Question

patient 4 needs an emergency transfusion. assuming the island contains the same blood type distribution as the u.s., what is the percentage likelihood that there will be a donor available? patient’s blood type: __________ donor blood type(s): ________ percentage of blood donors on the island: ____%

Explanation:

Step1: Determine patient's blood - type

The patient's blood agglutinates with A and Rh, but not with B. So the patient's blood type is AB+.

Step2: Identify compatible donor blood - types

AB+ patients can receive blood from AB+, A+, B+, and O+ donors.

Step3: Use U.S. blood - type distribution data

In the U.S., the approximate blood - type distribution percentages are: O+ (37%), A+ (34%), B+ (9%), AB+ (3%), O- (7%), A- (6%), B- (2%), AB- (1%).
The sum of the percentages of AB+, A+, B+, and O+ is 3%+34% + 9%+37%=83%.

Answer:

Patient’s blood type: AB+
Donor blood type(s): AB+, A+, B+, O+
Percentage of blood donors on the island: 83%