Prediction of preterm delivery in the second trimester.


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 pregnancies between 21 and 24 weeks of gestation. For the prediction of preterm delivery, the results of cervical assessment were analyzed in association with the previous obstetric history of preterm delivery, spontaneous miscarriage, and curettage. Sensitivity, specificity, and positive and negative predictive values for the various cutoff cervical lengths in the groups with or without previous history of preterm delivery were calculated. Multivariable regression analysis was used to identify the predictive factors for preterm delivery at 34 weeks or less. RESULTS:The incidence of spontaneous delivery at gestational age of 34 weeks or less was 3.4%. The mean cervical length was 30.1 mm (standard deviation 10.1 mm) in the group with previous history of prematurity (n = 180) and 35.8 mm (standard deviation 7.9 mm) in the group without previous history of prematurity (P < .001). The mean cervical length in the group of patients who delivered at or before 34 weeks was 23.8 mm, and for patients who delivered after 34 weeks it was 35.6 mm (P < .001). The mean gestational age at delivery was significantly lower in the group with funneling compared with the group without funneling (33.5 weeks versus 38.8 weeks, P < .001). Logistic regression analysis demonstrated that cervical length, funneling, and history of previous preterm delivery were independent contributors for preterm delivery. CONCLUSION:Ultrasound cervical assessment may be useful in the prediction of preterm delivery, but it should also be considered in association with the obstetric history of prematurity.


Obstet Gynecol


de Carvalho MH,Bittar RE,Brizot Mde L,Bicudo C,Zugaib M




Has Abstract


2005-03-01 00:00:00














  • Fetal cerebral Doppler studies as a predictor of perinatal outcome and subsequent neurologic handicap.

    abstract:OBJECTIVE:To study the use of middle cerebral arterial Doppler findings in a group of high-risk fetuses as a predictor of adverse perinatal outcome, including subsequent neurologic handicap. METHODS:A group of very high-risk fetuses was recruited over a 2-year period for study. Weekly fetal biometries and Doppler stud...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Chan FY,Pun TC,Lam P,Lam C,Lee CP,Lam YH

    更新日期:1996-06-01 00:00:00

  • Influence of an "opt-out" test strategy and patient factors on human immunodeficiency virus screening in pregnancy.

    abstract:OBJECTIVE:To estimate both human immunodeficiency virus (HIV) testing acceptance rates in pregnancy using an opt-out policy and patient characteristics influencing acceptance. METHODS:At the first prenatal visit, HIV testing was offered using an opt-out approach. Reasons for refusing testing were explored. Demographic...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Yudin MH,Moravac C,Shah RR

    更新日期:2007-07-01 00:00:00

  • Elevated maternal serum alpha-fetoprotein with oligohydramnios: ultrasound evaluation and outcome.

    abstract::Nineteen pregnancies evaluated for elevated maternal serum alpha-fetoprotein levels were found to have moderate to severe oligohydramnios. There were no survivors among six fetuses with ultrasound-diagnosed urinary tract anomalies. We followed 11 of the remaining 13 pregnancies with serial ultrasound examinations. Whe...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章,评审


    authors: Richards DS,Seeds JW,Katz VL,Lingley LH,Albright SG,Cefalo RC

    更新日期:1988-09-01 00:00:00

  • Cushing's syndrome complicating pregnancy. A case report.

    abstract::A case of a rare association between pregnancy and the development of Cushing's syndrome is discussed. A 29-year-old woman developed Cushing's syndrome, characterized by hypokalemia, a high level of urinary 17-hydroxycorticoids not suppressed by dexamethasone therapy, a high level of plasma 11-hydroxycorticoids which...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Wieland RG,Shaffer MB Jr,Glove RP

    更新日期:1971-12-01 00:00:00

  • A prospective study investigating the mechanism of thrombocytopenia in preeclampsia.

    abstract::Hemostatic and platelet function studies were performed prospectively on 61 preeclamptic patients and 24 healthy pregnant control patients to delineate possible causes of thrombocytopenia in preeclampsia. Thrombocytopenia occurred in 50% of the preeclamptic patients, and was accompanied by qualitative platelet defects...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Burrows RF,Hunter DJ,Andrew M,Kelton JG

    更新日期:1987-09-01 00:00:00

  • Cohort study of Silastic obstetric vacuum cup deliveries: II. Unsuccessful vacuum extraction.

    abstract::In a cohort analysis of Silastic vacuum extractor deliveries, 65% were completed with the vacuum extractor alone, 24% with outlet forceps, 3% with midforceps, and 7% with cesarean section (vacuum extractor-cesarean). Control groups were formed by using the next sequential forceps delivery, spontaneous vaginal delivery...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Berkus MD,Ramamurthy RS,O'Connor PS,Brown KJ,Hayashi RH

    更新日期:1986-11-01 00:00:00

  • What Is New in Recurrent Pregnancy Loss?: Best Articles From the Past Year.

    abstract::This month we focus on current research in recurrent pregnancy loss. Dr. Ros discusses four recent publications, which are concluded with a "bottom-line" that is the take-home message. A complete reference for each can be found on on this page along with direct links to abstracts. ...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Ros ST

    更新日期:2019-07-01 00:00:00

  • Steroid hormone contraception and bone mineral density: a cross-sectional study in an international population. The WHO Study of Hormonal Contraception and Bone Health.

    abstract:OBJECTIVE:To evaluate relationships between bone mineral density and use of steroid hormonal contraceptives. METHODS:This was a multicenter cross-sectional study in seven centers in three regions of the developing world from April 1994 to June 1997. Women 30-34 years old attending family planning clinics, with at leas...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章,多中心研究


    authors: Petitti DB,Piaggio G,Mehta S,Cravioto MC,Meirik O

    更新日期:2000-05-01 00:00:00

  • Occurrence of ovarian malignancy in childhood and adolescence: a community-wide evaluation.

    abstract::During childhood and adolescence, the rate of malignancy in ovarian enlargement is reported to be high-approximately 35% in many large series from tertiary centers. To assess whether this represents an overestimation because of the referral patterns of these institutions, a retrospective review was conducted at five h...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Diamond MP,Baxter JW,Peerman CG Jr,Burnett LS

    更新日期:1988-06-01 00:00:00

  • Ovarian cancer screening in women with a family history of breast or ovarian cancer.

    abstract:OBJECTIVE:To evaluate positive predictive values of CA 125 or transvaginal ultrasonography screening for ovarian cancer according to family history of breast or ovarian cancer. METHODS:In the screening arm of a randomized controlled trial of screening compared with usual care, 28,460 women with family history data rec...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章,随机对照试验


    authors: Lacey JV Jr,Greene MH,Buys SS,Reding D,Riley TL,Berg CD,Fagerstrom RM,Hartge P

    更新日期:2006-11-01 00:00:00

  • Eculizumab for atypical hemolytic uremic syndrome in pregnancy.

    abstract:BACKGROUND:Atypical hemolytic uremic syndrome (HUS) is a thrombotic microangiopathy often caused by mutations in complement genes. During pregnancy, disease outcome is poor both for mother and fetus. Since 2009, the humanized monoclonal antibody eculizumab has been successfully used in the treatment of atypical HUS in ...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Ardissino G,Wally Ossola M,Maria Baffero G,Rigotti A,Cugno M

    更新日期:2013-08-01 00:00:00

  • Improved Outcomes With an Enhanced Recovery Approach to Cesarean Delivery.

    abstract:OBJECTIVE:To examine the results of a quality-improvement study that implemented an enhanced recovery after surgery (ERAS) program for cesarean delivery. METHODS:A pre-post design was used to assess changes in opioid use, length of stay, and costs among all patients undergoing cesarean delivery before and after implem...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Mullman L,Hilden P,Goral J,Gwacham N,Tauro C,Spinola K,Rosales K,Collier S,Holmes L,Maccione J,Pitera R,Miller R,Yodice P

    更新日期:2020-10-01 00:00:00

  • Fetal imaging: executive summary of a joint Eunice Kennedy Shriver National Institute of Child Health and Human Development, Society for Maternal-Fetal Medicine, American Institute of Ultrasound in Medicine, American College of Obstetricians and Gynecolog

    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



    authors: Reddy UM,Abuhamad AZ,Levine D,Saade GR,Fetal Imaging Workshop Invited Participants*.

    更新日期:2014-05-01 00:00:00

  • Refining Angular Pregnancy Diagnosis in the First Trimester: A Case Series of Expectant Management.

    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


    authors: Bollig KJ,Schust DJ

    更新日期:2020-01-01 00:00:00

  • Aggressive angiomyxoma of the vulva.

    abstract::An unusual myxoid and vascular appearing neoplasm of the vulva, termed an aggressive angiomyxoma, is described in a 36-year-old Hispanic woman. The clinical presentation and recurrence pattern were typical for previously described neoplasms of the same cellular pattern. The histopathology, difficulties in determining ...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Hilgers RD,Pai R,Bartow SA,Aisenbrey G,Bowling MC

    更新日期:1986-09-01 00:00:00

  • External cephalic version for breech presentation with or without spinal analgesia in nulliparous women at term: a randomized controlled trial.

    abstract:OBJECTIVE:To compare the success of external cephalic version using spinal analgesia with no analgesia among nulliparas. METHODS:A prospective randomized controlled trial was performed in a tertiary referral center delivery suite. Nulliparous women at term requesting external cephalic version for breech presentation w...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章,随机对照试验


    authors: Weiniger CF,Ginosar Y,Elchalal U,Sharon E,Nokrian M,Ezra Y

    更新日期:2007-12-01 00:00:00

  • Carcinoma of the vulva: analysis of treatment and survival.

    abstract::The treatment of 224 patients with invasive squamous cell carcinoma of the vulva over a 20-year interval at the Mayo Clinic resulted in an overall survival rate of 75%, compared with 89% for age-matched controls. For patients with stage I disease, 5-year survival was 90%; for those with stages II, III, and IV, it was ...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Podratz KC,Symmonds RE,Taylor WF,Williams TJ

    更新日期:1983-01-01 00:00:00

  • Maternal hemodynamics and aortic diameter in normal and hypertensive pregnancies.

    abstract::The aortic diameters of 89 normotensive pregnant women were compared with those of nine rigorously defined preeclamptic women and 59 women who required antihypertensive therapy. Over the course of normal pregnancy, the diameter increased significantly; it was larger in preeclamptic than in normotensive women throughou...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Easterling TR,Benedetti TJ,Schmucker BC,Carlson K,Millard SP

    更新日期:1991-12-01 00:00:00

  • Trends and Predictors of Cerclage Use in the United States From 2005 to 2012.

    abstract:OBJECTIVE:To characterize the use of cervical cerclage on a population basis. METHODS:This population-based study of U.S. natality records from 2005 to 2012 evaluated use of cerclage in singleton and multiple gestation live births. Obstetric, medical, and demographic characteristics were evaluated. A multivariable log...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Friedman AM,Ananth CV,Siddiq Z,D'Alton ME,Wright JD

    更新日期:2015-08-01 00:00:00

  • Pregnancy after successful vaginoplasty and cervical stenting for partial atresia of the cervix.

    abstract::We previously reported surgical correction of vaginal agenesis and partial cervical atresia in an 11-year-old girl with amenorrhea and a pelvic mass. This patient, the subject of this report, conceived 7 years later and delivered at term. An abdominal cerclage was placed at 12 weeks' gestation to protect the cervix, a...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Hampton HL,Meeks GR,Bates GW,Wiser WL

    更新日期:1990-11-01 00:00:00

  • Peritoneal cytology of ovarian cancer patients receiving intraperitoneal therapy: quantitation of malignant cells and response.

    abstract::An analysis was performed of malignant and host cells found in peritoneal fluids obtained during intraperitoneal chemotherapy and immunotherapy in patients with ovarian cancer. The concentration of malignant cells and the surgically documented response to the intraperitoneal treatment were correlated. Twenty-three pat...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Sagae S,Berek JS,Fu YS,Chang N,Dauplat J,Hacker NF

    更新日期:1988-11-01 00:00:00

  • Death from pseudomembranous enterocolitis.

    abstract::During the past 2 years at the Los Angeles County-University of Southern California Medical Center (LAC-USC), there have been 2 deaths from pseudomembranous enterocolitis. Each of these deaths occurred postoperatively in previously healthy women who received pronlonged antibiotic prophylasix. The implications of these...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Ledger WJ,Puttler OL

    更新日期:1975-06-01 00:00:00

  • Effects of Shared Decision Making on Opioid Prescribing After Hysterectomy.

    abstract:OBJECTIVE:To evaluate the effects of shared decision making using a simple decision aid for opioid prescribing after hysterectomy. METHODS:We conducted a prospective quality initiative study including all patients undergoing hysterectomy for benign, nonobstetric indications between March 1, 2018, and July 31, 2018, at...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Vilkins AL,Sahara M,Till SR,Ceci C,Howard R,Griffith KC,Waljee JF,Lim CS,Skinner BD,Clauw DJ,Brummett CM,As-Sanie S

    更新日期:2019-10-01 00:00:00

  • Antimüllerian hormone as a predictor of natural fecundability in women aged 30-42 years.

    abstract:OBJECTIVE:To generate estimates of the association between markers of ovarian aging and natural fertility in a community sample at risk for ovarian aging. METHODS:Women aged 30-44 years with no history of infertility who had been trying to conceive for less than 3 months provided early-follicular phase serum and urine...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Steiner AZ,Herring AH,Kesner JS,Meadows JW,Stanczyk FZ,Hoberman S,Baird DD

    更新日期:2011-04-01 00:00:00

  • Prospective Validation of a Standardized Ultrasonography-Based Ovarian Cancer Risk Assessment System.

    abstract:OBJECTIVE:To evaluate the performance of a system that standardizes ovarian cancer risk assessment and reporting on ultrasonography. METHODS:We conducted a prospective community-based cohort study of average-risk women undergoing ultrasonography in 2016 using a reporting system that requires adnexal masses to be categ...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Suh-Burgmann E,Flanagan T,Osinski T,Alavi M,Herrinton L

    更新日期:2018-11-01 00:00:00

  • Birth-weight-for-gestational-age patterns by race, sex, and parity in the United States population.

    abstract:OBJECTIVES:To describe birth-weight-for-gestational-age patterns by race, sex, and parity in the United States population, and to discuss the measurements of gestational age by different methods, the pitfalls of each method, and the potential effects of the errors on birth-weight-for-gestational-age curves. METHODS:We...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Zhang J,Bowes WA Jr

    更新日期:1995-08-01 00:00:00

  • Severe pulmonary hypertension in pregnancy following successful repair of ventricular septal defect in childhood.

    abstract:BACKGROUND:Because of advances in surgical repair, an increasing number of women born with structural cardiac disease now live to reproductive age. Patients treated successfully in childhood are followed for varying periods of time, then may be lost to follow-up or told that no follow-up is necessary because their cond...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Jackson GM,Dildy GA,Varner MW,Clark SL

    更新日期:1993-10-01 00:00:00

  • A thrombogenic uterine pack for postpartum hemorrhage.

    abstract:BACKGROUND:A low-lying placenta or placenta previa is frequently associated with postpartum hemorrhage from a low implantation site. We describe the successful use of a thrombin-soaked uterine pack for this condition. CASE:A 30-year-old woman, gravida 3, para 0-0-2-0, had placenta previa diagnosed by ultrasound at 26 ...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Bobrowski RA,Jones TB

    更新日期:1995-05-01 00:00:00

  • High spontaneous premature labor rate in insulin-dependent diabetic pregnant women: an association with poor glycemic control and urogenital infection.

    abstract::The incidence of spontaneously occurring premature labor in insulin-dependent diabetic pregnancies is unclear, because previous studies have been confounded by a high rate of iatrogenic prematurity. The purpose of this study was to determine, in a large population of insulin-dependent diabetic pregnant women, the rate...

    journal_title:Obstetrics and gynecology

    pub_type: 杂志文章


    authors: Mimouni F,Miodovnik M,Siddiqi TA,Berk MA,Wittekind C,Tsang RC

    更新日期:1988-08-01 00:00:00

  • Effect of maternal meal ingestion on fetal renal artery resistance.

    abstract:OBJECTIVE:To examine whether maternal meal ingestion affects the fetal circulation in uncomplicated pregnancies. METHODS:A simple crossover blinded study was designed for late uncomplicated singleton pregnancies. After overnight fasting, two different maternal meal states were tested. In one state, pregnant women had ...

    journal_title:Obstetrics and gynecology

    pub_type: 临床试验,杂志文章,随机对照试验


    authors: Yasuhi I,Hirai M,Oka S,Nakajima H,Ishimaru T

    更新日期:1997-09-01 00:00:00