The study proposes an index of fetal aortic isthmus blood flow (IFI) that provides information on blood flow direction and volume during the second half of pregnancy.
IFI may aid fetal aortic isthmus assessment; leaves open clinical utility pending prospective validation.
The proposed IFI provides information on the direction and, indirectly, on the volume of blood flow through the fetal aortic isthmus.
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Ruskamp et al. (2003) studied this question.
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