What would be an expected outcome if the mother is Rh-positive and the baby has a negative DAT?

If the mother is Rh-positive and the baby has a negative direct antiglobulin test (DAT), it is most likely that the baby is not affected by hemolytic disease of the fetus and newborn (HDFN). A negative DAT indicates that there are no antibodies bound to the baby's red blood cells, which suggests that there has been no immune reaction resulting from maternal antibodies attacking the baby’s red cells.

In the context of Rh incompatibility, although the mother is Rh-positive, the presence of a negative DAT in the baby suggests that the mother’s immune system has not produced antibodies that would lead to hemolysis of the fetal red blood cells. Therefore, without evidence of HDFN, the expected outcome for the baby is that it is likely unaffected and does not require any immediate medical interventions, such as transfusions or treatments related to HDFN.

The other options pertain to scenarios that wouldn't occur under these circumstances. For example, requiring immediate transfusion or treatment would be indicated only if there were signs of HDFN or severe anemia. Since the baby has a negative DAT, these concerns are not applicable. Additionally, while the baby might be Rh-negative, the information given does not support that as a definitive conclusion based solely