Peritoneal dialysis (PD) is a dialysis treatment that uses the thin membrane, called the peritoneum, that lines the abdomen to perform dialysis treatments. During treatments, a fluid called dialysate is put into the abdomen through a small, flexible tube called a PD catheter.
The dialysate pulls waste and extra fluid from the blood into the peritoneal cavity. The dialysate remains in the abdomen for a specified amount of time before it is drained and replaced with fresh dialysate. When the dialysate is drained, the wastes and extra fluids are also drained, and fresh dialysate is instilled to clean the blood. This filling, dwelling and draining process is called an exchange. The fill and drain phases of the exchanges can be done manually or with a machine called a cycler.
One of the first tasks your healthcare team will complete when you start PD is an evaluation of your home to help ensure that your general surroundings and treatment area allow you to care for yourself safely.
Before you go home, you will be thoroughly trained at your local dialysis center to perform all aspects of your care safely. Your PD nurse will teach you how to perform your PD treatments and will go over subjects such as preventing infections, exit site care, foods to eat for a healthy PD diet and fluid control.
You will be taught how to document your daily treatments including your vital signs, your weight, the number of exchanges performed, the dialysis solution used and the amount of fluid weight lost. If you are on automated PD, a data card can be installed in the cycler and treatment information will be downloaded automatically.
Your PD catheter is your lifeline. Daily catheter exit site care is imperative for your well being. As you clean the site, you will learn to look for signs of infection such as redness, swelling, tenderness or drainage and report any abnormal findings to your home dialysis care team.
A PD treatment consists of three parts: the drain, fill and dwell phase. You will learn how to recognize and deal with any mechanical problems that can occur during these phases. In addition, you should assess your drained dialysate for cloudiness or the presence of blood. Cloudiness together with abdominal pain, fever and chills could be a sign of peritonitis. Blood could be present after a trauma to the abdomen or in female patients who had a recent menstrual period. Your training will also include other possible treatment complications, how to recognize associated symptoms and what to do about them.
The provider of your PD supplies will inform your PD nurse and healthcare team of the shipments you receive. This record allows your healthcare team to verify that you are receiving the correct type and amount of supplies needed to perform your treatments as prescribed.
Your home dialysis care team will monitor you and your treatments during your monthly clinic visits through a review of your treatment records and regular lab tests. A thorough assessment and review of the medicines you take will give your healthcare team a picture of your physical condition and healthcare needs. You will also have the opportunity to discuss any health concerns or ask questions during your monthly check-ups.
The peritoneal equilibration test (PET) gives your doctor information about your peritoneal membrane and how quickly fluid, waste products and other dissolved particles are transported across the membrane. Your doctor uses the results to tailor your dialysis prescription to your personal needs. A lab test called Kt/V is also used to examine whether you receive enough dialysis to keep you healthy.
Other lab tests measure your red blood cell count and the amount of iron in your body to assess for anemia. Nutritional markers such as albumin tell the dietitian whether your diet is adequate or needs some tweaking. Calcium, phosphorus and parathyroid hormone are important indicators for bone health. Potassium is a mineral that is important for healthy muscle and heart function.
Once you choose PD as your treatment option for kidney failure, you are responsible for your dialysis treatments at home, but you are not on your own. In addition to your regularly scheduled clinic visits, your home dialysis care team is just a phone call away to assist you at any time, day or night.
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