A client taking furosemide reports muscle weakness and irreg… | MyMerci
Adverse Effects/Contraindications/InteractionsPPT
Question
A client taking furosemide reports muscle weakness and irregular heartbeats. Which laboratory value should the nurse check first?
1Hemoglobin
2Serum calcium
3Platelet count
4Serum potassium✓ Correct answer
Explanation
Furosemide is a loop diuretic that can cause potassium loss. Muscle weakness and irregular heartbeats may indicate hypokalemia, which can lead to dysrhythmias. Serum potassium is the priority laboratory value to check.
In-depth explanation
Clinical Judgment Loop diuretic symptoms often point toward electrolyte loss.
Memory Tip Furosemide flushes potassium.
Clinical scenario
Clinical Practice Guide Loop diuretic monitoring includes weight, intake/output, blood pressure, renal function, and electrolytes including potassium.
Caution Irregular heartbeat with possible hypokalemia needs prompt assessment.
Key concepts
Furosemide — A loop diuretic used to remove excess fluid.
Hypokalemia — Low serum potassium that can cause weakness and dysrhythmias.
Loop Diuretic — A diuretic class that increases urine output and electrolyte loss.