Right 2 Falls before 10 s 3 No effort against gravity 6 Motor function (leg) 0 No drift a. Left 1 Drift before 5 s b. Right 2 Falls before 5 s 3 No effort against gravity 7 Limb ataxia 0 No ataxia 8 Sensory 0 No sensory loss 1 Mild sensory loss 2 Severe sensory loss 3 Mute or global aphasia 11 Extinction or inattention modality lost) lost) Adapted from Lyden et al.74 Copyright 1994, American Heart Association, Inc. Table 4. Continued Tested Item Title Responses and Scores 2.2. Head and Neck Imaging 2.2.1. Initial Imaging COR LOE New, Revised, or Unchanged All patients with suspected acute stroke should receive emergency brain imaging evaluation on first arrival to a hospital before initiating any specific therapy to treat AIS. I A Recommendation reworded for clarity from 2013 AIS Guidelines. COR and LOE unchanged. See Table XCV in online Data Supplement 1 for original wording. Systems should be established so that brain imaging studies can be performed as quickly as possible in patients who may be candidates for IV fibrinolysis or mechanical thrombectomy or both. I B-NR New recommendation. The benefit of IV alteplase is time dependent, with earlier treatment within the therapeutic window leading to bigger A brain imaging study to exclude ICH is recommended as part of the initial evaluation of patients who are potentially eligible for these therapies. 