Which of the following is false regarding Vasa Pre?: (A) Maternal moality is around 80%, (B) Seen in Velamentous inseion of placenta, (C) Unsuppoed blood vessels lie below the presenting pa, (D) Apt test is diagnostic
Answer is A. Maternal moality is not seen in Vasa Pre whereas fetal moality is seen. Vasa Pre: The unsuppoed umbilical blood vessels in Velamentous placenta lie below the presenting pa and run across cervical os. The vessels are torn either spontaneously or during rupture of membranes. Color Doppler is helpful in antenatal diagnosis Fetal moality is high (50%) due to fetal exanguination. Bleeding is fetal in origin and not maternal. Alkali debnaturation test (or Apt test) is done to distinguish fetal blood from maternal blood using NaOH as reagent. It is a qualitative test.. Ref: DC Dutta&;s Textbook of Obstetrics 8th edition Pgno: 301