Transfusions of blood components are often necessary for the patient to complete the planned cancer treatment.
Blood transfusions are appropriate for low hemoglobin (Hb) and thrombocyte transfusions for low thrombocytes (trc) which also poses a risk for serious bleeding.
- Hemoglobin 13.4–17 g/dl
- Platelets 145–348 109/l
Assessment for a blood transfusion based on:
- symptoms/sign/function level
- underlying disease (heart/lung, serious infection)
- expected development of anemia (marrow function, current bleeding)
- acute blood loss > 15% of total blood volume
- Hb < 8.0 g/dl and symptom causing chronic anemia
- Hb < 8.0 g/dl and reduced bone marrow production without sign of regeneration
- Hb < 8.0 g/dl in perioperative period
- Hb < 7.0 g/dl in patients without symptoms of other disease
- Hb < 10.0 and receiving radiation therapy
The patient is assessed for thrombocyte transfusion based on:
- clinical status (bleeding, bleeding tendency, or fever/infection)
- ongoing bleeding and thrombocytopenia < 50x19/l
- degree of thrombocytopenia and cause of thrombocytopenia (reduced production or increased consumption)
Prophylactic platelet transfusion
- For values < 10x109/l secondary to previous chemotherapy
- Before invasive procedures
- For spinal puncture and installation of central vein catheter, thrombocytes should be 30x109/l and
- Puncture biopsies (liver/kidney/tumor) > 40x109/l
- For major surgeries, thrombocytes should be > 50x109/l. After surgery, thrombocytes should be monitored and transfusion repeated, if necessary.
Remember clinical evaluations: possible bleeding, other risk factors for bleeding, diagnosis, treatment, prognosis.
- Complete the planned treatment
- Ensure hemostasis
- Ensure adequate oxygen transport to peripheral tissue.
- Maintain intravascular fluid volume for adequate circulations of vital organs