Vasospasm is a potentially devastating complication of subarachnoid hemorrhage due to a ruptured aneurysm. The likelihood of vasospasm can be calculated using the modified Fisher scale. Grades from 0 to 4 are calculated based on the presence/amount of subarachnoid and intraventricular blood: the higher the grade, the more likely the patient is to have vasospasm. In our case, the presence of "thick" SAH and intraventricular hemorrhage results in a grade of 4, which corresponds to a 40% risk of symptomatic vasospasm.