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A 62-year-old male presents with abdominal distention and confusion. Paracentesis reveals low-protein ascitic fluid. What underlying condition most likely caused this?

A 12-year-old girl presents with involuntary repetitive handwashing and constant fear of contamination. She is aware the behavior is excessive. What is the most likely diagnosis?

A 74-year-old male with a history of alcohol abuse presents with a coarse tremor, tachycardia, and hallucinations 2 days after hospital admission. What is the likely diagnosis?

A 30-year-old woman presents with ptosis and fatigue that worsens throughout the day. Her symptoms improve after rest. What autoantibodies are likely present?

A patient reports experiencing dull, aching pain in their lower back that began gradually over several days. Which nerve fibers are responsible for this pain?

A nurse practitioner is reviewing labs for a patient on chronic corticosteroid therapy. Which of the following endocrine abnormalities is most expected?

A 62-year-old man experiences sudden cardiac arrest. CPR is initiated. What rhythm is most likely to respond to defibrillation?

A 43-year-old woman has numbness, weakness, and blurred vision that resolve but then recur. Brain MRI shows plaques. What is the most likely diagnosis?

A 44-year-old woman with hypertension is noted to have left ventricular hypertrophy on echocardiogram. What is the most likely pathophysiologic mechanism?

A 4-year-old child living in an older home presents with irritability, developmental delay, and microcytic anemia. What cellular mechanism is most disrupted by the suspected condition?