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Kaplan Qbank USMLE



Author7 Posts
  #1

A 44-year-old man has had no major medical problems throughout his life, except for arthritis pain involving all extremities for the past 5 years. He has had worsening orthopnea and pedal edema in the past 6 months. There is no chest pain. On examination he is afebrile. A chest radiograph shows cardiomegaly with both enlarged left and right heart borders, along with pulmonary edema. Laboratory studies show serum sodium 139 mmol/L, potassium 4.3 mmol/L, chloride 99 mmol/L, CO2 25 mmol/L, urea nitrogen 18 mg/dL, creatinine 1.3 mg/dL, and glucose 167 mg/dL. Which of the following additional laboratory test findings is he most likely to have?

A Spherocytes on his peripheral blood smear

B Hemoglobin of 10.7 g/dL with MCV of 72 fL

C Erythrocyte sedimentation rate of 79 mm/Hr

D Anti-centromere antibody titer of 1:320

E Serum ferritin of 8700 ng/mL

___________________
If you plan too much ahead of time, You lose your focus.

  #2

B

  #3

nopes... try again...and tell me why did you think B..

___________________
If you plan too much ahead of time, You lose your focus.

  #4

ok here's the answer

(E) CORRECT. He has findings of a cardiomyopathy with right and left heart failure. Hereditary hemochromatosis can produce iron deposition in visceral organs, including the heart. The serum ferritin is a good indicator of body iron stores. Hemochromatosis affects the pancreas as well, leading to diabetes mellitus. Deposition of iron in joints leads to arthritis. The onset of disease is typically in the 40's in males and 60's in females.

___________________
If you plan too much ahead of time, You lose your focus.

  #5

Actually I was confused between a "dillution anemia" and hemochromatosis- arthropathy, diabetes, cardiac failure.

  #6

good question, where is it from?

  #7

yup e-i have read a similar q elswhere







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