What Preparing for Renal Replacement Therapy Involves: Access, Heart Checks and Screening

The letter arrives with a phrase most people have never heard spoken aloud: “referred to the access clinic.” Nothing hurts yet. Work is still work, the dog still needs walking, and the only visible sign of trouble is a set of blood results that has been drifting the wrong way for two years. Then a nurse mentions protecting the veins in one arm, and a decision that felt distant suddenly has an appointment date.

That is how preparing for renal replacement therapy usually starts: quietly, ahead of symptoms, with a series of practical steps rather than a single dramatic event. There is an arm to be mapped, a heart to be scanned, a stack of blood tests, a conversation about where and how treatment will happen, and sometimes a transplant evaluation running alongside all of it.

This explainer walks through each of those steps in plain language, explains why the order matters, and sets out what the evidence does and does not say about timing.

What does renal replacement therapy actually do?

Renal replacement therapy is the umbrella term for any treatment that takes over the work of failed kidneys: hemodialysis, peritoneal dialysis or a kidney transplant. Healthy kidneys filter roughly 150 quarts of blood a day, clear waste products such as urea, balance salt, potassium and acid, remove excess water, and make hormones that regulate blood pressure and red blood cell production. When they fail, something has to do at least the filtering part.

Hemodialysis does it outside the body. Blood leaves through a needle or catheter, passes through a filter called a dialyzer where waste and fluid cross a thin membrane into a cleansing solution, and returns clean. In-center sessions typically run about four hours, three times a week, according to the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK); home schedules can be more frequent and shorter, or overnight.

Peritoneal dialysis does it inside the body. A soft tube sits in the abdomen, and a sugar-based fluid is run in and left for hours. The lining of the abdominal cavity, the peritoneum, acts as the membrane; waste drifts from blood vessels into the fluid, which is then drained and replaced. Most people do this at home, either by hand several times a day or with a machine overnight.

A transplant replaces the filtering organ itself, using a kidney from a living or deceased donor, and requires lifelong medicines that dampen the immune system so the new kidney is not rejected.

None of these options restores every kidney function. Dialysis, for instance, does not replace the hormones, which is why anemia treatment and blood pressure management continue alongside it. Understanding that gap explains a good deal of what the preparation phase involves.

When to start dialysis, and who is usually asked to wait

Kidney function is tracked with the estimated glomerular filtration rate, or eGFR, a calculation from a blood creatinine level that approximates how much blood the kidneys filter each minute. Kidney failure is generally defined as an eGFR below 15, or the point at which symptoms of waste build-up can no longer be controlled by other means, according to NIDDK.

The number alone rarely decides the start date. Kidney teams weigh how a person feels, whether nausea, appetite loss, itching or breathlessness are appearing, whether potassium or acid levels are becoming hard to control, and whether fluid is accumulating in the legs or lungs. Two people with the same eGFR can be months apart in when they actually need treatment.

Guidelines in the United States and United Kingdom favor starting when symptoms or laboratory markers demand it rather than at a fixed eGFR, because trials comparing earlier and later starts have not shown a survival advantage from beginning dialysis simply because a threshold was crossed. NHS guidance describes dialysis being started when kidney disease reaches its most advanced stage and symptoms warrant it.

Who is usually asked to wait? People whose eGFR is between 15 and 30 and who feel well are typically in the preparation window, not the treatment window. That is the time for access planning, transplant listing and education, precisely because it is not yet the time for needles.

Some people are also asked to pause a decision because a reversible cause is being treated, such as a medication effect, dehydration or a urinary blockage, or because a heart or infection issue needs to be resolved before an access operation is safe. The treating team makes that call, and it can change as results come in.

Preparing for renal replacement therapy starts months before the first session

The single most useful thing to know is that preparation is a months-long process, not a week of pre-op checks. NIDDK advises that planning should begin when kidney disease reaches stage 4, meaning an eGFR under 30, so that access can be created and healed, and a treatment choice made, before it becomes urgent.

Three things drive that timeline. First, the preferred type of hemodialysis access, a fistula, takes two to three months to mature after surgery, according to NIDDK. Second, transplant evaluation involves multiple tests and specialist opinions that cannot be compressed into a fortnight. Third, education takes time: people who understand the options tend to choose differently from those told at the bedside that dialysis starts tomorrow.

An unplanned start, by contrast, usually means a temporary catheter placed in a large neck or chest vein. It works, but it carries a higher risk of bloodstream infection and clotting than a fistula, and it often means in-center hemodialysis by default rather than by choice.

A typical preparation pathway, in rough order, looks like this:

• Education sessions covering all options, including conservative care
• Vein mapping and a surgical referral if hemodialysis is chosen
• Heart assessment, especially before any operation
• Blood tests, viral screening and vaccinations
• Transplant evaluation, where appropriate, running in parallel
• Dietitian and pharmacist reviews
• Home visits or training if home dialysis is planned

The order flexes with circumstances. Someone with known heart disease may have cardiac testing first; someone with a living donor may prioritize the transplant workup. The point is that all of it can happen while a person still feels reasonably well, which is exactly when it is easiest to absorb.

Dialysis fistula surgery: why vein protection begins at the first clinic visit

An arteriovenous fistula is a surgical connection between an artery and a vein, usually in the forearm or upper arm. Once joined, high-pressure arterial blood flows into the vein, which gradually thickens and enlarges over two to three months until it can tolerate repeated needle placement and deliver the blood flow hemodialysis needs, per NIDDK.

That waiting period is why fistula surgery sits so early in the plan. A fistula created the week dialysis must start is of no use for weeks, so a temporary catheter would be needed as a bridge.

Guidelines from kidney societies in the US and UK favor the fistula as the first-choice access because it uses only the person’s own tissue. Mayo Clinic notes it is the preferred access type because it tends to last longer and has lower rates of infection and clotting than grafts or catheters. The evidence here is largely from observational registries rather than randomized trials, but it is consistent.

Before surgery, most units perform vein mapping, an ultrasound that measures the size and health of arm veins and arteries to pick the best site. The operation itself is usually done under local or regional anesthesia as a day case.

The practical consequence for anyone in stage 4 kidney disease is vein protection. Kidney teams often ask that blood draws, intravenous lines and blood pressure cuffs avoid the non-dominant arm, because scarred or damaged veins may rule out a fistula later. A wristband or note in the record is common.

Afterwards, people are taught to feel for the “thrill,” a buzzing vibration over the fistula that signals blood is flowing, and to check it daily. A fistula that stops buzzing needs same-day attention, since a clot caught early can sometimes be cleared.

Grafts and catheters: the other hemodialysis access options

Not every arm can support a fistula. Veins may be too small, previous lines may have scarred them, or diabetes and vascular disease may have narrowed the arteries. Two alternatives exist, each with a different trade-off between speed and durability.

An arteriovenous graft uses a soft synthetic tube to bridge an artery and a vein under the skin. Because the tube does not need to mature, it can usually be used within two to three weeks of placement, according to NIDDK. The cost of that convenience is a higher tendency to clot and to become infected than a fistula, and a shorter working life on average.

A central venous catheter is a flexible tube inserted into a large vein in the neck, chest or groin, with two ports that sit outside the skin. Tunneled versions, which run under the skin for a short distance before exiting, are used for longer periods. Catheters can be used immediately, which makes them the default when dialysis begins urgently.

They are also the access most associated with bloodstream infection, because there is a permanent opening from skin to bloodstream. Cleveland Clinic describes catheters as generally intended for short-term use for that reason. Dressings must stay dry, showering usually requires a protective cover, and swimming is typically not advised.

Choosing between these is a surgical and medical judgment. Age, vein quality, heart function, how soon dialysis is needed and how long it is likely to continue all feed in. Someone expecting a living-donor transplant within months might reasonably accept a catheter; someone likely to be on hemodialysis for years is usually steered toward a fistula, even if it means waiting.

Peritoneal dialysis catheter placement and the healing window

Peritoneal dialysis needs its own access: a soft silicone tube placed through the abdominal wall into the peritoneal cavity, with several inches left outside the body to connect to fluid bags or a cycler machine. Surgeons place it either through a small open incision or with a laparoscope, usually under general or regional anesthesia.

The catheter is not used straight away. NIDDK notes that most people wait about two to three weeks after placement so the tissue can heal around the tube and seal the exit site; some units use small flushing volumes sooner if dialysis must begin urgently. That healing window is another reason to place the catheter before it is needed rather than after.

Preparation for peritoneal dialysis also involves a home assessment. A nurse checks that there is clean space to perform exchanges, storage for a month of fluid boxes, and a suitable spot for a cycler if overnight treatment is planned. Training itself typically runs over one to two weeks of daily sessions, covering hand hygiene, connecting and disconnecting without touching sterile ends, recognizing cloudy drained fluid as a sign of peritonitis, and caring for the exit site.

Not everyone is a good fit. Extensive previous abdominal surgery with scarring, a large hernia, certain bowel conditions or an inability to perform exchanges without help can make peritoneal dialysis impractical. Body size and how much residual kidney function remains also influence whether the peritoneum can clear enough waste on its own.

People often ask whether the catheter shows under clothes. The exit site is usually placed to one side below the waistline; a small dressing and a secured tube are normally the only visible signs.

Why heart checks come before the kidneys are treated

Kidneys and heart share the same risk factors and the same blood vessels, and each damages the other. Long-standing high blood pressure and diabetes, the two leading causes of kidney failure, stiffen arteries throughout the body. Kidney disease then adds its own burden: retained fluid strains the heart, anemia makes it work harder, and mineral imbalance can calcify vessels and valves.

NIDDK states that people with chronic kidney disease are more likely to develop heart disease and to die from it than to reach kidney failure. The American Heart Association describes the relationship as two-way, with high blood pressure both causing kidney damage and being worsened by it.

That is why a heart assessment sits near the front of the preparation pathway. The routine elements are an electrocardiogram, which records the heart’s electrical rhythm, and an echocardiogram, an ultrasound that shows how well the pumping chambers and valves work. Both matter for practical reasons. A fistula adds a permanent extra circuit that the heart must pump through, and hemodialysis shifts several liters of fluid in a few hours; a heart with poor pumping function tolerates both less well.

People with symptoms such as chest tightness, breathlessness on exertion or fainting, or with known coronary disease or diabetes of long duration, often have further testing: a stress test, a coronary scan or an angiogram. Transplant programs in particular usually require this, because the operation and the anti-rejection medicines that follow place additional demands on the heart.

Findings can change the plan rather than block it. A significant coronary narrowing might be treated first; severely reduced pumping function might steer the choice toward peritoneal dialysis, which removes fluid more gently over hours. These are decisions for the cardiology and kidney teams together.

What screening blood tests and infection checks are done?

The laboratory work before renal replacement therapy serves three purposes: to track how close kidney failure is, to find problems that dialysis or transplant would make worse, and to protect other people in a shared dialysis unit.

The first group is familiar to anyone with kidney disease. Creatinine and eGFR chart function; potassium and bicarbonate show whether the blood is drifting toward dangerous levels or becoming acidic; urea reflects waste build-up. Hemoglobin picks up anemia, which is common because failing kidneys make less of the hormone that drives red cell production. Calcium, phosphate and parathyroid hormone reveal the mineral and bone disturbance that accompanies advanced kidney disease.

The second group looks for coexisting conditions. Blood sugar and cholesterol assess cardiovascular risk. Liver tests and clotting studies matter before any operation. Iron studies guide anemia treatment. Nutritional markers such as albumin flag people who are losing weight or muscle and may need dietitian input before starting.

The third group is infection screening. Hepatitis B, hepatitis C and HIV testing are standard before dialysis, and the CDC recommends that dialysis units test for hepatitis B before a person’s first treatment so that those who carry the virus are dialyzed on dedicated machines and in separate areas. Tuberculosis screening is common before transplant listing, because immune-suppressing medicines can reactivate dormant infection.

People are sometimes surprised by the volume of tubes drawn. The results shape almost every downstream decision, from whether anemia needs treatment before surgery to whether a transplant listing can proceed, so the front-loading is deliberate. Results are usually reviewed at a multidisciplinary meeting where nephrologists, surgeons, nurses, dietitians and pharmacists build a shared plan.

Vaccinations and infection prevention before starting dialysis

Advanced kidney disease weakens the immune response, and dialysis adds repeated breaches of the skin barrier. Vaccination therefore forms part of preparation, and timing matters, because vaccines given while kidney function is still reasonable tend to produce a stronger response than the same vaccines given after dialysis has begun.

Hepatitis B vaccination is the most emphasized. The CDC recommends it for people with chronic kidney disease who are likely to need dialysis, ideally completed before starting, and dialysis units check antibody levels afterward to confirm protection, since people with kidney failure sometimes respond less well and may need repeat courses. The prescribing clinician decides the schedule.

Beyond hepatitis B, standard adult recommendations apply and are often brought up to date during the preparation window:

• Annual influenza vaccination
• Pneumococcal vaccination
• COVID-19 vaccination per current national guidance
• Tetanus, diphtheria and pertussis boosters if due
• Shingles vaccination for eligible age groups

Transplant candidates have an additional consideration. Live vaccines are generally avoided after transplant because the immune-suppressing medicines make them unsafe, so any live vaccine that is needed, such as the measles-mumps-rubella or older shingles vaccine, is normally given well before the operation. Transplant teams typically review this specifically.

Infection prevention also has a hands-on side. People planning peritoneal dialysis or home hemodialysis learn aseptic technique, meaning a set of habits that keep sterile connections sterile. Those with catheters learn dressing care. Dental review is often recommended before transplant, since untreated gum or tooth infection can seed the bloodstream. Small steps, each one reducing a specific risk.

Kidney transplant evaluation: can it happen before dialysis?

Yes, and kidney teams generally encourage it. A transplant performed before dialysis has begun is called a preemptive transplant, and NIDDK describes it as an option for people whose eGFR has fallen to around 20 or below and who have a suitable donor. Registry data suggest that people transplanted before starting dialysis tend to do at least as well as those transplanted afterward, though this comes from observational studies rather than randomized trials, so the comparison is not definitive.

The evaluation is thorough because a transplant is a major operation followed by lifelong medicines that suppress the immune system. It typically covers:

• Blood group and tissue typing, to match against donors
• Heart assessment, as described above, often with stress testing
• Cancer screening appropriate to age and sex, since immune suppression can accelerate existing cancers
• Infection screening, including hepatitis, HIV, tuberculosis and often cytomegalovirus
• Imaging of the pelvic blood vessels where the new kidney will be connected
• Assessment of the bladder if there is a history of urinary problems
• Review by a social worker and, where needed, a psychologist

Living donation shortens the wait considerably. A donor, often a relative, partner or friend, undergoes a separate evaluation to confirm that giving a kidney is safe for them. Where blood groups or tissue types do not match, paired exchange programs may allow two incompatible pairs to swap donors.

Some people are asked to wait or are not listed: active cancer, active infection, severe heart disease that cannot be treated, or circumstances that would make taking daily medicines unreliable are the usual reasons. Weight and smoking status are sometimes addressed as conditions of listing rather than bars to it. The transplant team explains its criteria, and a person can ask for the reasoning behind any decision.

Hemodialysis, peritoneal dialysis, transplant or conservative care: how they compare

Choosing a modality is the decision around which most other preparation revolves. The table summarizes what each pathway typically involves at the preparation stage. It is a starting point for conversation, not a ranking; the right option depends on medical suitability, home circumstances and what a person values most.

Pathway	Access or preparation needed	Typical lead time before use	Where treatment happens	Points to weigh
In-center hemodialysis	Fistula, graft or catheter	Fistula 2–3 months; graft 2–3 weeks; catheter immediate (NIDDK)	Dialysis unit, usually 3 sessions a week	Staff-run; fixed schedule; travel to unit; dietary and fluid limits between sessions
Home hemodialysis	Fistula or graft, plus training and home setup	Access as above; training several weeks	Home, often more frequent or overnight	Flexible timing; needs a trained partner in some programs; space for machine and supplies
Peritoneal dialysis	Abdominal catheter, home assessment, training	About 2–3 weeks healing (NIDDK); training 1–2 weeks	Home, daily exchanges or overnight cycler	Gentler fluid removal; daily commitment; peritonitis risk; needs storage space
Kidney transplant	Full medical, cardiac and cancer evaluation; donor search	Months for evaluation; wait for a deceased donor can be years	Hospital operation, then clinic follow-up	Closest to normal kidney function; major surgery; lifelong immune-suppressing medicines
Conservative kidney management	Symptom plan, medicines review, advance care planning	Ongoing from decision	Clinic and home	No dialysis; focuses on comfort and quality of life; kidney function continues to decline

Two observations from the table matter most. Every option except a catheter needs weeks to months of lead time, which is the argument for early planning. And the pathways are not mutually exclusive: many people move between them, starting on peritoneal dialysis and later transplanting, or moving from home to in-center hemodialysis as circumstances change.

Conservative kidney management: preparing not to dialyze

Some people decide, after full discussion, that dialysis is not for them. Conservative kidney management, sometimes called supportive care, means treating the symptoms and complications of kidney failure with medicines, diet and close follow-up, without dialysis or transplant. NHS guidance lists it explicitly as one of the options a kidney team should offer.

It is most often chosen by people who are older or who have several serious illnesses alongside kidney failure. For them, evidence from observational studies suggests that dialysis may add relatively little time and can consume much of that time in travel, sessions and recovery. The studies are not randomized, and individual circumstances vary widely, so this is a judgment made person by person rather than a rule.

Preparation for conservative management is as active as preparation for dialysis, just pointed differently. It typically includes:

• A medicines review to stop drugs that are no longer helping and manage those that control symptoms such as itching, nausea, breathlessness and fluid retention
• Dietary advice focused on comfort and appetite rather than strict restriction
• Anemia management, which can substantially improve energy
• Advance care planning: written wishes about future treatment, a named decision-maker, and preferences about where care should happen
• Introduction to palliative care services, which specialize in symptom control and can be involved for months or years

A decision for conservative care is not irreversible. People sometimes revisit it if symptoms become harder to control, and the kidney team keeps that door open. Equally, someone who starts dialysis can later choose to stop; that too is a recognized, supported decision.

The value of raising conservative care early, alongside the other options, is that it lets people choose from a position of understanding rather than crisis.

What the weeks around the first treatment usually look like

Once access is ready and blood results or symptoms indicate that treatment should begin, the pace changes. What follows is a typical pattern; individual units vary.

In the final weeks before starting, appointments cluster. The access is checked, by ultrasound for a fistula or by a flush for a peritoneal catheter. Bloods are repeated to fix a baseline. A dietitian reviews potassium, phosphate, salt and fluid targets, which differ between modalities; peritoneal dialysis, being continuous, is usually less restrictive than three-times-weekly hemodialysis. A pharmacist reviews every medicine, since some accumulate once kidneys fail and others are removed by dialysis and may need timing adjustment. Those changes are made by the prescribing clinician.

The first hemodialysis sessions are usually shorter than the eventual routine and build up over several treatments, so that waste levels fall gradually. Rapid correction can cause headache, nausea or confusion. Feeling tired and “washed out” afterward is common in the early weeks, and many people find it eases as the body adjusts and the schedule settles. Dizziness from blood pressure dropping during fluid removal is the most frequent complaint, and staff adjust targets in response.

Peritoneal dialysis starts with supervised exchanges, then a graduated handover to independent home treatment. Mild fullness or shoulder-tip discomfort from fluid in the abdomen is common at first.

Emotionally, the first month is often harder than the physical side. Routines shift, employment may need adjusting, and the permanence of the situation lands. Kidney units commonly have social workers and, in some, psychologists, and peer support from people already on dialysis is widely valued. Asking about these early is reasonable.

What people often get wrong about preparing for renal replacement therapy

Several beliefs surface repeatedly in kidney clinics. Each has a kernel of truth wrapped around a misunderstanding.

“If I feel fine, I don’t need to prepare yet.” Kidney failure is often symptom-free until late, and by the time nausea and breathlessness appear, there is no longer time for a fistula to mature. Feeling well is the reason to prepare now, not a reason to wait.

“Dialysis is what happens when the kidneys stop completely.” Most people start with some residual function, and preserving it matters; residual function makes fluid and diet easier to manage and is one of the arguments for peritoneal dialysis in some people. Dialysis supports the kidneys rather than replacing a switched-off organ.

“A catheter is simpler, so it’s the easy choice.” It is quicker, but catheters carry the highest infection and clotting risk of any access, which is why guidelines favor fistulas when time allows.

“Once on dialysis, a transplant is off the table.” Most people who receive transplants are already on dialysis. Preemptive transplant is one option, not the only route.

“Home dialysis is only for young, healthy people.” Suitability depends on ability to learn the routine, home space and support, not age alone. Many older people manage peritoneal dialysis well, sometimes with a trained helper.

“Dialysis makes kidney disease worse.” There is no good evidence that dialysis itself accelerates kidney decline; the disease progresses on its own timeline.

“The doctors decide; I just turn up.” Modality choice is a shared decision. Guidelines in the US and UK both frame it that way, and the team’s job is to lay out options, including conservative care, so that the person’s priorities shape the plan.

Questions to ask your care team

A preparation appointment covers a great deal, and questions evaporate once the door closes. Writing a list beforehand helps. The following are ones kidney nurses say people wish they had asked earlier.

• Based on my current eGFR and symptoms, roughly when do you expect I might need to start, and what would make that sooner or later?
• Am I medically suitable for all four pathways, including home dialysis, transplant and conservative care? If not, why not?
• Which arm should I protect, and how do I make sure other clinics know?
• What did my vein mapping show, and which access type does the surgeon recommend for me?
• How long after my access operation will it be usable, and what is the plan if I need dialysis before then?
• What heart tests will I have, and what results would change the plan?
• Which vaccinations should I have before starting, and when will my hepatitis B antibody level be checked?
• Can I be referred for transplant evaluation now, and do I have anyone who might be assessed as a living donor?
• Which of my current medicines might change once I start, and who will manage that?
• What will my diet and fluid limits look like on the option I am leaning toward?
• How will treatment fit around work, travel or caring responsibilities, and what support exists for those?
• Who do I call if my fistula stops buzzing, my catheter site looks infected or my drained fluid is cloudy?
• Is there someone already on this treatment I could talk to?

Bringing a companion to take notes is useful; many units also provide written summaries or decision aids. If an answer is unclear, asking for it to be repeated in plain words is entirely reasonable and expected.

When to call your doctor

During preparation and in the early weeks of treatment, certain symptoms need prompt attention rather than a wait for the next scheduled visit. Kidney units usually give a direct number for exactly this purpose.

Seek urgent care, including emergency services if severe, for: sudden breathlessness or inability to lie flat, which can signal fluid in the lungs; chest pain or pressure; a very slow or irregular heartbeat, or new muscle weakness, which can accompany a dangerously high potassium level; confusion, drowsiness or seizures; or heavy bleeding from an access site that does not stop with firm pressure after several minutes.

Contact the kidney team the same day for: a fistula or graft that has stopped buzzing or feels cold, hard or painful, since a fresh clot may be treatable; redness, warmth, pus or fever around a catheter exit site; cloudy drained peritoneal fluid, abdominal pain or fever, the signs of peritonitis; fever or chills during or after a dialysis session, which can indicate a bloodstream infection; swelling of the arm or hand on the access side; or a fall in urine output combined with rapid weight gain and leg swelling.

Also let the team know about persistent nausea, vomiting or loss of appetite, worsening itching, severe cramping, or dizziness on standing, since these often mean that fluid targets, medicines or the dialysis prescription need adjusting.

None of these lists is a tool for self-diagnosis. Their purpose is to make clear that a call is always appropriate when something feels wrong, and that in kidney care an early call is frequently what keeps a small problem small. Decisions about what to change rest with the treating team.

Frequently asked questions

How long before dialysis should preparation start?

Preparation typically begins when eGFR falls below 30, which NIDDK describes as stage 4 kidney disease, giving several months for education, access surgery and healing. The exact interval depends on how quickly kidney function is declining, which varies widely between people. A kidney team tracks the trend over repeated blood tests and adjusts the timeline accordingly, sometimes bringing forward access surgery if the decline accelerates.

When to start dialysis: is there a fixed eGFR number?

No fixed number applies to everyone. Kidney failure is generally defined as an eGFR below 15, but the decision to start dialysis rests on symptoms and blood results such as potassium, acid levels and fluid overload, not the eGFR alone. Trials comparing earlier and later starts have not shown a survival benefit from beginning at a set threshold. The treating team judges timing for each person individually.

What is dialysis fistula surgery like?

It is usually a day-case operation under local or regional anesthesia in which a surgeon joins an artery to a nearby vein in the forearm or upper arm. Recovery from the incision takes a few weeks, but the fistula itself needs two to three months to enlarge and strengthen before needles can be used, according to NIDDK. People are taught to feel for a buzzing vibration daily and report if it disappears.

Why do I need an echocardiogram before dialysis?

An echocardiogram shows how well the heart pumps and whether the valves work properly. This matters because a fistula adds an extra circuit for the heart to pump through, hemodialysis removes liters of fluid within hours, and transplant surgery is a major operation. Heart disease is very common in advanced kidney disease, and knowing the heart’s condition lets the team choose the safest access and treatment type.

Which vaccines are given before starting renal replacement therapy?

Hepatitis B vaccination is the one most emphasized, and the CDC recommends it for people expected to need dialysis, ideally completed before starting. Influenza, pneumococcal, COVID-19 and routine adult boosters are usually brought up to date. Transplant candidates may also need any live vaccines given well before surgery, since these are avoided once immune-suppressing medicines begin. The prescribing clinician sets the schedule.

Can I have a kidney transplant evaluation before starting dialysis?

Yes. Transplant evaluation can begin once eGFR falls to around 20 or below, and a preemptive transplant, performed before dialysis starts, is an option when a suitable living or deceased donor is available. The evaluation covers heart tests, cancer and infection screening, blood and tissue typing, and imaging, and usually takes several months. Referral can run alongside dialysis preparation rather than instead of it.

How soon after peritoneal dialysis catheter placement can it be used?

Most people wait about two to three weeks after the catheter is placed so that tissue heals around the tube and the exit site seals, according to NIDDK. If dialysis is needed urgently, some units begin with small fluid volumes sooner while the person lies flat. Training in performing exchanges typically takes one to two weeks and usually happens during or shortly after this healing period.

What is conservative kidney management?

Conservative kidney management means treating kidney failure without dialysis or transplant, using medicines, diet and close follow-up to control symptoms such as fluid retention, itching, nausea and anemia. It is often chosen by older people or those with several serious illnesses, for whom observational evidence suggests dialysis may add little time. It includes advance care planning and palliative care support, and the decision can be revisited.

Do I have to stop working when I start dialysis?

Not necessarily. Many people continue working, particularly with home dialysis or evening in-center sessions that fit around a job. In-center hemodialysis usually takes about four hours three times a week plus travel, so employment may need adjusting rather than ending. Kidney unit social workers can advise on flexible arrangements and workplace protections. Discussing work early lets the team factor it into the choice of treatment type.

Why am I told to protect one arm before dialysis?

The veins in the non-dominant arm are the usual site for a future fistula, and they need to be healthy and undamaged for the surgery to succeed. Repeated blood draws, intravenous lines and tight blood pressure cuffs can scar or narrow those veins. Kidney teams therefore ask that all such procedures use the other arm, and a wristband or note in the medical record helps other clinicians know.

References

• Hemodialysis: National Institute of Diabetes and Digestive and Kidney Diseases (NIH)
• Peritoneal Dialysis: National Institute of Diabetes and Digestive and Kidney Diseases (NIH)
• Choosing a Treatment for Kidney Failure: NIDDK (NIH)
• Dialysis: NHS

This article is for general information only and is not a substitute for professional medical advice. Please consult a qualified doctor about your individual situation.