The patient must present with a full bladder. 1  2hrs prior to the appointment, the patient should empty their bladder. 2  Over the next hour they should drink at least 1 litre of water. This allows time for the water to reach the bladder. 3  Do not go to the toilet until instructed by the Sonographer.
It is important to get the Rhogam shot if you are a negative blood type and your significant other is a postive. Negatuve blood type is a recessive trait, therefore its highly likely your baby will have a postivie blood type. A negative blood type means your blood cells lack a protien coating.
How Does Taking A RhoGAM Shot During Pregnancy Help? The term Rh positive refers to people who have Rh in their blood. On the other hand, the term Rh negative refers to people who do not have Rh in their blood (4). Caucasians are more likely to have Rh negative blood (5).