منابع مشابه
Does advanced maternal age confer a survival advantage to infants born at early gestation?
BACKGROUND Recent studies have shown that older mothers who deliver at preterm gestation have lower neonatal mortality rates compared with younger mothers who deliver at preterm gestation. We examined the effect of maternal age on gestational age-specific perinatal mortality. METHODS We compared fetal, neonatal and perinatal mortality rates among singleton births in the United States, 2003-20...
متن کاملRisk assessment of preeclampsia in advanced maternal age by uterine arteries Doppler at 17-21 weeks of gestation.
OBJECTIVE To assess the risk of preeclampsia development in elderly gravidarum by uterine arteries Doppler at 17-21 weeks' gestation. MATERIAL AND METHOD Pulsatility index (PI) of the uterine arteries was measured by color Doppler transabdominal sonography in 298 elderly gravida women at 17-21 weeks of gestation. The criterion for abnormal results was PI > 95th percentile of each gestational ...
متن کاملPulsar Death at an Advanced Age
I summarize the theory of acceleration of non-neutral particle beams by starvation electric fields along the polar magnetic field lines of rotation powered pulsars, including the effect of dragging of inertial frames which dominates the acceleration of a space charge limited beam. I apply these results to a new calculation of the radio pulsar death line, under the hypotheses that pulsar “death”...
متن کاملResistin in Cord Blood of Small for Gestation Age and Appropriate for Gestation Age Term Neonates
OBJECTIVE Placental hormones such as resistin, adiponectin, ghrelin and leptin are known to have considerable role in fetal growth and there are some articles published in this area recently. Nevertheless there is a shortage of data showing association between resistin level and fetal growth; that was why we decided to conduct a study to evaluate this association. METHODS This study was appro...
متن کاملDecision Support for Fetal Gestation Age Estimation
An inherent difficulty associated with the neonatal care domain is the uncertainty of the figure established for the chronological development (Gestational Age) of the fetus. This leads to difficulties when trying to match fetal subject parameters against established population metrics for standard fetal development. The Gestation Age (GA) metric can be grossly inaccurate, depending upon when i...
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ژورنال
عنوان ژورنال: The Boston Medical and Surgical Journal
سال: 1857
ISSN: 0096-6762,1533-4406
DOI: 10.1056/nejm185702260560406