Answer to Question 1
ANS: A
All socioeconomic groups are at risk for head lice infestation. Head lice do not only affect people in crowded environments. Humans are the only host for these obligate parasites. Head lice can be transmitted on clothing, hairbrushes, furniture, and other objects. The infestation cannot be acquired through contact with pets or any other animals.
Answer to Question 2
ANS: A
Parenteral pentamidine can cause sudden and severe hypotension in 1 of patients, so patients should receive the drug while lying down, and nurses should monitor the blood pressure while giving the drug. Coughing and shortness of breath occur with the inhaled form of the drug. Darkening of the urine is a side effect of metronidazole. Yellow discoloration of the sclerae occurs with nitazoxanide.