Chapter 16: Pulmonary Therapeutic Management

Chapter 16: Pulmonary Therapeutic Management

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. Which of the following arterial blood gas values would indicate a need for oxygen therapy?

ANS:  D

The amount of oxygen administered depends on the pathophysiologic mechanisms affecting the patient’s oxygenation status. In most cases, the amount required should provide an arterial partial pressure of oxygen (PaO₂) of greater than 60 mm Hg or an arterial hemoglobin saturation (SaO₂) of greater than 90% during both rest and exercise.

2. Which of the following oxygen administration devices can deliver oxygen concentrations of 90%?

ANS:  A

With an FiO₂ of 55% to 70%, a nonrebreathing mask with a tight seal over the face can deliver 90% to 100% oxygen. It is used in emergencies and short-term therapy requiring moderate to high FiO₂.

3. The most accurate and reliable control of FiO₂ can be achieved through the use of a(n)

ANS:  B

The most reliable and accurate means of delivering a prescribed concentration of oxygen is through the use of a nonrebreathing circuit (closed).

4. Use of oxygen therapy in the patient who is hypercapnic may result in

ANS:  C

Deoxygenated hemoglobin carries more CO₂ compared with oxygenated hemoglobin. Administration of oxygen increases the proportion of oxygenated hemoglobin, which causes increased release of CO₂ at the lung level. Because of the risk of CO₂ accumulation, all patients who are chronically hypercapnic require careful low-flow oxygen administration.

5. The correct procedure for selecting an oropharyngeal airway is to:

ANS:  D

An oropharyngeal airway’s proper size is selected by holding the airway against the side of the patient’s face and ensuring that it extends from the corner of the mouth to the angle of the jaw. If the airway is improperly sized, it will occlude the airway. Nasopharyngeal airways are measured by holding the tube against the side of the patient’s face and ensuring that it extends from the tip of the nose to the ear lobe.