Answer to Question 1
Correct Answer: 3
Rationale 1: A humidifier adds moisture to the air.
Rationale 2: A humidifier loosens secretions.
Rationale 3: The purposes of humidifiers are to prevent mucous membranes from drying and becoming irritated and to loosen secretions for easier expectoration.
Rationale 4: A humidifier does not replace the use of oxygen but is used with oxygen.
Answer to Question 2
Correct Answer: 4
Rationale 1: Expectorants do not affect the respiratory rate.
Rationale 2: Expectorants should improve lung sounds.
Rationale 3: Expectorants should cause a more productive cough.
Rationale 4: Expectorants break up mucus, making it more liquid and easier to cough out.