Chapter 38: Medical Gas Therapy

Chapter 38: Medical Gas Therapy

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. Specific clinical objectives of oxygen (O₂) therapy include which of the following?
2. decrease the symptoms caused by chronic hypoxemia
3. decrease the workload hypoxemia imposes on the heart and lungs
4. correct documented arterial hypoxemia

ANS:  D

Specific clinical objectives of O₂ therapy are to (1) correct documented or suspected acute hypoxemia, (2) decrease the symptoms associated with chronic hypoxemia, and (3) decrease the workload hypoxemia imposes on the cardiopulmonary system.

DIF:    Recall             REF:   p. 910            OBJ:   1

2. Properly applied O₂ therapy can decrease which of the following?
3. ventilatory demand
4. work of breathing
5. cardiac output

ANS:  C

In cases of acute hypoxemia, supplemental O₂ can decrease demands on both the heart and the lungs.

DIF:    Recall             REF:   p. 910            OBJ:   1

3. Benefits of properly applied O₂ therapy in patients with chronic hypoxemia include all of the following except:

ANS:  D

Oxygen therapy can reverse pulmonary vasoconstriction and decrease right ventricular workload.

DIF:    Recall             REF:   p. 910            OBJ:   1

4. Which of the following would indicate a need for O₂ therapy for an adult or child?
5. SaO₂ less than 90%
6. PaCO₂ greater than 45 mm Hg
7. PaO₂ less than 60 mm Hg

ANS:  D

Excerpts from the AARC guideline on O₂ therapy in acute care hospitals appear in CPG 38-1.

DIF:    Application    REF:   p. 911            OBJ:   1

5. You start a chronic obstructive pulmonary disease (COPD) patient on a nasal O₂ cannula at 2 L/min. What is the maximum time that should pass before assessing this patient’s PaO₂ or SaO₂?

ANS:  A

Excerpts from the AARC guideline on O₂ therapy in acute care hospitals appear in CPG 38-1.

DIF:    Application    REF:   p. 911            OBJ:   1