Eligibility CriteriaInclusion criteria:
- all patients who consent to the study and present with acute stroke treated with thrombectomy in the Mount Sinai Health System (Mount Sinai, Mount Sinai West, Mount Sinai Beth Israel, Mount Sinai St. Luke's) from 1 June 2016 - 31 December 2018.
- If the patient is pregnant
- Under age 18
- A prisoner. If timing of treatment cannot be captured, patients with these data points will be excluded.