ROSIER tool

Rule Out Stroke In the Emergency Room


Rosier scale to differentiate stroke and "stroke mimics"

Has there been loss of consciousness or syncope

Y (-1)

N (0)

Has there been seizure activity

Y (-1)

N (0)

Is there a new onset (or waking from sleep)?

i

Asymmetric facial weakness

Y (+1)

N (0)

ii

Asymmetric arm weakness

Y (+1)

N (0)

iii

Asymmetric leg weakness

Y (+1)

N (0)

iv

Speech disturbance

Y (+1)

N (0)

v

Visual field defect

Y (+1)

N (0)

Stroke is likely if total score > 0

Scores of < / = 0 have low probability of stroke but not excluded


Content by Dr Íomhar O' Sullivan 14/03/2008, 29/04/2009. Reviewed Dr Chris Luke 04/08/2010. Last review Dr ÍOS 16/09/19