Types of renal failure

Clinical Nutrition
Lesson 30: Renal disease

Types of renal failure

There are two types of renal failure: acute and chronic. Acute renal failure occurs suddenly and is usually initiated by underlying causes, for example dehydration, infection, serious injury to the kidney . Acute renal failure is often reversible with no lasting damage.

Acute renal failure can occur for any number of different reasons, but the three most common explanations are blood flow problems, toxic damage caused by medicines, infections and poisons and kidney blockage. Blood circulation problems can manifest due to blood loss or dehydration. A sepsis infection, or an accumulation of toxins or bacteria, can negatively impact the kidneys as well. Some antibiotics, pain medications, blood pressure medicines and X-ray dyes have also been shown to harm the kidneys, though this is more common in people who already suffer from related, common health problems. In addition, kidney stones, tumors, enlarged prostate glands and injury can damage the kidneys and result in acute renal failure.

Chronic renal failure is more serious than acute renal failure because symptoms may not appear until the kidneys are extremely damaged. Chronic renal failure can be caused by other long term diseases, such as diabetes and high blood pressure. Chronic renal failure can worsen over time, especially when the problem has gone undiagnosed and treatment is delayed.

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Last modified: Monday, 7 November 2011, 5:53 AM