LPN Respiratory Care and Oxygenation

Question 1

What is the normal oxygen saturation (SpO2) range for a healthy adult?

Accepted Answer

95-100%

Answer

85-90%

Answer

90-94%

Answer

100% only

Question 2

Which oxygen delivery device provides the most precise and controlled oxygen concentration?

Accepted Answer

Venturi mask

Answer

Nasal cannula

Answer

Simple face mask

Answer

Non-rebreather mask

Question 3

An LPN is caring for a patient with COPD requiring supplemental oxygen. Which flow rate should be used cautiously to avoid suppressing the hypoxic drive?

Accepted Answer

1-2 L/min via nasal cannula

Answer

5-6 L/min via simple mask

Answer

10-12 L/min via simple mask

Answer

15 L/min via non-rebreather mask

Question 4

Which position is most appropriate for a patient experiencing acute respiratory distress?

Accepted Answer

High Fowler's (90 degrees)

Answer

Supine

Answer

Trendelenburg

Answer

Lateral recumbent

Question 5

A patient is using a nasal cannula at 4 L/min. What approximate FiO2 is being delivered?

Accepted Answer

36%

Answer

24%

Answer

44%

Answer

60%

Question 6

What is the most reliable early indicator of respiratory distress in an adult patient?

Accepted Answer

Restlessness and anxiety

Answer

Cyanosis

Answer

Bradycardia

Answer

Decreased respiratory rate

Question 7

Which breath sound indicates the presence of fluid in the alveoli or small airways?

Accepted Answer

Crackles (rales)

Answer

Rhonchi

Answer

Wheezing

Answer

Stridor