. 2022 Sep;22(5):392–395. doi: 10.7861/clinmed.2022-0346

Table 1.

Rapid delirium screening tools

Assessment tool	Questions	Outcome
Short Confusion Assessment Method¹⁰	Acute onset and fluctuating course Inattention Disorganised thinking Altered levels of consciousness	Positive for delirium if both ‘1’ and ‘2’ are present, with at least one of ‘3’ or ‘4’.
4 ‘A's Test¹¹	Alertness: Normal = 0 Mild sleepiness for <10 seconds after waking, then normal = 0 Clearly abnormal = 4 AMT-4 (age, date of birth, place, year): No mistakes = 0 1 mistake = 1 ≥2 mistakes = 2 Attention (list months of the year in reverse): Lists ≥7 months correctly = 0 Lists <7 months, or refuses to start = 1 Untestable = 2 Acute change or fluctuating course: No = 0 Yes = 4	Score ≥4 is possible delirium and/or cognitive impairment

Assessment tool

Questions

Outcome

Short Confusion Assessment Method¹⁰

Positive for delirium if both ‘1’ and ‘2’ are present, with at least one of ‘3’ or ‘4’.

4 ‘A's Test¹¹

Normal = 0
Mild sleepiness for <10 seconds after waking, then normal = 0
Clearly abnormal = 4

No mistakes = 0
1 mistake = 1
≥2 mistakes = 2

Lists ≥7 months correctly = 0
Lists <7 months, or refuses to start = 1
Untestable = 2

No = 0
Yes = 4

Score ≥4 is possible delirium and/or cognitive impairment

AMT-4 = Abbreviated Mental Test-4.