Long-Term Blood Pressure Management Following Ischemic Stroke

Primary Target and Strength of Recommendation

The American Heart Association/American Stroke Association recommends a blood pressure goal of <130/80 mmHg in patients with hypertension following stroke or TIA, with a Class I, Level B-R recommendation 1
The 2021 guidelines provide a stronger recommendation than the earlier 2017 ACC/AHA guidelines, which listed this target as Class IIb (may be reasonable) 2, 3

Antihypertensive therapy should be restarted or initiated after the first few days (typically 3+ days) of the index stroke event in neurologically stable patients with BP ≥140/90 mmHg, as recommended by the American Heart Association 1
The American College of Cardiology recommends not aggressively lowering BP during the acute phase (first 48-72 hours) unless BP exceeds 220/120 mmHg, as permissive hypertension may enhance collateral flow to ischemic tissue 2, 4

The American Heart Association recommends thiazide diuretics, ACE inhibitors, and angiotensin receptor blockers (ARBs) as first-line agents for secondary stroke prevention, with Class I, Level A evidence 1, 3
Combination therapy with thiazide diuretic plus ACE inhibitor is particularly effective, as recommended by the American College of Cardiology 3, 4

For lacunar (small vessel) stroke, a target systolic BP <130 mmHg may be reasonable, with some evidence suggesting benefit from even more intensive control, as recommended by the American College of Cardiology 2, 3
For intracranial large artery atherosclerosis, a higher BP target (closer to <140/90 mmHg) may be appropriate, as excessive BP lowering could compromise cerebral perfusion in patients with severe stenosis, as recommended by the American Heart Association 1

The American College of Cardiology recommends not lowering BP too aggressively in the acute phase (first 48-72 hours), as cerebral autoregulation is impaired and systemic perfusion pressure is needed for oxygen delivery to the ischemic penumbra 2

The American Heart Association recommends frequent monitoring (monthly) until target BP is achieved and optimal therapy is established, and then regular monitoring to maintain BP control and prevent recurrent stroke 1