Chapter 40: Airway Clearance Therapy

Chapter 40: Airway Clearance Therapy

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. A normal cough reflex includes which of the following phases?
2. irritation
3. inspiration
4. compression
5. expulsion

ANS:  C

As shown in Figure 40-1, there are four distinct phases to a normal cough: irritation, inspiration, compression, and expulsion.

DIF:    Recall             REF:   p. 963            OBJ:   1

2. Which of the following is/are necessary for normal airway clearance?
3. patent airway
4. functional mucociliary escalator
5. effective cough

ANS:  B

Normal airway clearance requires a patent airway, a functional mucociliary escalator, and an effective cough

DIF:    Recall             REF:   p. 963            OBJ:   1

3. Which of the following can provoke a cough?
4. anesthesia
5. foreign bodies
6. infection
7. irritating gases

ANS:  D

Infection is a good example of cough stimulation due to an inflammatory process. Foreign bodies can provoke a cough through mechanical stimulation. Chemical stimulation can occur when irritating gases are inhaled (e.g., cigarette smoke). Finally, cold air may cause thermal stimulation of sensory nerves and produce a cough.

DIF:    Recall             REF:   p. 964            OBJ:   1

4. Which of the following occur(s) during the compression phase of a cough?
5. expiratory muscle contraction
6. opening of the glottis
7. rapid drop in alveolar pressure

ANS:  D

During the third or compression phase, reflex nerve impulses cause glottic closure and a forceful contraction of the expiratory muscles.

DIF:    Recall             REF:   p. 964            OBJ:   1

5. Retention of secretions can result in full or partial airway obstruction. Mucus plugging can result in which of the following?
6. hypoxemia
7. atelectasis
8. Shunting

ANS:  A

Full obstruction, or mucus plugging, can result in atelectasis and impaired oxygenation due to shunting.

DIF:    Recall             REF:   p. 964            OBJ:   1