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 nimodipine beyond the inpatient setting, and in select truly benign cases, may forgo it altogether. The available evidence for routine nimodipine in this population is limited, and delayed cerebral ischemi...