Abstract:
OBJECTIVES:Our purpose was to evaluate factors that may influence perinatal outcomes in the very-low-birth-weight infant with breech presentation. STUDY DESIGN:An observational study that included all consecutive singletons and twins with the first fetus with breech presentation weighing between 500 and 1500 gm delivered at Chicago Lying-In Hospital from July 1980 to December 1987 was performed. Uncorrected and corrected perinatal mortality and morbidity were calculated. After correction, the effect of mode of delivery (vaginal versus cesarean section) was studied. A further correction was made by excluding cesarean sections performed for fetal distress. Statistical methods included chi 2 and Fisher exact tests and logistic regression analyses to calculate unadjusted and adjusted odds ratios. RESULTS:Of the 262 fetuses studied, nearly 60% were delivered vaginally and were of younger gestational age and lower fetal weight (300 gm) than those delivered abdominally. Forty-four percent weighed < or = 800 gm, and the perinatal mortality rate was 64.5% (53.3% after correction). Vaginal delivery had higher rates of depression, respiratory distress syndrome, and death. Prematurity was the most frequent cause of neonatal death. The corrected neonatal mortality was similar to the total inborn population of our neonatal intensive care unit for the same years. Logistic regression analyses revealed that the differences in outcomes between the two groups were primarily related to effects of gestational age, fetal weight, and year of delivery. After these factors were adjusted for, the odds of neonatal death for vaginal delivery compared with cesarean delivery were not significantly different (odds ratio 1.4, 95% confidence interval 0.6 to 3.5, p = 0.48). However, in the subgroup in footling attitude the differences were much greater, with an adjusted odds ratio of 3.2 (95% confidence interval 0.7 to 14.9, p = 0.13). CONCLUSION:The exceedingly poor perinatal outcomes of very-low-birth-weight breech infants are mainly related to antenatal deaths (22%), extremely low birth weight (44%), congenital malformations, and premature labor, not to the breech presentation. The route of delivery did not significantly influence outcome among complete and frank attitudes; abdominal delivery may offer some benefit for footlings. Prematurity is the primary cause of death of normal very-low-birth-weight breech-delivered infants.
journal_name
Am J Obstet Gynecoljournal_title
American journal of obstetrics and gynecologyauthors
Cibils LA,Karrison T,Brown Ldoi
10.1016/s0002-9378(94)70074-5subject
Has Abstractpub_date
1994-07-01 00:00:00pages
35-42issue
1eissn
0002-9378issn
1097-6868pii
0002-9378(94)90443-Xjournal_volume
171pub_type
杂志文章abstract:OBJECTIVE:This study was undertaken to determine whether fetal fibronectin determination is more useful for predicting preterm delivery in clinical practice than it has appeared to be in prospective blinded studies. STUDY DESIGN:Charts of 151 patients with fetal fibronectin tests performed during 2 years were reviewed...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1067/mob.2000.105411
更新日期:2000-05-01 00:00:00
abstract::During the period from September, 1974, to January, 1975, we performed 276 deliveries, of which 54% were internally monitored with a spiral type of fetal electrode. Eight of the infants monitored (incidence, 5.4%) developed scalp abscesses. We had had no previous complications associated with the electrodes. An intens...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90527-5
更新日期:1976-11-15 00:00:00
abstract:OBJECTIVE:The objective was to test the reliability of new deoxyribonucleic acid primers that have previously been used very efficiently by this laboratory with amniolysate samples to amplify a 248 bp Y-specific, repeated sequence from maternal blood during pregnancy. STUDY DESIGN:Blood samples were obtained from 50 w...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(94)70312-4
更新日期:1994-03-01 00:00:00
abstract:OBJECTIVE:Our purpose was to determine the frequency and safety of the use of epidural anesthesia and the correlation between bleeding time and maternal-neonatal bleeding complications in a group of pregnant women who participated in a multicenter trial of low-dose aspirin in pregnancy. STUDY DESIGN:Data regarding typ...
journal_title:American journal of 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:10.1016/0002-9378(95)90495-6
更新日期:1995-05-01 00:00:00
abstract:OBJECTIVE:The objective of the study was to compare biomechanical properties of vaginal versus abdominal surgical wound healing in the rabbit. STUDY DESIGN:Bilateral 6-mm full-thickness circular segments were excised from the vagina and abdominal skin in 38 New Zealand White female rabbits. Animals were killed 0, 4, 7...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2006.01.063
更新日期:2006-05-01 00:00:00
abstract::Compliance difficulties are more common among oral contraceptive users than is generally appreciated. Inconsistent use and method discontinuation are estimated to account for approximately 20% of the annual 3.5 million annual unintended pregnancies in the United States. In the past research focused on adolescents, for...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/s0002-9378(99)70718-0
更新日期:1999-02-01 00:00:00
abstract:OBJECTIVE:To evaluate the risk of adverse perinatal outcomes among pregnant women previously hospitalized for bipolar disorder. STUDY DESIGN:We completed a population-based cohort study of women with a singleton delivery in Ontario, Canada (2003 to 2011). Women previously hospitalized for bipolar disorder (n = 1859) o...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2014.10.020
更新日期:2015-03-01 00:00:00
abstract::The purpose of this investigation was to determine the diagnostic value of an average mean arterial blood pressure in the second trimester of greater than or equal to 90 mm Hg and a threshold increase in diastolic blood pressure of greater than or equal to 15 mm Hg or in systolic blood pressure of greater than or equa...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(89)90463-8
更新日期:1989-02-01 00:00:00
abstract:OBJECTIVE:To analyze the effects of preconception maternal height and weight on the risk of preterm singleton and twin births resulting from in vitro fertilization (IVF). STUDY DESIGN:We performed a retrospective cohort analysis of the incidence of very early preterm birth (VEPTB), early preterm birth (EPTB), and pret...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2013.05.052
更新日期:2013-10-01 00:00:00
abstract::The excess risk of nonfatal myocardial infarction among users of oral contraceptives observed in England and Wales can be explained in terms of the high proportion of smokers in the study population. Among nonsmokers, the relative risk associated with the use of oral contraceptives is estimated to be 2 to 1, which is ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(76)90539-1
更新日期:1976-10-01 00:00:00
abstract::In a large randomized, controlled study of fetal heart rate monitoring with either continuous electronic fetal heart monitoring or auscultation at specified intervals, only one pattern of deviation in the fetal heart rate correlated significantly with neonatal neurologic examinations at 0 to 48 hours and 72 hours to 1...
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(91)90700-2
更新日期:1991-05-01 00:00:00
abstract:OBJECTIVE:Intrapartum fetal heart rate (FHR) recordings in twins were compared for fetal signal loss during both stages of labor to assess the quality of these recordings by the method that had been used: external ultrasound or directly via a scalp electrode. STUDY DESIGN:Analysis of recordings collected between Janua...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.04.037
更新日期:2004-12-01 00:00:00
abstract:BACKGROUND:Sacral neuromodulation is an effective therapy for overactive bladder, urinary retention, and fecal incontinence. Infection after sacral neurostimulation is costly and burdensome. Determining optimal perioperative management strategies to reduce the risk of infection is important to reduce this burden. OBJE...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,多中心研究
doi:10.1016/j.ajog.2018.04.005
更新日期:2018-07-01 00:00:00
abstract:OBJECTIVE(S):To determine how the type of embryo fragmentation on day 3 affects progression of human embryos to blastocyst and pregnancy rates following embryo transfer. STUDY DESIGN:Retrospective analysis of all in vitro fertilization cycles in patients < or =40 years of age or younger from January 2002 through Decem...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2005.02.048
更新日期:2005-06-01 00:00:00
abstract::Cord blood and maternal sera were studied in a series of 227 cases of prematurely ruptured membranes (PRM) with respect to: (1) fetal immunoglobulin (lg) synthesis associated with PRM, (2) the interrelationship between different lg classes during infection, and (3) the relationship between lg values and the duration o...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(79)90948-7
更新日期:1979-08-01 00:00:00
abstract::There are conflicting data in the literature concerning the effects of oral contraceptives on platelet aggregation. We studied 26 healthy women who used oral contraceptives for at least three months. The control group consisted of 25 healthy women of childbearing age, who were receiving no medications. No differences ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(78)90897-9
更新日期:1978-10-01 00:00:00
abstract::The plasma fibronectin concentration was abnormally elevated (greater than 400 micrograms/ml) in 16 of 17 normotensive gravid women who subsequently developed preeclampsia. Of this group, 13 had elevated levels detectable greater than or equal to 4 weeks before the onset of hypertension. Our results indicate that plas...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(86)90748-9
更新日期:1986-05-01 00:00:00
abstract:OBJECTIVE:Cerebral palsy (CP) is characterized by motor deficits. There is increasing evidence that CP may result from inflammatory and infection-mediated white matter damage. Our objective was to develop an inflammatory model for CP based on chronic lipopolysaccharide (LPS) exposure with a recognizable phenotype in of...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2005.05.072
更新日期:2005-09-01 00:00:00
abstract::Fetal outcome in 98 patients with spontaneous antepartum late decelerations was studied by combining the data of two obstetric departments. Heart rate variability was used to classify the different patterns into two categories: terminal and decelerative. In 14 of the 47 pregnancies in which a terminal pattern was foun...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(80)90141-6
更新日期:1980-10-15 00:00:00
abstract::Charts from 482 singleton pregnancies undergoing cerclage placement in patients over a 6-year period were reviewed. Cervical dilatation at time of surgery, number of previous spontaneous losses, and gestational age at placement were key determinants of outcome. The most frequent complication, premature rupture of the ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(91)90283-w
更新日期:1991-09-01 00:00:00
abstract:OBJECTIVE:We sought to determine the proportion of evidence-based (EB), vs non-EB (NEB) iatrogenic late preterm birth, and to compare corresponding rates of neonatal intensive care unit (NICU) admission. STUDY DESIGN:We performed a retrospective cohort study. Cases were categorized as EB or NEB. NICU admission was com...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2011.08.007
更新日期:2011-11-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to determine the accuracy of live-birth certificates and hospital discharge data that reported of pre-existing maternal medical conditions and complications of pregnancy. STUDY DESIGN:We conducted a population-based validation study in 19 non-federal short-stay hospitals in Wash...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2005.02.096
更新日期:2005-07-01 00:00:00
abstract:OBJECTIVE:The purpose of this study was to examine the association between preeclampsia and cancer incidence. STUDY DESIGN:The Jerusalem Perinatal Study is a population-based cohort of all births to 41,206 residents of Western Jerusalem from 1964-76. Cancer incidence to 2004 was assessed by linkage of the cohort with ...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2008.06.057
更新日期:2009-01-01 00:00:00
abstract:OBJECTIVE:Both phosphorylated (p) mammalian target of rapamycin (mTOR) and protein S6 kinase 1 (p70S6K) are known to regulate protein synthesis and are affected during intrauterine growth restriction (IUGR). We studied the mTOR pathway during hyperthermia (HT)-induced IUGR in sheep. STUDY DESIGN:Beginning at 40 days g...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2009.07.031
更新日期:2009-12-01 00:00:00
abstract::Tubal biopsy specimens were obtained at the time of tubal anastomosis in 26 previously sterilized women. Scanning electron microscopy showed that half the patients had abnormalities of tubal mucosa, including loss of mucosal folds, deciliation, and polyposis. These pathologic conditions, the morphologic features of wh...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(80)90015-0
更新日期:1980-09-01 00:00:00
abstract:OBJECTIVE:The molecular mechanisms underlying ectopic implantation have not been well characterized. Here we investigate HOXA10 gene expression at the site of ectopic implantation as compared with the endometrium and with the normal fallopian tube. STUDY DESIGN:Northern blot analysis was used to evaluate HOXA10 gene m...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2004.01.066
更新日期:2004-05-01 00:00:00
abstract:OBJECTIVE:This study was undertaken to evaluate the levels of matrix metalloproteinase 2 (MMP-2) in the precursors lesions and in the invasive cervical carcinoma and to quantify the immune reactive expression of MMP-2, using MMP-2 immunohistochemistry, in intraepithelial cervical neoplasias and in the invading cervical...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/j.ajog.2003.12.017
更新日期:2004-05-01 00:00:00
abstract:OBJECTIVE:We conducted a meta-analysis using individual patient data to examine the efficacy of exercise for improving bone mineral density at the femoral neck in postmenopausal women. STUDY DESIGN:Ten controlled clinical trials that included 595 subjects (aged 42-92 years) met our criteria for inclusion. Changes in f...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章,meta分析
doi:10.1016/j.ajog.2005.09.006
更新日期:2006-03-01 00:00:00
abstract::In studying the mechanisms which govern estriol production in human pregnancy at term, 16 alpha OH-DHEA, 16alpha-OH-DHEA sulfate, and unbound unconjugated cortisol were measured in peripheral venous plasma of 28 healthy women and in cord venous and arterial plasms of their newborn infants at the time of elective cesar...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(75)90468-8
更新日期:1975-03-01 00:00:00
abstract::A prospective flow cytometric examination of ovarian epithelial tumors was undertaken to further characterize aneuploid (including triploid and tetraploid) tumor cell populations according to expression of ovarian tumor antigen CA125 and to expression of class I (normally present in ovarian epithelium) and class II (n...
journal_title:American journal of obstetrics and gynecology
pub_type: 杂志文章
doi:10.1016/0002-9378(88)90081-6
更新日期:1988-04-01 00:00:00