Conditions › Fluids, electrolytes & acid-base
Hyperkalemia Nursing Care Plan and Interventions
Hyperkalemia is a potassium above 5.0 mEq/L; the nurse puts the client on a cardiac monitor and watches for peaked T waves. Treatment follows three steps: calcium gluconate to protect the heart, insulin with dextrose to shift potassium into cells, then binders or dialysis to remove it.
Hyperkalemia nursing care plan
| Nursing problem | Goal | Key interventions |
|---|---|---|
| Risk for decreased cardiac output (dysrhythmias) | Rhythm stable; potassium back in range. | |
| Risk for hypoglycemia (insulin and dextrose treatment) | Glucose checked and stays in range. | |
| Health maintenance: needs teaching | Limits high-potassium foods and salt substitutes as instructed. |
Problem wording is plain-language nursing diagnosis style. Your program may require NANDA-I labels and your own assessment data.
What it is
Hyperkalemia: what it is
Serum K+ above 5.0 mEq/L (normal 3.5 to 5.0). Too much K+ disrupts the heart's electrical conduction and can stop it. 1,2
Over 6.0 needs prompt treatment; with ECG changes, it is an emergency.
Causes: kept, added or shifted
Kept: kidney failure, K+-sparing diuretics, ACE inhibitors, ARBs, Addison's. Added: supplements. Shifted: acidosis, burns, cell breakdown. 2,3
Missed dialysis is a classic setup: failing kidneys can't excrete K+, so it builds up.
Assessment: what you will see
Hyperkalemia cues
Often silent until the heart is hit. Tingling, weakness, nausea, diarrhea, palpitations. Severe: flaccid paralysis. 3,4
No symptoms does not mean safe: the monitor tells you more than the client can.
Hyperkalemia ECG: peaked T
Tall, peaked T waves and a longer PR come first, then flat or lost P waves and a wide QRS. Last: sine wave, then V-fib or asystole. 3,4
High K+ peaks the T wave; as it climbs, the QRS widens.
Priority: what the nurse does first
Hyperkalemia: first actions
Continuous cardiac monitor, notify the provider at once, stop K+ going in, and anticipate IV calcium gluconate if the ECG changes. 5,3
K+ of 6.8 with a widening QRS is a cardiac emergency, not a wait-and-recheck.
Nursing interventions and treatment
Calcium gluconate: protects heart
IV calcium steadies irritable heart cells within minutes but does not lower K+. The effect lasts only 20 to 30 minutes. 5,3
Calcium buys time while other treatments shift K+ into cells or remove it.
Shift K+ in: insulin, dextrose
IV regular insulin drives K+ into cells. Dextrose goes with it to prevent hypoglycemia, so check glucose often. 4,3
Shifting is not removing: the K+ still has to leave the body.
Remove K+: binders, dialysis
Binders like sodium polystyrene sulfonate or patiromer pull K+ out in the stool. Dialysis for severe cases or kidney failure. 4,2
Expect loose stools after a binder: track them and keep the skin clean and dry.
Client teaching
Hyperkalemia teaching
Limit high-K+ foods like bananas, potatoes and spinach. Avoid salt substitutes. Keep lab checks. Report palpitations or weakness. 4,6
On an ACE inhibitor or spironolactone? Skip salt substitutes: most are high in K+.
NCLEX traps
False high: hemolyzed sample
Hemolysis, a long tourniquet or fist clenching can falsely raise K+. No risk factors and a normal ECG? Expect a redraw. 3
Assess the client and the monitor before you treat the number.
Hyperkalemia vs hypokalemia
Low K+: flat T, U wave, cramps, constipation. High K+: peaked T, wide QRS, diarrhea. Both cause weakness and deadly dysrhythmias. 4
Read the T wave: low K+ flattens it, high K+ peaks it.
Try a hyperkalemia question
NCLEX-style, approved by a licensed RN. Pick an answer, check it, then read the rationale.
Question 1 · Reduction of Risk Potential
Peaked T waves are noted on a client's cardiac monitor. Which electrolyte imbalance is most likely responsible?
Show answer and rationale
Answer: C. Peaked T waves are an early ECG sign of hyperkalemia, with the QRS complex widening as the potassium level rises further; clients with renal disease are at the highest risk. Hypokalemia produces U waves and flattened T waves, the opposite pattern. Hypercalcemia and hypernatremia do not typically cause peaked T waves; they are associated with constipation/confusion and thirst/dry mucous membranes, respectively.
Checked against: OpenStax Medical-Surgical Nursing, 10.3
Keep studying hyperkalemia in NurseLingo Pro
Pro has 14 hyperkalemia questions like these, with a rationale for every answer. Everything for hyperkalemia in one place. A free account gets 5 free opens of any condition; Pro opens all 277.
Test yourself: free fluid and electrolyte practice questions with answers and rationales.
Frequently asked questions
What are the priority nursing diagnoses for hyperkalemia?
Common nursing problems for hyperkalemia include risk for decreased cardiac output (dysrhythmias); risk for hypoglycemia (insulin and dextrose treatment); health maintenance: needs teaching. Choose the ones your assessment supports and rank airway, breathing and circulation problems first.
What does the nurse do first for hyperkalemia?
Continuous cardiac monitor, notify the provider at once, stop K+ going in, and anticipate IV calcium gluconate if the ECG changes.
What is the priority nursing intervention for hyperkalemia?
Put the client on a continuous cardiac monitor and notify the provider, because high potassium can cause deadly dysrhythmias. Stop any potassium going in. Expect IV calcium gluconate to protect the heart if the ECG changes, then insulin with dextrose to shift potassium into cells.
More fluids, electrolytes & acid-base
Related cheat sheets
Sources
- OpenStax Pharmacology for Nurses, 34.1
- OpenStax Medical-Surgical Nursing, 10.3
- merckmanuals.com
- OpenStax Pharmacology for Nurses, 5.2
- OpenStax Medical-Surgical Nursing, 35.6
- OpenStax Pharmacology for Nurses, 19.2
For study only, not medical advice. Follow your program, your facility's policies and the provider's orders.