Under what circumstances would you give nimodipine to patients with non-traumatic, non-anuerysmal subarchnoid hemorrhage?

In my practice, the decision to use nimodipine in non-traumatic, non-aneurysmal subarachnoid hemorrhage is largely guided by the hemorrhage pattern and perceived vasospasm risk.

For classic perimesencephalic SAH with low blood burden and reassuring vascular imaging, I do not routinely continue nimod...