what does a kidney dialysis machine do?

Answer 1

It acts in place of your kidney. Your kidney basically filters your blood and takes the bad stuff and impurities out and puts it in your Urine.

The filtered and cleaned blood is returned back to your body.

Here is a link to an article about how it works if you want more information: http://science.howstuffworks.com/question17.htm

Answer 2

Kidneys serve 3 basic functions: remove excess fluid, filter out waste and excess electrolytes, and produce hormones. When a person is in kidney failure, their kidneys only only able to do a minimal amount of those 3 things.

Dialysis machines remove excess fluid and remove waste and excess electrolytes.

In dialysis the patient's blood is taken out of the body (2 cups worth at any one time) and put back in using 2 needles and bloodlines. It creates a loop of blood, and in the middle of that loop is the dialysis machine and a dialyzer. A dialyzer is a filter for the blood.

Within the dialyzer, or filter, is where fluid and waste are removed. The waste is removed through diffusion, and a good visual example is how a tea bag works. The tea bag itself is a filter, and the tea moves from where there is a lot of tea (inside the bag) to where there isn't any tea (the surrounding water). In the dialyzer the blood is seperated from water by a filter. The electrolytes and waste go from where the waste is concentrated (in the blood) and it moves across the filter to the water. That water is flushed away once waste moves into it.

The dialyzer also helps remove excess water. When the kidneys fail, the person does not urinate very much. The excess fluid has nowhere to go, so it builds up in the bloodstream and body tissues. This is why many dialysis patients have swelling in their ankles.

The way the dialyzer removes the water is by putting the blood under pressure. Remember that in the dialyzer the blood is seperated from water by a filter. With the blood under more pressure than the water on the other side of the filter, the water in the blood "wants" to go to where there is less pressure, so it goes across the filter into that same water that flushes away the waste. The amount of water that is removed is controlled by how much pressure the dialysis machine puts on the blood. The more pressure, the faster the water is removed. On average a person will gain between 6-9 lbs of fluid between treatments. That excess fluid is hard on the heart, and so patients are counseled and encouraged to restrict their fluid intake as much as possible.

Dialysis is a relatively non-invase treatment with 2 needles being placed in your arm for each treatment. The average dialysis patient has 4-hour treatments 3 days a week.

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Answer 6

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RE:
what does a kidney dialysis machine do?

Answer 7

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Do you mean they stop receiving dialysis completely? If a person with kidney failure is not on dialysis they cannot survive for very long as the kidney is needed to filter the blood and helps maintain blood pressure.

Answer 8

A kidney dialysis machine bascially does the job of the kidneys because the kidneys are unable to. The diaylsis machine cleans the blood flowing thru the kidneys to rid it of unwanted substances (like excess postassium and urea). Then the blood can flow back into the body, clean and ready for more use.

Answer 9

Natural Kidney Health Restoration Program - http://HealKidney.neatprim.com

Answer 10

Ther are 2 types of dialisys Hemo and Parataneal with Hemo a shunt or bypass vein is placed in the leg or upper chest, then your blood is pumped from the shunt through an artifical kidney cleaned and returned back to the shunt. This is done 3 times a week.
Parataneal is when a tube is surgerically inplanted in to the paratanium cavity then a solution of dialisate fills the cavity and by way of reverse osmosis removes all the impurities in the blood
this is done several times a day or at night while you are sleeping

Answer 11

people who are on dialysis have kidneys that no longer filter impurities as they should. the machines are filters that they must be connected to that cleanse the blood. this is usually done 2-3 times a week, sometimes more.