Management of Exertional Dizziness in Elderly Patients

Diagnosis and Assessment

The American Academy of Otolaryngology-Head and Neck Surgery recommends performing a Dix-Hallpike test to exclude benign paroxysmal positional vertigo (BPPV), which can present with positional dizziness but would show rotatory vertigo with specific head movements rather than exertional symptoms 2
Orthostatic hypotension is defined as a drop of ≥20 mmHg systolic or ≥10 mmHg diastolic, and can be diagnosed by measuring orthostatic vital signs properly, having the patient lie or sit for 5 minutes, then measuring blood pressure at 1 and 3 minutes after standing 1

The European Society of Cardiology recommends RAS blockers (like valsartan) combined with dihydropyridine CCBs (like amlodipine) as preferred first-line combinations, and this combination alone may provide adequate blood pressure control 3
Chlorthalidone has a particularly long half-life (40-60 hours) and potent diuretic effect, making it more likely to cause volume depletion and orthostatic hypotension in elderly patients compared to other thiazides 4, 5

Increasing fluid and salt intake is first-line treatment for orthostatic hypotension and should be implemented immediately, targeting 2-3 liters of fluid daily and liberalizing salt intake unless contraindicated by heart failure 1
The American College of Cardiology recommends teaching patients to rise slowly from sitting to standing, pause before walking, and perform leg crossing or muscle tensing when symptoms occur 1
Encouraging continued physical activity as tolerated can help avoid deconditioning, which worsens orthostatic intolerance 6

Midodrine is the only FDA-approved medication for symptomatic orthostatic hypotension, and can be started at 10 mg three times daily at 4-hour intervals during daytime hours when upright activity is needed 1
Monitoring for supine hypertension is important, as elderly patients with orthostatic hypotension often have elevated supine blood pressure, which may require evening administration of shorter-acting antihypertensives like atenolol or metoprolol tartrate if blood pressure is elevated at bedtime 6