Cardiac size and shape in fetuses with absent or reversed end-diastolic velocity of the umbilical artery and severe growth restriction before 34 gestational weeks can be a marker for perinatal survival

In growth restricted fetuses before 34 weeks of gestation, absent or reversed end-diastolic velocity of the umbilical artery (AREDV) increases the odds for fetal death. AREDV is associated with increased placental resistance to blood flow resulting in an increased fetal cardiac afterload with fetal and neonatal consequences.

Reduced fetal growth velocity precedes antepartum fetal death

Fetal death diagnosed after 20 weeks of gestation accounts for more than half of annual infant deaths in the U.S. Since birthweight has been considered a surrogate of fetal growth, and a small for gestational age neonate is associated with fetal death, fetal growth restriction is frequently cited as a precedent of antepartum stillbirth.

Research team finds reason mothers rarely pass COVID-19 virus to fetus

Researchers at the Wayne State University School of Medicine and the Perinatology Research Branch of National Institute of Child Health and Human Development/National Institutes of Health in Detroit have found that placental cells minimally express the instructions, or mRNA, to generate the cell entry receptor and protease required by the virus that causes COVID-19 to invade human cells.