Much like A and B, you either have the Rh antigens, in which case you're Rh positive, or your don't, and are Rh negative.

就像 A 和 B 一样，你要么有 Rh 抗原，在这种情况下，你是 Rh 阳性，要么没有，是 Rh 阴性。

Unless the mother is treated with RhoGAM shortly after giving birth, she will begin to form anti-Rh positive antibodies.

除非母亲在分娩后不久接受RhoGAM治疗，否则她将开始形成抗Rh阳性抗体。

The possible blood types we could have are A, B, AB and O, and each one of these can be either Rh positive or negative.

我们可能拥有的血型是A型、B型、AB型和O型，其中每一种都可能是Rh阳性或阴性。

However, the mother has become sensitized by Rh positive antigens from that first child.

然而，孕产妇已经被来自第一个孩子的Rh阳性抗原致敏。

That means she will start to form anti-Rh positive antibodies.

这意味着她将开始形成抗Rh阳性抗体。

Let's say that she is a pregnant Rh negative woman who is carrying an Rh positive child.

假设她是一个怀孕的Rh阴性妇女，怀着一个Rh阳性的孩子。

But, the mother is now sensitized by Rh positive antigens that have passed through the placenta and into her bloodstream.

但是，母亲现在已通过胎盘进入她的血流的Rh阳性抗原致敏。

In fact, the first pregnancy for an Rh negative mom and an Rh positive child typically results in a healthy baby.

第一次妊娠通常正常，胎儿健康。

This is important when we look at a pregnant Rh negative woman who is carrying an Rh positive child.

Rh阴性孕妇怀有Rh阳性胎儿时，可能出现严重问题。

For example, you may have AB blood in the ABO blood group system, be Rh positive in the Rh system, as well as being K positive in the Kell system, and so on.

例如，你可能是ABO血型系统中的AB血型，或是Rh血型系统中的Rh阳性，也可能是Kell血型系统中的K阳性，等等。

This will be a problem if she ever becomes pregnant again with an Rh positive child, because her antibodies will reject the child.

如果她再次怀有Rh阳性孩子，这将是一个问题，因为她的抗体会拒绝孩子。

If she is not treated and becomes pregnant again with an Rh positive child, her child could develop Erythroblastosis Fetalis, also known as Hemolytic Disease of the Newborn.

如果不接受治疗，再次怀上一个Rh阳性的孩子，她的孩子可能会发展成胎儿红细胞增多症，也称为新生儿溶血病。

Most of the population is Rh positive, so they don't have the anti-Rh antibodies, which means they can accept either positive or negative blood. But negative types should stick to just the Rh negative blood.

大多数人是 Rh 阳性，所以他们没有抗 Rh 抗体，这意味着他们可以接受阳性或阴性血液。但是阴性类型应该只坚持 Rh 阴性血液。

The only significant point is that because the antibodies are now in her bloodstream, she can never again come in contact with Rh positive blood or her antibodies will attack.

唯一有意义的一点是，因为抗体现在在她的血液中，她再也不能接触到Rh阳性的血液，否则她的抗体会发动攻击。

However, if this woman gets a bad blood transfusion that contains Rh positive blood, her body will now be 'primed, ' or 'sensitized, ' to the Rh positive antigen and start to produce anti-Rh positive antibodies.

然而，如果这名妇女输了含有Rh阳性血液的不良输血，她的身体将被Rh阳性抗原" 激发" 或" 致敏" ，并开始产生抗Rh阳性抗体。

During pregnancy, and especially during delivery, there is a good chance that the child's Rh positive blood can pass through the placenta and into the mother's bloodstream - somewhat like the blood transfusion we talked about earlier.

在怀孕期间，特别是在分娩期间，孩子的Rh阳性血液很有可能通过胎盘进入母亲的血液——有点像我们之前谈到的输血。