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What is dialysis and how does it work?

dialysis is the most common type of blood purification and also the major choice for kidney failure patients to sustain their life. It involves the artificial process of diffusion and ultrafiltration from the blood because the kidneys are defective. In medicine, there are different types of dialysis and the most commonly used two are:

Hemodialysis

Peritoneal dialysis

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Why is dialysis needed for kidney failure patients?

Dialysis is suggested for kidney failure patients, as it can help failed kidneys to purify blood. We all know kidney is the organ that is responsible for filtering blood and producing urine. During this process, wastes produced in the body can be discharged with excessive fluid as urine as the same time. When kidneys are injured and kidney function is impaired severely, waste products which should be expelled by kidney will pile up in blood. These harmful substances circulate with blood and may affect any part of patients’ body like digestive tract, skin system, and nerve system. This is the reason why kidney failure patients always have discomforts like nausea, vomiting, itchy skin and dizziness and so on. dialysis shows obvious and quick effects in removing these wastes, so it is required by kidney failure patients.

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Is dialysis required by all the kidney failure patients?

The importance of dialysis is undisputed in medicine, but this does not mean it is necessary for all the kidney failure patients. In some cases of kidney failure, patients experience no obvious discomforts, and also their serum creatinine is controlled well. Under such a condition, dialysis is not necessary.

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When is dialysis needed by a kidney failure patient?

dialysis is used by kidney failure patients to purify blood, so serum creatinine level is a factor that can help to whether a kidney failure patient needs to start dialysis or not. In theory, dialysis is suggested when serum creatinine increases to as high as 5, but in reality, many patients refuse to do dialysis until their life is really threatened. Besides, dialysis is usually needed when patients begin to suffer from serious discomforts like nausea, vomiting and itching skin, as these symptoms may denote toxins in their blood have increased to a very high or dangerous level. In addition, for Diabetic Nephropathy patients, they need to start dialysis or peritoneal dialysis early, in case their other internal organs are affected by long-term persistent high blood sugar.

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Can kidney failure be cured after dialysis?

dialysis is a renal replacement therapy and works through a dialysis machine outside patients’ body. Due to its obvious treatment effects in clearing some waste products like creatinine and urea and free water from the blood, dialysis plays an irreplaceable role in treating kidney failure. It works effectively and quickly in purifying blood, but disappointedly, it can not repair injured kidney intrinsic cells, so kidney function can not be improved through dialysis, also kidney failure can not be cured with this method.

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What are the effects of dialysis?

Dialysis is helpful, but long-term application of it will cause a series of side effects which include low blood pressure, infections, muscle cramp, tiredness, headache, fever, itchy skin, nausea, anemia, electrolyte imbalance, peritonitis, hernia and infectious disease and so on. Talk with doctors about the effective management is very necessary for kidney failure patients.

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