![]() We’re still learning about how blood type may impact fertility and pregnancy, but here’s what some of the research shows: How Does Blood Type Influence Fertility and Pregnancy? There are also subgroups within the blood types, such as Rh positive or negative, which need to be taken into account when looking at a potential blood type issue. Parents who are both type As can have children with blood type O. Couples who are both type Os will have children who are blood type O. If you have type A proteins, you are type A and so forth. Your genetic makeup and proteins on the surface of your red blood cells determine your blood type. There are four main blood types: O, A, B and AB. ![]() We want to help you become educated on the topic, and remember that blood type is just one factor involved in your journey to conception. Evidence finds incompatibility between blood types can influence fertility or pose miscarriage risk for a small percentage of couples. If you have further questions after reading this leaflet, please ask your doctor.Can your blood type affect your ability to conceive and carry a healthy pregnancy? Should you be concerned? While blood type is not a common cause of fertility issues, it can play a role. Before giving consent, it is important to understand why you need the treatment and its risks and benefits for you. Reactions that are more common are:Įveryone has the right to decide whether or not to have any treatment. Very rarely a person may be allergic to RhD immunoglobulin (antibodies). The donors and donations are screened to reduce the risk of transmitting any diseases. Early medical abortion is not considered to be a sensitising event.Īnti-D is made from the plasma (liquid part of blood) of carefully selected blood donors from the Australian Red Cross Lifeblood. To be effective, this must be given as soon as possible within 72 hours of a ‘sensitising’ event, such as surgical abortion, before the immune system has the chance to make its own antibodies. You will only be offered an Anti-D injection if you have a Rhesus negative blood group. This condition is known as Haemolytic Disease of the Newborn (erythroblastosis fetalis).īy giving an injection of Rhesus antibodies, known as Anti-D, the person’s immune system is stopped from making antibodies against future pregnancies, preventing Haemolytic Disease of the Newborn. This can cause serious complications such as severe anaemia, brain damage and even death of the fetus in some cases. The immune system has a good memory, and this means that in any future pregnancies where the fetus is again Rhesus positive, large amounts of these antibodies can be made rapidly and may cross the placenta (the afterbirth) and destroy the fetus’ blood cells. Your immune system will treat the blood cells from the fetus as foreign and respond by making antibodies against them. ![]() This would usually only happen at the time of birth, or during an event such as a miscarriage or surgical abortion. Problems can occur when some of the blood cells from the fetus mix with your blood. The blood type of the fetus cannot be tested until after birth. When pregnant, someone who has Rhesus negative blood, may have a fetus that is Rhesus positive. Why is Rhesus negative blood group important in pregnancy?
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