Question 1

For the past week, a 65-year-old woman has been treated for a severe infection with broad-spectrum antibiotics, and she had recovered well. Over the past day, however, she has developed foul-smelling, voluminous, greenish, watery diarrhea, as well as abdominal pain and fever. She is diagnosed with pseudomembranous colitis. Which of the following is the mechanism associated with this condition?

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    A. Aggregation of bacterial colonies on the lumen, forming pseudomembranes

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    B. Bacterial release of exotoxin, inducing necrosis of the mucosa

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    C. Physical invasion of bacteria into the superficial mucosa, leading to pseudomembrane formation

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    D. Selective killing of C. difficile bacteria by antibiotics

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    E. Spread of the previous infection to the colon

 

 

 

 

 

Making the Diagnosis and Management_Geriatric

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