Reference no: EM133313741

1. A 50-year-old woman returned yesterday from a vacation in Peru, where there is an epidemic of cholera. She went to the doctor because has multiple episodes of diarrhea. Which of the following is MOST compatible with cholera?

1. Watery diarrhea without blood (rice water) and no organisms in the blood culture.

2. Watery diarrhea without blood (rice-water), flecks of mucus in the stool, and growth of curved gram-
negative rods in the blood culture.

3. Bloody diarrhea, mucus in the stool, and growth of gram-negative rods in the blood culture

4. Bloody diarrhea, flecks of mucus in the stool, and no organisms in the blood culture.

2. Patient X is a 22-year-old man with fever, fatigue, and a new diastolic murmur. You suspect endocarditis and do a blood culture. What grew in the BA was a gram-positive coccus arranged in clusters. When subcultured on blood agar, the colonies were surrounded by a zone of beta hemolysis, and a coagulase test was positive.

Which of the following statements is LEAST accurate for these results?

1. IF he had dental surgery recently, one of the most likely organisms to grow would be a Viridans group Streptococcus.

2. If he is an intravenous drug user, one of the most likely organisms to grow would be Candida albicans.

3. If he has a prosthetic aortic valve, one of the most likely organisms to grow would be Streptococcus agalactiae.

4. If he had colon surgery recently, one of the most likely organisms to grow would be Enterococcus faecalis.