A patient (25 year old male), arrives in the emergency room, suffering from a ruptured spleen from a car accident. The ER physician orders 10 units of RBCs be on stand by for the patient. The patient’s blood type is A negative. What blood types can be infused in the patient? Your patient has received 7 units of the blood crossmatched above and is heading to the OR. The surgeon wants 10 units on standby (spleens really bleed). You are out of Rh negative blood. What are your options?