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Reference.org
Placental insufficiency
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<p>Placental insufficiency or utero-placental insufficiency is the failure of the <a href="/facts/Placenta/7XUoks1b">placenta</a> to deliver sufficient nutrients to the fetus during <a href="/facts/Pregnancy/vEKYGpep">pregnancy</a>, and is often a result of insufficient blood flow to the placenta. The term is also sometimes used to designate late decelerations of fetal heart rate as measured by <a href="/facts/Cardiotocography/TFf7EcFj">cardiotocography</a> or an <a href="/facts/Nonstress_test/H5N9jaTh">NST</a>, even if there is no other evidence of reduced blood flow to the placenta, normal uterine blood flow rate being 600mL/min. </p>