Furosemide (Lasix) Overview

General Information

• Trade Name: Lasix
• Medication Class:
  • Therapeutic: Diuretic
  • Pharmacologic: Loop Diuretic

Indications for Use

• Edema
• Hypertension
• Congestive Heart Failure (CHF)

Mechanism of Action

• Prevents resorption of sodium and chloride in the kidneys
• Increases excretion of:
  • Water
  • Sodium
  • Chloride
  • Magnesium
  • Potassium

Side Effects and Considerations

• Common Side Effects:
  • Hypotension
  • Dry mouth
  • Excessive urination
  • Dehydration
  • Electrolyte abnormalities
  • Metabolic alkalosis
• Electrolyte Concerns:
  • Loss of sodium, chloride, magnesium, potassium
  • Risk of hypokalemia
  • Monitor electrolytes closely (CMP)

Patient Monitoring

• Monitor blood pressure, especially if given with other antihypertensives (e.g., ACE inhibitors, ARBs)
• Monitor electrolytes and EKG for hypokalemia signs
• Monitor urine output

Clinical Scenarios

• CHF Patients:
  • Low urine output is not due to low volume. Do not give fluids.
  • Administer Lasix to manage fluid overload in CHF.

Study Tips for Exams (NCLEX/Nursing Exams)

• Focus on Lasix and its effect on potassium levels (risk of hypokalemia).
• Be cautious of scenarios involving blood pressure and electrolyte management.

Additional Resources

• Visit NRSng.com/50meds for a free cheat sheet on the 50 most commonly prescribed medications.

Conclusion

• Importance of monitoring electrolytes and blood pressure in patients receiving Lasix.
• Lasix is commonly used in hospital settings, especially for CHF, hypertension, and edema management.