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Kidney Failure Essay

970 words - 4 pages

Introduction
There is a pair of kidneys in the human body. They are situated towards the back of the body under the ribs, just at the level of the waist where one on either side of the body. Each kidney is composed of about one million units which are called nephrons and each nephron consists of two parts: a filter which is called the glomerulus and a tubule leading out from the nephron (Cameron 1999). According to Marshall and Bangert (2008) the kidneys have three major functions. Firstly, the kidneys are excretion of waste from plasma in the blood. The second function is that, they maintain of extracellular fluid volume and composition. Lastly, the kidneys have a role in hormone synthesis.
Renal Failure
The renal failure (kidney failure) is dangerous disorder which can affect the function of the kidneys. Stein (2002) defines the renal failure as a condition in which the kidneys are less able than normal to do their usual function. There are two classes of the kidney failure. The first one is acute renal failure which is abbreviated to (ARF) and the second one is chronic renal failure where can be shortened to (CRF). Gaw et al (2008) identified the differences between them as that the kidneys in acute kidney failure fail over a period of days or hours, while the chronic kidney failure develops over years or months. In addition, the acute renal failure may be reversed which means the normal kidney function could be regained, but the chronic renal failure is irreversible.
Chronic Renal Failure
Chronic renal failure is progressive destruction of kidney tissue by disease which if not treated the patient by dialysis (removal of waste substances from the blood of a patient whose suffer from kidney failure) or transplant (transfer an organ such as a kidney from a person to another), will result in the death of the patient. However, when the kidneys stop working completely, this situation is known as end-stage renal failure (ESRF). There are some diseases may cause chronic renal failure and this essay will focus on two types of these common diseases.

Diabetes Mellitus
One of the diseases is diabetes mellitus which is a major cause of renal failure. This disease can be defined as an increase of fasting blood glucose that is affected by a deficiency in insulin hormone. The normal range for glucose (fasting) in the blood is 2.8-6.0 mmol/L. It is classified into two groups, type 1 (insulin-dependent diabetes mellitus) and type 2 (non insulin-dependent diabetes mellitus). Stein (2008, p.6) points out that kidney failure happens most often when patients have suffered from diabetes mellitus for more than 10 years. According to United States Renal Data System (USRDS) report in 2007, approximately 44% of primary causes of renal failure is diabetes mellitus in the United States in 2005. Also, Stein (2008) indicates that 15% of dialysis patients are influenced by diabetes mellitus in the United Kingdom. Diabetes mellitus has...

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