Which strategy is recommended when non-selective peripheral alpha-1 blockers are used with loop diuretics?

• A. Always combine with loop diuretics for efficacy
• B. Use alternative antihypertensive
• C. Avoid in older women, unless conditions warrant both drugs
• D. Do not monitor urinary symptoms

Answer: (C)

Nonselective peripheral alpha-1 blockers can cause orthostatic hypotension, especially after the first dose. Loop diuretics lower blood volume, which can amplify those drops in blood pressure. In older adults, and particularly in older women who are more prone to falls and frailty, this combination raises the risk of dizziness, fainting, and injury. Because of this safety concern, Beers Criteria recommends avoiding this drug pairing in older women unless there is a compelling, clearly justified reason to use both. If a combination is necessary, it should be approached with caution, starting at low doses, monitoring blood pressure and symptoms closely, and considering alternatives when possible.