When is blood transfusion support recommended for anaemia in cancer?

Anaemia means the blood carries less oxygen than the body needs. Cancer, chemotherapy, radiotherapy, poor nutrition, kidney problems or blood loss can contribute. A clinician considers your haemoglobin trend together with breathlessness, dizziness, chest discomfort, fainting, unusual tiredness, heart or lung conditions, active bleeding and the planned cancer treatment. The aim is to improve oxygen delivery and symptoms when a rapid effect is needed. A transfusion treats the immediate shortage of red cells; it does not remove the cause of anaemia or replace cancer treatment.

Tell your oncology team about worsening fatigue, reduced ability to walk, palpitations, bleeding, dark stools or breathlessness. They may arrange blood tests, review medicines and look for a reversible cause before discussing transfusion. If it is advised, staff check your blood group and identity, explain the process, and monitor you during and after the infusion. Ask whether iron, vitamin replacement, treatment of bleeding or another approach is appropriate for the longer term. Keep a record of new symptoms and when they occur so your team can judge urgency.

Seek urgent medical help for severe breathlessness at rest, chest pain, fainting, confusion, a rapidly worsening heartbeat, heavy bleeding or black stools. During or after transfusion, immediately report fever, chills, rash, back pain, dark urine, wheezing or sudden breathing difficulty to the clinical team. Do not wait for a routine appointment when these symptoms appear.

What is contributing to my anaemia? Are my symptoms related to the haemoglobin level or another problem? What benefit should transfusion provide now? How will you monitor me, and what longer-term plan may reduce repeated anaemia?