A 60-Year-Old Man Is Brought to the Emergency Department Due

question 318

Multiple Choice

A 60-year-old man is brought to the emergency department due to altered mental status.  His wife says that he had a nagging cough that seemed to worsen over the past several months and that he began experiencing occasional dizziness earlier this week.  Over the last couple of days, the patient has become increasingly confused, and today he "does not make any sense at all."  He has no significant past medical history but has smoked a pack of cigarettes daily for the last 40 years.  On physical examination, the patient is incoherent but has an otherwise normal neurologic examination.Laboratory results are as follows: Chest x-ray reveals a mass in the right lung.  Which of the following additional findings is most likely to be present in this patient?

• A)Bilateral crackles at the lung bases
• B)Elevated jugular venous pressure
• C)Maximally dilute urine
• D)Apparent euvolemia
• E)Peripheral edema

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Definitions:

Darwin's Theory

A scientific theory developed by Charles Darwin that explains the diversity of life on Earth through the process of natural selection.

Evolutionary Change

A process through which organisms adapt and evolve over time due to genetic variations and environmental pressures.

Reproductive Success

The passing of genes onto the next generation in a way that they too can pass on those genes.

Epigenetic Study

Research focused on changes in gene expression caused by mechanisms other than changes in the DNA sequence itself.