Answer to Question 1
ANS: A
Clostridium difficile is a spore-forming organism that can be transmitted through direct and indirect patient contact. Because Clostridium difficile is a spore-forming organism, hand sanitizer is not effective in preventing its transmission. Hands must be washed with soap and water to prevent transmission. This organism is not transmitted via the droplet route; therefore, droplet precautions are not needed. An N95 respirator is used primarily for patients with airborne illness, especially tuberculosis. While all patients should be taught cough etiquette, this action is not specifically related to the patient having Clostridium difficile.
Answer to Question 2
ANS: A
After the mask is worn for several hours, it can become moist. The mask should be changed as soon as possible because moisture does not provide a barrier to microorganisms and is ineffective. Waiting to change the mask, air-drying it, or wearing it because it is comfortable does not support the principles of infection control.