There are many medical conditions or problems that might require a transfusion. Some reasons include cancer, operations, blood problems, pregnancy and birth.
Cancer
Transfusions may help cancer patients in a few ways, whether during surgery or to treat the side effects of chemotherapy, or even for the cancer itself.
Anaemia can be caused by many medical conditions. When it gets severe, a transfusion of red cells may help your low red blood cell count and haemoglobin.
A platelet or plasma transfusion may help your blood clot if you suffer from a bleeding disorder. If you’ve lost a lot of blood, red cells may be required.