Management of Hypertension and Heart Failure with Diuretics

Introduction to Diuretic Combinations

The American College of Cardiology/American Heart Association (ACC/AHA) guidelines caution against combining multiple agents that affect the same blood pressure control systems, due to increased risk of severe electrolyte disturbances and renal dysfunction 1

The European Society of Cardiology (ESC) recommends a stepwise approach to hypertension management, starting with a two-drug combination and adding agents as needed, with spironolactone considered as a fourth agent if necessary 2
The ACC/AHA recommends adding spironolactone to a three-drug regimen for resistant hypertension, and reserving hydralazine for cases where other options have failed 1, 3

For patients with heart failure with reduced ejection fraction (HFrEF), the American Heart Association (AHA) recommends starting with ACE inhibitors/ARBs and beta-blockers, and adding spironolactone or eplerenone for NYHA class II-IV symptoms, with loop diuretics used for volume control 4, 5
The AHA also recommends hydralazine plus isosorbide dinitrate for African American patients with HFrEF 4, 5

The AHA recommends loop diuretics for acute volume overload in heart failure, and avoiding combination of multiple potassium-wasting diuretics when possible, with close monitoring of potassium levels when using spironolactone 6

When using a combination of diuretics, it is recommended to monitor electrolytes, renal function, and blood pressure closely, and to watch for signs of volume depletion, with consideration of inpatient monitoring when initiating this combination 1, 2, 3, 4, 5, 6
Medications should be held in patients with:
The American College of Cardiology recommends avoiding the routine combined use of ACE inhibitor, ARB, and aldosterone antagonist due to increased risk of renal dysfunction and hyperkalemia 6
Patients on all three medications should be monitored more frequently for hypotension and renal dysfunction, and blood pressure and renal function should be checked before each dose, with specific guidelines for systolic BP <90 mmHg, 90-100 mmHg, and creatinine >2.5 mg/dL (men) or >2.0 mg/dL (women) 7, 8, 4
Patients should be reassessed within 24-48 hours after holding medications to determine if it is safe to restart them 10
For patients with initial contraindications to beta-blockers, reevaluation is recommended to determine subsequent eligibility, and when restarting metoprolol, lower doses (25 mg for tartrate or 50 mg for succinate) should be used, with a strength of evidence based on expert opinion 7, 8