The kidneys are indispensable to life. The kidney has several functions, including what is known as a filter :. The body is gradually poisoned by waste products that are no longer eliminated by the kidneys. Kidney failure is called chronic when this loss of function is progressive and the lesions present in the kidneys are definitive.
In many cases, it progresses gradually over several years. Kidney function is measured by the level of creatinine in the blood, but this level varies with the person's muscle mass and sex. This is why the degree of renal failure is defined by glomerular filtration rate, measured by creatinine clearance, which is more accurate.
According to the French classification, there are 4 stages of renal failure:. To make an appointment online, it's quick and easy click on the link below and let us guide you. Renal failure Home Renal failure Role of the kidneys.
Home Renal failure Role of the kidneys Role of the kidneys What are the kidneys used for? The kidney has several functions, including what is known as a filter : It eliminates waste products urea and creatinine carried by the blood and evacuates them in the urine. It maintains a constant quantity of water and mineral salts in the body sodium and potassium , by adjusting their urinary elimination. It also produces hormones and vitamins that are essential for certain functions: - The production of red blood cells by the bone marrow thanks to erythropoietin EPO , - Regulating blood pressure by balancing the production of hormones renin and angiotensin , - Maintaining bone quality by producing the active form of vitamin D.
Renal failure is the consequence of the progression of diseases that destroy the kidneys. The kidney is no longer able to eliminate toxins and potassium. Hyperkalaemia too much potassium in the blood can lead to cardiac arrest.
