Dialysis is a form of kidney replacement therapy that helps perform some of the functions normally carried out by healthy kidneys.
Healthy kidneys continuously remove waste products and excess fluid from the blood while helping maintain appropriate levels of electrolytes and acid-base balance. When kidney function becomes severely impaired, waste, fluid and certain electrolytes can accumulate in the body.
Dialysis can help remove these substances when the kidneys are unable to do so adequately.
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized evaluation and medical management for patients who may require dialysis or are already receiving kidney replacement therapy.
When Is Dialysis Needed?
Dialysis is not automatically required whenever kidney function is reduced.
The decision depends on the overall clinical picture rather than a single creatinine or eGFR value.
Dialysis may be considered when severe kidney dysfunction leads to problems such as:
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Significant fluid overload
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Certain severe electrolyte abnormalities
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Severe acid-base disturbances
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Symptoms caused by accumulation of waste products
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Certain complications that cannot be adequately controlled with medical treatment
In acute kidney injury, dialysis may sometimes be temporary while the kidneys recover.
In advanced chronic kidney disease, dialysis may become a longer-term treatment if kidney function is no longer sufficient to maintain the body's needs.
What Does Dialysis Do?
Dialysis can help with several functions that become impaired when kidney function is severely reduced.
It can help:
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Remove waste products from the blood
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Remove excess fluid
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Help control potassium and other electrolytes
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Correct certain acid-base abnormalities
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Reduce symptoms associated with severe kidney failure
However, dialysis does not reproduce every function of healthy kidneys.
This is why patients receiving dialysis continue to require medical monitoring, medicines and individualized dietary and fluid guidance.
Main Types of Dialysis
There are two major forms of dialysis:
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Hemodialysis
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Peritoneal dialysis
The appropriate option depends on the patient's medical condition, lifestyle, home circumstances, available support and clinical suitability.
Hemodialysis
Hemodialysis uses a dialysis machine and a specialized filter called a dialyzer to clean the blood.
During treatment, blood travels from the body through the dialysis circuit, passes through the dialyzer and then returns to the patient.
The dialyzer helps remove:
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Waste products
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Excess fluid
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Certain electrolytes
The frequency and duration of treatments are individualized according to the patient's needs.
What Is Dialysis Access?
For ongoing hemodialysis, reliable vascular access is required.
Common types include:
Arteriovenous Fistula
An AV fistula connects an artery and vein, usually in the arm. It is often preferred for long-term hemodialysis when feasible because of its durability and lower infection risk compared with some catheter-based options.
Arteriovenous Graft
A graft uses a synthetic or biological material to connect an artery and vein when a fistula is not suitable.
Dialysis Catheter
A catheter can provide access to the bloodstream, particularly when dialysis needs to begin urgently or while permanent access is being established.
Catheters can carry higher risks of infection and other complications, so access planning is important.
Peritoneal Dialysis
Peritoneal dialysis uses the lining of the abdomen, known as the peritoneum, as a natural filtering membrane.
Dialysis solution is introduced into the abdominal cavity through a catheter. Waste products and excess fluid move into the solution, which is then drained.
There are different approaches to peritoneal dialysis, including:
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Continuous ambulatory peritoneal dialysis
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Automated peritoneal dialysis
The choice depends on medical suitability, lifestyle and the patient's ability to manage the treatment safely.
Hemodialysis vs Peritoneal Dialysis
Both methods can provide kidney replacement therapy, but they work differently.
| Feature | Hemodialysis | Peritoneal Dialysis |
|---|---|---|
| Main filter | Dialyzer | Peritoneal membrane |
| Access | Bloodstream access | Peritoneal catheter |
| Location | Dialysis center or selected home programs | Usually performed at home |
| Schedule | Depends on treatment plan | Depends on prescribed regimen |
| Monitoring | Clinical monitoring required | Patient/caregiver training required |
There is no universally best dialysis method. The appropriate choice should be discussed with the nephrology team.
Dialysis for Acute Kidney Injury
Not every patient with acute kidney injury requires dialysis.
However, severe AKI can sometimes lead to complications that cannot be controlled adequately through medicines and supportive treatment.
Dialysis may then be used temporarily.
If kidney function subsequently recovers sufficiently, dialysis may be discontinued.
The duration of dialysis in AKI therefore depends on the underlying cause and the patient's recovery.
Dialysis for Chronic Kidney Disease
Chronic kidney disease progresses differently in different people.
Patients with advanced CKD are monitored for:
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Kidney-function decline
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Fluid accumulation
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Potassium abnormalities
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Acid-base disturbances
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Anemia
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Bone and mineral complications
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Symptoms related to kidney failure
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Nutritional status
When kidney replacement therapy becomes appropriate, the nephrology team can discuss dialysis options and preparation.
Preparing for Long-Term Dialysis
Dialysis preparation is ideally started before an emergency situation occurs.
Depending on the selected modality, preparation may include:
For Hemodialysis
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Evaluation for vascular access
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Planning and creation of an AV fistula or graft when appropriate
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Review of medications
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Education about dialysis
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Dietary and fluid guidance
For Peritoneal Dialysis
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Medical assessment
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Placement of a peritoneal dialysis catheter
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Patient and caregiver training
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Home-environment assessment
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Infection-prevention education
Early planning can help patients understand their choices and avoid unnecessary emergency catheter placement when possible.
What Is Dialysis Diet?
Dietary recommendations for dialysis patients are individualized.
Depending on laboratory results and the dialysis modality, the care team may provide guidance regarding:
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Sodium
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Potassium
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Phosphorus
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Protein
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Fluid
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Calories
A common misconception is that every dialysis patient should follow exactly the same diet.
In reality, nutritional requirements vary according to kidney function, dialysis schedule, blood-test results, medications and other medical conditions.
A renal dietitian may be involved when appropriate.
Fluid Management During Dialysis
When kidney function is severely reduced, the body may have difficulty removing excess fluid.
Too much fluid between dialysis sessions can contribute to:
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Swelling
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Breathlessness
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High blood pressure
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Increased strain on the heart
Patients may therefore receive individualized fluid recommendations.
Fluid requirements should not be changed without discussing them with the treating healthcare team.
Common Dialysis-Related Complications
Dialysis can be an effective and necessary treatment, but complications can occur.
Possible problems include:
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Low blood pressure during hemodialysis
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Muscle cramps
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Fatigue
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Access problems
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Infection
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Catheter-related complications
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Changes in electrolyte levels
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Fluid imbalance
Patients should report new or persistent symptoms to their dialysis or nephrology team.
Dialysis Access Care
People receiving hemodialysis need to protect their vascular access.
General precautions may include:
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Keeping the access area clean
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Monitoring for redness or swelling
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Reporting pain or discharge
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Watching for fever
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Following instructions regarding blood pressure measurements and blood draws on the access arm
Patients should follow the specific instructions provided by their dialysis team.
Can Dialysis Cure Kidney Failure?
Dialysis does not cure chronic kidney failure.
It replaces some important kidney functions and can support life when the kidneys can no longer adequately maintain the body's internal balance.
For selected patients with end-stage kidney disease, kidney transplantation may provide an alternative to long-term dialysis.
In some cases of acute kidney injury, dialysis can be temporary if kidney function recovers.
Is Kidney Transplant an Alternative to Dialysis?
For suitable patients with advanced kidney failure, kidney transplantation can be an alternative to ongoing dialysis.
A transplant requires detailed medical evaluation and lifelong follow-up.
After transplantation, patients generally need anti-rejection medicines and regular monitoring.
Not every patient is medically suitable for transplantation, so an individualized transplant assessment is required.
How Can Patients Stay Healthy During Dialysis?
Patients receiving dialysis can support their overall health by:
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Attending scheduled treatments
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Taking prescribed medicines correctly
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Following individualized dietary advice
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Monitoring fluid intake as advised
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Protecting dialysis access
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Reporting symptoms promptly
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Keeping diabetes and blood pressure controlled
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Staying physically active when medically appropriate
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Attending regular nephrology appointments
Dialysis is only one part of comprehensive kidney-failure care.
When Should a Dialysis Patient Seek Urgent Medical Help?
Prompt medical attention may be required for:
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Severe breathlessness
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Chest pain
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Fainting
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Confusion
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Severe weakness
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High fever or chills
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Redness or discharge around dialysis access
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Sudden severe swelling
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Significant bleeding from dialysis access
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Very low blood pressure with severe symptoms
The dialysis team should be contacted promptly when serious or unusual symptoms occur.
Can Someone Stop Dialysis?
Stopping dialysis is a major medical decision.
A patient should never stop scheduled dialysis independently.
In some circumstances, kidney function may recover sufficiently after acute kidney injury and the medical team may discontinue dialysis.
For people with irreversible advanced kidney failure, stopping dialysis can result in serious complications and may shorten life. Decisions about continuing or stopping dialysis should involve the patient, family where appropriate and the treating medical team, with discussion of goals of care and available alternatives.
Dialysis Care at Prabhakar Bhurke Clinic
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized nephrology care for patients with advanced kidney disease and dialysis-related medical needs.
Care may involve:
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Assessment of kidney-function decline
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Evaluation of dialysis requirements
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Dialysis modality counseling
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Management of dialysis-related complications
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Fluid and electrolyte management
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Blood-pressure management
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Anemia and mineral-bone disorder management
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Dialysis access-related medical coordination
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Kidney transplant evaluation and follow-up
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Long-term kidney-failure management
The treatment plan is developed according to the patient's medical condition, kidney function, laboratory findings and personal circumstances.
Frequently Asked Questions About Dialysis
What is dialysis used for?
Dialysis helps remove waste products and excess fluid from the blood when the kidneys cannot perform these functions adequately.
Does everyone with kidney failure need dialysis?
Not immediately. The need for dialysis depends on kidney function, symptoms, laboratory abnormalities, fluid status and other complications.
How long can a person live on dialysis?
Survival varies greatly between individuals and depends on age, overall health, underlying disease, cardiovascular health, complications and access to transplantation. A nephrologist can provide more individualized information.
Can dialysis be temporary?
Yes. Dialysis can sometimes be temporary in acute kidney injury when kidney function subsequently recovers.
Is hemodialysis painful?
The dialysis process itself is not normally described as painful, although needle insertion for vascular access and some treatment-related symptoms can cause discomfort.
Is peritoneal dialysis done at home?
Peritoneal dialysis is generally performed at home after appropriate training and medical assessment.
Can dialysis patients drink water?
Fluid intake is often individualized. Some patients require fluid restrictions, while the amount varies according to urine output, dialysis schedule, weight changes and other medical factors.
Conclusion
Dialysis is an important form of kidney replacement therapy for people whose kidneys can no longer adequately remove waste and excess fluid.
Hemodialysis and peritoneal dialysis are the two main forms. The right option depends on medical suitability, lifestyle, support systems and individual preferences where appropriate.
For patients with acute kidney injury, dialysis may sometimes be temporary. For advanced irreversible kidney failure, dialysis may become a long-term treatment, while kidney transplantation can be an option for selected patients.
At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized assessment and ongoing management for patients requiring dialysis and other forms of advanced kidney care.
Medical Disclaimer
This article is intended for general educational and informational purposes only and does not constitute medical advice, diagnosis or treatment. Dialysis decisions must be made by a qualified nephrology team based on kidney function, symptoms, laboratory findings, fluid status and overall health. Do not alter, postpone or stop scheduled dialysis without discussing it with your treating medical team. Dietary and fluid requirements vary between patients and should be individually prescribed. If you experience severe breathlessness, chest pain, fainting, confusion, high fever, significant bleeding from dialysis access or rapidly worsening symptoms, seek urgent medical attention.
