Answer to Question 1
ANS: B
Helminthic diseases include nematode diseases such as intestinal pinworms, hookworms, and trichinosis. Blood-borne flukes are a type of trematode disease.
Answer to Question 2
ANS: C
Antibiotic prophylaxis is commonly used for procedures associated with brief exposure to possible infection, for procedures not frequently associated with infection but when occurrence would have disastrous or life-threatening consequences, or for intraoperative irrigation to minimize bacterial colonization. It can be given while waiting for culture results.