AKI and CKD from the nurse's side

Both cause retention of fluid, potassium, acid, and waste products.

Acute kidney injurySudden; often reversiblePrerenal, intrinsic, postrenal causesMonitor urine output, creatinine, K⁺Avoid nephrotoxins and contrastDiuretic (recovery) phase: watch for lowK⁺ and dehydrationChronic kidney diseaseProgressive over months to yearsDiabetes and hypertension are top causesAnemia, bone disease, hyperkalemiaBP and glucose control slow progressionPlan access before dialysis is neededvs
AKI vs CKD. Urine output below about 0.5 mL/kg/h for 6 hours is part of the AKI definition.
FindingNursing concern
Potassium above 5.0 mEq/L, peaked T wavesDysrhythmia risk: cardiac monitor, notify, anticipate treatment
Weight gain, crackles, edemaFluid overload: fluid restriction, diuretics or dialysis as ordered
Rising BUN, confusion, itching, nauseaUremia
Low hemoglobinAnemia from low erythropoietin
High phosphate, low calciumBone and mineral disorder: phosphate binders with meals

Adjust doses of renally cleared drugs; avoid NSAIDs and magnesium- or phosphate-containing products unless prescribed.

Hemodialysis access and care

Protecting the access protects the client's lifeline.

PalpateThrillpresentAuscultateBruit presentInspectNo redness,drainageProtectNo BP, IV,drawsReportAbsent thrillor bruit
AV fistula care. An absent thrill or bruit suggests clotting and needs prompt reporting. A new fistula needs weeks to mature before use.
Hemodialysis complicationClueAction
HypotensionDizziness, cramps, nausea during treatmentNotify dialysis team; position; fluids per protocol
Disequilibrium syndromeHeadache, restlessness, confusion, seizuresSlow or stop per protocol; notify
BleedingProlonged bleeding at needle sites (heparin)Pressure; monitor
InfectionFever, access rednessReport; aseptic access care

Weigh before and after dialysis; the difference reflects fluid removed.

Peritoneal dialysis

The peritoneum acts as the filter; infection is the main risk.

Peritoneal dialysis issuesCloudy effluentPeritonitis: report,culturePoor outflowReposition, checkkinks, bowelsHigh glucoseDextrose indialysateAbdominal painCold dialysate orinfection
Peritoneal dialysis. Track inflow and outflow volumes; outflow should equal or exceed inflow.
  • Use strict aseptic technique for exchanges; wear masks as instructed.
  • Warm dialysate with a dry heating method; never microwave.
  • Report fever, abdominal pain, or cloudy drainage immediately.

Renal diet and teaching

Diet changes with the stage of disease and the type of dialysis.

NutrientGuidance (as prescribed)Examples to limit
PotassiumLimitBananas, oranges, potatoes, tomatoes, salt substitutes
PhosphorusLimit; phosphate binders with mealsDairy, cola, processed foods
SodiumLimitProcessed and canned foods
FluidRestrict to prescribed amountCount ice, soup, gelatin
ProteinModerate before dialysis; higher on dialysisEmphasize high-quality protein

A renal dietitian individualizes the plan.

NGN-style case

Linking a missed treatment to a life-threatening lab value.

functions Clinical judgment case — missed dialysis

A client on hemodialysis missed two sessions. The client reports weakness and shortness of breath. Potassium is 7.0 mEq/L; the monitor shows peaked T waves; there are crackles and 3 kg of weight gain. What is the priority?

  1. Recognize cues: severe hyperkalemia with ECG changes, plus fluid overload.
  2. Analyze: immediate risk of fatal dysrhythmia.
  3. Place on a cardiac monitor, notify the provider immediately, and raise the head of the bed.
  4. Anticipate IV calcium, insulin with glucose, and urgent dialysis.

Answer. Hyperkalemia with ECG changes is the priority: monitor, notify, and prepare for emergency treatment and urgent dialysis.