WHAT IS THE 4AT?

The 4AT is a validated rapid assessment test for delirium and cognitive impairment. It is widely used in routine clinical practice in the UK and internationally.

The 4AT is free to download and use.


Key features:  

♦  brevity (<2 minutes)

♦  no special training required

♦  allows for assessment of ‘untestable’ patients (where cognitive testing or interview is not possible because of drowsiness or agitation)

  incorporates brief cognitive test items

The 4AT is designed to be used by any health professional at first contact with the patient, and at other times when delirium is suspected. The 4AT incorporates the Months Backwards test and the Abbreviated Mental Test - 4  (AMT4), which are validated short tests for cognitive impairment. This provides basic cognitive testing, aimed at detecting moderate-severe cognitive impairment, alongside assessment for delirium. See the guidelines on the 4AT form for more information.

 

BACKGROUND AND AUTHORS

NOTES ON REVISIONS

REFERENCES

 

Disclaimer: responsibility for the interpretation of scores and any actions rests with the clinical team using the 4AT. As per accepted clinical practice, a diagnosis of delirium should always be made following thorough clinical assessment by suitably qualified staff.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This website is designed and maintained by Alasdair MacLullich.