Nursing Care Plan for Hypokalemia
Also searched as: low potassium
🎓 Educational example. Adapt to your patient and have your instructor review it. Not medical advice.
A serum potassium level below 3.5 mEq/L, usually from GI losses, diuretics, or poor intake. Low potassium weakens skeletal muscle and can trigger fatal cardiac arrhythmias. Nursing care centers on safe potassium replacement and cardiac monitoring.
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Assessment
- Subjective: muscle weakness, leg cramps, fatigue, palpitations, constipation; reports diuretic use, vomiting, or diarrhea
- Objective: serum potassium below 3.5 mEq/L, EKG changes (flattened T waves, U waves, ST depression), irregular pulse, hypoactive bowel sounds, shallow respirations
Nursing diagnoses
Risk factors: serum potassium below 3.5 mEq/L, ongoing diuretic therapy, concurrent digoxin use
As evidenced by: weakness, fatigue, cramping with routine activity
Goals / expected outcomes
- The patient's serum potassium will return to 3.5-5.0 mEq/L within 24-48 hours of replacement therapy.
- The patient will remain free of dangerous arrhythmias during treatment.
Nursing interventions & rationale
| Intervention | Rationale |
|---|---|
| Place the patient on a cardiac monitor and watch for flattened T waves, U waves, and ectopy. | Hypokalemia irritates the myocardium; EKG changes come before life-threatening arrhythmias. |
| Give oral or IV potassium as prescribed. Never give potassium by IV push; infuse it diluted, by pump, at no more than the ordered rate (commonly 10 mEq/hr through a peripheral line). | Bolus IV potassium can stop the heart. A controlled, monitored infusion is the only safe IV route. |
| Recheck serum potassium and magnesium during replacement and confirm adequate urine output before each potassium dose. | Low magnesium blocks potassium correction, and potassium accumulates dangerously when the kidneys are not making urine. |
| Teach potassium-rich foods (bananas, oranges, potatoes, spinach) and review diuretic use with the patient. | Diet and medication adjustments prevent recurrence after discharge. |
Evaluation
- Serum potassium within 3.5-5.0 mEq/L
- EKG normalizes with no arrhythmias
- Muscle strength and bowel function improve
Sources & further reading
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Build a care plan free Preview Pro (coming soon)Hypokalemia care plan: FAQ
What is the nursing diagnosis for Hypokalemia?
Common nursing diagnoses include: Risk for unstable cardiac rhythm related to low serum potassium; Activity intolerance related to skeletal muscle weakness from potassium loss. Choose the one your patient's assessment data supports.
What are nursing interventions for Hypokalemia?
Key interventions: Place the patient on a cardiac monitor and watch for flattened T waves, U waves, and ectopy.; Give oral or IV potassium as prescribed. Never give potassium by IV push; infuse it diluted, by pump, at no more than the ordered rate (commonly 10 mEq/hr through a peripheral line).; Recheck serum potassium and magnesium during replacement and confirm adequate urine output before each potassium dose., each paired with a rationale.
Can I use this care plan for my assignment?
Use it as a study example and starting draft. Always adapt it to your specific patient and have it reviewed by your instructor. This is an educational tool, not medical advice.
For nursing education only, NOT medical advice and not a clinical decision-making tool. Nothing here should be used to assess, diagnose, or treat any real patient. Care plans and answers are unverified study drafts to review with your instructor or a licensed clinician and adapt to the individual patient and your institution’s protocols before any use.
Last reviewed 2026-07. Educational content based on standard nursing practice; not medical advice and not affiliated with NANDA-I/NIC/NOC. Always follow your institution's protocols and your instructor's guidance.