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      Calc Function

    • Calcs that help predict probability of a diseaseDiagnosis
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    Chief Complaint


    Organ System


    Patent Pending

    Confusion Assessment Method for the ICU (CAM-ICU)

    Establishes ability to detect delirium in high risk settings.
    When to Use
    Why Use

    The CAM-ICU should be used daily on all patients admitted to the ICU even if they are mechanically ventilated.

    • Delirium has been shown to be associated with worse outcomes in critically ill patients. It remains underdiagnosed given its sometimes subtle presentation.
    • The CAM-ICU score is a validated and commonly used score to help monitor patients for the development or resolution of delirium.
    • It is an adaptation of the Confusion Assessment Method (CAM) score for use in ICU patients.
    • Since the first step of the score consists of identifying an “acute change from mental status baseline”, it may be difficult to use in patients in whom the neurologic baseline is unknown.
    • If a patient’s neurologic baseline changes during the course of his hospitalization (such as a new CVA for example), then the new baseline should be used for any new assessment.
    • In order for the CAM-ICU score to be accurate, patients should not be sedated, or have a RASS of 0.
    • Delirium affects up to 89% of ICU patients and has been shown to result in higher mortality. The relative risk of death increases for each day the patient remains delirious. Prompt recognition of this condition is therefore important.
    • To this day delirium remains a clinical diagnosis. Few clinical tools have been demonstrated to be useful in helping identify the presence or absence of delirium.
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    • When applied, the CAM-ICU will provide a qualitative result of “delirium present” or “delirium absent”.
    • Patients identified as suffering from delirium will be investigated and managed accordingly.
    • The CAM-ICU should continue to be used daily even in patients that are delirious in order to monitor for resolution of the condition.

    Critical Actions

    • The management of delirium is an extensive topic that is beyond the scope of this discussion.
    • Screen all ICU patients daily for delirium using a validated clinical tool such as the CAM-ICU.
    • The screening is best performed by individuals trained in the proper usage of this method such as ICU nurses.
    Content Contributors
    About the Creator
    Dr. Sharon K. Inouye
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