When peritoneal dialysis stops working effectively, waste products and excess fluid begin building up in your body, producing symptoms that worsen over time. The path forward typically involves switching to hemodialysis, pursuing a kidney transplant, or choosing conservative management focused on comfort and quality of life. About 39% of peritoneal dialysis patients in the U.S. switch to hemodialysis within three years of starting treatment, so this is a common transition with well-established options.
Why Peritoneal Dialysis Stops Working
The peritoneal membrane, the tissue lining your abdomen that filters waste during dialysis, changes over time. Years of exposure to glucose-based dialysis fluid triggers three overlapping processes: chronic inflammation, growth of new blood vessels in the membrane, and scarring (fibrosis). These changes thicken the membrane and reduce its ability to pull fluid out of your blood, a problem called ultrafiltration failure. Researchers have identified a specific signaling pathway in the membrane’s surface cells that glucose activates directly, which drives this scarring process forward.
The timeline varies. One study found the median technique survival time for peritoneal dialysis was 2.7 years, though some patients stay on it much longer. A single-center study of long-term patients reported a mean duration of 10.4 years on peritoneal dialysis. How quickly the membrane deteriorates depends on factors like how often you’ve had peritonitis (infection of the peritoneal lining), the type of dialysis solutions used, and your individual biology.
Signs That Clearance Is Declining
When peritoneal dialysis can no longer remove enough waste from your blood, you develop symptoms of uremia, the toxic buildup of substances your kidneys normally filter out. These symptoms often creep in gradually, making them easy to dismiss at first.
Early signs include persistent nausea, loss of appetite, a metallic or unpleasant taste in your mouth, increasing fatigue, and muscle cramps. You may notice your thinking feels foggy, or family members might point out that you seem more forgetful or confused. Itching that doesn’t respond to lotions is another hallmark. As waste levels climb higher, symptoms can progress to vomiting, weight loss, restless legs, headaches, and difficulty sleeping. In severe cases, confusion can deepen into drowsiness or even seizures.
Fluid-related warning signs are equally important. If your dialysis is no longer pulling enough fluid from your body, you’ll notice swelling in your feet, ankles, and face. Blood pressure becomes harder to control. Fluid can back up into your lungs, causing shortness of breath that worsens when you lie flat. Over time, the extra fluid forces your heart to work harder, which can change your heart rate, weaken the heart muscle, and increase the heart’s size.
Peritonitis and Acute Failure
Sometimes peritoneal dialysis fails not from gradual membrane decline but from infection. Peritonitis, an infection of the peritoneal lining, is one of the most common reasons patients must stop peritoneal dialysis abruptly. Warning signs include belly pain or tenderness, fever, nausea, and critically, cloudy dialysis fluid or fluid containing white flecks or strands. If your dialysis fluid looks or smells unusual, or the skin around your catheter changes color or becomes painful, that needs immediate medical attention. Repeated or severe peritonitis episodes can permanently damage the membrane, making it impossible to continue.
Encapsulating Peritoneal Sclerosis
A rare but serious complication of long-term peritoneal dialysis is encapsulating peritoneal sclerosis, which affects up to 3.3% of patients within five years. In this condition, thick scar tissue forms around the small intestine like a cocoon, progressively trapping the bowel and causing obstruction.
It typically begins with vague symptoms: nausea, vomiting, abdominal pain, diarrhea, and weight loss. Some patients notice blood-tinged dialysis fluid. As the condition advances, it can cause severe abdominal pain, intractable vomiting, malnutrition, and complete bowel obstruction requiring surgery. Risk factors include longer time on peritoneal dialysis, history of peritonitis (especially certain bacterial and fungal infections), and use of high-glucose dialysis solutions. There are no blood tests to diagnose it, so imaging is needed to confirm it.
Switching to Hemodialysis
The most common next step when peritoneal dialysis fails is transitioning to hemodialysis, which filters your blood through a machine rather than through your abdominal membrane. This switch requires a different type of vascular access.
Ideally, you would have an arteriovenous fistula or graft created in your arm while you’re still on peritoneal dialysis, once your care team sees clearance declining. A fistula connects an artery to a vein, allowing the vein to enlarge and strengthen enough to handle repeated needle access. This maturation process takes weeks to months. If the switch happens urgently, a temporary catheter is placed in a large vein in your neck or chest to start hemodialysis right away. These temporary catheters carry a higher risk of infection and are associated with worse outcomes, which is why planning ahead matters.
The transition itself carries risk. Research published in Kidney International Reports notes that most patients transferring from peritoneal dialysis to hemodialysis likely start with these higher-risk catheters rather than a mature fistula. The early period after switching is a vulnerable time, and close monitoring during those first weeks helps catch complications quickly.
Kidney Transplant as an Option
A kidney transplant is the other major treatment pathway and offers the best long-term outcomes for eligible patients. If you’re already on the transplant waiting list, your wait time accrues regardless of which type of dialysis you’re on. Kidneys from deceased donors are matched based on several factors: blood and tissue compatibility, how long you’ve been waiting, and the distance between the donor and transplant hospitals. The system also prioritizes giving the longest-lasting kidneys to the candidates expected to need them the longest.
Living donor transplants, where a healthy person donates one kidney, bypass much of the waiting list process and generally produce better outcomes. If a transplant is realistic for your situation, your care team will typically discuss this well before peritoneal dialysis reaches the point of failure.
Conservative Management Without Dialysis
Some patients, particularly those who are older or have multiple serious health conditions, choose not to transition to hemodialysis. Conservative management focuses on quality of life and symptom control rather than replacing kidney function. This is a legitimate medical pathway with its own structured care plan, not simply “doing nothing.”
A care team that typically includes a kidney specialist, nurse, dietitian, social worker, and pharmacist works with you to preserve whatever kidney function remains for as long as possible. They manage symptoms like nausea, poor appetite, anemia, and the emotional weight of living with advanced kidney disease. As waste products accumulate in the blood over time, appetite naturally declines and alertness gradually decreases. The care team adjusts medications and support to keep you comfortable through these changes.
As the end of life approaches, many patients transition to hospice care, which provides pain and symptom relief along with emotional and spiritual support for both the patient and family caregivers. If you’re currently on dialysis and decide to stop, your medical team will shift your care to a comfort-focused approach.
Planning Ahead Makes the Difference
The most important thing to understand is that peritoneal dialysis failure rarely happens overnight. Your care team monitors your clearance numbers, fluid removal, and membrane function at regular intervals. A gradual decline in these measures is the signal to start preparing, whether that means creating vascular access for hemodialysis, activating on the transplant list, or having honest conversations about your goals for care. The patients who fare best during this transition are those whose teams anticipated the change and had a plan in place before the situation became urgent.