A 55-year-old woman with aneurysmal SAH (Hunt-Hess grade 3, Fisher grade 3) had successful coil embolization on day 1. On day 5, she develops new focal deficits and TCD shows elevated MCA velocities > 200 cm/s. What is the standard nimodipine protocol for vasospasm prophylaxis? When do we escalate to induced hypertension (HHH therapy) vs intra-arterial verapamil or balloon angioplasty?
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