Quick valid and reliable bedside assessment tool and delirium monitoring instrument for ICU patients. Can be used by all providers and is adapted for use with non-verbal patients. Delirium is defined in terms of four diagnostic features and is deemed positive when Feature 1 and Feature 2 AND either Feature 3 OR 4 is present.
Feature 1: Acute change or fluctuating course of mental status.
Use RASS or past CAM-ICU scores. Evaluate baseline mental status and whether it’s been fluctuating in the last 24 hrs.
Feature 2: Inattention
Patients are instructed to squeeze the examiner’s hand when they hear the letter A. If the patient is unable can try picture recall
Feature 3: Altered level of consciousness
The current level of consciousness/RASS score
Feature 4: Disorganized thinking
Yes/no questions and command following
Brief Confusion Assessment Method (bCAM)
(Ho Han, 2015)
Delirium assessment that takes less than 2 minutes to perform. bCAM is a modified CAM-ICU designed to improve sensitivity in non-critically ill patients and uses objective testing to determine the presence of inattention and disorganized thinking. The patient must be inattentive in order to be bCAM positive.
Features 1, 3, & 4 are the same as the CAM-ICU. In feature 2, patients are asked to name the months backward.
References
Ely, E. W. (2016). Confusion assessment method for the ICU (CAM-ICU): The complete training manual (pp. 1–32). Vanderbilt University Medical Center. https://uploads-ssl.webflow.com/5b0849daec50243a0a1e5e0c/5bad3d28b04cd592318f45cc_The-Complete-CAM-ICU-training-manual-2016-08-31_Final.pdf
Ely, E. W., Truman, B., Shintani, A., Thomason, J. W. W., Wheeler, A. P., Gordon, S., Francis, J., Speroff, T., Gautam, S., Margolin, R., Sessler, C. N., Dittus, R. S., & Bernard, G. R. (2003). Monitoring sedation status over time in ICU patients: Reliability and validity of the Richmond Agitation-Sedation Scale (RASS). JAMA, 289(22), 2983–2991. https://doi.org/10.1001/jama.289.22.2983
Ho Han, J. (2015). Brief confusion assessment method (bCAM) (pp. 1–11). https://uploads-ssl.webflow.com/5b0849daec50243a0a1e5e0c/5bb3783be59e3422910fc5ba_bCAM-Training-Manual-Version-1-0-10-15-2015.pdf