Why O-blooded mothers do not cause their A or B blooded child to be aborted like Rh-negative mom (on Rh)?

Question

We know about the Rh-incompatibility until it isn't NATURAL.

But why NOT the same detrimental effects on A,B, AB and other minor groups?

I just mentioned A,B & AB because they're the major group antigen/protein identification.

Answer 1

The A and B antibodies are mostly IgM which are too large to pass through the placenta and affect baby.

With the new blood type antibodies, like those that attack the Rh antigen, the concern is mainly about IgG which is much smaller and passes into the fetal circulation and destroys red cells there. The already existing anti-A and anti-B IgM can't do that. It destroys fetal red cells as they leak into the the maternal system, before a new IgG response can be generated. There are cases of ABO incompatibility caused by IgG antibodies, but they are rare.

Old Ob Doc

Answer 2

O blood is compatible with all other blood.

Answer 3

UNIVERSAL DONOR IS O

O NEGATIVE OR TYPE O RH NEGATIVE ( UNIVERSAL DONOR) THAT IS WHY.. COMPATIBLE WITH ALL TYPES OF BLOOD.

"O negative" or "type O, Rh negative," as the universal donor type in emergency situations when there is no time to type and crossmatch blood.

The Rh factor (ie, Rhesus factor) is a red blood cell surface antigen that was named after the monkeys in which it was first discovered. Rh incompatibility, also known as Rh disease, is a condition that occurs when a woman with Rh-negative blood type is exposed to Rh-positive blood cells, leading to the development of Rh antibodies.

Rh incompatibility can occur by 2 main mechanisms. The most common type occurs when an Rh-negative pregnant mother is exposed to Rh-positive fetal red blood cells secondary to fetomaternal hemorrhage during the course of pregnancy from spontaneous or induced abortion, trauma, invasive obstetric procedures, or normal delivery. Rh incompatibility can also occur when an Rh-negative female receives an Rh-positive blood transfusion. In part, this is the reason that blood banks prefer using blood type "O negative" or "type O, Rh negative," as the universal donor type in emergency situations when there is no time to type and crossmatch blood.

FULL ARTICLE

http://www.emedicine.com/EMERG/topic507....

I AM THE UNIVERSAL TAKER ( RECEIVER) OF ALL BLOOD ( A)

Answer 4

I do believe it's because O is the universal donor, I think it has something to do with both the antibodies (O has both A & B) and the antigens (O has none).

That's just my guess