Level B: In adult patients with suspected<unk> , do not rely on current existing risk stratification instruments (eg, age, blood pressure, clinical features, duration of<unk>  and presence of diabetes [ABCD2] score) to identify<unk>  patients who can be safely discharged from the ED.
In contrast to the 2009 AHA/ASA recommendations that were based on limited research, the ABCD2 does not sufficiently identify the short-term risk for stroke to use alone as a risk-stratification instrument.
Multiple other risk-stratification instruments have been evaluated less frequently than the ABCD2 score. None have demonstrated the ability to identify individual patients at sufficiently low short-term risk for stroke to use alone as a risk-stratification instrument.
Level B: A rapid ED based diagnostic protocol can be used to safely identify patients at short-term risk for stroke.
Study based on observation units and outpatient<unk>  clinics
In contrast to the 2009 AHA/ASA recommendations that were based on limited research, the ABCD2 does not sufficiently identify the short-term risk for stroke to use alone as a risk-stratification instrument.
Multiple other risk-stratification instruments have been evaluated less frequently than the ABCD2 score. None have demonstrated the ability to identify individual patients at sufficiently low short-term risk for stroke to use alone as a risk-stratification instrument.
Study based on observation units and outpatient<unk>  clinics
Transient ischemic attack
Stroke
Ischemic stroke
Seizures/postictal paralysis 
Subarachnoid hemorrhage
Syncope
Hemorrhagic stroke
Subdural hemorrhage