Final answer:
CDC trauma triage guidelines include physiological determinants, anatomic criteria, and mechanism of injury. In trauma cases requiring immediate blood transfusion, O negative blood is used because it's the universal donor type. Visible agglutination with both anti-A and anti-B antibodies indicates blood type AB.
Step-by-step explanation:
The trauma triage guidelines released by the Centers for Disease Control and Prevention (CDC) to guide the most injured patients into trauma centers are D. Physiological determinants, anatomic criteria, and mechanism of injury. These guidelines are used to ensure that patients with serious injuries are rapidly identified and transported to facilities that are equipped with the resources and expertise to provide comprehensive trauma care.
In an emergency where a patient has multiple traumatic injuries and severe bleeding following a motor vehicle accident, and there is no time to determine their blood type, O negative blood is typically transfused. This is because O negative is considered the universal donor and is most likely to be compatible with any blood type due to the absence of A, B, or Rh antigens.
When a lab technician adds anti-A and anti-B antibodies to a blood sample and it agglutinates in both wells, it indicates that the patient has blood type AB. This means that the patient's red blood cells have both A and B antigens, which is a normal response for individuals with this blood type.