Correction to: 2018 Guidelines for the Early Management of Patients With Acute Ischemic Stroke: A Guideline for Healthcare Professionals From the American Heart Association/American Stroke Association.

In the article by Powers et al, “2018 Guidelines for the Early Management of Patients With Acute Ischemic Stroke: A Guideline for Healthcare Professionals From the American Heart Association/American Stroke Association,” which published ahead of print January 24, 2018, and appeared in the March 2018 issue of the journal (Stroke. 2018;49:e46–e110. DOI: 10.1161/ STR.0000000000000158), a few corrections were needed. 1. On page e46, the text above the byline read: Reviewed for evidence-based integrity and endorsed by the American Association of Neurological Surgeons and Congress of Neurological Surgeons Endorsed by the Society for Academic Emergency Medicine It has been updated to read: Reviewed for evidence-based integrity and endorsed by the American Association of Neurological Surgeons and Congress of Neurological Surgeons Endorsed by the Society for Academic Emergency Medicine and Neurocritical Care Society The American Academy of Neurology affirms the value of this guideline as an educational tool for neurologists. 2. On page e60, in the section “2.2. Brain Imaging,” in the knowledge byte text below recommendation 12: • The seventh sentence read, “Therefore, only the eligibility criteria from these trials should be used for patient selection.” It has been updated to read, “Therefore, only the eligibility criteria from one or the other of these trials should be used for patient selection.” • The eighth sentence read, “...at this time, the DAWN and DEFUSE 3 eligibility should be strictly adhered to in clinical practice.” It has been updated to read, “...at this time, the DAWN or DEFUSE 3 eligibility should be strictly adhered to in clinical practice.” 3. On page e73, in the section “3.7. Mechanical Thrombectomy,” recommendation 8 read, “In selected patients with AIS within 6 to 24 hours....” It has been updated to read, “In selected patients with AIS within 16 to 24 hours....” 4. On page e73, in the section “3.7. Mechanical Thrombectomy,” in the knowledge byte text below recommendation 8: • The seventh sentence read, “Therefore, only the eligibility criteria from these trials should be used for patient selection.” It has been updated to read, “Therefore, only the eligibility criteria from one or the other of these trials should be used for patient selection.” • The eighth sentence read, “...at this time, the DAWN and DEFUSE-3 eligibility should be strictly adhered to in clinical practice.” It has been updated to read, “...at this time, the DAWN or DEFUSE-3 eligibility should be strictly adhered to in clinical practice.” 5. On page e76, in the section “3.10. Anticoagulants,” in the knowledge byte text below recommendation 1, the third sentence read, “...(LMWH, 64.2% versus aspirin, 6.52%; P=0.33).” It has been updated to read, “...(LMWH, 64.2% versus aspirin, 62.5%; P=0.33).” These corrections have been made to the current online version of the article, which is available at http://stroke.ahajournals.org/lookup/doi/10.1161/STR.0000000000000158. Correction