Indications for Mechanical Thrombectomy—Too Wide or Too Narrow?

The indications for mechanical thrombectomy (MT) have expanded since the American Heart Association/American Stroke Association reported its first guidelines for MT in 2013. Multiple subsequent randomized clinical trials of MT have proved its efficacy, including the DAWN (DWI [diffusion weighted imaging] or CTP [computed tomography perfusion] Assessment with Clinical Mismatch in the Triage of Wake-up and Late Presenting Strokes Undergoing Neurointervention with Trevo) and DEFUSE-3 (Endovascular Therapy Following Imaging Evaluation for Ischemic Stroke-3) trials. The current guidelines from the American Heart Association/American Stroke Association provide class I support for the use of MT for the following indications: 1) internal carotid artery (ICA)/M1 middle cerebral artery (MCA) occlusion, symptom onset