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8437 Pathology

A 75-year-old man who lives alone in a poorly ventilated house without central heating uses a portable unvented kerosene heater to warm the house during the winter months. One morning, a neighbor finds him in an obtunded state. On physical examination, he appears cyanotic. Results of blood gas measurement on room air are PO2, 90 mm Hg; PCO2, 35 mm Hg; and pH, 7.3. Pulse oximetry shows low oxygen saturation. Exposure to which of the following is most likely to have produced this man’s illness?

ABeryllium
BCarbon monoxide
CNitrous oxide compounds
DOxygen
Pathology
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8441 Pathology

A 23-year-old man has noted a yellow color to his sclerae for the past 2 weeks. On physical examination, he has generalized jaundice. He has the physique of a bodybuilder. Laboratory studies show serum total bilirubin, 5.6 mg/dL; ALT, 117 U/L; AST, 103 U/L; alkaline phosphatase, 148 U/L; albumin, 5.5 g/dL; and total protein, 7.9 g/dL. Which of the following substances is he most likely to be using?

AAcetaminophen
BAnabolic steroid
CChlorpromazine
DEthyl alcohol
Pathology
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