4 A's Test for Delirium Screening
Check each criterion present. Two or more positive items → positive screen (common teaching threshold).
Calculadora
Cómo funciona
The 4 A's combine alertness, cognitive testing (AMTS), attention testing, and acute fluctuation for a rapid delirium screen.
Límites
A screen is not a diagnosis; sensitivity/specificity depends on setting and assessor training.
Solo educativo: no para decisiones clínicas.