Dialysis: Definition, Purpose, Different Types, and Major Risk Factors

Dialysis: Definition, Purpose, Different Types, and Major Risk Factors

Definition, Purpose, Different Types, and Major Risk Factors of Dialysis

What is the definition of Dialysis?

The kidneys purify the blood by filtering both waste products and extra water. Such waste is transferred to the bladder and eliminated when you pee.

Dialysis replaces the function of the kidneys if they fail. End-stage renal failure happens when the kidneys effectively operate about 10% to 15% of their usual capacity, according to the National Kidney Foundation.

Dialysis is a medical procedure that uses a machine to filter as well as purify the blood. When your kidneys aren’t working properly, this keeps your fluids and electrolytes balanced.

People with renal disorders have been treated with dialysis since the 1940s.

What is the purpose of Dialysis?

Quantity of water, waste, as well as other contaminants, are prevented from collecting in the body when your kidneys are working properly. It also aids in the management of blood pressure and the regulation of chemical components in the blood. Sodium and potassium are two examples of these elements. The kidneys can even activate a kind of vitamin D that aids the absorption of calcium.

Dialysis would assist maintain your body working as normally as possible when your kidneys are unable to execute these duties due to disease or injury. Salts as well as other waste would build up in the bloodstream without dialysis, damaging your body as well as causing harm to the other organs.

Dialysis, on the other hand, isn’t a cure for kidney disease or other renal disorders. To address those issues, other therapies may be required.

What are the various forms of Dialysis?

Dialysis is classified into three categories:

1. Hemodialysis Dialysis:

The much more prevalent kind of dialysis is hemodialysis. The artificial kidney is used to eliminate waste and excess fluid from the bloodstream during this procedure. Your blood is taken out of the body as well as filtered by the prosthetic kidney. Also with the assistance of a dialysis machine, the filtered blood is returned to the body.

So the doctor will undertake surgery to build an access point into your blood arteries to allow blood to travel towards the artificial kidney. The following are the three types of passageways:

Arteriovenous (AV) fistula is a kind of fistula that connects the arteries and veins in the body. An artery, as well as a vein, are connected with this kind. It is the best choice.

AV graft is a type of transplant that involves the use of an artificial vein The looping tube is the type that we’re talking about.

Catheter for vascular access. It can go into a major vein throughout the neck.

2. The second type is Peritoneal Dialysis:

Peritoneal dialysis would be a procedure in which a peritoneal dialysis (PD) catheter is implanted inside the abdomen. This peritoneum, a membrane in your belly, filters your blood with the catheter. Dialysate, a particular fluid, is injected into the peritoneum throughout therapy. Waste is absorbed by the dialysate. This waste is emptied from your abdomen when the dialysate takes it out of your circulation.

Such a procedure takes several hours to complete and must be done three to six times each day. Fluid interchange, on the other hand, maybe done when you’re ready for the change.

Peritoneal dialysis is available in several distinct forms. Here are the most significant aspects:


CAPD is known as Continuous Ambulatory Peritoneal Dialysis. CAPD involves filling and emptying your abdomen several times a day. Such procedure does not necessitate the use of a machine and should be done when awake.


CCPD is known as Continuous Cycling Peritoneal Dialysis. The fluid in and out of your abdomen is cycled by a machine in CCPD. This is normally done when you’re sleeping at night.


IPD is known as Intermittent Peritoneal Dialysis. Such procedure is normally carried out in a hospital, although it can also be carried out at home. This machine is the same as for CCPD, however, the procedure takes more time.

3. The last form of dialysis is Continuous Renal Replacement Therapy (CRRT):

Such treatment is generally utilized in the critical care unit for persons who are suffering from acute renal failure. Hemofiltration is another name for it. Blood is pumped via tubes by a machine. Such waste materials including water are subsequently removed using a filter. This blood, coupled with replacement fluid, is returned to the body. Such operation is carried out 12 to 24 hours a day, daily.

What are the major risks factors of dialysis?

The major risks factors of dialysis are:

1. A low blood pressure reading.

2. Anemia, which is defined as a lack of red blood cells.

3. Cramping in the muscles.

4. Discomfort in the stomach

5. The infection enters the body.

6. Bone deterioration.

7. Renal recovery becomes slowed.

8. A rapid or abnormal heartbeat.

Credit – Komal Sharma

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