Target Blood Pressure for Intracerebral Hemorrhage

Acute Phase Management (First 24 Hours)

The American Heart Association/American Stroke Association recommends targeting a systolic blood pressure of 140 mm Hg (acceptable range 130-150 mm Hg) for patients with acute intracerebral hemorrhage presenting with systolic blood pressure between 150-220 mm Hg, initiated within 2 hours of symptom onset and achieved within 1 hour of treatment initiation, based on the INTERACT2 and ATACH-2 trials 1
The American Heart Association/American Stroke Association suggests maintaining blood pressure in the range of 130-150 mm Hg after achieving initial target, based on the 2022 AHA/ASA guidelines 1
Initiation of treatment within 2 hours of intracerebral hemorrhage onset is recommended, as earlier treatment initiation correlates with reduced hematoma expansion and improved functional outcomes 1
Achievement of target blood pressure within 1 hour of starting antihypertensive therapy is recommended 1

The American Heart Association/American Stroke Association recommends avoiding lowering systolic blood pressure below 130 mm Hg, as this is potentially harmful (Class III: Harm recommendation) 1
Smooth, sustained blood pressure control is essential, and minimizing blood pressure variability is recommended, as high variability is independently associated with poor outcomes 1

The safety and efficacy of intensive blood pressure lowering are not well established in patients with large or severe intracerebral hemorrhage or those requiring surgical decompression, and more conservative blood pressure targets should be used in these patients 1
The evidence base primarily applies to patients presenting with systolic blood pressure 150-220 mm Hg, and caution should be exercised when applying intensive blood pressure lowering to patients with systolic blood pressure above 220 mm Hg 1

The INTERACT2 trial showed a trend toward benefit on the primary outcome (OR 0.87, 95% CI 0.75-1.01; P=0.06) and significant benefit on ordinal analysis of modified Rankin Scale (P=0.04) 2
The optimal lower threshold for systolic blood pressure is 140 mm Hg, based on the synthesis of INTERACT2 and ATACH-2 trial results 1

The American Heart Association recommends targeting an SBP <140 mm Hg for patients with acute intracerebral hemorrhage presenting with systolic blood pressure between 150-220 mm Hg, initiated within 6 hours of symptom onset and maintained for at least 7 days 3, 4, 5
Targeting an SBP <140 mm Hg is safe (Class I, Level A evidence) and can be effective for improving functional outcome (Class IIa, Level B evidence) in patients with acute intracerebral hemorrhage 3, 4, 5
The INTERACT2 trial demonstrated better functional recovery with intensive BP lowering compared to standard treatment (SBP <180 mm Hg) in 2839 patients with acute intracerebral hemorrhage 3, 4, 5

Initiate BP lowering within 6 hours of ICH onset for optimal benefit, and maintain target SBP for at least 7 days after ICH onset 3, 4, 5
Monitor BP continuously via arterial line in patients requiring continuous IV antihypertensives, and reassess neurological status every 15 minutes during active BP reduction 6, 7, 8

Avoid reducing SBP by >20% in the first 48 hours, as this is independently associated with renal adverse events and worse functional outcomes 6, 7, 8, 9
Avoid dropping SBP >70 mm Hg within 1 hour in patients presenting with SBP ≥220 mm Hg 10
Maintain cerebral perfusion pressure (CPP) ≥60 mm Hg at all times 6, 7, 8, 9

Transition to a long-term target of <130/80 mm Hg for secondary prevention of ICH recurrence after the acute phase (>7 days) 11