Therapeutic venesection has been shown to be beneficial in patients with conditions such as haemochromatosis and polycythaemia. By removing 250-500ml of blood at regular intervals (venesection) the excess iron or increased red cell mass is eliminated. Venesection is generally safe and has few side effects. Possible complications include local venepuncture site haematoma, phlebitis, nerve injury, venous scarring, hypovolaemia and vasovagal syncope. The patient should also be warned of feeling lethargic for a few days after the procedure.

Procedure

Preparation