Rh Sensitization: Mother Rh+ve & Child Rh-ve

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Discussion Overview

The discussion revolves around the implications of Rh sensitization in cases where the mother is Rh-positive and the child is Rh-negative, particularly focusing on the risks associated with blood transfusions and the transmission of Rh antibodies. The scope includes theoretical considerations, potential medical outcomes, and the biological mechanisms involved in Rh sensitization.

Discussion Character

  • Debate/contested
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • One participant questions whether a baby born Rh-negative to an Rh-positive mother would be sensitized if given Rh-positive blood after birth, and whether a reaction would occur during the first transfusion.
  • Another participant asserts that Rh antibodies, once produced, last indefinitely and discusses the limited risk of blood mixing during pregnancy due to the placenta's protective role.
  • A different participant raises concerns about the probability of losing a second baby in cases of Rh incompatibility, noting the potential for maternal antibodies to affect the fetus.
  • Some participants express uncertainty about whether Rh antibodies can be transmitted from mother to baby through the placenta, with conflicting views on the matter.
  • One participant clarifies that Rh antibodies do indeed get transmitted and links this to the condition erythroblastosis fetalis, while questioning the likelihood of maternal Rh antigens entering the baby's bloodstream.

Areas of Agreement / Disagreement

Participants express differing views on the transmission of Rh antibodies and the implications for fetal health, indicating that the discussion remains unresolved with multiple competing perspectives on the mechanisms and risks involved.

Contextual Notes

There are limitations regarding the assumptions made about blood mixing during pregnancy and the specific conditions under which Rh antibodies may affect the fetus. The discussion also reflects uncertainty about the biological processes involved in Rh sensitization.

Suraj M
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A problem arises when the mother is Rh-ve and the child is Rh+ve ,
consider a mother Rh+ve and the child Rh-ve, after birth, if the child is given Rh+ve blood, will the baby just get sensitized or will a reaction take place in the first transfusion itself as the baby was sensitized in the womb itself?
Also when an Rh-ve individual gets sensitized, how long to the Rh antibodies last?
 
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Rh antibodies, once produced last forever.

A baby only has access to the mom through placenta, so, there is no risk because the placenta only has baby's blood. The only minute circumstance that it could happen is if the baby is injured during the birth process and has an open wound that could be exposed to mom's blood. Even then it would be unlikely.
 
Is the probability of loosing the second baby the same, if the mother is Rh-ve and baby is Rh+ve ... because for that to happen the blood of the mother and baby should mix too, but i have heard that antibodies can be transmitted from the mother to the baby(through the placenta), but not all antibodies, is Rh antibody, one of them?
Thanks for all your replies(not just here), physics student20 :smile:
 
Rh antibodies don't get transmitted from the mother to the baby through placenta if what I feel..
You are welcome :smile:
 
PhyStudent20 said:
Rh antibodies don't get transmitted from the mother to the baby through placenta if what I feel..
actually Rh antibodies do get transmitted from the mother to the baby, that is the basis for erythroblastosis fetalis, it does happen, through the placenta.
But if the mother has Rh antigen and the baby Rh-ve , will the baby get sensitized?
PhyStudent20 said:
Even then it would be unlikely.
microhemorrhages are quite common..but do the Rh antigen(RBC) of the mother enter into the blood stream of the baby or not?
 

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