PERITONEAL DIALYSIS

 

How Peritoneal Dialysis Works

A soft plastic tube called a catheter is placed into your belly during a minor surgery. Through this catheter, a sterile cleansing fluid called dialysate is gently run into your abdomen, where it sits (or “dwells”) and pulls wastes and extra fluid from tiny blood vessels in your peritoneal lining.

After the dwell time, the used fluid—which now contains waste products—is drained out through the same catheter and replaced with fresh dialysate. This cycle of fill, dwell, and drain is what cleans your blood and works more continuously, in a way that more closely mimics how healthy kidneys work all day long.

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Types of Peritoneal Dialysis: CAPD and APD

There are two main types of peritoneal dialysis, and both use the same basic process of exchanges with dialysate.

• Continuous Ambulatory Peritoneal Dialysis (CAPD):
  You do exchanges by hand during the day, without a machine. You hang a bag of dialysate, let about two quarts of fluid flow into your belly by gravity, disconnect, and go about your normal activities while the fluid dwells. After a few hours, you drain the used fluid into an empty bag and replace it with fresh fluid—usually 3–5 times in 24 hours, with each exchange taking about 30–40 minutes.

• Automated Peritoneal Dialysis (APD):
  A machine called a cycler does the exchanges for you, usually at night while you sleep. The cycler fills and drains your belly several times through the night, so you wake up with your treatment already done.​

Your doctor and dialysis team will help you decide which type fits best with your health, home situation, and daily routine.

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Pros and Cons of Peritoneal Dialysis

Peritoneal dialysis has benefits that make it a good option for many people:

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• More continuous fluid removal can be gentler on your heart and blood vessels and may make it easier to control extra fluid.

• Many people can eat a more flexible diet and may need fewer blood pressure and fluid pills.

• You can usually continue working or going to school more easily, because treatments can be built around your schedule.

• Travel is often simpler, since supplies can be shipped ahead and treatments are done wherever you have a clean space.​

However, peritoneal dialysis is not right for everyone:

• People with a very large belly (morbid obesity) or multiple prior abdominal surgeries may have trouble with PD.

• There is a risk of peritonitis, an infection of the belly lining, if proper sterile technique is not followed—though this can be minimized with good training and precautions.

• PD is typically a daily treatment, which requires commitment and careful attention to each step, or help from a trained partner.

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Training, Support, and Payment

If you choose peritoneal dialysis, you and (if needed) a care partner will receive hands-on training to learn every step of the process, how to keep things sterile, how to store supplies, and what warning signs of infection to watch for. Your kidney team remains available for questions, troubleshooting, and regular check-ins to monitor labs, blood pressure, and how you are feeling.

Like other forms of dialysis, peritoneal dialysis is expensive, but in the United States most patients have the majority of costs covered. Federal programs typically pay about 80 percent of dialysis charges, with private insurance or state medical assistance helping cover the rest.

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How Kidney Konnect Can Help You Decide

Choosing between hemodialysis and peritoneal dialysis is personal and can feel overwhelming. Kidney Konnect is here to help you:

• Understand, in plain language, how CAPD and APD work day to day.

• Think through whether at-home, more flexible treatment fits your lifestyle, work, and family responsibilities.

• Prepare questions for your nephrologist about infection risks, training, supplies, and whether PD is safe for your body.

If you are facing kidney failure and wondering whether peritoneal dialysis could be an option, Kidney Konnect can walk with you as you explore your choices and build a treatment plan that supports your life, not just your lab numbers.