Which of the following measures is contraindicated when the nurse assists a child who has leukemia with oral hygiene? 1. Applying petroleum jelly to the lips. 2. Cleaning the teeth with a toothbrush....

Which of the following measures is contraindicated when the nurse assists a child who has leukemia with oral hygiene?

1. Applying petroleum jelly to the lips.

2. Cleaning the teeth with a toothbrush.

3. Swabbing the mouth with moistened cotton swabs.

4. Rinsing the mouth with a nonirritating mouthwash.