Kidney dialysis treatment is a form of kidney replacement therapy used when the kidneys can no longer adequately remove waste products, control fluid balance or maintain healthy levels of electrolytes and acid-base balance.

Healthy kidneys continuously filter the blood and remove waste through urine. When kidney function becomes severely impaired, harmful substances and excess fluid can accumulate in the body.

Dialysis can perform some of the functions normally carried out by the kidneys.

However, dialysis does not cure every cause of kidney failure. Depending on the underlying condition, dialysis may be temporary or may be required for the long term.

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides specialist evaluation and management for patients with kidney disease, kidney failure and dialysis-related needs.

When Is Kidney Dialysis Needed?

Dialysis is not started solely because creatinine has crossed a particular number.

A nephrologist considers the patient's overall condition, including:

• Severity and progression of kidney failure

• Symptoms caused by kidney dysfunction

• Fluid overload

• Potassium abnormalities

• Acid-base disturbances

• Urine output

• Blood pressure and fluid status

• Uremic complications

• Response to medical treatment

• Overall health and nutritional status

In acute kidney injury, dialysis may sometimes be used temporarily while the kidneys recover.

In advanced chronic kidney disease, dialysis may become a long-term treatment when kidney function is no longer sufficient to maintain the body's internal balance.

How Does Dialysis Help the Body?

When kidney filtration becomes inadequate, dialysis can help:

• Remove waste products from the blood

• Remove excess fluid

• Help control potassium and other electrolytes

• Correct certain acid-base abnormalities

• Reduce symptoms associated with severe kidney failure

The exact goals of treatment depend on the patient's condition.

Dialysis should therefore be viewed as part of a broader kidney-care plan rather than as a treatment that simply lowers creatinine.

Main Types of Kidney Dialysis Treatment

There are two major forms of dialysis.

Hemodialysis

In hemodialysis, blood is circulated through a dialysis machine and a specialized filter called a dialyzer.

The dialyzer removes waste products and excess fluid before the cleaned blood is returned to the body.

Hemodialysis can be performed in a dialysis center and, for selected patients, may also be performed at home with appropriate training and equipment.

Peritoneal Dialysis

Peritoneal dialysis uses the lining of the abdomen, called the peritoneum, as a natural filtering membrane.

Dialysis fluid is introduced into the abdominal cavity through a catheter. Waste products and excess fluid move into the dialysis fluid, which is then drained and replaced.

Peritoneal dialysis can be performed at home after appropriate training and medical assessment.

Hemodialysis: How the Treatment Works

During a typical hemodialysis session:

1. Blood is accessed through an appropriate vascular access.

2. Blood travels through the dialysis circuit.

3. The dialyzer filters waste and excess fluid.

4. The treated blood returns to the body.

5. The dialysis prescription is adjusted according to the patient's clinical needs.

Treatment duration and frequency vary between patients.

The nephrologist determines the appropriate dialysis prescription based on kidney function, body size, fluid status, laboratory results and other factors.

What Is Dialysis Vascular Access?

Patients receiving long-term hemodialysis require reliable access to the bloodstream.

Common forms include:

Arteriovenous Fistula

An AV fistula connects an artery to a vein, usually in the arm.

It is often preferred for long-term hemodialysis because of its durability and lower infection risk compared with some catheter-based options.

Arteriovenous Graft

An AV 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 temporary or, in selected situations, longer-term access.

However, catheters generally carry a higher risk of infection and other complications than a well-functioning fistula.

What Happens During a Dialysis Session?

Before treatment, the dialysis team may assess:

• Weight

• Blood pressure

• Pulse

• Fluid status

• Symptoms

• Recent laboratory results

During treatment, healthcare professionals monitor the patient for changes in:

• Blood pressure

• Heart rate

• Fluid removal

• Symptoms

• Dialysis access function

After dialysis, the patient's condition is reassessed and treatment goals are reviewed.

How Often Is Kidney Dialysis Required?

Dialysis schedules are individualized.

Many people receiving conventional center-based hemodialysis undergo treatment several times per week, but the exact schedule depends on the patient's residual kidney function, dialysis prescription, fluid intake, nutritional status and other clinical factors.

Peritoneal dialysis may follow a different schedule depending on the prescribed technique.

The treating nephrologist determines the appropriate frequency.

Common Side Effects During or After Dialysis

Some patients may experience:

• Fatigue

• Muscle cramps

• Headache

• Nausea

• Dizziness

• Low blood pressure

• Temporary weakness

These symptoms can have different causes, including fluid removal, blood-pressure changes or shifts in electrolytes.

Patients should report recurring or severe symptoms to the dialysis team so that the treatment prescription can be reviewed.

Can Dialysis Remove All Kidney Waste?

Dialysis can remove many waste products and excess fluid, but it does not reproduce every function of healthy kidneys.

The kidneys also perform important hormonal and metabolic functions.

For example, kidney disease can affect:

• Red blood cell production

• Bone and mineral metabolism

• Blood-pressure regulation

• Vitamin D metabolism

• Electrolyte balance

Therefore, dialysis patients may need additional medicines and monitoring to manage complications of advanced kidney disease.

Kidney Dialysis Treatment and Creatinine Levels

Creatinine usually decreases after dialysis because the treatment removes creatinine from the blood.

However, creatinine can rise again between sessions when kidney filtration remains severely reduced.

For this reason, dialysis adequacy should not be judged using one creatinine value alone.

Doctors also consider:

• Symptoms

• Fluid balance

• Potassium

• Bicarbonate

• Urea

• Dialysis adequacy measurements

• Nutritional status

• Residual kidney function

Kidney Dialysis Diet

Dietary requirements vary according to kidney function, dialysis type and laboratory results.

A renal dietitian or nephrologist may recommend adjustments to:

• Sodium

• Potassium

• Phosphorus

• Protein

• Fluid intake

Patients should not follow a restrictive "kidney diet" from the internet without professional guidance.

For example, potassium restrictions may be necessary for some patients but not others.

Similarly, protein requirements can differ between people with advanced kidney disease who are not on dialysis and those receiving dialysis.

Fluid Management During Dialysis

Excess fluid can accumulate when the kidneys cannot produce enough urine.

Too much fluid between dialysis sessions may contribute to:

• Swelling

• High blood pressure

• Breathlessness

• Heart strain

The dialysis team may establish an individualized fluid target based on urine output, body weight, heart health and other factors.

Patients should follow their prescribed fluid limit rather than assuming that drinking large amounts of water is beneficial.

Medicines Commonly Used With Dialysis Care

Dialysis itself may not correct every complication of kidney failure.

Depending on individual needs, patients may require medicines for:

• Blood pressure

• Anemia

• Mineral and bone disorders

• Potassium abnormalities

• Fluid overload

• Diabetes

• Cardiovascular disease

Some medicines require dose adjustments when kidney function is severely reduced.

Patients should inform their nephrologist about all prescription medicines, over-the-counter products, supplements and herbal preparations.

Dialysis in Acute Kidney Injury

Not every patient with acute kidney injury requires dialysis.

However, severe acute kidney injury may cause complications that cannot be controlled adequately with medicines alone.

Temporary dialysis may be considered in situations such as:

• Severe fluid overload

• Persistent dangerous potassium elevation

• Severe metabolic acidosis

• Significant uremic complications

• Certain toxin exposures

• Severe kidney dysfunction with complications

If kidney function subsequently recovers, dialysis may be discontinued.

Dialysis in Chronic Kidney Disease

Chronic kidney disease develops over time and may eventually progress to advanced kidney failure.

Before dialysis becomes necessary, doctors often focus on slowing disease progression and managing complications.

Depending on the patient's condition, care may include:

• Blood-pressure management

• Diabetes control

• Reduction of excess urine protein when appropriate

• Dietary management

• Treatment of anemia

• Management of mineral abnormalities

• Avoidance of unnecessary kidney-harming medicines

• Regular monitoring of kidney function

When kidney replacement therapy is likely to be needed, early dialysis education and planning can make the transition more organized.

Can Dialysis Be Avoided?

Sometimes.

If kidney dysfunction is caused by a reversible condition, treating the underlying problem may restore enough kidney function to avoid or discontinue dialysis.

For example, some cases of acute kidney injury related to dehydration, obstruction, infection or medication effects may improve with appropriate treatment.

However, established advanced kidney failure may require long-term kidney replacement therapy.

The goal should not be to avoid dialysis at all costs. The priority is choosing the safest treatment based on the patient's medical condition.

Dialysis and Kidney Transplantation

For eligible patients with advanced kidney failure, kidney transplantation may offer an alternative to long-term dialysis.

A transplant replaces the filtering function of failed kidneys with a functioning donor kidney.

Patients may be evaluated for:

• Living donor transplantation

• Deceased donor transplantation

• Preemptive transplantation before long-term dialysis when appropriate

Not everyone is medically suitable for transplantation.

A transplant evaluation considers cardiovascular health, infections, cancer screening, immunological factors and other medical conditions.

Preparing for Long-Term Dialysis

If a patient is approaching advanced kidney failure, preparation can begin before dialysis is urgently required.

Planning may include:

• Learning about hemodialysis and peritoneal dialysis

• Discussing home-based treatment options where available

• Planning vascular access

• Evaluating transplant eligibility

• Reviewing medicines

• Receiving dietary guidance

• Understanding fluid management

• Discussing dialysis schedules and practical requirements

Early planning can help patients make informed decisions rather than starting dialysis unexpectedly during an emergency.

When Should a Dialysis Patient Seek Urgent Medical Help?

Dialysis patients should seek urgent medical evaluation for symptoms such as:

• Severe breathlessness

• Chest pain

• Confusion

• Fainting

• Severe weakness

• Very little or no urine when this is unusual for the patient

• Persistent vomiting

• Severe swelling

• Fever or chills

• Redness, pain or discharge around a dialysis catheter or access site

• Sudden deterioration in health

These symptoms may indicate fluid overload, infection, electrolyte abnormalities, cardiovascular problems or another serious complication.

Long-Term Kidney Dialysis Care

Successful dialysis management involves more than attending treatment sessions.

Long-term care may include:

• Regular blood tests

• Dialysis adequacy assessment

• Blood-pressure monitoring

• Anemia management

• Bone and mineral monitoring

• Nutrition assessment

• Vascular-access care

• Infection prevention

• Medication review

• Cardiovascular risk management

• Transplant evaluation when appropriate

Regular nephrology follow-up is important because treatment requirements can change over time.

Kidney Dialysis Treatment at Prabhakar Bhurke Clinic

At Prabhakar Bhurke Clinic, Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, provides individualized kidney care for patients with advanced kidney disease and dialysis-related concerns.

Depending on the patient's condition, specialist care may include:

• Evaluation of declining kidney function

• Assessment of dialysis indications

• Hemodialysis-related medical management

• Peritoneal dialysis assessment

• Management of dialysis complications

• Electrolyte and fluid-balance management

• Anemia and mineral-bone disorder management

• Review of dialysis-related medicines

• Kidney transplant evaluation and counseling

• Long-term monitoring of kidney disease

Treatment decisions are individualized according to kidney function, symptoms, laboratory findings, medical history and patient-specific needs.

Frequently Asked Questions

What is kidney dialysis treatment?

Kidney dialysis treatment is kidney replacement therapy that helps remove waste products and excess fluid when the kidneys cannot perform these functions adequately.

Is dialysis required for everyone with kidney disease?

No. Many people with kidney disease never require dialysis. Dialysis is generally considered when kidney failure becomes advanced or serious complications cannot be controlled with other treatments.

What is the difference between hemodialysis and peritoneal dialysis?

Hemodialysis filters blood through a dialysis machine and dialyzer. Peritoneal dialysis uses the lining of the abdomen as a filtering membrane.

How many times a week is dialysis required?

The schedule depends on the patient's dialysis type, residual kidney function, clinical condition and prescribed treatment plan. Many conventional hemodialysis schedules involve several sessions each week.

Can kidney function improve after starting dialysis?

In some cases of acute kidney injury, kidney function can recover and dialysis can eventually be stopped. In permanent advanced kidney failure, long-term dialysis or transplantation may be required.

Does dialysis cure kidney failure?

Dialysis replaces some important kidney functions but does not generally repair permanently damaged kidneys. In appropriate patients, kidney transplantation may provide another form of kidney replacement therapy.

Can dialysis patients drink as much water as they want?

No. Fluid intake may need to be limited depending on urine output, kidney function, dialysis schedule and heart health. The dialysis team should provide an individualized fluid recommendation.

Conclusion

Kidney dialysis treatment can help people whose kidneys are no longer able to adequately remove waste, manage fluid or maintain electrolyte and acid-base balance.

Hemodialysis and peritoneal dialysis are the two main forms of dialysis, and each has different requirements and practical considerations. Dialysis may be temporary in some cases of acute kidney injury or may become a long-term treatment for advanced chronic kidney failure.

The decision to start dialysis should be based on the patient's overall clinical condition rather than a single creatinine value. Early nephrology evaluation can also allow time to discuss dialysis options, vascular access, nutrition, fluid management and kidney transplantation.

For individualized kidney and dialysis-related care, consult Dr. Sandip Prabhakar Bhurke, super specialist nephrologist and transplant physician, at Prabhakar Bhurke Clinic.

Medical Disclaimer

This article is intended for general educational and informational purposes only and does not constitute medical advice, diagnosis or treatment. Dialysis is a specialized medical treatment, and the decision to start, stop or modify dialysis must be made by a qualified nephrologist based on the patient's kidney function, symptoms, laboratory findings, fluid status, electrolyte and acid-base balance and overall health. Dialysis schedules, fluid intake, diet and medicines must be individualized. Do not change dialysis treatment, medicines or fluid intake based solely on this article. Seek urgent medical attention for severe breathlessness, chest pain, confusion, fainting, severe swelling, persistent vomiting, fever with suspected dialysis-access infection or sudden worsening of health.