Orthostatic Hypotension Management

Initial Assessment and Stabilization

The American Heart Association recommends positioning the patient supine immediately to restore cerebral perfusion and relieve symptoms, as lethargy, weakness, and lightheadedness upon postural change indicate inadequate cerebral blood flow 1, 2
The European Society of Cardiology suggests assessing vital signs in the supine position first, then measuring blood pressure and heart rate at 1 minute and 3 minutes after sitting or standing to confirm orthostatic hypotension (≥20/10 mmHg drop) 1, 2
Evaluation for acute reversible causes, such as dehydration, acute blood loss, medications (diuretics, vasodilators, antihypertensives), or recent illness, is crucial in patients with orthostatic hypotension 1, 4, 5

The American College of Cardiology recommends administering oral or intravenous fluid bolus immediately if dehydration is suspected or confirmed, which is a Class I recommendation for acute dehydration 6, 5, 7
Acute water ingestion (≥480 mL) provides temporary relief within 30 minutes through a sympathetically-driven pressor effect in neurogenic orthostatic hypotension, which is a Class I recommendation 1, 7
Review and reduction or withdrawal of hypotensive medications, including diuretics, vasodilators, negative chronotropes, and sedatives, where safe to do so, is recommended (Class IIa recommendation) 1, 6, 5, 7

Patients on multiple medications, such as diuretics, vasodilators, and antihypertensives, require close supervision during medication adjustment 5
Those with neurodegenerative disorders, such as Parkinson's disease, multiple system atrophy, and pure autonomic failure, may have neurogenic orthostatic hypotension requiring specific pharmacologic interventions 1, 7
Avoid aggressive fluid resuscitation in patients with heart failure, uncontrolled hypertension, or chronic kidney disease, as increased salt and fluid intake is contraindicated in these populations 5