Q: A patient with chronic obstructive pulmonary disease (COPD) is found to have a forced expiratory volume in one second (FEV$_1$) that is significantly reduced. Which equation best represents the calculation of FEV$_1$ as a percentage of forced vital capacity (FVC)?

$FEV_1\% = \frac{FEV_1}{FVC} \times 100$

Question 1

A patient presents with sudden onset of pleuritic chest pain, dyspnea, tachypnea, tachycardia, and unexplained anxiety. Which pulmonary vascular disorder is most likely responsible for these symptoms?

Accepted Answer

Pulmonary embolism

Question 2

Which of the following best describes Cheyne-Stokes respirations?

Accepted Answer

Alternating periods of deep and shallow breathing with apnea lasting 15–60 seconds, followed by increasing then decreasing ventilation

Question 3

A patient with chronic bronchitis is likely to have which of the following pathophysiological changes?

Accepted Answer

Inflammation of the large airways with increased mucus production

Question 4

Which equation correctly represents the calculation of alveolar ventilation ($V_A$) given tidal volume ($V_T$), dead space volume ($V_D$), and respiratory rate ($f$)?

Accepted Answer

$V_A = (V_T - V_D) 	imes f$

Question 5

A patient with severe hypoxemia, tracheal deviation away from the affected lung, and hypotension is most likely experiencing which type of pneumothorax?

Accepted Answer

Tension pneumothorax

Question 6

Which of the following is the most common cause of pulmonary edema?

Accepted Answer

Left heart disease

Question 7

A patient with asthma experiences bronchospasm, mucosal edema, and mucus production. Which immune cell is primarily responsible for the early asthmatic response?

Accepted Answer

Mast cell

Question 8

Which of the following is a distinguishing feature of restrictive lung disorders compared to obstructive lung disorders?

Accepted Answer

Decreased lung compliance and reduced tidal volume

Question 9

A patient with chronic obstructive pulmonary disease (COPD) is found to have a forced expiratory volume in one second (FEV$_1$) that is significantly reduced. Which equation best represents the calculation of FEV$_1$ as a percentage of forced vital capacity (FVC)?

Accepted Answer

$FEV_1\% = \frac{FEV_1}{FVC} 	imes 100$

Question 10

Which of the following is a clinical manifestation of acute lung injury (ALI) or acute respiratory distress syndrome (ARDS)?

Accepted Answer

Dyspnea and hypoxemia with poor response to oxygen supplementation

Question 11

A patient with pneumonia develops consolidation of lung tissue. What is the primary physiological consequence of this consolidation?

Accepted Answer

Alveoli fill with fluid, impairing gas exchange

Question 12

Which of the following is the most frequent cause of lung cancer in the United States?

Accepted Answer

Cigarette smoking

Question 13

A patient with tuberculosis is found to have caseous necrosis in the lungs. What does 'caseous necrosis' refer to?

Accepted Answer

Cheeselike material resulting from granulomatous inflammation

Question 14

Which of the following is a common clinical manifestation of pleural effusion?

Accepted Answer

Dyspnea and pleural pain

Question 15

A patient with pulmonary hypertension is at risk for developing which cardiac complication?

Accepted Answer

Cor pulmonale (right ventricular enlargement)

Question 16

Which of the following is the best initial treatment for a patient with acute tension pneumothorax?

Accepted Answer

Immediate chest tube placement

Question 17

A patient exposed to high concentrations of supplemental oxygen for a prolonged period develops severe inflammatory response and alveolar damage. What is the most likely diagnosis?

Accepted Answer

Oxygen toxicity

Question 18

Which of the following is a key feature of Kussmaul respirations?

Accepted Answer

Slightly increased ventilatory rate, very large tidal volume, and expiratory pause

Question 19

A patient with chronic obstructive pulmonary disease (COPD) is at increased risk for which of the following complications due to air trapping?

Accepted Answer

Hyperinflation of alveoli and increased residual volume

Question 20

Which of the following is the most effective strategy for preventing ventilator-associated pneumonia in hospitalized patients?

Accepted Answer

Oral hygiene and endotracheal tube interventions

Alterations of Pulmonary Function: Signs and Symptoms of Pulmonary Disease

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