vasa previa


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va·sa pre·vi·a

umbilical vessels presenting in advance of the fetal head, usually traversing the membranes and crossing the internal uterine os.

va·sa pre·vi·a

(vā'să prē'vē-ă)
Umbilical vessels presenting in advance of the fetal head, usually traversing the membranes and crossing the internal cervical os.

vasa previa

, vasa praevia
The blood vessels of the umbilical cord presenting before the fetus.
See also: vasa
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