A multi-center, observational registry study intended to assess the HDE-approved NeVa VS cerebral artery dilation device in patients with symptomatic cerebral vasospasm caused by aneurysmal subarachnoid hemorrhage (aSAH)

Inclusion Criteria:

1. Age ≥22
2. Symptomatic cerebral vasospasm secondary to aneurysmal subarachnoid hemorrhage (aSAH) in the internal carotid artery (ICA), middle cerebral artery (MCA), anterior cerebral artery (ACA), posterior cerebral artery (PCA), or basilar artery (BA)
3. Vessel dilation procedure was performed with the NeVa VS
4. Subject or legal representative is able and willing to give informed consent within 3 days (72 hours) post-index procedure

Exclusion Criteria:

• None

subjects with cerebral vasospasm