Furosemide nursing considerations
Furosemide's nursing considerations revolve around potassium: it is a potent loop diuretic that causes hypokalemia, so monitor the potassium level, teach potassium-rich foods, and watch for muscle cramps and weakness. Give IV furosemide slowly to avoid ototoxicity, weigh the patient daily, and dose it in the morning.
What furosemide does, and why the NCLEX tests it
Furosemide (Lasix) blocks sodium, potassium, and chloride reabsorption in the loop of Henle, producing the most potent diuresis of any diuretic. It is used for edema and heart-failure fluid overload. The whole game on the exam is what it does to potassium, plus the ototoxicity risk with rapid IV push.
Key nursing considerations for furosemide
Monitor potassium and report muscle cramps, weakness, or an irregular pulse. Low potassium also worsens digoxin toxicity.
Rapid IV push or high doses can cause ototoxicity (hearing loss and tinnitus); infuse slowly.
Teach bananas, oranges, and potatoes unless contraindicated.
Weigh at the same time daily; a rapid gain signals fluid retention.
Give in the morning to avoid nighttime urination, and use caution with a sulfa allergy.
How the NCLEX turns furosemide into a question
Report muscle cramps or weakness and an irregular pulse (hypokalemia), and hearing changes or ringing in the ears.
Priority check potassium before and during therapy, give IV furosemide slowly, and monitor daily weight and intake and output.
Lab potassium (watch for hypokalemia), sodium, and kidney function.
Teach take it in the morning, eat potassium-rich foods, report muscle cramps or weakness, weigh yourself daily, and rise slowly.
A potassium of 2.9 in a patient on furosemide who is also on digoxin. Recognize that low potassium raises the risk of digoxin toxicity; hold, notify, and replace potassium.
Quick answers
What electrolyte problem does furosemide cause?
Hypokalemia (low potassium). Monitor the level, teach potassium-rich foods, and report muscle cramps, weakness, or an irregular pulse.
Why is IV furosemide given slowly?
A rapid IV push can cause ototoxicity, meaning hearing loss and ringing in the ears, so it is infused slowly.
When should furosemide be taken?
In the morning, so the increased urination does not disrupt sleep.
Keep studying
These pages build on each other. Work through the related classes, then pressure-test yourself against the free cheat sheet and the full guide.
Digoxin
Apical pulse, the 0.8 to 2 level, the potassium trap, and DigiFab.
Read the guide →Metoprolol
Hold for HR under 60, never stop abruptly, masks hypoglycemia.
Read the guide →Carvedilol
Beta-blocker holds plus give-with-food and start-low heart-failure care.
Read the guide →Lisinopril
The dry cough, the angioedema emergency, and high potassium.
Read the guide →All high-yield drug classes
The seven most-tested classes on one page, each decoded the same way.
Open the overview →Antidotes & lab values cheat sheet
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Every high-yield class, decoded the same way
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