CAM-ICU Delirium Assessment
Identifies delirium in critically ill patients using four clinical features.
When to use
Adults in intensive care with suspected delirium or fluctuating mental status.
Pearls and pitfalls
- CAM-ICU is positive with acute onset or fluctuation, inattention and either altered consciousness or disorganized thinking.
- Inattention is assessed with the letters or pictures test according to patient ability.
- The test should be repeated through the day because delirium fluctuates.
- Deep sedation and language barriers can prevent assessment and should be recorded.
Negative result
Delirium absent on this test
Reassess if mental status changes or fluctuates.
Formula
Positive if acute onset or fluctuation and inattention are present, associated with altered consciousness or disorganized thinking.
Evidence
Delirium assessment method validated in mechanically ventilated patients, with good interrater reliability.
References
- Ely EW, Inouye SK, Bernard GR, et al. Delirium in mechanically ventilated patients: validity and reliability of the confusion assessment method for the intensive care unit (CAM-ICU). JAMA. 2001;286(21):2703-2710. doi:10.1001/jama.286.21.2703
Frequently asked questions
What is CAM-ICU Delirium Assessment?
Identifies delirium in critically ill patients using four clinical features. Adults in intensive care with suspected delirium or fluctuating mental status.
How is the result calculated?
Positive if acute onset or fluctuation and inattention are present, associated with altered consciousness or disorganized thinking.
How should the result be interpreted?
Delirium assessment method validated in mechanically ventilated patients, with good interrater reliability.
What are the sources?
Ely EW, Inouye SK, Bernard GR, et al. Delirium in mechanically ventilated patients: validity and reliability of the confusion assessment method for the intensive care unit (CAM-ICU). JAMA. 2001;286(21):2703-2710.