Starting Dialysis: What It Means and What to Ask

Dialysis is a treatment that replaces part of the filtering work your kidneys can no longer do. It is not a cure for the underlying disease, but it can help you live with kidney failure. People usually start when advanced kidney failure causes symptoms such as fatigue, nausea, swelling, or a dangerous blood test result.

There are two main types. Hemodialysis filters your blood through a machine, usually at a dialysis center about three times a week for three to five hours each session. Peritoneal dialysis uses the lining of your abdomen as a natural filter, with fluid exchanges you do at home, often overnight with a machine.

The right type depends on your overall health, whether you have a suitable blood vessel for access, your daily routine, and how much support you have at home. There is no single best choice for everyone; your care team can walk you through the trade-offs.

Preparation usually begins weeks or months before the first session. For hemodialysis, most people need a vascular access, usually an arteriovenous fistula in the arm, created by a small surgery and given time to mature. Peritoneal dialysis needs a catheter placed in the abdomen, plus training to do exchanges safely at home.

Your care team may also adjust medicines, review your diet, and ask about vaccines and travel plans. A renal dietitian can help you adapt your eating to the treatment, because fluid, sodium, potassium, and phosphorus needs change once dialysis starts.

Bring a list of questions to appointments. Useful ones include: Which type of dialysis fits my health and routine? When should my access be created? Who do I call with symptoms between sessions? What should I expect in the first week?

Your first treatment is an adjustment, not a test of how well you will do. Staff have guided many people through this day, and they expect questions. Most centers start with a check-in: you are weighed, your blood pressure and pulse are measured, and your access is examined before anything is connected.

For hemodialysis, you sit in a recliner. A nurse cleans your access and connects either two needles or a catheter to the machine, which filters your blood for the session. You can read, use your phone, or sleep while it runs. A technician or nurse checks your blood pressure regularly and adjusts the machine if you feel unwell.

For peritoneal dialysis, the first day may be a training day rather than a treatment day, especially if your catheter was placed recently. You learn how to warm and exchange the fluid, keep the exit site clean, and recognize problems. A nurse stays with you until you feel confident handling the steps.

Some discomfort is common on the first day. With hemodialysis you may feel lightheaded, nauseated, or get muscle cramps as fluid is removed. With peritoneal dialysis you may feel fullness or pressure as fluid fills your abdomen. Tell the staff; they can slow the machine, adjust fluid amounts, or change positions to help.

After the session, stand up slowly. Blood pressure can dip right after treatment, and you may feel unusually tired for the rest of the day. That is normal. Many people feel better within a few sessions as their body adjusts, and the team fine-tunes your prescription along the way.

The first weeks are a settling-in period. Fatigue is the most common complaint, along with mild nausea, cramping, or trouble sleeping. Most of this eases as your body adapts and your care team adjusts the treatment, fluid goals, and medicines.

It is also normal to feel overwhelmed, anxious, or low. Dialysis changes routines, energy, and sometimes work or travel plans. Many people find it helps to keep a short symptom journal, write down questions before appointments, and talk with a renal social worker or psychologist.

Most people continue working, traveling, and living full lives on dialysis. Treatments take planning, but they do not define everything about your life. Your care team, dietitian, and social worker are there to help you build a routine around your real schedule.

Some symptoms need immediate action, some need a same-day call, and some can wait for your next appointment. Knowing the difference can prevent both panic and dangerous delay.

Go to the emergency room now

• Chest pain, pressure, or tightness

• Trouble breathing or shortness of breath that is new or getting worse

• Fainting, confusion, or a change in how alert you feel

• Bleeding from your access that does not stop with firm pressure

• A seizure or sudden severe headache

Call your dialysis center or clinician today

• Fever or chills

• Redness, warmth, swelling, or drainage around your vascular access or catheter

• Cloudy peritoneal dialysis fluid, abdominal pain, or nausea with PD

• Sudden weight gain of several pounds in a day or two, or severe swelling

• Vomiting that keeps you from eating or taking medicines

• A very high blood pressure reading at home

Peritonitis warning signs

Peritonitis is a serious infection of the abdominal lining that can happen with peritoneal dialysis. The most common early signs are cloudy dialysis fluid, abdominal pain or tenderness, fever, and nausea. The fluid turning cloudy is often the first thing people notice.

What can wait for a clinic visit

Mild tiredness, occasional cramps after treatment, small changes in appetite, or trouble sleeping are worth mentioning at your next appointment, but they are not emergencies. When in doubt, call. Your center would rather answer a quick question than hear about a problem later.

Do not decide on your own to skip a session, even if you feel fine. Feeling better does not mean the waste and fluid are gone. Toxins and extra fluid build up between treatments, and several missed sessions in a row can become life-threatening.

If you know you will miss a treatment, call the center as early as possible. Staff can reschedule, adjust the plan, and tell you what to watch between sessions, such as temporary limits on fluids or certain foods. If you have already missed one, call and be honest about it; they will help you get back on schedule.

Planned and unplanned interruptions happen: a center holiday, bad weather, machine problems, or a family emergency. Dialysis centers have backup plans, and home peritoneal dialysis programs keep extra supplies and teach manual exchanges for power outages or machine failures. Ask your team about their plan before you need it.

Travel is possible with planning. For hemodialysis, arrange ahead of time with a center at your destination; your home center can coordinate it. For peritoneal dialysis, arrange delivery of supplies, or a temporary exchange plan, before you leave. Give your team your itinerary.