当前位置： SCI文献检索 > AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY期刊下所有文献 > Meconium has no lecithin or sphingomyelin but affects the lecithin/sphingomyelin ratio.

Meconium has no lecithin or sphingomyelin but affects the lecithin/sphingomyelin ratio.

Abstract：

OBJECTIVE:Although a few studies have evaluated the effect of meconium on the lecithin/sphingomyelin ratio for testing of fetal lung maturity, to date these studies have assessed only the lecithin-sphingomyelin ratio of amniotic fluid contaminated with meconium. The purpose of this study was (1) to determine whether meconium by itself has a lecithin/sphingomyelin ratio and, if so, (2) to determine whether the lecithin/sphingomyelin ratio is constant. STUDY DESIGN:A lecithin/sphingomyelin ratio was obtained by standard thin-layer chromatography on the first meconium stool of 20 neonates between 31 weeks and term. A quantitative assay was then performed on a sample from each gestational age (7 samples ranging from 31 weeks to term) to confirm the presence of lecithin and sphingomyelin. RESULTS:The 20 samples had atypical thin-layer chromatographic migratory patterns in the zones for lecithin and sphingomyelin. The presumed lecithin/sphingomyelin ratios ranged from 1.1 to 3.6, with no correlation with gestational age. However, the quantitative assay did not detect the presence of lecithin or sphingomyelin in any of the analyzed samples. CONCLUSIONS:Meconium does not appear to contain lecithin or sphingomyelin but has an unidentified moiety whose migratory pattern, as shown by qualitative standard thin-layer chromatography, is similar to that of lecithin with sphingomyelin. Therefore the presence of meconium in amniotic fluid may falsely raise or lower the lecithin/sphingomyelin ratio and confuse fetal lung maturity interpretations.

journal_name

Am J Obstet Gynecol

journal_title

American journal of obstetrics and gynecology

authors

Longo SA,Towers CV,Strauss A,Asrat T,Freeman RK

doi

10.1016/s0002-9378(98)70038-9

subject

Has Abstract

pub_date

1998-12-01 00:00:00

pages

1640-2

issue

6 Pt 1

eissn

0002-9378

issn

1097-6868

pii

S0002-9378(98)70038-9

journal_volume

179

pub_type

杂志文章

相关文献

AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY文献大全
  • The perils of the imperfect expectation of the perfect baby.

    abstract：:Advances in modern medicine invite the assumption that medicine can control human biology. There is a perilous logic that leads from expectations of medicine's control over reproductive biology to the expectation of having a perfect baby. This article proposes that obstetricians should take a preventive ethics approac...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章,评审

    doi：10.1016/j.ajog.2010.01.058

    authors： Chervenak FA,McCullough LB,Brent RL

    更新日期：2010-08-01 00:00:00

  • Immunologic infertility. I. Cervical mucus antibodies and postcoital test.

    abstract：:SAA and SIA were assayed in the sera of 172 infertile couples and in the CM of the women and 18 control subjects. Complete infertility evaluation was performed in all subjects except the controls. Results of these studies were correlated with PCT's. Sperm antibodies were detected in the CM of 25.6% of infertile women ...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：

    authors： Moghissi KS,Sacco AG,Borin K

    更新日期：1980-04-01 00:00:00

  • Iatrogenic ureteral injury: aggressive or conservative treatment.

    abstract：:Many different approaches are advocated for management of iatrogenic (operative) ureteric injury. We herein report our experience with 28 ureteral injuries in 26 patients. In six patients, seven injuries were recognized at the time of the initial operation; four end-to-end anastomoses and three ureteroneocystostomies ...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/0002-9378(86)90283-8

    authors： Witters S,Cornelissen M,Vereecken R

    更新日期：1986-09-01 00:00:00

  • Obstetricians and nurse-midwives: The team approach in private practice.

    abstract：:Much has been written about the need for help for the overworked obstetrician. Two obstetricians delivering over 500 babies annuallay had insufficient time for their gynecology practice. Two nurse-midwives were employed and in the first year they delivered 61 per cent of those patients who delivered vaginally. All nor...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/0002-9378(75)90940-0

    authors： Gatewood TS,Stewart RB

    更新日期：1975-09-01 00:00:00

  • The impact of the definition of preeclampsia on disease diagnosis and outcomes: a retrospective cohort study.

    abstract：BACKGROUND:The diagnostic criteria for preeclampsia have evolved from the traditional definition of de novo hypertension and proteinuria to a broader definition of hypertension with evidence of end-organ dysfunction. Although this change is endorsed by various societies such as the International Society for the Study o...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/j.ajog.2020.08.019

    authors： Reddy M,Fenn S,Rolnik DL,Mol BW,da Silva Costa F,Wallace EM,Palmer KR

    更新日期：2020-08-12 00:00:00

  • Effect of maternal docosahexaenoic acid supplementation on postpartum depression and information processing.

    abstract：OBJECTIVE:The purpose of this study was to determine the effect of docosahexaenoic acid supplementation on plasma phospholipid docosahexaenoic acid content and indices of depression and information processing for women who breast-feed. STUDY DESIGN:Mothers who planned to breast-feed their infants were assigned randoml...

    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：10.1067/mob.2003.275

    authors： Llorente AM,Jensen CL,Voigt RG,Fraley JK,Berretta MC,Heird WC

    更新日期：2003-05-01 00:00:00

  • Placental growth factor predicts time to delivery in women with signs or symptoms of early preterm preeclampsia: a prospective multicenter study.

    abstract：BACKGROUND:There is a robust association between altered angiogenic factor concentrations, which includes placental growth factor and clinically recognized preeclampsia. Alterations in concentrations of angiogenic factors precede the clinical onset of preeclampsia by several weeks. The temporal relationship between the...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章,多中心研究

    doi：10.1016/j.ajog.2019.09.003

    authors： Barton JR,Woelkers DA,Newman RB,Combs CA,How HY,Boggess KA,Martin JN Jr,Kupfer K,Sibai BM,PETRA (Preeclampsia Triage by Rapid Assay) Trial.

    更新日期：2020-03-01 00:00:00

  • Risk of metachronous ovarian cancer after ovarian conservation in young women with stage I cervical cancer.

    abstract：BACKGROUND:While there is an increasing trend of ovarian conservation at the time of surgical treatment for young women with stage I cervical cancer, the risk for subsequent ovarian cancer after ovarian conservation has not been well studied. OBJECTIVE:We sought to examine the incidence of and risk factors for metachr...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/j.ajog.2017.06.019

    authors： Matsuo K,Machida H,Horowitz MP,Shahzad MMK,Guntupalli SR,Roman LD,Wright JD

    更新日期：2017-11-01 00:00:00

  • Circadian rhythms in maternal plasma cortisol, estrone, estradiol, and estriol at 34 to 35 weeks' gestation.

    abstract：:In order to examine the relationship between circadian rhythms in different steroids, cortisol (F), estrone E1), estradiol (E2), and estriol (E3) were measured by radioimmunoassay in maternal venous plasma taken at 30 to 60-minute intervals over 24 hours from 11 healthy women at 34 to 35 weeks' gestation. Maternal F w...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/0002-9378(79)90393-4

    authors： Patrick J,Challis J,Natale R,Richardson B

    更新日期：1979-11-15 00:00:00

  • Blocking of human fertilization in vitro by sera with sperm-immobilizing antibodies.

    abstract：:Serum samples with sperm-immobilizing antibody activity from six women were examined for ability to block sperm-egg interaction by a zona penetration test where human follicular ova matured in vitro were used. Exposure of spermatozoa from a fertile healthy donor to the sera impaired binding to and penetration through ...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/s0002-9378(85)80125-3

    authors： Kamada M,Daitoh T,Hasebe H,Irahara M,Yamano S,Mori T

    更新日期：1985-10-01 00:00:00

  • Histomorphometry of the human placenta in maternal preeclampsia.

    abstract：:The placentas of five mothers with severe preeclampsia who gave birth to moderately growth-retarded term infants were compared to a group of placentas collected from mothers who had uncomplicated pregnancies and normal term infants who were appropriate for gestational age. This study demonstrated that, on a quantitati...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/s0002-9378(85)80170-8

    authors： Teasdale F

    更新日期：1985-05-01 00:00:00

  • Multiple gestations in assisted reproductive technology: can they be avoided with blastocyst transfers?

    abstract：OBJECTIVE:Blastocysts are advanced-stage embryos with high implantation potential; theoretically, limited numbers of blastocysts can be used for embryo transfer to achieve good pregnancy rates with low multiple pregnancy rates. Clinical outcomes of a newly implemented blastocyst transfer program were evaluated. STUDY ...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1067/mob.2001.114851

    authors： Gorrill MJ,Sadler-Fredd K,Patton PE,Burry KA

    更新日期：2001-06-01 00:00:00

  • Auricular acupuncture as a treatment for pregnant women who have low back and posterior pelvic pain: a pilot study.

    abstract：OBJECTIVE:The primary aim of this study was to examine whether 1 week of continuous auricular acupuncture could reduce low back and posterior pelvic pain associated with pregnancy. STUDY DESIGN:A randomized controlled trial was conducted on pregnant women who have lower back and posterior pelvic pain. These women were...

    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.2009.04.028

    authors： Wang SM,Dezinno P,Lin EC,Lin H,Yue JJ,Berman MR,Braveman F,Kain ZN

    更新日期：2009-09-01 00:00:00

  • Posttherapy residual disease associates with long-term survival after chemoradiation for bulky stage 1B cervical carcinoma: a Gynecologic Oncology Group study.

    abstract：OBJECTIVE:The objective of the study was to study posttherapy chemoradiation hysterectomy histology with long-term survival in bulky stage 1(B) cervical cancer patients. STUDY DESIGN:Gynecologic Oncology Group protocols 71 and 123 enrolled 464 patients randomly allocated to pelvic radiation (75 Gy, n = 291) plus hyste...

    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.2010.05.005

    authors： Kunos C,Ali S,Abdul-Karim FW,Stehman FB,Waggoner S

    更新日期：2010-10-01 00:00:00

  • Clinical effectiveness of a new cervical indwelling catheter in the management of premature rupture of the membranes: a Japanese collaborative study.

    abstract：:The aim of this multiinstitutional study was to evaluate a new cervical indwelling catheter in 84 patients with premature rupture of the membranes at less than 33 weeks' gestation. The average time of insertion of the catheter was 29.1 weeks' gestation, at an average of 2.0 days after rupture, and was left in place fo...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/s0002-9378(88)80080-2

    authors： Ogita S,Mizuno M,Takeda Y,Arai M,Sugawa T,Kuwabara Y,Hashimoto T,Nishijima M,Imanaka M

    更新日期：1988-08-01 00:00:00

  • Does maternal age at retrieval influence the implantation potential of euploid blastocysts?

    abstract：BACKGROUND:Age-related decline in reproductive potential is mainly due to the increased incidence of aneuploidy. Furthermore, 2 recent studies have shown that euploid embryos of older women may have a lower implantation potential compared to those of younger women, suggesting that aging might compromise embryos beyond ...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/j.ajog.2018.11.1103

    authors： Irani M,Zaninovic N,Rosenwaks Z,Xu K

    更新日期：2019-04-01 00:00:00

  • Roll-over test.

    abstract：:One hundred randomly selected nulliparous, normotensive women were subjected to the roll-over test between 28 and 32 weeks' gestation. Twenty-five women had a positive test. Thirteen of those 25 women developed pre-eclampsia requiring magnesium sulfate therapy. Eight had transient hypertension during labor requiring n...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/0002-9378(77)90362-3

    authors： Marshall GW,Newman RL

    更新日期：1977-03-15 00:00:00

  • Placental pathology in asphyxiated newborns meeting the criteria for therapeutic hypothermia.

    abstract：OBJECTIVE:We sought to describe placental findings in asphyxiated term newborns meeting therapeutic hypothermia criteria and to assess whether histopathologic correlation exists between these placental lesions and the severity of later brain injury. STUDY DESIGN:We conducted a prospective cohort study of the placentas...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/j.ajog.2010.08.024

    authors： Wintermark P,Boyd T,Gregas MC,Labrecque M,Hansen A

    更新日期：2010-12-01 00:00:00

  • Clinical profile of comorbid dysmenorrhea and bladder sensitivity: a cross-sectional analysis.

    abstract：BACKGROUND:Antecedents of chronic pelvic pain are not well characterized, but pelvic organ visceral sensitivity is a hallmark of these disorders. Recent studies have identified that some dysmenorrhea sufferers are much more likely to exhibit comorbid bladder hypersensitivity. Presumably, these otherwise healthy women m...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/j.ajog.2019.12.010

    authors： Tu FF,Datta A,Atashroo D,Senapati S,Roth G,Clauw DJ,Hellman KM

    更新日期：2020-06-01 00:00:00

  • Maternal hemoglobin F levels may have an adverse effect on neonatal birth weight in pregnancies with sickle cell disease.

    abstract：:A total of 26 patients with sickle cell disease were followed up through 32 pregnancies. There was no correlation between days in hospital or number of painful crises and either birth weight or birth weight percentile. The number of dense irreversibly sickled and least deformable cells was negatively correlated with b...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/0002-9378(89)90372-4

    authors： Anyaegbunam A,Billett HH,Langer O,Brustman L,Berger C,Wyse L,Nagel RL,Merkatz IR

    更新日期：1989-09-01 00:00:00

  • Neuroprotective peptides influence cytokine and chemokine alterations in a model of fetal alcohol syndrome.

    abstract：OBJECTIVE:Fetal alcohol syndrome (FAS) is associated with intellectual disability and neurodevelopmental abnormalities. Neuroprotective peptides NAPVSIPQ (NAP) and SALLRSIPA (SAL) can prevent some of the alcohol-induced teratogenesis including fetal death, growth abnormalities, and learning impairment in part by preven...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/j.ajog.2012.10.005

    authors： Roberson R,Kuddo T,Benassou I,Abebe D,Spong CY

    更新日期：2012-12-01 00:00:00

  • Use of the erythrocyte rosette test to screen for excessive fetomaternal hemorrhage in Rh-negative women.

    abstract：:The possibility of Rh immune globulin failure exists when a fetomaternal hemorrhage exceeds 25 to 30 ml of whole blood and only one 300 micrograms vial of Rh immune globulin is administered. In this prospective study of 1000 consecutive Rh-negative women who were delivered of Rh-positive newborn infants, the presence ...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/0002-9378(86)90725-8

    authors： Stedman CM,Baudin JC,White CA,Cooper ES

    更新日期：1986-06-01 00:00:00

  • Are endometrial polyps true cancer precursors?

    abstract：OBJECTIVE:The purpose of this study was to assess whether endometrial polyps (EMPs) represent cancer precursors. STUDY DESIGN:Age standardized incidence ratios (SIRs) of histologically verified endometrial cancers (EmCas) were estimated in women with EMPs and in women with uterine leiomyomata, which is a condition tha...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/j.ajog.2010.03.036

    authors： Perri T,Rahimi K,Ramanakumar AV,Wou K,Pilavdzic D,Franco EL,Gotlieb WH,Ferenczy A

    更新日期：2010-09-01 00:00:00

  • The effects of cocaine on neutral amino acid uptake by human placental basal membrane vesicles.

    abstract：OBJECTIVE:Prior studies have demonstrated that cocaine binds to human placental microvillous membrane vesicles at a single high-affinity site and that both 10 and 500 nmol/L cocaine inhibit sodium-dependent alanine uptake. The purpose of this study was to characterize cocaine binding to human placental basal plasma mem...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/0002-9378(94)90287-9

    authors： Dicke JM,Verges DK,Polakoski KL

    更新日期：1994-08-01 00:00:00

  • The effect of low-dose 3-keto-desogestrel added to a copper-releasing intrauterine contraceptive device on menstrual blood loss: a double-blind, dose-finding, placebo-controlled study.

    abstract：OBJECTIVE:We sought to establish the lowest dose of 3-keto-desogestrel, when added to a copper-releasing intrauterine contraceptive device, that is needed to reduce menstrual blood loss to a very low level and to treat (essential) menorrhagia successfully. STUDY DESIGN:A double-blind group comparative study was design...

    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：10.1067/mob.2000.104805

    authors： Janssen CA,Scholten PC,Heintz AP

    更新日期：2000-03-01 00:00:00

  • The nonstress test: an evaluation of 1,000 patients.

    abstract：:In November, 1978, the fetal heart rate nonstress test (NST) was instituted as the primary screening procedure for the evaluation of fetal well-being at Vanderbilt University Hospital. The results of the first 1,000 patients tested are presented. The stillborn rate within 8 days of a reactive NST was 6.4 per 1,000, wi...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/s0002-9378(16)32583-2

    authors： Barrett JM,Salyer SL,Boehm FH

    更新日期：1981-09-15 00:00:00

  • On the regulation of fetal and maternal 16 alpha- hydroxydehydroepiandrosterone and its sulfate by cortisol and ACTH in human pregnancy at term.

    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

    authors： Simmer HH,Frankland M,Greipel M

    更新日期：1975-03-01 00:00:00

  • Contemporary management of preterm premature rupture of membranes (PPROM): a survey of maternal-fetal medicine providers.

    abstract：OBJECTIVE:This study was undertaken to characterize variations in the management for women with preterm premature rupture of membranes (PPROM) among maternal-fetal medicine (MFM) specialists in the context of current recommendations for clinical practice and evidenced-based practice. STUDY DESIGN:We performed a Web-ba...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/j.ajog.2004.08.005

    authors： Ramsey PS,Nuthalapaty FS,Lu G,Ramin S,Nuthalapaty ES,Ramin KD

    更新日期：2004-10-01 00:00:00

  • The effect of tetracycline on levels of oral contraceptives.

    abstract：:Despite the widespread use of tetracycline for treatment of dermatologic disorders and sexually transmitted diseases, the pharmacodynamics of oral contraceptive use in the presence of tetracycline has not been studied. Seven normal women ingested an oral contraceptive containing ethinyl estradiol 35 micrograms and nor...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：10.1016/0002-9378(91)90617-z

    authors： Murphy AA,Zacur HA,Charache P,Burkman RT

    更新日期：1991-01-01 00:00:00

  • Serial relaxin concentrations in human pregnancy.

    abstract：:Relaxin is a peptide hormone produced by the corpus luteum during pregnancy in human beings. There are no extraluteal sites of production of relaxin in women. By means of a heterologous porcine radioimmunoassay, serial serum relaxin concentrations were determined in three women throughout pregnancy and into labor. All...

    journal_title：American journal of obstetrics and gynecology

    pub_type： 杂志文章

    doi：

    authors： Quagliarello J,Szlachter N,Steinetz BG,Goldsmith LT,Weiss G

    更新日期：1979-09-01 00:00:00