Following a gunshot wound, an adult client has a hemoglobin level of 4 g/dL (40 g/L). The nurse prepares to administer a unit of blood for an emergency transfusion. The client has AB negative blood type and the blood bank sends a unit of Type A Rh negative, reporting that there is no Type AB negative blood currently available. Which intervention should the nurse implement? Reference Range Hemoglobin [14 to 18 g/dL (140 to 180 g/L)]

A. Transfuse Type A negative blood until Type AB negative is available: In an emergency, when AB negative blood is unavailable, Type A Rh-negative blood is an acceptable alternative for an AB negative recipient. It shares compatible A antigens and lacks the Rh factor, minimizing transfusion reaction risk. B. Recheck the client's hemoglobin, blood type, and Rh factor: This information has already been determined, and delaying transfusion in a critical situation could worsen hypoxia and risk death. C. Administer normal saline solution until Type AB negative is available: Saline can temporarily support circulation, but it does not address the critical oxygen-carrying deficiency from severe anemia, which requires immediate blood transfusion. D. Obtain additional consent for administration of Type A negative blood: In life-threatening emergencies, blood transfusions may proceed under implied consent, particularly when delay would place the client at risk.