Impairment in two or more cognitive areas is described as a risk factor for delirium. Which option best reflects this statement?

Impairment in two or more cognitive areas is described as a risk factor for delirium. Which option best reflects this statement?

• A. Dementia
• B. Alzheimer's disease
• C. Delirium
• D. Parkinson's disease

Answer: (C)

Delirium is an acute, fluctuating disturbance of consciousness with impairment across multiple cognitive domains. When two or more cognitive areas are impaired—such as attention, memory, orientation, language, or visuospatial skills—that pattern fits delirium rather than a single isolated deficit. In older adults, preexisting cognitive problems (like dementia) raise the risk, and delirium itself manifests as rapid changes in mental status across several domains. Dementia and Alzheimer’s disease describe chronic, progressive declines in multiple cognitive areas, but they are gradual and persistent rather than the acute, fluctuating picture seen with delirium. Parkinson’s disease can involve cognitive changes, but the hallmark delirium picture is the sudden, multi-domain cognitive disturbance, not a slow, chronic trajectory. So, the description of impairment in two or more cognitive areas best aligns with delirium, highlighting its acute, multi-domain nature.

Delirium is an acute, fluctuating disturbance of consciousness with impairment across multiple cognitive domains. When two or more cognitive areas are impaired—such as attention, memory, orientation, language, or visuospatial skills—that pattern fits delirium rather than a single isolated deficit. In older adults, preexisting cognitive problems (like dementia) raise the risk, and delirium itself manifests as rapid changes in mental status across several domains.

Dementia and Alzheimer’s disease describe chronic, progressive declines in multiple cognitive areas, but they are gradual and persistent rather than the acute, fluctuating picture seen with delirium. Parkinson’s disease can involve cognitive changes, but the hallmark delirium picture is the sudden, multi-domain cognitive disturbance, not a slow, chronic trajectory.

So, the description of impairment in two or more cognitive areas best aligns with delirium, highlighting its acute, multi-domain nature.