Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Kidney Failure: Choosing a Treatment That's Right for You ?
    ### Response:
    Purpose of Hemodialysis
                
The purpose of hemodialysis is to filter your blood. This type of dialysis uses a machine to remove harmful wastes and extra fluid, as your kidneys did when they were healthy. Hemodialysis helps control blood pressure and balance important minerals, such as potassium, sodium, calcium, and bicarbonate, in your blood.
    