09/02/2026
Potassium changes can show up on the ECG—and recognizing them quickly matters! ⚡❤️
⬇️ Hypokalemia: think flattened T waves, ST depression and prominent U waves.
⬆️ Hyperkalemia: think tall peaked T waves → PR prolongation → widened QRS → loss of P waves → possible sine-wave pattern as severity progresses.
🚨 Severe potassium abnormalities can cause life-threatening dysrhythmias and require prompt assessment and treatment.
Save this ECG cheat sheet for cardiac, electrolyte, and NCLEX review! 🩺📚