Orthostatic Hypotension Management and Medication Considerations

Medication Classes Associated with Orthostatic Hypotension

Alpha-1 blockers, such as doxazosin, prazosin, and terazosin, are strongly associated with orthostatic hypotension, especially in older adults 1
Centrally-acting antihypertensives, including clonidine, methyldopa, and guanfacine, commonly cause orthostatic hypotension 1
Diuretics, particularly when causing volume depletion, are frequent contributors to orthostatic symptoms 1
Vasodilators, such as hydralazine and minoxidil, can significantly lower blood pressure upon standing 1
The American College of Cardiology recommends considering diuretics and vasodilators as potential causes of orthostatic hypotension 2

When orthostatic hypotension is suspected to be medication-related, identify and discontinue medications that exacerbate postural symptoms as first-line treatment 1
Consider switching to medications with minimal impact on orthostatic blood pressure rather than simply reducing doses 1
For patients requiring antihypertensive therapy who have orthostatic hypotension, long-acting dihydropyridine calcium channel blockers should be considered first-line 1
RAS inhibitors, such as ACE inhibitors or ARBs, are also recommended as first-line agents with minimal orthostatic effects 1
Beta-blockers should be avoided unless there are compelling indications 1

Gradual staged movements with postural change can help minimize blood pressure drops 1
Physical counter-maneuvers, such as leg crossing and muscle tensing, can be effective in managing orthostatic symptoms 1
Increased fluid and salt intake can help maintain adequate blood volume 1

When evaluating orthostatic hypotension in patients, look for other more likely causes, including other medications, volume depletion, or neurogenic causes 1
Drug-induced autonomic failure is a frequent cause of orthostatic hypotension, with diuretics and vasodilators being important agents in this setting 2
Before starting or intensifying any medication in patients with suspected orthostatic hypotension, test for orthostatic changes by measuring blood pressure after 5 minutes of sitting/lying and then 1 and/or 3 minutes after standing 1