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USMLE · Question #490
USMLE Question #490: Real Exam Question with Answer & Explanation
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Question
A 16-year-old boy is brought to the physician because of a 3-day history of abdominal pain and vomiting; he also has had decreased appetite during this period. The pain was initially on the right but now has become generalized. His temperature is 38.8°C (101.8°F), pulse is 100/min, respirations are 20/min, and blood pressure is 143/83 mmHg. Abdominal examination shows guarding with diffuse rebound tenderness. There are no palpable masses. A CT scan of the abdomen shows a perforated appendix. Examination of peritoneal fluid from this patient will most likely show which of the following organisms?
Options
- ACandida albicans
- BCitrobacter freundii
- CEscherichia coli
- DStaphylococcus aureus
- EStreptococcus pneumoniae
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