Which tool is commonly used to assess delirium in hospitalized patients?

Which tool is commonly used to assess delirium in hospitalized patients?

• A. Mini-Mental State Examination
• B. Confusion Assessment Method
• C. Montreal Cognitive Assessment
• D. MoCA

Answer: (B)

Delirium in hospitalized patients is best identified by focusing on acute changes in attention and cognition that fluctuate over time. The Confusion Assessment Method is designed for this exact purpose at the bedside in acute care settings. It uses a simple four-feature approach: acute onset and fluctuating course, inattention, disorganized thinking, and altered level of consciousness. A diagnosis of delirium is made when there is an acute onset with a fluctuating course and inattention, plus either disorganized thinking or an altered level of consciousness. This targeted algorithm makes CAM both quick to administer and effective at distinguishing delirium from baseline dementia or other chronic cognitive problems, which is essential in the hospital where rapid decision-making is needed. In contrast, general cognitive screening tools like the Mini-Mental State Examination and the Montreal Cognitive Assessment are designed to detect broader, chronic cognitive impairment rather than the acute, fluctuating features of delirium. They don’t emphasize inattention or abrupt changes over time and can be confounded by a patient’s baseline cognitive status, education, or language barriers. While useful for assessing overall cognitive function, they’re not optimized to identify delirium as such, which is why the Confusion Assessment Method is the preferred tool for this purpose in hospitalized patients.

Delirium in hospitalized patients is best identified by focusing on acute changes in attention and cognition that fluctuate over time. The Confusion Assessment Method is designed for this exact purpose at the bedside in acute care settings. It uses a simple four-feature approach: acute onset and fluctuating course, inattention, disorganized thinking, and altered level of consciousness. A diagnosis of delirium is made when there is an acute onset with a fluctuating course and inattention, plus either disorganized thinking or an altered level of consciousness. This targeted algorithm makes CAM both quick to administer and effective at distinguishing delirium from baseline dementia or other chronic cognitive problems, which is essential in the hospital where rapid decision-making is needed.

In contrast, general cognitive screening tools like the Mini-Mental State Examination and the Montreal Cognitive Assessment are designed to detect broader, chronic cognitive impairment rather than the acute, fluctuating features of delirium. They don’t emphasize inattention or abrupt changes over time and can be confounded by a patient’s baseline cognitive status, education, or language barriers. While useful for assessing overall cognitive function, they’re not optimized to identify delirium as such, which is why the Confusion Assessment Method is the preferred tool for this purpose in hospitalized patients.