Diuresis in hemodynamically compromised patients: continuous furosemide infusion

Area of Science:

• Cardiology
• Nephrology
• Pharmacology

Background:

• Hemodynamic compromise is a significant concern in patients recovering from cardiac surgery.
• Diuresis is often necessary to manage fluid balance in these critical patients.
• Traditional diuretic methods may have limitations in achieving sustained diuresis.

Purpose of the Study:

• To evaluate the efficacy and safety of continuous furosemide infusion for diuresis in post-cardiac surgery patients.
• To assess the impact of continuous furosemide infusion on hemodynamic parameters.
• To determine the required potassium replacement during continuous furosemide infusion.

Main Methods:

• Continuous infusion of furosemide was administered to stable but hemodynamically compromised patients.
• A loading dose of 20 mg was followed by an infusion of 4-10 mg/hour.
• Urine output, potassium levels, and hemodynamic parameters (cardiac index, central venous pressure, diastolic pulmonary artery pressure) were monitored.

Main Results:

• Mean 24-hour urine output averaged 5.7 L (238 mL/h).
• Significant potassium replacement (115 mmol) was required.
• No significant changes were observed in cardiac index, central venous pressure, or diastolic pulmonary artery pressure.
• Hemodynamic support could be reduced in patients.

Conclusions:

• Continuous furosemide infusion is a simple and effective method for achieving diuresis in select post-cardiac surgery patients.
• This method is reliable for managing fluid balance without compromising hemodynamic stability.
• It offers a viable alternative for diuresis in this patient population.