For Dialysis Patients & Their Families : Plain-Language Answers
Your questions, answered honestly.
Dialysis comes with a lot of new vocabulary, unfamiliar tests, and questions nobody warned you about. Below are the questions we hear most often from our patients — grouped by topic, written in plain language, and answered the way we would answer in clinic. This page is a starting point, not a substitute for your nephrologist’s specific advice for you.
Important · Read First
If you are experiencing chest pain, severe breathlessness, heavy bleeding from your access, sudden confusion, or any symptom that feels urgent — do not look for the answer here. Contact your dialysis centre or go to your nearest emergency department immediately.
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During the Session
What happens in the four hours at the centre.
Vascular access, dialyser, water, monitoring — the things that go into every session.
Why does a dialysis session take four hours?
The four-hour duration is what allows your machine to remove enough waste, toxins, and excess fluid to keep you healthy between sessions. A shorter session would leave waste in your bloodstream and excess fluid in your body — both of which contribute to symptoms during the days off, and to long-term complications.
Three sessions a week of about four hours each is the international clinical standard for conventional hemodialysis. Some patients may dialyse more frequently for shorter periods — your nephrologist will tell you what prescription is right for you.
What is an AV fistula, and why is it the best access?
An AV fistula (arteriovenous fistula) is a connection a surgeon creates between an artery and a vein in your arm. Over a few weeks, the vein becomes larger and stronger — allowing the high blood flow needed for dialysis to take place safely through two needles.
Compared to other access types like temporary catheters or grafts, fistulas have the lowest infection risk, fewest complications, and the longest functional life. They are the access of choice for almost every patient on long-term dialysis.
What is the dialyser, and is mine reused?
The dialyser is the small cylinder on your dialysis machine that actually filters your blood. It contains thousands of tiny hollow fibres — your artificial kidney for the duration of the session.
Practice on dialyser reuse varies by centre. Where reuse is practised, it is done under strict protocols with documented chemical disinfection between sessions, and the dialyser is reserved for the same patient throughout. AKC follows national and international guidelines on safe reuse practice where applicable. Your nephrologist will tell you whether your dialyser is single-use or reused, and the protocol followed at your centre.
Is the water used for my dialysis safe?
Yes — and the standards are stricter than most people realise. You are exposed to 120–180 litres of water during a single dialysis session, which is why dialysis water must meet pharmaceutical-grade purity standards.
Every AKC centre operates a multi-stage reverse osmosis water treatment plant with sand filter, carbon filter, softener, RO membrane, and UV sterilisation. Water quality readings (TDS, hardness, chlorine, endotoxin, and microbiological tests) are logged daily and audited centrally through the Axis QA Dashboard.
Why does the technician keep checking the machine?
Your dialysis machine is constantly measuring multiple parameters — blood flow, dialysate composition, temperature, pressure, conductivity, ultrafiltration. The technician’s job is to watch these numbers continuously, respond to any alarm, and confirm that the machine is delivering exactly what your nephrologist has prescribed.
They are also watching you — your vitals, your fluid balance, your comfort. The frequent checks are what makes dialysis safe.
Symptoms & Side Effects
What you might feel — and what to do about it.
Common complications during and between sessions, and when to flag them to your team.
Why do I get cramps during dialysis?
Cramps usually happen when fluid is being removed too quickly, when you arrive at the session with too much fluid weight gain, or when your sodium balance is off. They are uncomfortable but treatable — your team can slow the ultrafiltration rate, give you a small saline boost, or adjust the prescription for next time.
Cramps are one of the most common reasons patients gain fluid weight too quickly between sessions. Keeping fluid intake within your daily target is the most effective way to reduce them over time.
Why does my blood pressure drop during dialysis?
Intra-dialytic hypotension — a drop in blood pressure during the session — happens to many dialysis patients at some point. It is usually caused by removing too much fluid too quickly, by certain medications, by eating during the session, or by autonomic changes in your body.
You might feel dizzy, nauseous, cold, or as if you are about to faint. The team will lower your bed, give you fluid, and adjust the machine immediately. Recurrent hypotension is a signal to review your dry weight and your prescription with your nephrologist.
Why am I so tired after a session?
Post-dialysis fatigue is common and has multiple causes — significant fluid shifts during the session, changes in electrolytes, and the metabolic effort your body makes to adjust. Many patients describe needing several hours of rest after a session, especially in the first months on dialysis.
Fatigue often improves as your body adjusts and as your prescription is optimised. If you are consistently exhausted for the rest of the day, talk to your nephrologist about reviewing your dry weight, your ultrafiltration rate, and your haemoglobin level.
Why am I always feeling cold during dialysis?
Feeling cold during dialysis is common — your blood is circulating through a machine, the dialysate is slightly cooler than body temperature, and your overall metabolic rate is often low. A blanket and warm clothes during the session help most patients.
Some patients feel cold because of anaemia (low haemoglobin) — which is very common in dialysis and should be on your nephrologist’s monitoring list.
My access site is red and tender. What should I do?
Redness, swelling, warmth, or tenderness at your vascular access site — especially if accompanied by fever — can be a sign of infection. Access infection is a serious complication and should not be self-managed.
Is itching all over my body related to dialysis?
Uraemic pruritus — persistent itching in dialysis patients — is common and is linked to mineral imbalances (especially phosphorus), dry skin, and the build-up of substances that dialysis can only partly remove.
It is not just a skin problem — it often improves when phosphorus is better controlled, when dialysis adequacy is optimised, and with topical treatments your team can recommend. Mention it at every clinic visit. It tends to be undertreated because patients don’t always realise it can be managed.
Tests & Monitoring
The numbers we follow, and why each one matters.
Blood tests, body composition, adequacy, and the regular monitoring that goes into good dialysis care.
What is BCM, and why do I have it done?
BCM stands for Body Composition Monitoring. It is a painless, non-invasive test that uses small electrodes placed on your hand and foot to measure how much extra fluid is in your body, how much muscle you have, and how much fat. The whole test takes only a few minutes.
BCM helps your nephrologist set your dry weight accurately — the weight your body should be at the end of a dialysis session, with no extra fluid. Getting dry weight right is one of the most important parts of long-term dialysis care.
What is Kt/V, and why do they keep talking about it?
Kt/V is the standard measure of dialysis adequacy — how much waste your sessions are actually removing. A higher Kt/V means more effective dialysis. The target for most patients on three-times-weekly dialysis is Kt/V above 1.2 to 1.4.
Your Kt/V is calculated from blood samples taken before and after a session. If it falls below target, your nephrologist may adjust your session duration, blood flow rate, or filter type. Kt/V is one of the figures tracked continuously on the Axis QA Dashboard at every AKC centre.
Why do I need a blood test every month?
Monthly blood tests track the things that change with dialysis — haemoglobin (for anaemia), urea and creatinine (waste levels), potassium, calcium, phosphorus (electrolytes), albumin (nutrition), parathyroid hormone (bone health), and others. Each result tells your team whether your prescription, your medications, or your diet needs to be adjusted.
Dialysis is not a one-time prescription — it is a continuously calibrated treatment. Monthly bloods are how that calibration happens.
My phosphorus is high. Why does it matter?
Phosphorus builds up in dialysis patients because dialysis only partly removes it. Persistently high phosphorus contributes to itching, bone weakening, blood vessel calcification, and increased cardiovascular risk over years.
Phosphorus is managed through three things working together: dietary phosphorus control, phosphate-binder medications taken with meals, and adequate dialysis. Your dietitian and nephrologist will work with you on all three.
What is anaemia, and why do most dialysis patients have it?
Healthy kidneys produce a hormone called erythropoietin that signals your bone marrow to make red blood cells. In kidney failure, that signal weakens — and most dialysis patients develop anaemia as a result.
Anaemia is treated with erythropoietin injections (EPO), iron supplementation, and adequate dialysis. Most patients can reach and maintain a healthy haemoglobin target with the right protocol. If you feel persistently tired, breathless on exertion, or cold, your haemoglobin level is one of the first things to check.
Why do they check my access flow regularly?
Vascular access can develop a narrowing (stenosis) over time, which reduces the blood flow available for dialysis and increases the risk of access failure. Regular access surveillance — clinical examination, flow studies, sometimes ultrasound — lets your team detect narrowing before it becomes a problem and fix it with a minor procedure.
An access that fails suddenly is much harder to recover than one that is monitored and intervened on early.
Filters & Therapies
The different ways dialysis can be done.
Standard, high-flux, HDF, home dialysis — what the choices mean and when they apply.
What is the difference between standard, high-flux, and HDF dialysis?
These describe different types of dialyser membranes and treatment techniques:
- Standard dialysis uses a low-flux membrane — effective at removing small molecules like urea and creatinine. The most common type globally.
- High-flux dialysis uses a more permeable membrane that removes middle-sized molecules in addition to small ones. Generally better outcomes than standard for long-term patients.
- HDF (Hemodiafiltration) combines diffusion (like standard dialysis) with convection (a different mechanism that improves clearance of larger middle molecules). The most advanced modality of conventional dialysis, with growing evidence of improved outcomes.
Your nephrologist will recommend the modality that fits your clinical profile, your tolerance, and what is available at your centre.
What is peritoneal dialysis — and is it for me?
Peritoneal dialysis (PD) uses the lining of your own abdomen as the filter, with dialysis fluid exchanged through a soft catheter placed in the abdomen. It is done at home, every day, usually overnight on a machine or in multiple short manual exchanges.
PD is a good option for patients who value daily flexibility, have stable home circumstances, and a clinical profile that suits the modality. Your nephrologist can tell you whether PD is appropriate for you.
Can I do dialysis at home?
Yes — for the right patient. Home hemodialysis means the dialysis machine, water purification system, and trained operator come into your own home. AKC’s home hemodialysis programme is among India’s longest-running structured services for this modality.
Home dialysis is suitable for stable patients with sufficient home space, a willing support person (family or trained operator), and the clinical profile to dialyse safely outside an institutional setting. It also allows for more frequent shorter sessions when clinically indicated — which has better outcomes than 3×/week conventional for some patients.
Why does my nephrologist sometimes change my prescription?
Your dialysis prescription — session duration, blood flow rate, dialysate composition, ultrafiltration target, dialyser type — is the set of instructions telling the machine how to run your session. It is calibrated to you personally and reviewed continuously.
Changes happen when your blood tests show that adequacy is off, when your fluid balance changes, when your dry weight needs adjustment, or when complications emerge. A changing prescription is a sign that your care is being actively managed — not a sign that something is wrong.
Are there newer dialysis technologies coming?
Dialysis technology is evolving steadily. HDF is now more widely available than a decade ago. Machine ergonomics, alarm systems, and connectivity have all improved. Online monitoring through digital records means clinical decisions are now made on continuous data rather than periodic snapshots.
Research on wearable artificial kidneys, implantable dialysis devices, and bio-artificial kidneys is ongoing — though most of these are still in clinical research stages, not routine practice. AKC’s nephrologists track this field closely and will discuss new options with you when they become clinically applicable.
Consultations & Care
Working with your nephrology team.
How often you should see your specialist, what to bring, and what to ask.
How often should I see my nephrologist?
Most stable maintenance dialysis patients see their nephrologist at least once a month — often during a dialysis session itself. New patients, patients with recent complications, or patients adjusting prescriptions may see them more often.
The monthly review is when blood test results are reviewed, dry weight is reassessed, medications are adjusted, and any concerns you have are addressed. If you have a specific question or symptom that can’t wait, ask for an earlier review — that is part of normal care, not a special request.
What should I bring to a clinic appointment?
A few things help your consultation be more productive:
- Recent blood test results (your team will have them, but a personal copy helps)
- A list of current medications including any non-prescription supplements
- A note of any symptoms or events since the last visit — even small ones
- Your blood pressure readings from home, if you take them
- Questions written down in advance — it is hard to remember everything in the room
Can a family member come with me to my appointments?
Yes — and it is often encouraged. A family member, spouse, or adult child can help you remember what was discussed, ask questions you might not think of, and stay informed about your care. Dialysis is a long-term treatment that affects the whole family; involving them early helps everyone.
Will I see the same staff every session?
Generally yes — centres are organised so that the same dialysis technicians and nurses work the same shifts as much as possible. This continuity matters. Over time, your care team knows your fistula, your weight history, your patterns, and your preferences in detail. That familiarity is part of how safe care happens.
Should I be talking to anyone about how I'm coping emotionally?
Yes. Depression, anxiety, and sleep disturbance are common in dialysis — published research places depression rates in maintenance dialysis at 25–45% globally — and they are clinical conditions that respond to treatment. There is nothing embarrassing about asking for support.
AKC centres offer routine emotional wellbeing screening and structured access to counselling. Tell your nurse, technician, or nephrologist if you feel persistently low, anxious, or overwhelmed. Treating the mind is as much a part of your dialysis care as treating the kidney.
Transplant Pathway
The next chapter — if it’s the right one for you.
Eligibility, donor pathways, the wait, and what life after transplant actually looks like.
Am I eligible for a kidney transplant?
Eligibility is decided through a formal evaluation by a transplant team and depends on multiple factors — your overall health, your cardiovascular fitness, any active infections or cancers, age and frailty, your willingness to take long-term immunosuppression, and your psychosocial readiness.
The only way to know is to be assessed. Your nephrologist should be having the transplant conversation with you proactively — if they haven’t, ask. Every transplant-eligible AKC patient is offered active counselling about transplantation.
What are the different ways to get a kidney?
In India, there are four primary pathways:
- Living-related donor — a family member is medically and immunologically suitable. The most direct pathway with the best outcomes.
- Paired Kidney Exchange (PKE) — if your family donor is not a match, your pair can be matched with another pair so that each patient receives a compatible donor. AKC operates one of India’s most active PKE registries (ASTRA).
- Deceased donor waitlist — for patients without a living donor, registration on the national/state waitlist for a kidney from a deceased donor.
- Fusion pathways — combining waitlist and PKE registries to open additional matching opportunities. A model AKC has helped pioneer.
My family wants to donate — what happens next?
The donor undergoes a thorough evaluation by an independent team — this assesses their medical fitness (so donation is safe for them), the immunological match with you, psychological readiness, and the legal documentation required under Indian transplant law. Donor safety is paramount at every step.
If the donor is found unfit or immunologically incompatible, the conversation often moves to the PKE pathway — where your pair can be matched with another pair in the registry.
What is paired kidney exchange?
Paired Kidney Exchange (PKE) solves the problem of a willing but incompatible family donor. Two (or more) patient-donor pairs are matched against each other — your donor gives their kidney to another recipient whose donor gives a kidney to you. Both transplants happen simultaneously.
AKC operates one of India’s most active PKE registries (ASTRA), has published research on PKE optimisation in international journals, and has helped hundreds of patients get transplants through this pathway. If a family donor exists but isn’t a match, PKE is your next conversation.
How long is the deceased donor waitlist in India?
Wait times vary significantly by state, blood group, and immunological factors. In some states the wait can be several years; in others significantly shorter. Patients with rare blood groups or high antibody levels generally wait longer.
This is one reason the living donor pathway is encouraged where possible — including paired kidney exchange when a direct family donor isn’t a match. Your transplant coordinator can give you a realistic estimate based on your specific situation.
What will my life look like after a transplant?
For most patients, a successful kidney transplant means no more dialysis sessions, no more fluid restrictions, a much more flexible diet, more energy, and a generally higher quality of life. Survival outcomes are also significantly better than on long-term dialysis.
You will need to take immunosuppression medications for the rest of the transplant’s life, attend regular clinic visits (initially frequent, later less so), and remain vigilant about infections and rejection. For the right patient, transplant is by far the best outcome available — which is why AKC’s centres encourage it actively.
When You Need More Than a Page
A web page can answer common questions. It cannot answer yours specifically. Your nephrologist, your dialysis nurse, and your care team are the people who can. This page exists to help you ask better questions when you see them.