Peritoneal dialysis – Mayo Clinic

October 30, 2020 0 Comments


Peritoneal dialysis (per-ih-toe-NEE-ul die-AL-uh-sis) is a approach to take away waste merchandise out of your blood when your kidneys cannot adequately do the job any longer. This process filters the blood another way than does the extra frequent blood-filtering process known as hemodialysis.

Throughout peritoneal dialysis, a cleaning fluid flows by means of a tube (catheter) into a part of your stomach. The liner of your stomach (peritoneum) acts as a filter and removes waste merchandise out of your blood. After a set time frame, the fluid with the filtered waste merchandise flows out of your stomach and is discarded.

These remedies will be finished at residence, at work or whereas touring. However peritoneal dialysis is not an possibility for everybody with kidney failure. You want handbook dexterity and the flexibility to look after your self at residence, otherwise you want a dependable caregiver.

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Why it is finished

You want dialysis in case your kidneys now not operate nicely sufficient. Kidney harm usually progresses over various years because of long-term circumstances, reminiscent of:

  • Diabetes
  • Hypertension
  • Kidney irritation (glomerulonephritis)
  • A number of cysts within the kidneys (polycystic kidney illness)

In hemodialysis, blood is faraway from the physique, filtered by means of a machine after which the filtered blood is returned to the physique. Hemodialysis is often finished in a well being care setting, reminiscent of a dialysis middle or hospital, although it may generally be finished at residence.

Though each varieties of dialysis can successfully filter your blood, the advantages of peritoneal dialysis in contrast with hemodialysis embrace:

  • Higher way of life flexibility and independence. These will be particularly necessary for those who work, journey or stay removed from a hemodialysis middle.
  • A much less restricted weight loss program. Peritoneal dialysis is finished extra repeatedly than hemodialysis, leading to much less accumulation of potassium, sodium and fluid. This lets you have a extra versatile weight loss program than you might have on hemodialysis.
  • Longer lasting residual kidney operate. Individuals who use peritoneal dialysis would possibly retain kidney operate barely longer than individuals who use hemodialysis.

Speak together with your physician about which sort of dialysis is likely to be finest for you. Components to think about embrace:

  • Your kidney operate
  • Your general well being
  • Your private preferences
  • Your property scenario
  • Your way of life

Peritoneal dialysis stands out as the higher possibility for those who:

  • Cannot tolerate the speedy modifications of fluid steadiness related to hemodialysis
  • Need to decrease the disruption of your day by day actions
  • Need to work or journey extra simply
  • Have some residual kidney operate

Peritoneal dialysis won’t work you probably have:

  • In depth surgical scars in your stomach
  • A big space of weakened belly muscle (hernia)
  • Restricted capacity to look after your self, or an absence of caregiving help
  • Inflammatory bowel illness or frequent bouts of diverticulitis

It is also possible that individuals utilizing peritoneal dialysis will finally have a decline in kidney operate that requires hemodialysis or a kidney transplant.


Issues of peritoneal dialysis can embrace:

  • Infections. An an infection of the belly lining (peritonitis) is a typical complication of peritoneal dialysis. An an infection may develop on the web site the place the catheter is inserted to hold the cleaning fluid (dialysate) into and out of your stomach. The danger of an infection is bigger if the individual doing the dialysis is not adequately educated.
  • Weight achieve. The dialysate comprises sugar (dextrose). Absorbing a few of the dialysate would possibly trigger you to soak up lots of of additional energy day by day, resulting in weight achieve. The additional energy may trigger excessive blood sugar, particularly you probably have diabetes.
  • Hernia. Holding fluid in your stomach for lengthy durations could pressure your muscle tissue.
  • Insufficient dialysis. Peritoneal dialysis can develop into ineffective after a number of years. You would possibly want to change to hemodialysis.

You probably have peritoneal dialysis, you may have to keep away from:

  • Sure prescription and over-the-counter drugs that may harm your kidneys, together with nonsteroidal anti-inflammatory medicine.
  • Soaking in a shower or sizzling tub, or swimming in a lake, pond, river or nonchlorinated pool — which will increase the danger of an infection. Showers and swimming in a chlorinated pool are usually acceptable.

The way you put together

You may want an operation to insert the catheter that carries the dialysate out and in of your stomach. The insertion is likely to be finished beneath native or basic anesthesia. The tube is often inserted close to your bellybutton.

After the tube is inserted, your physician will in all probability advocate ready as much as a month earlier than beginning peritoneal dialysis remedies to present the catheter web site time to heal.

You may additionally obtain coaching on use the peritoneal dialysis gear.

What you may anticipate

Throughout peritoneal dialysis:

  • The dialysate flows into your stomach and stays there for a prescribed time frame (dwell time) — often 4 to 6 hours
  • Dextrose within the dialysate helps filter waste, chemical substances and additional fluid in your blood from tiny blood vessels within the lining of your belly cavity
  • When the dwell time is over, the answer — together with waste merchandise drawn out of your blood — drains right into a sterile assortment bag

The method of filling after which draining your stomach known as an alternate. Totally different strategies of peritoneal dialysis have completely different schedules of alternate. The 2 foremost schedules are:

  • Steady ambulatory peritoneal dialysis (CAPD)
  • Steady biking peritoneal dialysis (CCPD)

Steady ambulatory peritoneal dialysis (CAPD)

You fill your stomach with dialysate, let it stay there for a prescribed dwell time, then drain the fluid. Gravity strikes the fluid by means of the catheter and into and out of your stomach.

With CAPD:

  • You might want three to 5 exchanges in the course of the day and one with an extended dwell time whilst you sleep
  • You are able to do the exchanges at residence, work or any clear place
  • You are free to go about your regular actions whereas the dialysate dwells in your stomach

Steady biking peritoneal dialysis (CCPD)

Also referred to as automated peritoneal dialysis (APD), this methodology makes use of a machine (automated cycler) that performs a number of exchanges at night time whilst you sleep. The cycler mechanically fills your stomach with dialysate, permits it to dwell there after which drains it to a sterile bag that you just empty within the morning.

With CCPD:

  • You will need to stay connected to the machine for about 10 to 12 hours at night time.
  • You are not linked to the machine in the course of the day. However within the morning you start one alternate with a dwell time that lasts all the day.
  • You may need a decrease threat of peritonitis since you join and disconnect to the dialysis gear much less ceaselessly than you do with CAPD.

To find out the strategy of alternate that is finest for you, your physician will take into account your medical situation, way of life and private preferences. Your physician would possibly recommend sure modifications to individualize your program.


Many elements have an effect on how nicely peritoneal dialysis works in eradicating wastes and additional fluid out of your blood. These elements embrace:

  • Your dimension
  • How shortly your peritoneum filters waste
  • How a lot dialysis answer you utilize
  • The variety of day by day exchanges
  • Size of dwell instances
  • The focus of sugar within the dialysis answer

To test in case your dialysis is eradicating sufficient waste merchandise, your physician is more likely to advocate assessments, reminiscent of:

  • Peritoneal equilibration take a look at (PET). This take a look at compares samples of your blood and your dialysis answer throughout an alternate. The outcomes point out whether or not waste toxins move shortly or slowly out of your blood into the dialysate. That data helps decide whether or not your dialysis could be improved if the answer stayed in your stomach for a shorter or longer time.
  • Clearance take a look at. A blood pattern and a pattern of used dialysis answer are analyzed to find out how a lot of a sure waste product (urea) is being eliminated out of your blood throughout dialysis. If you happen to nonetheless produce urine, your physician might also take a urine pattern to measure its urea focus.

If the take a look at outcomes present that your dialysis schedule shouldn’t be eradicating sufficient wastes, your physician would possibly change your dialysis routine to:

  • Improve the variety of exchanges
  • Improve the quantity of dialysate you utilize for every alternate
  • Use a dialysate with a better focus of dextrose

You’ll be able to enhance your dialysis outcomes and your general well being by consuming the precise meals, together with meals low in sodium and phosphorus. A dietitian can assist you develop an individualized meal plan. Your weight loss program can be primarily based in your weight, your private preferences, and your remaining kidney operate and different medical circumstances, reminiscent of diabetes or hypertension.

Taking your drugs as prescribed is also necessary for getting the absolute best outcomes. Whereas receiving peritoneal dialysis, you may possible want varied drugs to regulate your blood strain, stimulate manufacturing of crimson blood cells, management the degrees of sure vitamins in your blood and stop the buildup of phosphorus in your blood.

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