"Rh-positive" refers to a specific blood type that indicates the presence of the Rh factor, a protein found on the surface of red blood cells. If a person has this protein, they are classified as Rh-positive, while those without it are Rh-negative. This classification is important for blood transfusions and pregnancy, as mismatched blood types can lead to serious health issues. In the context of pregnancy, if an Rh-positive mother carries an Rh-negative baby, there can be complications. To prevent problems, doctors often monitor the situation closely and may provide treatments, such as Rh immunoglobulin, to protect both the mother and the baby.