Dating of the intrauterine fetal demise

Posted by / 07-Dec-2016 13:29

Dating of the intrauterine fetal demise

amniocentesis, which can be done from about 14 weeks gestation, and usually up to about 20 weeks, and chorionic villus sampling, which can be done earlier (between 9.5 and 12.5 weeks gestation) but which may be slightly more risky to the fetus.One study comparing transabdominal chorionic villus sampling with second trimester amniocentesis found no significant difference in the total pregnancy loss between the two procedures.Diagnostic prenatal testing can be performed by invasive or non-invasive methods.An invasive method involves probes or needles being inserted into the uterus, e.g.If the fetus has a normal chromosome complement, a readable developmental program, then further normal development depends on normal nutrient availability (i.e., normal maternal vasculature) and normal anatomy for nutrient transport from the intervillous space to the conceptus proper (i.e., normal fetoplacental vasculature).Both of these features can be deformed or disrupted by mechanical stressors.Trisomy 18 (Edwards syndrome) is a chromosomal aneuploidy characterized by severe intellectual disability, congenital heart disease, renal malformations, low-set ears, and clenched fists.An unknown number of cases spontaneously abort during the first trimester, and approximately 70% of cases spontaneously abort during the second and third trimesters.

Anencephaly is almost always fatal at or within a few hours of birth.INTRODUCTION: Dilation and evacuation for intrauterine fetal demise has been associated with higher rates of morbidity and mortality compared with dilation and evacuation for abortion.To date, this risk has not been well studied, and no clear recommendations exist for perioperative management.The survival rate and the degree of handicap (surgically correctable to severely disabling) of children with meningomyelocele or encephalocele vary with the location and severity of the lesion and the treatment given.The estimated incidence of NTD is ~1 per 1,300 pregnancies.

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Unadjusted analyses were performed using Student's t test or Wilcoxon rank-sum test for continuous variables and Fisher's exact or [chi]2 test for categorical variables.

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