What is peritoneum? Peritoneum is a thin, semipermeable membrane that keeps the stomach, intestines, liver and other organs in place.
How many methods of peritoneal dialysis are there?
CAPD: Continuous Ambulatory
Peritoneal Dialysis
APD: Automated Peritoneal Dialysis
What do you need to perform peritoneal dialysis? CAPD Catheter, associated connection apparatus, Dialysis solution & Drain bag
What is peritoneal dialysis catheter? The catheter for peritoneal dialysis is a small plastic (silicon) tube that is introduced into the peritoneal cavity by means of simple operation.
What is the function of peritoneal dialysis catheter? The catheter is used to drain PD solution in and out of peritoneum.
How are wastes and excess water eliminated during peritoneal dialysis? The dialysis solution is infused into the peritoneum and when blood passes through the peritoneum, exchange takes place & then it is drained out.
When will CAPD cycles be started? CAPD cycles are started after two weeks after insertion of CAPD catheter
What care must be provided immediately after insertion of catheter? Ensure that the exit site and surgical wound dry. They should not get wet for atleast 10 days after placement.
What is the long term care of the catheter and the exit site? Daily bathing and cleaning of the exit wound Immobilization of the catheter
What does the dialysis exchange involve? An exchange consist of 3 steps
Drain: means removing the solution from the peritoneal cavity by gravity; this process takes approximately 20 minutes
Infuse: means introducing dialysis solution into the peritoneal cavity through a catheter for less than 10 minutes.
Dwell time: period in which the dialysis solution remains inside peritoneal cavity for an average duration of 4 to 6 hours. Exchange is generally repeated every 4-6 hours.
Where we can perform CAPD? You can perform the exchange in your home, at your work place; but these areas must be clean.
What are the guidelines for eating a healthy diet while you are under peritoneal dialysis? Food you should eat MORE of:
Protein
Fiber
Food you should eat less of:
Avoid eating foods rich in phosphorus, potassium and sodium
Watch your intake of salt and fluids
Limit the quantity of sugars and fats.
Are there any complications with CAPD? Yes. Infection (peritonitis) can set in if there is a break in the aseptic technique of performing the exchanges. Other complications like weight gain, increase in blood sugars, triglycerides can occur. Certain patients can have catheter migration & have drainage problems.
Who are the candidates for CAPD? Anyone with end stage renal disease is eligible to undergo CAPD. Some patients choose it for convenience. Some patients need it as they have vascular access problem & cannot undergo HD. Some of them are recommended CAPD as their cardiac status is poor & prone for complications on HD.
Are there any contraindications for CAPD? Yes. Patients who have a congenital defect in the diaphragm cannot undergo CAPD as the fluid instilled into the abdomen will fill the pleural cavity. Patients with active intraabdominal infection or patients who have undergone major intraabdominal surgeries may not be fit candidates for CAPD.
Is CAPD as effective as haemodialysis? Yes. But CAPD has to be performed atleast three exchanges a day to achieve the efficacy of haemodialysis which is recommended thrice weekly.
What is automated peritoneal dialysis? Automated peritoneal dialysis is one where the exchanges are performed usually at night with the help of a machine .Patient is hooked onto the machine at night when he goes to sleep & the exchanges are completed by the time he is awake the next day.
Is training required to perform CAPD? Yes. Patient or if he is unable to do it himself, his close relatives have to be trained to perform CAPD .Patient is usually hospitalized two weeks after the insertion of the catheter. CAPD coordinator trains the patient/relative at the hospital for about a week. Patient is discharged once the coordinator is convinced that the person is capable of performing CAPD on his/her own.
CAPD is a form of dialysis treatment that is performed at home. Treatments can be done as you go about your regular daily activities. You are not restricted by the use of a machine. CAPD allow you to be independent and to perform treatments on a flexible schedule.
With this type of treatment, body waste products and extra fluid are removed inside your peritoneal cavity ( the area in the abdomen around the organs). A soft silastic tube (catheter) is surgically placed into the peritoneal cavity through your abdominal wall. It stays in place unless surgically removed. It is used to drain dialysate in and out of your peritoneal cavity.
Dialysate stays in your peritoneal cavity 24 hours a day except for the short periods when old dialysate is drained out and fresh dialysate is put in. For most patients, the treatment is carried out 4 to 5 times a day, 7 days a week.
CAPD treatment is relatively simple. CAPD treatment is relatively simple. About two quarts of sterile dialysis solution from a plastic bag runs through the plastic connecting tube and catheter into your peritoneal cavity. The dilaysate remains in the peritoneal cavity for about 3-5 hours. Your peritoneal membrane acts as a filter allowing wastes and extra fluid to be drawn out of your blood. The dialysate and wastes are drained out and thrown away. Fresh dialysate is infused, and you go about your normal activities for another 3-4 hours before "exchanging" fluid again. The last exchange of the day stays in overnight allowing you to sleep without interruption.
CAPD may be the choice for you if you:
Live too far from a dialysis center or have no transportation
Do not have a good blood access site for hemodialysis
Prefer the flexibility of independence that CAPD offers
ADVANTAGES OF CAPD
Fewer dietary changes Because CAPD is performed 24 hours a day, waste products are cleared continuously allowing you to eat more freely. However, protein is lost in each exchange which means that you must eat a high protein diet to make up for those losses.
Easier control of fluid balance. Fluid balance is maintained by changing the strength of the dialysis solution. The solutions that are higher in sugar pull out more fluid. You may be asked to limit salt or fluid intake to maintain fluid balance.
Blood chemistry values are more steady. Waste products are removed at the same time they are being generated.
Less anemia ( a higher blood count). Blood is not circulated outside the body though a dialyzer, so there is little or no chance of blood loss. Since blood chemistries are steady, the red blood cells may also live longer.
A sense of freedom. One of the most important advantages of CAPD is the freedom that you are able to enjoy. You can do exchanges or treatments almost anywhere. You dialyze while going about your normal activities and do not have to rely on a machine for treatments.