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At 28 weeks of pregnancy—A small number of Rh-negative women may be exposed to Rh-positive blood cells from the fetus in the last few months of pregnancy and may make antibodies against these cells. RhIg given at 28 weeks of pregnancy destroys these Rh-positive cells in the woman’s body.
10 Νοε 2022 · Rh incompatibility occurs when a person who’s Rh-negative becomes pregnant with a fetus with Rh-positive blood. With Rh incompatibility, your immune system reacts to this difference (known as incompatibility) and creates antibodies.
24 Μαρ 2020 · Usually, we don’t have to worry about blood type when deciding to have a child. However, there are some exceptions. In particular, an Rh negative mother can sometimes have pregnancy complications - though doctors have an easy way to fix this issue!
10 Ιουλ 2023 · It does not affect pregnancy if the pregnant person is Rh positive, regardless of the Rh type of the fetus. Blood from an Rh positive fetus can enter the bloodstream of the pregnant person and stimulate the production of anti-Rh antibodies.
An Rh-negative woman can become sensitized if she is pregnant with an Rh-positive fetus. If a pregnant woman is Rh negative, her fetus can be Rh positive only if the father is Rh positive.
The Rh-positive gene is dominant (stronger) and even when paired with an Rh-negative gene, the positive gene takes over: If a person has the genes + +, the Rh factor in the blood will be positive. If a person has the genes + -, the Rh factor will also be positive.
When an Rh-negative mother’s blood comes into contact with blood from her Rh-positive fetus, it causes the Rh-negative mother to make antibodies against the Rh factor. These antibodies attack the Rh factor as if it were a harmful substance. A person with Rh-negative blood who makes Rh antibodies is called “Rh sensitized.”
