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Showing all 5 practice questions with expert explanatory rationales.

Question 1 of 5

The clinic nurse is caring for a patient who has been diagnosed with emphysema and who has just had a pulmonary function test (PFT) ordered. The patient asks, 'What exactly is this test for?' What would be the nurse's best response?

A. A PFT measures how much air moves in and out of your lungs when you breathe.

B. A PFT measures how much energy you get from the oxygen you breathe.

C. A PFT measures how elastic your lungs are.

D. A PFT measures whether oxygen and carbon dioxide move between your lungs and your blood.

Expert Explanatory Rationale

Correct Answer: A PFT measures how much air moves in and out of your lungs when you breathe.

Question 2 of 5

During inspiration, air passes into lungs due to

A. Increase in volume of thoracic cavity and fall in lung pressure

B. Fall in pressure inside the lungs

C. Increased volume of thoracic cavity

D. Muscular expansion of lungs

Expert Explanatory Rationale

Correct Answer: Increase in volume of thoracic cavity and fall in lung pressure

Question 3 of 5

The percent of oxygen saturation of hemoglobin when the temperature is 38 degrees centigrade is

A. greater than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade

B. less than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade

C. equal to the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade

D. equal to the percent of oxygen saturation of hemoglobin when the temperature is 20 degrees centigrade

Expert Explanatory Rationale

Correct Answer: greater than the percent of oxygen saturation of hemoglobin when the temperature is 43 degrees centigrade

Question 4 of 5

A patient with pneumonia has a nursing diagnosis of ineffective airway clearance related to pain, fatigue, and thick secretions. What is an expected outcome for this patient?

A. SpO is 90%

B. Lungs clear to auscultation

C. Patient tolerates walking in hallway

D. Patient takes three or four shallow breaths before coughing to minimize pain

Expert Explanatory Rationale

Correct Answer: Patient takes three or four shallow breaths before coughing to minimize pain

Question 5 of 5

Which statement is NOT true?

A. Carbon dioxide is more soluble in fluid than in oxygen.

B. Carbon dioxide diffuses more rapidly across the respiratory surface than does oxygen.

C. The major muscle involved in breathing is the diaphragm.

D. Oxygen is carried primarily by blood plasma

Expert Explanatory Rationale

Correct Answer: Oxygen is carried primarily by blood plasma

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