A 67-year-old female with a history of congestive heart failure and myocardial infarction is admitted to the hospital because of increasing altered mental status and decreased arousal over the last week. Which one of the following features best distinguishes delirium from depression or dementia?

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Question 1 of 5

A 67-year-old female with a history of congestive heart failure and myocardial infarction is admitted to the hospital because of increasing altered mental status and decreased arousal over the last week. Which one of the following features best distinguishes delirium from depression or dementia?

A. Irritability B. Inattention C. Paranoia D. Aggressiveness

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 2 of 5

Randall Johnson, an 80-year-old man with a history of high blood pressure and hypothyroidism, presents with ongoing dizziness. What is the most likely cause of his dizziness?

A. Orthostatic hypotension B. Benign positional paroxysmal vertigo C. Overcontrol of thyroid D. Ménière disease

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 3 of 5

What further diagnostic steps are required for the seven patients receiving atypical antipsychotics?

A. All patients should receive 1 week of actigraphy monitoring both on and off their current antipsychotic. B. All patients should be immediately referred for cognitive behavioral therapy for insomnia (CBTI). C. All patients should receive referral to both psychiatry and neurology, neuroimaging, and screening polysomnography to identify underlying sleep disorder. D. Unless there is an underlying suspicion of obstructive sleep apnea (OSA) or other sleep disorder, these patients already meet criteria for irregular sleep-wake phase disorder, and no further diagnostic steps are required.

Correct Answer: C

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 4 of 5

An 82-year-old woman with a history of hypertension and type 2 diabetes mellitus presents after collapsing at home. What diagnostic test should be done first?

A. Complete blood count and basic metabolic panel B. A STAT noncontrast head computed tomography (CT) C. A two-dimensional echocardiogram D. Urinalysis

Correct Answer: B

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

Question 5 of 5

Which one of the following is most true about aging changes?

A. Stage 3 and 4 sleep decreases. B. Renal perfusion is not reduced, but renal function is reduced. C. Hearing acuity declines beginning in middle age. D. Prostatic enlargement occurs only in a minority of men.

Correct Answer: A

Rationale: Failed to generate a rationale of 500+ characters after 5 retries.

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