• Question: If we are in the placenta how doctors know if we are Rh+ or Rh-?

    Asked by Alejandra to Noel on 11 Mar 2015.
    • Photo: Noel Carter

      Noel Carter answered on 11 Mar 2015:

      Usually it doesn’t matter but you can take amniotic fluid which will have some of the babies cells and test for it. It is a problem for some mothers who react to their baby. However it can be a problem if a mother is rhesus negative and the father is rhesus negative. If the baby’s blood gets into the mothers circulation then the mother has an immune reaction to it. This can lead to health problems for either mother and baby. My sister had this problem and after two daughters (luckily) she then had to be sterilised as they thought another pregnancy risked killing her.

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