An 82-year-old patient admitted for pneumonia becomes acutely confused and agitated, pulling at their IV lines. The nurse reports this is a sudden change from their baseline. What is the most appropriate initial management step?

The correct answer to the question "An 82-year-old patient admitted for pneumonia becomes acutely confused and agitated, pulling at their IV lines. The nurse reports this is a sudden change from their baseline. What is the most appropriate initial management step?" is Option C: Conduct a thorough investigation for underlying reversible causes..

The other options — A) Administer a low-dose antipsychotic like haloperidol., B) Order a padded bed rail and physical restraints., D) Administer a benzodiazepine to calm the patient. — are incorrect for this USMLE Exam Prep question. As explained above: Acute confusion in the elderly (delirium) requires identifying and treating the underlying cause, which can include infection, metabolic derangements, medications, or dehydration. Pharmacological res…