Which test is not typically part of the dementia workup as described?

Which test is not typically part of the dementia workup as described?

• A. Electrocardiogram
• B. CBC
• C. Thyroid function tests
• D. Brain MRI with contrast

Answer: (A)

The main concept is that evaluating dementia focuses on identifying brain-related or reversible causes of cognitive decline, so the tests chosen are those that reveal brain pathology or systemic factors that can affect cognition. A CBC helps detect anemia or infection that could impair thinking. Thyroid function tests catch hypothyroidism, a reversible contributor to cognitive slowing. Brain MRI with contrast provides detailed images to identify tumors, inflammation, vascular changes, or other structural problems that could mimic or cause dementia. An electrocardiogram, by contrast, assesses heart rhythm and conduction, or ischemia, which are not direct indicators of cognitive decline. It’s important for overall health or if there are signs that a cardioembolic event or stroke might explain symptoms, but it doesn’t evaluate brain pathology. So the test not typically part of the dementia workup is the electrocardiogram.

The main concept is that evaluating dementia focuses on identifying brain-related or reversible causes of cognitive decline, so the tests chosen are those that reveal brain pathology or systemic factors that can affect cognition. A CBC helps detect anemia or infection that could impair thinking. Thyroid function tests catch hypothyroidism, a reversible contributor to cognitive slowing. Brain MRI with contrast provides detailed images to identify tumors, inflammation, vascular changes, or other structural problems that could mimic or cause dementia. An electrocardiogram, by contrast, assesses heart rhythm and conduction, or ischemia, which are not direct indicators of cognitive decline. It’s important for overall health or if there are signs that a cardioembolic event or stroke might explain symptoms, but it doesn’t evaluate brain pathology. So the test not typically part of the dementia workup is the electrocardiogram.