Heart failure arises when the heart’s ability to pump blood around the body is impaired. This deprives the body’s tissues of the oxygen and nutrients upon which their survival depends. It commonly occurs as a result of conditions such as ischaemic heart disease, diabetes and high blood pressure.
Heart failure may be classified as being either acute or chronic. Acute heart failure is characterised by a sudden onset of symptoms, whereas in chronic heart failure typically develops and worsens over time.