Difficulty: Medium
Average Score: 80%
Simulated
A 65-year-old patient has just received a blood transfusion. Shortly after the transfusion begins, the patient complains of chills, back pain, and difficulty breathing. What is the most likely cause of these symptoms?
Correct answer
D
Rationale
Acute hemolytic transfusion reaction causes chills, back pain, and breathing difficulty due to immune-mediated red cell destruction, requiring immediate intervention.