Use of Furosemide for Blood Pressure Reduction

Hemodynamic Effects of Furosemide

• IV furosemide administration (1.3 mg/kg) results in a transient (1-2 hour) worsening of hemodynamics, including increased heart rate, mean arterial pressure, left ventricular filling pressure, and decreased stroke volume 1, 4
• Furosemide initially lowers stroke volume and increases systemic vascular resistance 5
• While furosemide can significantly lower mean arterial pressure compared to baseline, this effect is not consistent or predictable 2

Furosemide in Hypertension Management

• Nitrates have shown improved cardiac output compared to furosemide in randomized controlled trials 3

Preferred Agents vs. Furosemide for Blood Pressure Control

• Nitrates were more effective at improving hemodynamics in studies comparing nitrates with furosemide for acute heart failure with pulmonary edema 6

Risks and Concerns with Furosemide for Blood Pressure Control

• Higher loop diuretic doses are associated with worsening renal function during hospitalization 4, 6
• Worsening renal function is associated with increased in-hospital mortality (OR=2.7, 95% CI 1.6-4.6) 6
• Diuretics should be administered judiciously given the potential association between diuretics, worsening renal function, and long-term mortality 6

Special Populations

• In patients with cirrhosis and ascites, the combination of spironolactone and furosemide is typically recommended rather than furosemide alone 7
• In patients with cardiac amyloidosis and volume overload, orally administered torsemide or bumetanide may be more effective than oral furosemide when there is significant intestinal wall edema 8