Having too few red blood cells (anaemia) makes a person feel tired. Blood transfusions or drugs can be given to increase red blood cell levels (haemoglobin). Having too many red blood cells can lead to blockages in catheters for patients on dialysis. It can also cause high blood pressure. This review of clinical studies found that increasing haemoglobin to high levels lowered the chance of a person having a seizure, but increased blood pressure. Haemoglobin levels above133 g/L did not reduce, and could possibly increase, the risk of death in people with heart and kidney disease.
- chronic kidney disease