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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Crit Care Med. 2013 Sep;41(9):2196–2208. doi: 10.1097/CCM.0b013e31829a6f1e

Figure 1.

Figure 1

The Confusion Assessment Method for the ICU (CAM-ICU). The CAM-ICU assesses for the four features of delirium: Feature 1 is an acute change in mental status or a fluctuating mental status, Feature 2, is inattention, Feature 3, is altered level of consciousness and Feature 4, is disorganized thinking. Only patients who are arousable to voice can be assessed for delirium (Richmond Agitation Sedation Scale [RASS] −3, Sedation Agitation Scale [SAS] 3 or more alert). A patient screens positive for delirium if Features 1 and 2 and either Feature 3 or Feature 4 are present. See text for additional details of how to perform the CAM-ICU.