dialysis
Dialysis
Medical Reviewing Editor: |William C. Shiel, Jr, MD, FACP, FACR|
- |What is dialysis?|
- |When do patients require dialysis?|
- |What types of dialysis are there?|
- |What does the patient do during dialysis?|
- |What are the advantages of the different types of dialysis?|
- |How can patients learn more about dialysis?|
- |Dialysis At A Glance|
- |Patient Discussions: Dialysis - Describe Your Experience|
|What is dialysis?|
The kidneys are responsible for filtering waste products from the blood. |Dialysis| is a procedure that is a substitute for many of the normal duties of the kidneys. The kidneys are two organs located on either side of the back of the abdominal cavity. Dialysis can allow individuals to live productive and useful lives, even though their kidneys no longer work adequately. In the United States, there are over 200,000 people who use dialysis techniques on an ongoing basis.
Dialysis helps the body by performing the functions of failed kidneys. The |kidney| has many roles. An essential job of the kidney is to regulate the body's fluid balance. It does this by adjusting the amount of |urine| that is excreted on a daily basis. On hot days, the body sweats more. Thus, less water needs to be excreted through the kidneys. On cold days, the body sweats less. Thus, urine output needs to be greater in order to maintain the proper balance within the body. It is the kidney's job to regulate fluid balance by adjusting urine output.
Another major duty of the kidney is to remove the waste products that the body produces throughout the day. As the body functions, the cells use energy. The operation of the cells produces waste products that must be removed from the body. When these waste products are not removed adequately, they build up in the body. An elevation of waste products, as measured in the blood, is called "|azotemia|." When waste products accumulate they, cause a sick feeling throughout the body called "|uremia|."
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