Chronic kidney disease: fluid and diet limits, protecting the fistula arm, medicines and teaching
- Safe practice
In chronic kidney disease the nurse helps the patient keep to fluid and diet limits, protects the dialysis access arm and checks every medicine.
What it is
Chronic kidney disease is a slow loss of kidney function over months or years, most often from diabetes and high blood pressure. As it advances, fluid, salt, potassium and phosphorus build up, blood pressure rises and anaemia and bone problems appear. Nursing care centres on daily weight, blood pressure, the fluid limit and the kidney diet agreed with the dietitian, protecting the arm that has or will have a dialysis access, reviewing every medicine (including over-the-counter ones), keeping vaccines up to date and teaching the warning signs. Dialysis is discussed with the patient before it is needed.
What it requires
- Blood pressure control slows further kidney damage; the provider sets the target.
- Diet: enough calories, protein as prescribed, and limits on salt, potassium, phosphorus and fluid as the disease advances.
- Recommended vaccines include hepatitis A and B, influenza, pneumococcal and COVID-19.
- Laboratory checks follow albumin, calcium, blood count, electrolytes, magnesium and phosphorus.
How it is applied (and why)
- Weigh every morning on the same scale — it tracks fluid gain and whether the calorie goal is met.
- Measure blood pressure and report values above the target set — control slows kidney damage.
- Record intake and output and apply the fluid limit, counting soups, gelatin, ice and juicy fruit — they all add fluid.
- Help with thirst: avoid salty foods, use small cups, keep the patient cool — thirst makes the limit hard to keep.
- Reinforce the dietitian's plan: fewer high-potassium foods, less dairy for phosphorus, no salt substitutes — the kidneys cannot clear them.
- Protect the access arm: no blood pressure, IV or blood draws there — these can damage the access.
- Review all medicines, including over-the-counter ones, vitamins and herbs, with the prescriber — some harm the kidneys or build up.
- Watch for tiredness, itching, bone pain, easy bruising and confusion — signs of anaemia, mineral problems and waste build-up.
- Check that vaccines are up to date — CKD raises the risk of infection.
- Teach the warning signs and dialysis options early — dialysis is planned before the kidneys fail.
In nursing practice
- Most patients with CKD have high blood pressure; abnormal heart or lung sounds may appear as fluid builds up.
- Phosphorus can rise even early, lowering calcium and weakening bones; binders may be prescribed.
- Anaemia is common in advanced CKD and may need iron, an erythropoiesis-stimulating medicine or transfusion as prescribed.
- Dialysis usually starts when about 10 to 15 % of kidney function is left.
Common mistakes
- Taking blood pressure or drawing blood from the fistula or graft arm.
- Telling a patient with advanced CKD to drink plenty of water.
- Forgetting soups, ice and gelatin when counting fluids.
- Letting the patient use salt substitutes or over-the-counter anti-inflammatories without asking the provider.
Test yourself
Think of the answer, then tap the question to see it.
Why should a patient with CKD not use salt substitutes?
Because they contain potassium, which failing kidneys cannot clear and which can cause dangerous heart rhythms.
What must never be done in the arm with a dialysis fistula or graft?
Taking blood pressure, drawing blood or starting an IV, because they can damage the access.
Which foods count toward the fluid limit in advanced CKD?
All liquids plus water-rich foods such as soups, gelatin, ice pops, ice cream and juicy fruit and vegetables.
Why does the nurse weigh a patient with CKD every morning?
To track fluid gain between days and to check that the patient gets enough calories to keep a healthy weight.
Elsewhere in DurgiPedia
Connections
Educational content for students; it does not replace your institution's protocols, supervised clinical training or a prescriber's order. Dose-calculation examples use made-up numbers: they are educational, not a clinical order.
Sources: Chronic kidney disease, MedlinePlus Medical Encyclopedia (MedlinePlus, US National Library of Medicine, 2025); Diet - chronic kidney disease, MedlinePlus Medical Encyclopedia (MedlinePlus, US National Library of Medicine, 2025); End-stage kidney disease, MedlinePlus Medical Encyclopedia (MedlinePlus, US National Library of Medicine, 2026); Taking care of your vascular access for hemodialysis, MedlinePlus Medical Encyclopedia (MedlinePlus, US National Library of Medicine, 2024).
Spotted a mistake?We are always improving for the community. Tell us what is wrong and our team will review it.Report a mistake
Representative model, for educational purposes only.