You are at a baseball game and another fan experiences dizziness and nearly faints in the stands next to you

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You are at a baseball game and another fan experiences dizziness and nearly faints in the stands next to you. You tell him that you are a paramedic and will walk him to your car where you have your medical equipment. He reports that he has had a headache off and on since he had a tooth extracted four days ago.

Although he is feeling very weak, his blood pressure is normal. When you listen to his heart you note that he has a pronounced murmur. He reports having had rheumatic fever 15 years ago. You examine his fingernails an find one that has tiny petechial hemorrhages under it.

1. What are petechial hemorrhages?

2. Which cardiovascular infectious condition is this?

3. What is the most likely causative organism and the route of transmission?

4. What's the connection, if any, with rheumatic fever?

5. What type of culture would a physician most like order, and why?

6. What is the treatment? Is there a way to prevent the condition?

7. What are the staining and morphological characteristics of this disease agent?