Patients with advanced chronic kidney disease (CKD) or severe acute kidney injury (AKI) may require dialysis to remove waste and excess fluid from the blood. While many people receive dialysis at a treatment center, some may qualify for home dialysis, including peritoneal dialysis (PD) or home hemodialysis (HHD).
Understanding how these dialysis options work can help patients and families prepare for the next stage of kidney care.
What Dialysis Does for the Body
When kidney function declines significantly, dialysis helps remove waste, balance electrolytes, manage excess fluid, and support blood pressure control. Dialysis does not cure kidney disease, but it can help manage symptoms and support health when the kidneys can no longer perform these functions well.
Home Dialysis Options at a Glance
Patients with kidney failure may receive dialysis in several ways depending on their health, lifestyle, treatment goals, and support system. Some people receive dialysis at a treatment center, while others may qualify for home dialysis.
Each option has benefits, responsibilities, and limitations. A nephrologist can help determine which approach may be most appropriate based on your kidney function, symptoms, medical history, lifestyle, and ability to complete training.
Who May Be a Candidate for Home Dialysis
Candidates for home dialysis may include patients who:
- Have advanced CKD or kidney failure
- Are medically stable enough for home treatment
- Can complete training with the dialysis care team
- Are able to follow treatment instructions
- Have a clean, safe space to store supplies and perform treatment
- Have caregiver support when needed
- Are approved by a nephrologist for home dialysis
A full evaluation is needed before starting home dialysis. Your nephrologist can help determine whether peritoneal dialysis, home hemodialysis, in-center hemodialysis, or another option is most appropriate.
Considering Home Dialysis?
If you have advanced kidney disease, a nephrologist can help you understand whether home dialysis may be appropriate and which option best fits your medical needs, lifestyle, and support system.
What Is Home Dialysis?
Home dialysis refers to dialysis treatments performed outside of a dialysis center after training with a dialysis care team. Depending on the treatment type, patients may perform dialysis independently or with help from a caregiver.
The two main types are peritoneal dialysis, which uses the lining of the abdomen to filter waste and fluid, and home hemodialysis, which uses a dialysis machine to filter blood at home.
Home dialysis may offer more flexibility and independence for some patients, but it also requires training, treatment responsibility, space for supplies, and careful infection-prevention practices.
Peritoneal Dialysis vs Home Hemodialysis
Peritoneal dialysis and home hemodialysis are both home dialysis options, but they work differently.
- Peritoneal dialysis uses a catheter placed in the abdomen and dialysis fluid to remove waste and excess fluid through the peritoneal membrane. It is usually performed daily and may be done manually during the day or overnight with a cycler machine.
- Home hemodialysis uses a dialysis machine and vascular access to remove blood from the body, filter it through a dialyzer, and return cleaned blood to the body. Treatment schedules vary and may include several sessions per week, shorter daily treatments, or overnight dialysis, depending on the care plan.
Your nephrologist can help compare these options and explain which type of dialysis may better fit your health needs, lifestyle, home environment, and support system.
When Dialysis May Be Needed
Dialysis may be recommended when the kidneys are no longer able to filter waste and fluids effectively.
Common situations where dialysis may be needed include:
- Advanced chronic kidney disease, usually stage 5 or late stage 4 with symptoms
- Kidney failure
- Severe acute kidney injury (AKI)
Symptoms of kidney failure may include:
- Swelling in the legs, ankles, or abdomen
- Persistent fatigue or weakness
- Nausea or vomiting
- Fluid retention
- Shortness of breath
What Is Peritoneal Dialysis?
Peritoneal dialysis is a type of home dialysis that uses the lining inside the abdomen, called the peritoneal membrane, as a natural filter. A soft catheter placed in the abdomen allows dialysis fluid to move in and out of the abdominal cavity.
As the fluid sits in the abdomen, waste products and excess fluid move from the blood into the dialysis solution. The used fluid is then drained and replaced with fresh solution. This process is called an exchange.
Peritoneal dialysis is usually performed daily and may be done manually during the day or automatically overnight with a cycler machine.
How Peritoneal Dialysis Works
Peritoneal dialysis typically involves four main steps:
- Fill: Dialysis fluid enters the abdomen through the catheter.
- Dwell: The fluid stays in the abdomen while the peritoneal membrane filters waste and excess fluid from the blood.
- Drain: Used dialysis fluid drains out of the abdomen.
- Repeat: Fresh dialysis solution is used for the next exchange.
Each exchange helps remove waste and fluid gradually throughout the day or night.
Types of Peritoneal Dialysis
Continuous Ambulatory Peritoneal Dialysis
Continuous ambulatory peritoneal dialysis, or CAPD, is performed manually during the day. It does not require a machine.
CAPD usually involves several exchanges each day. Patients perform exchanges at scheduled times based on their dialysis prescription and care plan.
Automated Peritoneal Dialysis
Automated peritoneal dialysis, or APD, uses a cycler machine to perform exchanges, usually overnight while the patient sleeps.
A common form of APD is continuous cycling peritoneal dialysis, or CCPD. With CCPD, the cycler performs several exchanges overnight, and dialysis fluid may remain in the abdomen during the day between treatments.
Peritoneal Dialysis Catheter Placement
Before starting peritoneal dialysis, a catheter must be placed in the abdomen. This is usually done through a minor surgical procedure.
The process may include:
- Placement of a soft, flexible catheter
- A healing period before dialysis begins
- Training with dialysis nurses
- Education on catheter care and infection prevention
Proper catheter care is important to reduce infection risk and maintain effective dialysis treatments.
Common Experiences With Peritoneal Dialysis
Each patient’s experience with peritoneal dialysis can vary. Some people notice abdominal fullness, pressure, or bloating when dialysis fluid is in the abdomen.
Why Peritoneal Dialysis May Cause Bloating or Fullness
Mild bloating or fullness can happen because dialysis fluid temporarily fills the abdominal cavity during treatment. Patients may notice:
- A temporary increase in waist size
- Mild abdominal pressure
- A feeling of fullness
After the dialysis fluid drains, the abdomen often feels closer to its usual size.
Tips for Managing Peritoneal Dialysis Bloating
Patients may be able to reduce discomfort by:
- Wearing loose or comfortable clothing
- Following the dialysis prescription closely
- Discussing fluid volumes with the dialysis care team
- Using overnight exchanges when appropriate
- Staying physically active as recommended
If bloating, pain, or discomfort continues, your nephrology team can review your treatment settings and check for possible complications.
Possible Risks of Peritoneal Dialysis
Although many patients tolerate peritoneal dialysis well, complications can occur. Possible risks include:
- Peritonitis, or infection of the abdominal lining
- Catheter infections
- Hernias
- Abdominal discomfort or bloating
- Inadequate dialysis in some patients
- Weight gain related to glucose-based dialysis fluid
Dialysis teams provide training and infection-prevention education to help reduce these risks.
Home Dialysis vs In-Center Dialysis
Each dialysis option has advantages and limitations, and a nephrology care team can help determine which approach is most appropriate for each patient.
Advantages of Home Dialysis
Home dialysis may offer several benefits for some patients, including:
- Flexible treatment schedules
- Fewer trips to dialysis centers
- Overnight dialysis options
- Greater independence and control
Many patients appreciate the ability to integrate dialysis treatments into their daily routines.
Potential Challenges of Home Dialysis
Despite its advantages, home dialysis may also present challenges.
Possible challenges include:
- Training requirements
- Risk of infection
- Catheter care responsibilities
- Equipment storage
- Abdominal discomfort with peritoneal dialysis
The best dialysis option depends on your medical condition, lifestyle, support system, and comfort with managing treatment at home. A nephrology team can help determine whether home dialysis or in-center dialysis is the safest and most appropriate option.
What Daily Life Can Look Like on Home Dialysis
Starting dialysis can feel overwhelming, but many patients continue to work, travel, and maintain active lives while receiving home dialysis.
Patients often ask about:
- Managing work schedules
- Traveling with dialysis equipment
- Diet and fluid restrictions
- Exercise and activity levels
With training and support from a nephrology team, many people successfully integrate dialysis treatments into their everyday routines.
Diet and Fluid Changes on Dialysis
Dialysis patients often need to adjust their diet and fluid intake to maintain healthy electrolyte and fluid balance.
Common dietary considerations include:
- Limiting sodium to control blood pressure and fluid retention
- Managing potassium levels
- Monitoring phosphorus intake
- Maintaining adequate protein intake to replace protein lost during dialysis
Fluid intake may also need to be monitored depending on the type of dialysis and remaining kidney function.
A nephrologist or renal dietitian can help create an individualized diet plan that supports dialysis treatment and overall health.
How Long Can Someone Live on Home Dialysis?
Many people live for years while receiving dialysis treatment. Survival depends on several factors, including overall health, age, underlying kidney disease, and how well dialysis treatments are managed.
Some patients remain on dialysis long term, while others may eventually receive a kidney transplant. For eligible patients, kidney transplantation often offers improved long-term survival and quality of life compared with dialysis alone.
Working closely with a nephrology team, maintaining a healthy lifestyle, and following dialysis instructions can help improve quality of life and long-term outcomes.
FAQs
Home dialysis is dialysis treatment performed outside of a dialysis center after training with a dialysis care team. The two main types are peritoneal dialysis and home hemodialysis. Some patients perform treatment independently, while others may need help from a caregiver.
Peritoneal dialysis uses the lining of the abdomen to filter waste and excess fluid from the blood. Home hemodialysis uses a dialysis machine to filter blood through a vascular access. Both can be done at home, but they use different methods, schedules, equipment, and training requirements.
A good candidate for home peritoneal dialysis may be someone with kidney failure who can safely complete treatment at home, follow dialysis instructions, care for the catheter, store supplies, and attend regular follow-up visits. Some patients may also need caregiver support. A nephrologist must evaluate your health, home situation, and treatment needs before recommending peritoneal dialysis.
Yes. Peritoneal dialysis is usually performed at home after training with a dialysis care team. It may be done manually during the day or with a cycler machine overnight, depending on the patient’s prescription and care plan.
Continuous ambulatory peritoneal dialysis, or CAPD, is a type of peritoneal dialysis that is done manually and does not require a machine. Automated peritoneal dialysis uses a cycler machine, usually overnight.
Possible disadvantages of home dialysis include training requirements, infection risk, equipment and supply storage, caregiver involvement for some patients, and the responsibility of managing treatments at home. Peritoneal dialysis may also cause bloating, catheter-related concerns, or abdominal discomfort in some patients.
When to Talk to a Nephrologist About Dialysis
Patients should speak with a kidney specialist if they experience:
- Worsening kidney function
- Swelling or fluid buildup
- Persistent fatigue
- Abnormal kidney test results
Early discussions with a nephrologist can help patients plan dialysis options and prepare for treatment if needed.
Talk to a Nephrologist About Home Dialysis Options
If you have advanced kidney disease or symptoms of kidney failure, a nephrologist can help you understand your dialysis options, including peritoneal dialysis, home hemodialysis, and in-center dialysis.
Schedule a consultation to discuss which dialysis approach may fit your health, lifestyle, home support, and care needs.
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