In the initial evaluation of delirium, which approach is recommended?

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Multiple Choice

In the initial evaluation of delirium, which approach is recommended?

Delirium signals an acute disturbance often triggered by reversible medical problems, so the initial approach is to look for those underlying causes rather than assuming a primary psychiatric issue or doing no workup. The recommended plan is to obtain labs and imaging directed by the clinical picture. This means starting with common, broadly useful tests to catch metabolic, infectious, or organ dysfunction—blood work like a metabolic panel, CBC, glucose, kidney and liver function, electrolytes, and, when indicated, thyroid testing; urinalysis; pregnancy testing when relevant; and an ECG to screen for arrhythmias or QT prolongation. Imaging and further tests are guided by specific features: a head CT or MRI if there are new focal neurologic signs, head injury, or concern for stroke; chest imaging or infectious workup if pneumonia or systemic infection is suspected; and lumbar puncture only when meningitis or intracranial infection is a concern. Brain biopsy is far too invasive for initial evaluation and is not appropriate as a first step. Skipping testing misses treatable conditions and can delay important interventions, so an evidence-based, targeted testing approach is essential.

Delirium signals an acute disturbance often triggered by reversible medical problems, so the initial approach is to look for those underlying causes rather than assuming a primary psychiatric issue or doing no workup. The recommended plan is to obtain labs and imaging directed by the clinical picture. This means starting with common, broadly useful tests to catch metabolic, infectious, or organ dysfunction—blood work like a metabolic panel, CBC, glucose, kidney and liver function, electrolytes, and, when indicated, thyroid testing; urinalysis; pregnancy testing when relevant; and an ECG to screen for arrhythmias or QT prolongation. Imaging and further tests are guided by specific features: a head CT or MRI if there are new focal neurologic signs, head injury, or concern for stroke; chest imaging or infectious workup if pneumonia or systemic infection is suspected; and lumbar puncture only when meningitis or intracranial infection is a concern. Brain biopsy is far too invasive for initial evaluation and is not appropriate as a first step. Skipping testing misses treatable conditions and can delay important interventions, so an evidence-based, targeted testing approach is essential.

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