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Dialysis Machine

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Friday, June 26, 2009

Portable Hemodialysis Machine : NxStage

NxStage Medical, Inc. is one of medical supplier company which leading manufacturer of innovative dialysis products. On the 2005, they are released a Hemodialysis Machine "NxStage System One", a portable unit that allows patients to conduct their own dialysis at home or on the road.

The NxStage System One is a portable kidney dialysis machine that became the first truly portable home hemodialysis machine. NxStage using FDA clearance's system to deliver multiple therapy options, and delivers these therapies in short intermittent schedules, long continuous schedules, or anything in between patient condition.


Home or portable hemodialysis machine NxStage can be easily configured for chronic care or critical/acute care settings, and can be routinely used in treatment of chronic renal failure, acute renal failure, and fluid overload associated with heart failure.

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Monday, June 22, 2009

Kidney Dialysis Machine

Kidney Dialysis machine is A machine that cleans patient's blood from waste products and excess water when the kidneys are dysfunctional,damaged or missing.we can say also that dialysis machine tries to mimic some of the functions of a human kidney One of the primary jobs of a kidney is to remove urea and certain salts from the blood so they can exit the body in urine.

The dialysis machine is taking the blood through a vein in the forearm or arteriole-venous (AV) fistula.to the dialysis machine through plastic tubing. The dialysis machine itself can be thought of as an artificial kidney. Inside, it consists of more plastic tubing that carries the removed blood to the dialyser, a bundle of hollow fibers that forms a semipermeable membrane for filtering out impurities.

In the dialyser, blood is diffused with a saline solution called dialysate, and the dialysate is in turn diffused with blood. Once the filtration process is complete, the cleansed blood on the kidney dialysis machine returned to the patient. Most sessions take about four hours.

There are many kidney dialysis machines portable dialysis machin or we can call home dialysis machine and fix dialysis machine that the patient mast be coming to the hospital or dialysis center to do dialysis there.

Gambro and fresenius is one of kidney dialysis machines branch....

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KIDNEY DIALYSIS

When your kidneys are healthy, they clean your blood. They also make hormones that keep your bones strong and your blood healthy. When your kidneys fail, you need treatment to replace the work your kidneys used to do. Unless you have a kidney transplant, you will need a treatment called kidney dialysis.

Dialysis is a treatment that does some of the things done by healthy kidneys.

Dialysis (from Greek "dialusis", meaning dissolution, "dia", meaning through, and "lusis", meaning loosening) is a procedure that is a substitute for many of the normal duties of the kidneys,and primarily to provide an artificial replacement for lost kidney function (renal replacement therapy) due to renal failure we can use a dialysis.

Kidney Dialysis or Hemodialysis also called renal dialysis is blood cleansing method capable of restoring the fluid-electrolyte balance and of eliminating water in excess and toxic substances which accumulate in the organism in course of kidney failure rendering them to a liquid with an electrolytic content similar to that of normal plasma which does not contain them; here and below such liquid will be indicated with the term "dialysing solution".

The application of such method envisages that, after being aspirated from the patient's arm, the blood flows along the so-called arterial line,practically To get your blood into the artificial kidney, the doctor needs to make an access (entrance) into your blood vessels. This is done by minor surgery to your arm or leg. The access can be temporary or permanent.

Sometimes, an access is made by joining an artery to a vein under your skin to make a bigger blood vessel called a fistula.

However, if your blood vessels are not adequate for a fistula, the doctor may use a soft plastic tube to join an artery and a vein under your skin. This is called a graft.

Occasionally, Temporary access takes the form of dialysis catheters, also called tunneled catheters made by means of a narrow plastic tube or hollow tubes inserted into large veins that can support acceptable blood flows. Most catheters are used in emergency situations for short periods of time.

However, catheters can be used for prolonged periods of time, often weeks to months, but it is sometimes used for long-term treatment.

Blood is diverted from the access point in the body to a dialysis machine. Here, the blood flows counter-current to a special solution called the dialysate. The chemical imbalances and impurities of the blood are corrected and the blood is then returned to the body. Typically, most patients undergo hemodialysis for three sessions every week. Each session lasts 3 - 4 hours.

When is dialysis needed?

You need dialysis when you develop end stage kidney failure , usually by the time you lose about 85 to 90 percent of your kidney function.

What does dialysis do?

Like healthy kidneys, dialysis keeps your body in balance. Dialysis does the following:

  • removes waste, salt and extra water to prevent them from building up in the body
  • keeps a safe level of certain chemicals in your blood, such as potassium, sodium and bicarbonate
  • helps to control blood pressure
  • When possible, patients should prepare for dialysis before dialysis is absolutely necessary.

It is important to stick to the diet and medicines prescribed by the dialysis staff and your kidney specialist (nephrologist).

The health care provider will make the following assessments before beginning the hemodialysis procedure:
  • Blood pressure
  • Breathing rate
  • Chest assessment
  • Examination of vein access
  • Heart rate
  • Temperature
  • Weight
How the Test Will Feel

Because dialysis takes several hours, it may be tedious. With children, it is especially important to have games, something to read, or other distractions.

Why the Test is Performed

The kidneys function as filters for the blood, removing waste products. They also:
  • Regulate body water
  • Maintain electrolyte balance
  • Ensure that the blood pH remains between 7.35 and 7.45
Dialysis replaces some of the functions for kidneys that aren't working properly. It removes contaminants from the blood that could, and eventually would, lead to death if the kidney is not functioning.

Since dialysis is not a constant process, it cannot monitor body functions as do normal kidneys, but it can eliminate waste products and restore electrolyte and pH levels on an as-needed basis.

Dialysis is most often used for patients who have kidney failure, but it can also quickly remove drugs or poisons in acute situations. This technique can be lifesaving in people with acute or chronic kidney failure.

The immediate risks include:
  • A small bubble of air in the blood that travels to a blood vessel in another part of the body (air embolism)
  • Bleeding from the access site
  • Cramps
  • Dialyzer reaction
  • Electrolyte imbalance
  • Infection
  • Irregular heartbeat or ischemia
  • Low blood pressure (hypotension)
  • Nausea and vomiting
Long-term risks include:
  • Autonomic neuropathy
  • Blood loss leading to iron deficiency
  • Cardiovascular disease
  • Dialysis-associated amyloidosis
  • Dialysis dementia
Take the following precautions if you are using an AVF or AVG:
  • Do not allow anyone to take a blood pressure reading on an arm with the access.
  • Do not use creams or lotions over the access site.
  • Do not wear tight clothing around the access site.
  • Observe the access site after dialysis, watching for swelling, infection, or bleeding.
  • Routinely check the access site for the "thrill," indicating that the AV site is still functioning. (If the thrill disappears, call your health care provider immediately.)
  • When you sleep, avoid placing pressure on an arm with the access (if the graft or fistula clots, you may need a new one).
If you have an external dialysis access, take these additional precautions:
  • Avoid physical activity that might dislodge the access, which could result in excessive bleeding and air entering the circulatory system. (If this happens, call 911 and get immediate medical attention.)
  • Call your health care provider immediately if you have a fever or other sign of infection.
  • If the color in the tubes changes and becomes a dark red, call your health care provider immediately. (The blood may be clotting.)
Will dialysis help cure the kidney disease?

No. Dialysis does some of the work of healthy kidneys, but it does not cure your kidney disease. You will need to have dialysis treatments for your whole life unless you are able to get a kidney transplant.

Do not miss or skip any dialysis sessions.

References

Tolkoff-Rubin N. Treatment of irreversible renal failure. In: Goldman L, Ausiello D, eds. Cecil Textbook of Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 133.

Mitch WE. Chronic kidney disease. In: Goldman L, Ausiello D, eds. Cecil Textbook of Medicine. 23rd ed. Philadelphia, Pa: Saunders Elsevier; 2007: chap 131.


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