Feature 1: acute onset or fluctuating course


Check here it present

Is the patient different than his /her baseline mental status?


Has the patient had any fluctuation on a sedation/ level of consciousness

Either question yes

Feature 2: inattention

Direction: say to the patient, “I am going to read you a series of 10 letters. Whenever you hear the letter’ A’, indicate by squeezing my hand”. Read letter from the following letter list in a normal tone 3 seconds apart.

SEVEHAAT or CASABLANCA or ABADBADAAY Errors are counted when patient fails to squeeze on the letter “A” and when the patient squeezes on any letter other than “A”.

Number of Errors >2

Feature 3: Altered level of consciousness