Respiratory Quiz #7, Respiratory Mechanics and Ventilation  

1. A 65-year-old man with a history of chronic obstructive pulmonary disease (COPD) presents to the clinic complaining of increased difficulty breathing, especially during exertion. Pulmonary function tests show a decreased FEV1/FVC ratio and increased total lung capacity. Which of the following changes in respiratory mechanics is most likely observed in this patient? 

Question 1 of 7

2. A 70-year-old woman with idiopathic pulmonary fibrosis presents with progressive dyspnea. A lung biopsy shows extensive fibrosis and decreased lung volumes on pulmonary function testing. Which of the following changes in respiratory mechanics is primarily responsible for her symptoms? 

Question 2 of 7

3. A researcher is studying a group of healthy volunteers during a spirometry session. She notices that at the end of a normal expiration, the inward elastic recoil of the lung is balanced by the outward recoil of the chest wall. What is this point of respiratory equilibrium called? 

Question 3 of 7

4. During a physiology lecture, a professor explains the concept of lung volumes and capacities. She mentions a particular lung volume that cannot be measured using spirometry. Which of the following lung volumes is she referring to? 

Question 4 of 7

5. A 29-year-old man is admitted to the emergency department following a motor vehicle accident. He is diagnosed with a flail chest resulting from multiple rib fractures. Which of the following changes in respiratory mechanics is most likely to be observed in this patient? 

Question 5 of 7


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