Clinical Scenario

Subarachnoid hemorrhage demands urgent haemodynamic stabilisation. The central challenge is holding blood pressure within a precise therapeutic window — preventing rebleeding driven by severe hypertension, while strictly avoiding hypotension that would impair cerebral perfusion. In patients receiving anticoagulant therapy, reversal of anticoagulation becomes an immediate concurrent priority.

Treatment Approach (partial)

Management involves frequent blood pressure monitoring and the use of short-acting medication(s) to control BP, with a graduated reduction strategy when pressures reach a critical upper threshold — while maintaining a firm lower perfusion limit. Patients on anticoagulants require emergency reversal with appropriate agents. The full evidence-based regimen, including agent selection and clinical sequencing, is available in the structured protocol below.

Clinical Targets

Avoid severe hypertension — systolic BP should not exceed 180–200 mm Hg
Strictly avoid hypotension — mean arterial pressure must remain at or above 65 mm Hg

References

DOI: 10.1161/str.0000000000000436

In patients with aSAH and unsecured aneurysm, frequent blood pressure (BP) monitoring and BP control with short-acting medication(s) is recommended to avoid severe hypotension, hypertension, and BP variability.
In patients with aSAH who are receiving anticoagulants, emergency anticoagulation reversal with appropriate reversal agents should be performed to prevent rebleeding.
Hence, this writing group recommends gradual reduction of BP when patients are severely hypertensive (>180–200 mm Hg) but ensuring strict avoidance of hypotension (mean arterial pressure <65 mm Hg) and closely monitoring the neurological examination while lowering the BP.

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Blood Pressure Management and Anticoagulation Reversal in Subarachnoid Hemorrhage

References