Blood Pressure Management in Postural Orthostatic Tachycardia Syndrome (POTS)

Understanding BP Behavior in POTS

In POTS, blood pressure typically remains normal or even elevated during orthostatic stress, and the defining feature is inappropriate tachycardia (≥30 bpm increase within 10 minutes of standing) without orthostatic hypotension, so BP management focuses on preventing supine hypertension from treatments rather than raising BP, as recommended by the European Society of Cardiology and the American College of Cardiology 1, 2
POTS is explicitly diagnosed only when orthostatic hypotension is absent, defined as systolic BP drop <20 mmHg and diastolic BP drop <10 mmHg within 3 minutes of standing, according to the European Heart Journal and the Journal of the American College of Cardiology 1, 2, 3
Syncope in POTS is rare and typically occurs only when vasovagal reflex activation is superimposed, not from the POTS mechanism itself, as stated by the European Heart Journal and the American College of Cardiology 1, 4

If orthostatic hypotension is present (BP drop ≥20/10 mmHg), the patient does NOT have POTS, and other conditions such as delayed orthostatic hypotension, classical orthostatic hypotension, or orthostatic vasovagal syncope should be considered, as recommended by the European Society of Cardiology and the American College of Cardiology 1, 2
Delayed orthostatic hypotension occurs beyond 3 minutes of standing with progressive BP fall and may trigger secondary reflex syncope, according to the European Heart Journal 1

Avoid testing after large carbohydrate-rich meals, which cause splanchnic vasodilation and can precipitate orthostatic symptoms even without true hypotension, as stated by the American College of Cardiology 4

Do not confuse postprandial hypotension (which occurs in autonomic failure) with POTS, as POTS is defined by tachycardia without hypotension, as recommended by the American College of Cardiology 4