consultation by the 1996 statement of the Society of Perinatal Obstetricians. STU...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1067/mob.2001.117348
更新日期：2001-10-01 00:00:00
abstract：OBJECTIVE:The purpose of this study was to determine the rates of late preterm inductions without a medical indication from birth certificate data and to compare them with rates that were obtained from medical charts. STUDY DESIGN:The Ohio Perinatal Quality Collaborative, which comprises 20 hospitals in Ohio that came...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/j.ajog.2010.07.004
更新日期：2010-09-01 00:00:00
abstract：:Pyridoxal phosphate (vitamin B6) concentrations in peripheral and cord blood obtained at the time of delivery were measured in 30 women. The average plasma concentration in nine women with normal pregnancy was 4.3 ng. per milliliter; in 10 women with pre-eclampsia, 3.3 ng. per milliliter; and in nonpregnant women, 17 ...
journal_title：American journal of obstetrics and gynecology
pub_type： 杂志文章
doi：10.1016/s0002-9378(16)33591-8
更新日期：1975-04-15 00:00:00
