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Electrolyte Imbalance Nursing Care Plan: 2 Sample Plans and Interventions

Med-Surg · Written by Professor Foxx, RN, MSN · Updated October 2026

An electrolyte imbalance means a mineral like potassium, sodium, calcium, or magnesium is too high or too low in the blood. Even small changes can affect the heart, muscles, and brain. Your priorities are watching the heart rhythm, keeping the client safe from falls and seizures, and correcting the cause.

A · AssessmentD · DiagnosisP · PlanningI · InterventionE · Evaluation

Each care plan below follows the nursing process (ADPIE).

CARE PLAN 1 · NURSING DIAGNOSIS

Risk for Decreased Cardiac Output

Risk factors
  • Abnormal potassium, calcium, or magnesium levels
  • Fluid losses from vomiting, diarrhea, or diuretics
  • Kidney disease that limits electrolyte removal
PLANNING · EXPECTED OUTCOMES
Short-term goals
  • Client maintains a stable heart rhythm while levels are corrected
  • Electrolyte levels move toward normal within 24 to 48 hours
Long-term goals
  • Client keeps electrolytes within normal range and states early warning signs to report
ASSESSMENT
  • Continuous cardiac monitoring for peaked or flat T waves, U waves, and prolonged QT
  • Serum potassium, sodium, calcium, magnesium, BUN, and creatinine
  • Apical pulse, BP, and peripheral pulses
  • Muscle strength, cramping, and reflexes
INTERVENTIONS AND RATIONALES
INTERVENTIONRATIONALE
Give electrolyte replacement exactly as ordered, never IV push potassiumIV potassium given too fast can cause fatal dysrhythmias, so it must be diluted and run on a pump.
Check urine output before giving potassiumPotassium is cleared by the kidneys, so low output can lead to dangerous buildup.
Correct magnesium as ordered when potassium stays lowLow magnesium makes it hard for the body to hold on to potassium.
Report rhythm changes right awayEarly action prevents a minor change from becoming a lethal rhythm.

EVALUATION

  • Heart rhythm stays stable on the monitor
  • Repeat labs show levels moving toward normal
  • Client names signs like palpitations and muscle weakness to report
CARE PLAN 2 · NURSING DIAGNOSIS

Risk for Injury

Risk factors
  • Muscle weakness from low potassium
  • Confusion and seizures from abnormal sodium
  • Tetany and seizures from low calcium or magnesium
PLANNING · EXPECTED OUTCOMES
Short-term goals
  • Client remains free of falls and injury during the hospital stay
Long-term goals
  • Client stays free of injury and follows the plan to prevent repeat imbalances at home
ASSESSMENT
  • Mental status and level of consciousness every shift and with any change
  • Gait, muscle strength, and fall risk
  • Chvostek and Trousseau signs when calcium is low
  • Neuro checks when sodium is changing
INTERVENTIONS AND RATIONALES
INTERVENTIONRATIONALE
Use fall precautions and keep the bed low with the call light in reachWeakness and confusion raise fall risk.
Use seizure precautions for severe sodium, calcium, or magnesium changesSeizures can happen suddenly when these levels are very abnormal.
Correct sodium slowly as orderedFixing sodium too fast can cause brain swelling or nerve damage.
Teach foods high or low in the affected electrolyteDiet changes help keep levels stable after discharge.

EVALUATION

  • Client has no falls or injuries
  • Client is alert and oriented
  • Client lists foods to eat or limit

Practice this in Chart Review

Read the labs and orders and catch the electrolyte that needs action first.

Play Chart Review

Quick answers

Which electrolyte imbalance is the most dangerous for the heart?

Potassium. Both high and low potassium can cause life-threatening dysrhythmias, so the client needs cardiac monitoring.

What should the nurse check before giving IV potassium?

Urine output and kidney function. Potassium should only be given if the client is making urine, and it is never given IV push.

For learning only. Individualize every care plan to your client, and follow your program, current guidelines, provider orders, and facility policy.

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