25. Blood product transfusion: Diagnosis
This patient is suffering from an acute haemolytic transfusion reaction, as evidenced by his fever,
hypotension, chest pain, timing of blood product delivery and change in urine colour. There is no
drop in oxygenation or change in respiratory rate to suggest PE or fluid overload, and further blood
loss should not lead to a fever. The most common cause of acute haemolytic reaction is clerical
error, and so it is very important to note that a second patient may also be given the wrong blood at
the same time.
Source: Transfusion reaction - Symptoms, diagnosis and treatment | BMJ Best Practice