Sentence examples for based on maternal serum from inspiring English sources
A screening procedure usually consists of a risk calculation based on maternal serum measurements and other parameters like nuchal translucency and maternal age, after which women with a high predicted risk can opt for invasive testing such as amniocentesis or chorion villus sampling.
The redistribution of body burden for these and other persistent organic pollutants during pregnancy needs to be more carefully defined to improve the assessment of fetal exposure to them based on maternal serum concentrations.
In the mid 1990's maternal urine analysis and in particular the quantitative immunoassay of hCGβcf was proposed as an alternative to Down syndrome screening based on maternal serum markers.
The sampling of blood from pregnant females at a specified time during gestation and the use of lipid-adjusted units can minimize these differences and improve the interpretation of the fetus's level of exposure to these chemicals based on maternal serum concentrations.
Such an effect was shown by Monroy et al. (2008), who reported lower serum PFOS and PFOA levels in maternal serum samples collected at delivery versus 24th through 28th weeks of gestation, and by Fei et al. (2007), who reported that cord:maternal ratios based on maternal serum samples were higher when collected during the second trimester than during the first trimester (Table 1).
Recent studies have reported the efficacy of first-trimester combined screening for Down syndrome based on maternal age, serum markers (human chorionic gonadotropin, pregnancy-associated plasma protein A), and ultrasound measurement of fetal nuchal translucency.
How accurate is combined screening, based on maternal age, using serum and nuchal translucency measurements in first trimester screening for Down and Edward syndromes?
Typically, such screening procedures consist of a risk calculation based on maternal age, nucal translucency and serum biomarker measurements, after which women with a high predicted risk can opt for invasive testing such as amniocentesis or chorionic villus sampling.
However, effect sizes derived from studies based on maternal rank were considerably larger than effect sizes based on direct measures of maternal condition at conception.
Classifications based on woman characteristics basically tell us "who" is being submitted to CS, based on maternal and pregnancy characteristics.
cEstimated based on maternal phased sites.
