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What is Peritoneal Dialysis?

Peritoneal dialysis is a treatment that uses the lining of the peritoneum inside the abdomen to filter waste, excess fluids, and toxins from the blood. Unlike hemodialysis, which relies on a machine, PD uses a sterile solution called dialysate that is introduced into the abdomen through a catheter. The solution absorbs waste and excess fluids from the blood vessels in the peritoneum, and after a few hours, it is drained away, carrying the waste with it. A nephrologist carefully guides patients through this process to ensure safe and effective treatment.

Types of Dialysis

There are two different modalities of dialysis, Haemodialysis or peritoneal dialysis. In haemodialysis, blood is filtered through a machine outside the body. For peritoneal Dialysis, a cleansing liquid is infused through a catheter into the peritoneal cavity:

Continuous Ambulatory Peritoneal Dialysis (CAPD)

This method is manual and performed by the patient or a caretaker 4-5 times daily and once at night. The patient will fill their abdomen with dialysate, let it stay for a few hours to absorb waste, and then drain it out.

Automated Peritoneal Dialysis (APD)

This is done with the help of a machine (cycler) that performs the exchanges, like putting fluid into the cavity and removing it several times overnight. The patient is free of the fluid during the day time, making it a convenient option for patients.

How Peritoneal Dialysis Works?

Dialysate Infusion

A sterile fluid (dialysate) is introduced into the abdominal cavity through a Peritoneal Dialysis Catheter

Waste Removal

The dialysate absorbs waste products and excess fluids from the blood vessels in the peritoneal lining.

Draining the Fluid

After a set period, the used dialysate, now filled with waste, is drained out of the abdomen and replaced with fresh fluid.

Benefits of Peritoneal Dialysis

Convenience & Flexibility

You can perform PD at home, work, or travel. It's an excellent option for people with busy lives.

Fewer Dietary Restrictions

PD patients have more flexibility with food and fluids due to continuous treatment.

Less Impact on Lifestyle

PD patients often feel more in control and continue daily activities with minimal interruptions.

Kidney Model

Risk & Considerations

  • Infection: Since PD involves a catheter in the abdomen, there is a risk of infection, particularly peritonitis. Proper hygiene and care are essential.
  • Fluid Balance: It’s important to monitor fluid intake and output to avoid overload.
  • Potential for Weight Gain: High glucose in dialysis solution can lead to weight gain.
  • Training and Support: Patients and caregivers must be trained to perform exchanges and care properly.

Lifestyle Considerations

1

Dietary Management

Follow a kidney-friendly diet low in sodium, potassium, and processed foods.

2

Exercise

Maintain regular physical activity to improve overall kidney and heart health.

3

Mental Health

Manage stress and seek emotional support to improve treatment outcomes.

4

Regular Checkups

Routine monitoring helps detect issues early and ensures effective care.

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Everything you need to know about kidney diseases

1What is peritoneal dialysis?
Peritoneal dialysis is a home-based treatment that uses the lining of your abdomen (peritoneum) to filter waste and toxins from your blood.
2Which Dialysis is Best?
There’s no single “best” type — it varies by person. Peritoneal Dialysis (PD) may be best if you: Prefer to perform dialysis at home Have no preference for needles Desire greater freedom and flexibility Travel infrequently or hold a full-time job Wish for less intense treatment that functions more akin to natural kidneys Hemodialysis (HD) may be ideal if: You prefer being treated by nurses in a clinic Find treatment difficult to control on your own Are medically not a strong candidate for PD (e.g., belly infection or surgeries) Both are doing the same thing — cleaning your blood. The best option for you is based on your health, lifestyle, and what you feel comfortable with.
3Is Peritoneal Dialysis Done Daily?
Yes, peritoneal dialysis is typically done daily. There are two basic methods: CAPD (Manual Method): Completed 3–5 times daily, each one lasting about 30–40 minutes. You do it yourself, no need for a machine. APD (Nighttime Machine): Completed during sleep. The machine runs for approximately 8–10 hours at night. Though it’s a daily routine, most people find it easy to incorporate into their lives.
1Who Needs Peritoneal Dialysis?
PD is for individuals whose kidneys no longer function normally and must regularly be treated to rid their blood of waste products. PD is a good match for individuals who: Would like to have dialysis at home Can enjoy flexibility and independence Are generally in stable health without severe complications May not tolerate hemodialysis well (for example, if they have low blood pressure or heart problems) Want to avoid regular trips to a dialysis centre Your doctor will help decide if PD is a good option based on your health and lifestyle.
2How Long is PD Dialysis?
This depends on the type: CAPD (Manual): Each session takes around 30–40 minutes, done 3–5 times a day. APD (With Machine): Reruns overnight as you sleep for roughly 8–10 hours. It’s distributed throughout the day or nighttime, so for some, it feels more relaxed than sitting at a clinic in blocks of time.
3Is PD Better than Hemodialysis?
PD may be better for some, but not necessarily for everyone. PD Might Be Better If You: Prefer doing dialysis from home Dislike needles Have a less rigid schedule Would like to travel or work more conveniently Would have steady health But Hemodialysis Would Be Preferable If You: Can’t care for PD at home Have stomach issues such as infection or scarring Feel safer with trained staff working on your treatment