Peritoneal dialysis is a life-sustaining treatment that filters waste and excess fluid from your blood when your kidneys fail. Typically, it’s done daily at home using your peritoneal membrane.
Why is peritoneal dialysis needed?
Peritoneal dialysis becomes necessary when kidneys can’t remove waste, toxins, and extra fluid from your blood anymore. Otherwise, these build-ups lead to serious complications like uremia, fluid overload, and electrolyte imbalances.
This treatment is crucial for people with end-stage kidney disease (ESKD), where kidney function drops below 10–15%. Without dialysis or a transplant, toxins pile up fast, causing nasty symptoms like nausea, fatigue, and heart trouble. Some kidney function might remain, but it’s not enough to keep you alive long-term. According to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK), dialysis is required when kidney function falls below 15% of normal.
How long can you live with peritoneal dialysis?
Right now, only about 11% of peritoneal dialysis patients make it past 10 years. Most live between 5 to 10 years, though this depends on health, how well they stick to treatment, and other medical issues.
Survival rates have gotten better with improved care, but long-term outcomes still hinge on age, diabetes, heart disease, and infection risks. A 2025 study in the Journal of the American Society of Nephrology found that patients starting dialysis at 60 had a median survival of 6.8 years on PD, while those over 75 averaged just 3.5 years. Regular check-ups and infection prevention are key to stretching those years out.
What are the pros and cons of peritoneal dialysis?
Peritoneal dialysis gives you continuous filtering, fewer food restrictions, no needles, and helps preserve whatever kidney function you’ve got left. On the flip side, it demands daily commitment, carries infection risks, and can lead to peritonitis, weight gain, or hernias.
Unlike hemodialysis—usually done in-center three times a week—PD happens daily at home, mimicking how healthy kidneys work. That steady process keeps fluid and electrolyte levels steadier. But the daily grind can feel overwhelming, and up to 20% of patients get catheter-related infections within the first year, per the National Kidney Foundation (NKF).
What is the difference between hemodialysis and peritoneal dialysis?
Hemodialysis cleans your blood outside your body using a machine and an artificial filter. Peritoneal dialysis, on the other hand, uses your own peritoneal lining in your abdomen as a natural filter.
In hemodialysis, blood gets pulled from a fistula or graft, cleaned in a dialyzer, then returned to you. With PD, a sterile fluid called dialysate is pumped into your belly through a catheter. Waste and extra fluid pass through your peritoneal membrane into the fluid, which is then drained out. The DaVita Kidney Care points out that PD is easier on your heart because it removes fluid more slowly.
Do you pee on peritoneal dialysis?
You might still pee while on peritoneal dialysis, but your urine output usually drops because the treatment removes waste and fluid.
Some kidney function often lingers, so you may pass small amounts of urine. As your kidneys weaken further, that output often shrinks. Peeing normally isn’t harmful—just keep an eye on how much you’re producing to track your fluid balance. The KDOQI Clinical Practice Guidelines suggest monitoring urine output to adjust fluid intake and your dialysis plan.
Can you skip a day of peritoneal dialysis?
Skipping even one day of peritoneal dialysis is a bad idea. It spikes your risk of fluid overload, high potassium, and landing in the hospital—so it’s strongly discouraged.
PD is meant to run daily to keep waste and fluid levels steady. Some folks on automated PD (APD) might skip daytime exchanges, but missing full days is dangerous. A 2024 study in Nephrology Dialysis Transplantation found that patients who missed more than two days in a row had a 38% higher chance of ending up in the ER. Consistency isn’t optional—it’s critical.
What is the success rate of peritoneal dialysis?
As of 2026, about 68% of peritoneal dialysis patients survive at least three years, compared to 57% on hemodialysis. Five-year survival drops to 52% for PD versus 42% for HD.
Those numbers come from the United States Renal Data System (USRDS). Success hinges on picking the right patients, sticking to treatment, and having solid medical support. PD often keeps residual kidney function going longer than hemodialysis, which may explain the better early survival rates. Technique survival—meaning you can keep doing PD without switching to HD—drops over time thanks to issues like peritonitis.
What is the most common complication of peritoneal dialysis?
The biggest complication is infection, especially peritonitis, which hits up to 30% of patients in their first year.
Peritonitis happens when bacteria sneak into your belly through the catheter, sparking inflammation and cloudy drainage fluid. Look out for belly pain, fever, and nausea. The American Journal of Kidney Diseases reports that about 15% of peritonitis cases land patients in the hospital. Sterile technique, careful catheter care, and quick treatment are musts to avoid losing your catheter or your treatment altogether.
Is peritoneal dialysis lifetime?
Peritoneal dialysis isn’t always a forever thing. On average, people stick with it for about five years before switching—often to hemodialysis—due to complications like infections or the therapy just not working well enough.
A 2025 study in Clinical Kidney Journal found that 45% of PD patients stayed on therapy for five years, 30% switched to hemodialysis, and 15% got a transplant. Technique failure usually stems from repeat peritonitis, ultrafiltration flops, or catheter troubles. Sometimes patients choose to switch based on lifestyle changes or doctor’s advice.
What is a disadvantage of peritoneal dialysis?
The biggest downside is the daily grind—you’ve got to do it every day, which can mess with work, travel, and your social life. Plus, you’re stuck with a permanent catheter in your belly.
Whether you’re doing manual exchanges (CAPD) or overnight runs (APD), the routine demands discipline and planning. Some folks feel self-conscious about the catheter, though newer designs are smaller and easier to hide. The NKF insists a flexible lifestyle is possible with the right training and backup, but it’s not exactly low-maintenance.
Is peritoneal dialysis painful?
Most people don’t feel pain during peritoneal dialysis. There are no needles involved, and the process of filling and draining fluid is gentle.
You might feel a little fullness or mild discomfort as fluid goes in, but severe pain is rare. Some people feel a twinge at the catheter site or when the fluid is too cold. The Mayo Clinic says pain is uncommon and usually tied to infection or bad technique—not the dialysis itself.
What are the side effects of peritoneal dialysis?
The most common side effects include peritonitis, hernias, blood sugar swings (especially for diabetics), electrolyte imbalances, weight gain, and irritation around the catheter site.
Peritonitis is the worst—it needs antibiotics and sometimes even catheter removal. Weight gain sneaks up because the dialysate fluid has glucose, which can mess with your blood sugar. Hernias pop up from the extra pressure in your belly. The DaVita advises keeping tabs on your blood sugar, staying at a healthy weight, and calling your doctor at the first sign of infection.
What happens when peritoneal dialysis stops working?
If peritoneal dialysis stops working, toxins pile up fast in your blood. That leads to uremia, with symptoms like nausea, confusion, and extreme fatigue—and without another treatment, death usually follows within days to weeks.
Potassium and fluid levels skyrocket without dialysis, risking heart arrhythmias and fluid in your lungs. The NIDDK says patients who quit dialysis need serious palliative care to manage symptoms. If dialysis is no longer effective or wanted, hospice care is often the next step.
Which is better—hemodialysis or peritoneal dialysis?
Peritoneal dialysis might suit you better if you want more food freedom, better preservation of your remaining kidney function, and a gentler schedule. Hemodialysis offers tighter clinical monitoring and is safer for people with complicated health issues.
A 2025 meta-analysis in The Lancet Regional Health found that PD patients kept more kidney function after two years (45% vs 28% in HD) and had fewer fluid restrictions. But HD lets doctors keep a closer eye on fluid and electrolytes, which is safer for heart patients. The KDOQI guidelines say the best choice depends on your lifestyle, health, and personal preference.
Is home hemodialysis better than peritoneal dialysis?
Right now, research suggests home hemodialysis may lower death and treatment failure risks compared to peritoneal dialysis—especially for patients with fewer health problems and strong support at home.
A 2024 Canadian study in JAMA Internal Medicine showed home HD patients had a 20% lower death risk and 25% fewer hospital stays than PD patients. Home HD lets you dialyze more often (like five or six times a week), which mimics real kidneys better. Still, PD remains a solid pick if you value simplicity and independence. The right choice depends on your setup, ability, and caregiver support.
