A trauma patient presents to the ER with severe hemorrhage. His blood type is O positive. Based on this information, the nurse knows that he may receive blood only from a person with which of these blood types?

A patient with type O positive blood may receive blood from another type O (negative or positive) person. While type O blood is known as the universal donor (any blood type can receive type O blood), he or she can only receive type O blood via transfusion. Additionally, this patient has a positive Rh factor, meaning that he may receive blood with or without Rh factor (i.e., positive or negative, respectively)