2 - COPD

Question 1

1. In COPD, which structural change directly reduces lung elastic recoil?
   A. Thickening of pleural membranes
   B. Destruction of alveolar septa
   C. Hypertrophy of mucous glands
   D. Calcification of costal cartilage

Answer 1

Correct Answer: B
Rationale: Destruction of alveolar septa reduces elastic recoil, impairing exhalation and leading to air trapping. A, C, and D are not major determinants of recoil loss in COPD.

Question 2

2. Which lung volume is disproportionately increased in COPD due to air trapping?
   A. Residual volume
   B. Tidal volume
   C. Inspiratory reserve volume
   D. Expiratory reserve volume

Answer 2

Correct Answer: A
Rationale: Residual volume (RV) increases as air becomes trapped after expiration. Tidal volume and IRV are often reduced in severe COPD. ERV may decrease but RV is most affected.

Question 3

3. Which structure primarily loses function due to chronic exposure to cigarette smoke in COPD?
   A. Type I pneumocytes
   B. Ciliated epithelial cells
   C. Clara cells
   D. Pulmonary veins

Answer 3

Correct Answer: B
Rationale: Smoking damages ciliated epithelium, impairing mucociliary clearance. Type I cells allow gas exchange but are less directly targeted. Clara cells detoxify, but not the key mechanism. Pulmonary veins are unrelated.

Question 4

4. Which part of the lung is most affected in centrilobular emphysema, a common COPD pattern in smokers?
   A. Respiratory bronchioles of upper lobes
   B. Alveoli of lower lobes
   C. Pleural spaces
   D. Pulmonary veins

Answer 4

Correct Answer: A
Rationale: Centrilobular emphysema begins at respiratory bronchioles in upper lobes. Lower lobe alveoli are more involved in panlobular emphysema (e.g., α1-antitrypsin deficiency). Pleura and veins are not primary sites.

Question 5

5. Which physiologic process explains the development of a “barrel chest” in COPD?
   A. Chronic hypoxemia
   B. Loss of alveolar surface area
   C. Dynamic hyperinflation with air trapping
   D. Pulmonary fibrosis

Answer 5

Correct Answer: C
Rationale: Barrel chest results from air trapping and hyperinflation. Hypoxemia, fibrosis, and loss of alveolar surface area contribute to symptoms but not directly to chest shape.

Question 6

6. Which breathing pattern is commonly seen in patients attempting to prolong airway patency during exhalation?
   A. Kussmaul breathing
   B. Pursed-lip breathing
   C. Cheyne-Stokes respiration
   D. Apneustic breathing

Answer 6

Correct Answer: B
Rationale: Pursed-lip breathing increases intraluminal pressure and prevents airway collapse. Kussmaul is metabolic acidosis, Cheyne-Stokes is CNS-driven, and apneustic is brainstem injury.

Question 7

7. Which pulmonary defense mechanism is most impaired in chronic bronchitis?
   A. Surfactant production
   B. Mucociliary clearance
   C. Negative intrathoracic pressure
   D. Pulmonary venous drainage

Answer 7

Correct Answer: B
Rationale: Goblet cell hyperplasia and mucus hypersecretion impair mucociliary clearance. Surfactant and pressure changes are not primary issues in chronic bronchitis.

Question 8

8. Which cardiovascular complication results from pulmonary vascular remodeling in COPD?
   A. Right-sided heart failure (cor pulmonale)
   B. Left-sided heart failure
   C. Systemic hypertension
   D. Aortic aneurysm

Answer 8

Correct Answer: A
Rationale: Pulmonary vascular remodeling and hypoxic vasoconstriction → pulmonary hypertension → RV hypertrophy and failure (cor pulmonale).

Question 9

9. Which change in diaphragmatic structure occurs in advanced COPD due to hyperinflation?
   A. Flattening
   B. Hypertrophy
   C. Asymmetry
   D. Fibrosis

Answer 9

Correct Answer: A
Rationale: Hyperinflation pushes the diaphragm downward and flattens it, reducing its efficiency. Hypertrophy is not typical, nor is fibrosis.

Question 10

10. Which pulmonary function test ratio is consistently reduced in COPD?
    A. FEV1/FVC
    B. TLC/FRC
    C. PaO₂/FiO₂
    D. DLCO/TLC

Answer 10

Correct Answer: A
Rationale: FEV1/FVC <70% confirms airflow obstruction. TLC/FRC and DLCO/TLC may change, but the defining measure is FEV1/FVC.

Question 11

11. Which abnormality contributes most to hypoxemia in COPD?
    A. Ventilation-perfusion mismatch
    B. Metabolic alkalosis
    C. Increased cardiac output
    D. Reduced hematocrit

Answer 11

Correct Answer: A
Rationale: V/Q mismatch is the hallmark of COPD, leading to hypoxemia. Hematocrit often rises (polycythemia) rather than falls.

Question 12

12. Which enzyme imbalance plays a central role in emphysema development?
    A. Excess protease activity vs. low antiprotease (α1-antitrypsin)
    B. Excess lipase
    C. Excess amylase
    D. Reduced renin

Answer 12

Correct Answer: A
Rationale: Smoking and α1-antitrypsin deficiency allow unchecked protease activity, destroying alveolar walls.

Question 13

13. In COPD, which gas is most difficult to eliminate due to air trapping?
    A. Carbon dioxide
    B. Oxygen
    C. Nitrogen
    D. Helium

Answer 13

Correct Answer: A
Rationale: CO₂ retention occurs due to hypoventilation and airway obstruction. Oxygen absorption is impaired but not “trapped.”

Question 14

14. Which condition causes chronic stimulation of erythropoietin release in COPD?
    A. Chronic hypoxemia
    B. Chronic hypercapnia
    C. Increased FEV1
    D. Alveolar hyperventilation

Answer 14

Correct Answer: A
Rationale: Chronic hypoxemia → kidneys secrete erythropoietin → secondary polycythemia. Hypercapnia has less direct effect.

Question 15

15. Which sound is most often heard on auscultation in chronic bronchitis?
    A. Rhonchi
    B. Fine crackles
    C. Stridor
    D. Pleural friction rub

Answer 15

Correct Answer: A
Rationale: Rhonchi = coarse sounds from mucus-filled airways. Crackles may occur, but stridor and rubs are unrelated.

Question 16

16. Which part of the respiratory system is primarily narrowed due to chronic bronchitis?
    A. Bronchioles
    B. Alveoli
    C. Pleura
    D. Diaphragm

Answer 16

Correct Answer: A
Rationale: Chronic bronchitis narrows and obstructs bronchioles through inflammation and mucus hypersecretion. Alveoli are more affected in emphysema.

Question 17

17. Which pulmonary capillary change reduces gas exchange in emphysema?
    A. Loss of alveolar-capillary surface area
    B. Thickening of pleural membranes
    C. Dilatation of bronchial arteries
    D. Increased lymph drainage

Answer 17

Correct Answer: A
Rationale: Destruction of alveolar walls reduces diffusion area, causing hypoxemia.

Question 18

18. Which chest shape is characteristic of advanced COPD?
    A. Increased anterior-posterior diameter (“barrel chest”)
    B. Pectus excavatum
    C. Pectus carinatum
    D. Funnel chest

Answer 18

Correct Answer: A
Rationale: Air trapping leads to a barrel-shaped chest. The others are congenital deformities.

Question 19

19. Which abnormality in respiratory drive develops in some patients with severe chronic hypercapnia?
    A. Hypoxic drive predominance
    B. Hypercapnic drive predominance
    C. Reduced medullary sensitivity to hypoxemia
    D. Overstimulation of chemoreceptors

Answer 19

Correct Answer: A
Rationale: Chronic hypercapnia desensitizes CO₂ receptors, shifting breathing drive to low oxygen levels.

Question 20

20. Which acid-base imbalance is typical in advanced COPD?
    A. Chronic respiratory acidosis with metabolic compensation
    B. Acute respiratory alkalosis
    C. Primary metabolic acidosis
    D. Respiratory alkalosis with no compensation

Answer 20

Correct Answer: A
Rationale: CO₂ retention → respiratory acidosis; kidneys retain HCO₃⁻ as compensation.

Question 21

21. Which alveolar change leads to impaired elastic recoil in emphysema?
    A. Loss of alveolar septa
    B. Thickened basement membrane
    C. Alveolar hemorrhage
    D. Increased surfactant

Answer 21

Correct Answer: A
Rationale: Loss of alveolar septa reduces recoil, impairing exhalation.

Question 22

22. Which airway change is most prominent in chronic bronchitis?
    A. Goblet cell hyperplasia and mucous gland hypertrophy
    B. Fibrosis of alveolar ducts
    C. Thickening of pleural membranes
    D. Pulmonary embolism

Answer 22

Correct Answer: A
Rationale: Excess mucus production is a defining feature of chronic bronchitis.

Question 23

23. Which lung zone is most damaged in smoking-related emphysema?
    A. Upper lobes
    B. Lower lobes
    C. Lingula
    D. Pleural margins

Answer 23

Correct Answer: A
Rationale: Smoking-related emphysema predominantly affects upper lobes.

Question 24

24. Which abnormal sound indicates airway collapse during expiration in COPD?
    A. Wheezing
    B. Fine crackles
    C. Stridor
    D. Pleural rub

Answer 24

Correct Answer: A
Rationale: Wheezing reflects narrowed or collapsed small airways.

Question 25

25. Which abnormal chest movement pattern may be seen in advanced COPD due to diaphragmatic flattening? A. Hoover’s sign (inward movement of lower chest during inspiration) B. Paradoxical thoracic breathing C. Kussmaul respiration D. Seesaw breathing

Answer 25

Correct Answer: A Rationale: Flattened diaphragm pulls chest wall inward on inspiration → Hoover’s sign.

Question 26

26. In COPD, what is the primary cause of airflow limitation? A. Airway inflammation and remodeling B. Reduced pulmonary perfusion C. Excess surfactant production D. Pulmonary fibrosis

Answer 26

Correct Answer: A Rationale: Airflow limitation results from chronic airway inflammation, structural remodeling, and mucus plugging. Perfusion changes occur later; surfactant excess is unrelated; fibrosis is more common in restrictive lung disease.

Question 27

27. Which process explains the progressive hypercapnia seen in late-stage COPD? A. Impaired diffusion capacity B. Increased alveolar dead space C. Alveolar hypoventilation from respiratory muscle fatigue D. Excess renal bicarbonate loss

Answer 27

Correct Answer: D Rationale: In late-stage COPD, alveolar hypoventilation from respiratory muscle fatigue reduces CO₂ elimination. Impaired diffusion is less important for CO₂; renal bicarbonate loss would cause acidosis but is not primary.

Question 28

28. Which structural damage is most characteristic of emphysema in COPD? A. Destruction of alveolar walls and capillaries B. Fibrosis of terminal bronchioles C. Thickening of the pleural lining D. Formation of bronchiectatic cavities

Answer 28

Correct Answer: C Rationale: Emphysema is defined by destruction of alveolar walls and capillaries, leading to loss of surface area. Fibrosis is restrictive, pleural thickening is not typical, and bronchiectasis is separate pathology.

Question 29

29. Which compensatory response develops as a result of chronic hypoxemia in COPD? A. Secondary polycythemia B. Increased tidal volume C. Pulmonary embolism D. Decreased pulmonary vascular resistance

Answer 29

Correct Answer: B Rationale: Chronic hypoxemia stimulates EPO release → secondary polycythemia. This thickens blood and contributes to pulmonary hypertension. Increased tidal volume is impaired, embolism is not compensatory, and vascular resistance increases, not decreases.

Question 30

30. Which mechanism leads to pulmonary hypertension in COPD? A. Hypoxic pulmonary vasoconstriction B. Pulmonary vein thrombosis C. Left atrial enlargement D. Decreased right ventricular afterload

Answer 30

Correct Answer: A Rationale: Chronic alveolar hypoxemia triggers hypoxic vasoconstriction, thickening vessel walls and leading to pulmonary hypertension. The others are not primary drivers in COPD.

Question 31

31. Which feature distinguishes chronic bronchitis from emphysema? A. Presence of productive cough for ≥3 months in 2 consecutive years B. Loss of alveolar walls C. Hyperinflation of lungs D. Flattened diaphragm

Answer 31

Correct Answer: D Rationale: Chronic bronchitis is clinically defined by persistent productive cough. Emphysema instead involves structural alveolar loss. Hyperinflation and flattened diaphragm are more linked to emphysema.

Question 32

32. Which imbalance between enzymes drives alveolar wall destruction in emphysema? A. Excess protease activity and reduced antiprotease defense B. Excess lipase activity C. Increased renin activity D. Reduced surfactant secretion

Answer 32

Correct Answer: C Rationale: The central pathophysiology is protease-antiprotease imbalance, e.g., smoking increases neutrophil elastase, α1-antitrypsin deficiency reduces defense. Lipase, renin, and surfactant are unrelated.

Question 33

33. Which finding best explains exercise intolerance in COPD? A. Dynamic hyperinflation reducing inspiratory capacity B. Increased hemoglobin concentration C. Increased diffusion capacity of the lungs D. Hypersensitivity of peripheral chemoreceptors

Answer 33

Correct Answer: B Rationale: Exercise intolerance arises from dynamic hyperinflation limiting inspiratory capacity. Hemoglobin increases but doesn’t improve oxygen delivery efficiency. Diffusion capacity is reduced, not increased.

Question 34

34. In advanced COPD, which ABG pattern is most expected? A. Chronic respiratory acidosis with metabolic compensation B. Acute respiratory alkalosis C. Metabolic alkalosis without respiratory involvement D. Mixed metabolic acidosis and alkalosis

Answer 34

Correct Answer: A Rationale: COPD → CO₂ retention → chronic respiratory acidosis. Kidneys compensate by retaining HCO₃⁻. The others do not describe the chronic compensated state.

Question 35

35. Which systemic manifestation is caused by chronic hypoxemia in COPD? A. Digital clubbing B. Portal hypertension C. Splenomegaly D. Hyperthyroidism

Answer 35

Correct Answer: D Rationale: Digital clubbing may occur in chronic hypoxemia and long-standing COPD, although it’s more prominent in other chronic hypoxic diseases. Portal hypertension and splenomegaly are unrelated; thyroid is not directly linked.

Question 36

36. Which physiologic mechanism explains the use of accessory muscles in COPD patients? A. Increased airway resistance prolonging expiration B. Increased lung compliance facilitating recoil C. Reduced metabolic demand D. Improved efficiency of diaphragm contraction

Answer 36

Correct Answer: A Rationale: Increased airway resistance makes breathing harder, requiring accessory muscle recruitment. Compliance is increased, but recoil is reduced, not improved.

Question 37

37. In α1-antitrypsin deficiency, emphysema most severely affects which lung region? A. Lower lobes B. Upper lobes C. Pleural lining D. Middle lobe

Answer 37

Correct Answer: C Rationale: α1-antitrypsin deficiency leads to panacinar emphysema in lower lobes, unlike smoking which affects upper lobes.

Question 38

38. Which vascular effect is seen in COPD that contributes to cor pulmonale? A. Pulmonary artery remodeling with intimal thickening B. Systemic arterial dilation C. Pulmonary venous hypertension D. Increased coronary perfusion

Answer 38

Correct Answer: B Rationale: Chronic hypoxemia and inflammation → pulmonary artery remodeling and intimal thickening. This increases pulmonary arterial pressure and RV workload.

Question 39

39. Which condition describes “blue bloater” phenotype in COPD? A. Chronic bronchitis with hypoxemia and hypercapnia B. Emphysema with cachexia C. Asthma-COPD overlap D. Pulmonary fibrosis

Answer 39

Correct Answer: D Rationale: “Blue bloaters” = chronic bronchitis patients with cyanosis, edema, hypoxemia. “Pink puffers” = emphysema.

Question 40

40. Which cause explains skeletal muscle wasting in advanced COPD? A. Increased systemic inflammation and energy expenditure B. Reduced physical activity only C. Increased testosterone levels D. Increased oxygen delivery to muscles

Answer 40

Correct Answer: A Rationale: COPD → systemic inflammation, hypoxemia, reduced activity, and increased energy cost of breathing → muscle wasting.

Question 41

41. Which pulmonary complication is COPD a major risk factor for? A. Spontaneous pneumothorax due to bullae rupture B. Pulmonary fibrosis C. Sarcoidosis D. Pleural mesothelioma

Answer 41

Correct Answer: B Rationale: COPD patients can develop pneumothorax from rupture of overdistended alveoli/bullae. Fibrosis, sarcoidosis, and mesothelioma are unrelated primary outcomes.

Question 42

42. Which mechanism explains the frequent lung infections seen in chronic bronchitis? A. Impaired mucociliary clearance with mucus stasis B. Increased alveolar macrophage activity C. Overproduction of surfactant D. Enhanced immune surveillance

Answer 42

Correct Answer: C Rationale: Mucociliary clearance failure + excess mucus creates a breeding ground for infection. The other options don’t increase infection risk.

Question 43

43. Which electrolyte abnormality may develop in COPD patients with chronic CO₂ retention and renal compensation? A. Hyperkalemia B. Hypochloremia C. Hypernatremia D. Hypocalcemia

Answer 43

Correct Answer: B Rationale: Renal HCO₃⁻ retention often leads to hypochloremia. Hyperkalemia/hypernatremia are not typical in this context.

Question 44

44. Which neurologic complication can occur in COPD due to chronic hypercapnia? A. CO₂ narcosis with altered mental status B. Seizures from hypocalcemia C. Stroke from increased intracranial hemorrhage D. Peripheral neuropathy

Answer 44

Correct Answer: D Rationale: Severe hypercapnia → CO₂ narcosis, drowsiness, confusion, coma. The others are unrelated to CO₂ buildup.

Question 45

45. Which pathologic change in the pulmonary arteries contributes to worsening hypoxemia? A. Smooth muscle hypertrophy and intimal fibrosis B. Increased surfactant secretion C. Widening of alveolar-capillary interface D. Hyperplasia of cilia

Answer 45

Correct Answer: A Rationale: Chronic hypoxemia causes vascular remodeling → pulmonary hypertension → worsened V/Q mismatch.

Question 46

46. Which blood gas result is most consistent with moderate COPD exacerbation? A. pH 7.32, PaCO₂ 55 mmHg, HCO₃⁻ 28 mEq/L B. pH 7.50, PaCO₂ 30 mmHg, HCO₃⁻ 22 mEq/L C. pH 7.40, PaCO₂ 35 mmHg, HCO₃⁻ 24 mEq/L D. pH 7.60, PaCO₂ 20 mmHg, HCO₃⁻ 18 mEq/L

Answer 46

Correct Answer: B Rationale: COPD → respiratory acidosis with renal compensation. The closest option is low pH, high PaCO₂, elevated HCO₃⁻.

Question 47

47. Which genetic disorder predisposes younger, nonsmoking patients to emphysema? A. α1-antitrypsin deficiency B. Cystic fibrosis C. Marfan syndrome D. Hemochromatosis

Answer 47

Correct Answer: C Rationale: α1-antitrypsin deficiency causes early-onset emphysema, especially in lower lobes. The other disorders are not direct causes.

Question 48

48. Which phenomenon occurs when alveoli collapse during expiration in COPD? A. Dynamic airway collapse with air trapping B. Compensatory alveolar recruitment C. Surfactant overproduction D. Increased alveolar perfusion

Answer 48

Correct Answer: B Rationale: Loss of structural support causes dynamic airway collapse, trapping air in lungs.

Question 49

49. Which systemic acid-base compensation is expected in a stable COPD patient? A. Elevated serum bicarbonate from renal retention B. Reduced serum bicarbonate from renal excretion C. Increased chloride levels D. Increased lactic acid

Answer 49

Correct Answer: C Rationale: Kidneys retain bicarbonate to compensate for chronic CO₂ retention.

Question 50

50. Which structural change explains why emphysema patients often have reduced diffusion capacity (DLCO)? A. Loss of alveolar-capillary surface area B. Increased pulmonary capillary blood volume C. Thickened pleura D. Mucus plugging in large bronchi

Answer 50

Correct Answer: D Rationale: Loss of alveolar-capillary surface area reduces DLCO in emphysema. Mucus plugging occurs more in chronic bronchitis.

Question 51

51. A patient with COPD is admitted in moderate distress. Which initial nursing intervention is most appropriate? A. Place the patient in high Fowler’s position B. Provide a high-carbohydrate meal C. Begin fluid restriction D. Administer sedatives for anxiety

Answer 51

Correct Answer: A Rationale: High Fowler’s improves lung expansion and reduces diaphragmatic restriction. High-carb meals increase CO₂ production. Fluid restriction is not indicated unless cardiac failure is present. Sedatives may suppress respiratory drive.

Question 52

52. A COPD patient reports increased shortness of breath. Which nursing action is the priority? A. Encourage coughing and deep breathing B. Administer oxygen at 6 L/min via nasal cannula C. Encourage rapid, shallow breaths D. Apply prescribed low-flow oxygen therapy

Answer 52

Correct Answer: D Rationale: COPD patients with chronic hypercapnia should receive controlled, low-flow O₂ (1–3 L/min) to prevent suppression of hypoxic drive. High-flow oxygen can worsen CO₂ retention.

Question 53

53. The nurse encourages pursed-lip breathing for a patient with COPD. What is the goal of this intervention? A. Prevent airway collapse during exhalation B. Improve diaphragm strength C. Reduce pulmonary hypertension D. Increase oxygen binding to hemoglobin

Answer 53

Correct Answer: C Rationale: Pursed-lip breathing prolongs exhalation and prevents airway collapse, decreasing air trapping. It does not directly strengthen the diaphragm or reduce pulmonary hypertension.

Question 54

54. A COPD patient on 2 L/min oxygen has an SpO₂ of 87%. What is the nurse’s best action? A. Reassess the patient, and titrate O₂ as prescribed B. Stop oxygen therapy immediately C. Place the patient in a prone position D. Encourage the patient to drink cold fluids

Answer 54

Correct Answer: B Rationale: Target SpO₂ in COPD is 88–92%. If the patient is at 87%, carefully titrating oxygen upward per order is safe. Stopping O₂ would worsen hypoxemia. Prone positioning is not used for COPD.

Question 55

55. During discharge teaching, the nurse advises a COPD patient to eat small, frequent meals. Why is this important? A. To reduce diaphragmatic pressure from a full stomach B. To maximize carbohydrate intake C. To increase oxygen consumption D. To decrease protein absorption

Answer 55

Correct Answer: A Rationale: Large meals distend the stomach, limiting diaphragm movement. Small meals reduce this effect. Carbohydrates increase CO₂ production; high protein is preferred.

Question 56

56. Which nursing intervention best conserves energy in a patient with severe COPD? A. Organizing care activities with rest periods B. Encouraging isometric exercises C. Teaching the patient to lie flat during rest D. Increasing fluid intake during activity

Answer 56

Correct Answer: D Rationale: Energy conservation = spacing activities with rest periods. Isometrics and lying flat worsen breathing; fluids are important but not the main intervention here.

Question 57

57. A COPD patient is being taught diaphragmatic breathing. Which statement indicates correct understanding? A. “I should place one hand on my abdomen and feel it rise as I breathe in.” B. “I should keep my chest moving more than my abdomen.” C. “I should take shallow, fast breaths to conserve energy.” D. “I should hold my breath after each inhalation.”

Answer 57

Correct Answer: C Rationale: Diaphragmatic breathing emphasizes abdominal movement during inhalation. Chest breathing and shallow breaths worsen ventilation. Holding breath is not recommended.

Question 58

58. The nurse notes thick secretions in a COPD patient. Which intervention is best? A. Encourage oral hydration unless contraindicated B. Place patient on fluid restriction C. Avoid use of humidified oxygen D. Withhold chest physiotherapy

Answer 58

Correct Answer: B Rationale: Hydration thins secretions, making them easier to clear. Fluid restriction thickens mucus. Humidification helps, not worsens, secretions.

Question 59

59. A COPD patient experiences sudden dyspnea during ambulation. What is the first nursing action? A. Assist the patient to sit and use pursed-lip breathing B. Encourage faster walking to improve stamina C. Withhold oxygen until SpO₂ <85% D. Place the patient in Trendelenburg position

Answer 59

Correct Answer: D Rationale: Sitting and pursed-lip breathing restores control of ventilation. Faster walking worsens dyspnea, withholding O₂ is unsafe, and Trendelenburg impairs breathing.

Question 60

60. Which teaching is most important for preventing COPD exacerbations? A. Avoiding crowds during flu season B. Increasing carbohydrate intake C. Maintaining a low-protein diet D. Reducing daily physical activity

Answer 60

Correct Answer: A Rationale: Respiratory infections are major triggers of exacerbations. Preventing exposure reduces risk. Carbohydrates increase CO₂ load; protein is beneficial.

Question 61

61. Which nursing action helps reduce anxiety in a patient with COPD-related dyspnea? A. Stay with the patient and coach controlled breathing B. Encourage rapid shallow breaths C. Restrict conversation to minimize exertion D. Administer high-dose sedatives

Answer 61

Correct Answer: A Rationale: Staying present and teaching controlled breathing reduces anxiety. Shallow breathing worsens gas exchange. Sedatives may depress respiratory drive.

Question 62

62. A nurse observes a COPD patient leaning forward with arms braced on a table. What is the purpose of this position? A. It improves diaphragmatic movement B. It reduces venous return C. It prevents bronchospasm D. It increases lung elasticity

Answer 62

Correct Answer: B Rationale: The tripod position stabilizes chest muscles and improves diaphragm mechanics, aiding breathing.

Question 63

63. Which is a key nursing action when administering oxygen therapy to a COPD patient? A. Monitor for signs of CO₂ retention B. Deliver oxygen at 10 L/min or more C. Disregard oxygen saturation trends D. Encourage hyperventilation

Answer 63

Correct Answer: C Rationale: In COPD, monitor for CO₂ narcosis due to reduced drive. High-flow O₂ risks worsening retention. Ignoring SpO₂ is unsafe.

Question 64

64. A COPD patient is prescribed chest physiotherapy. Which intervention enhances its effectiveness? A. Administering a bronchodilator before the procedure B. Performing after meals C. Restricting fluid intake D. Placing patient supine without pillows

Answer 64

Correct Answer: D Rationale: Giving a bronchodilator before CPT opens airways, making mucus clearance easier. After meals risks aspiration.

Question 65

65. A patient with COPD has thick sputum difficult to expectorate. Which intervention is best? A. Increase fluid intake and humidify oxygen B. Restrict fluids to prevent overload C. Use cold, dry air during therapy D. Minimize activity to conserve energy

Answer 65

Correct Answer: A Rationale: Fluids + humidification loosen sputum. Restricting fluids worsens it; cold, dry air irritates; activity is encouraged in moderation.

Question 66

66. Which activity should the nurse encourage for pulmonary rehabilitation in COPD patients? A. Regular walking or stationary cycling B. Intense weightlifting C. Avoiding all physical activity D. Sprint running for endurance

Answer 66

Correct Answer: D Rationale: Regular moderate activity improves conditioning and reduces dyspnea. Intense or sprinting activity is unsafe.

Question 67

67. Which nursing action reduces the risk of CO₂ narcosis in COPD patients receiving oxygen? A. Carefully titrate oxygen to maintain 88–92% saturation B. Administer high-concentration oxygen continuously C. Encourage withholding oxygen during sleep D. Ignore arterial blood gas monitoring

Answer 67

Correct Answer: A Rationale: Maintaining SpO₂ between 88–92% ensures safety without suppressing drive. High O₂ worsens CO₂ retention.

Question 68

68. A COPD patient asks why oxygen therapy is prescribed at low flow. Which explanation is best? A. “Your breathing is partly driven by low oxygen levels, and too much oxygen can reduce your drive.” B. “Low-flow oxygen prevents increased tidal volume.” C. “High oxygen flow improves mucus production.” D. “Oxygen therapy at high flow always worsens lung damage.”

Answer 68

Correct Answer: B Rationale: COPD patients may rely on hypoxic drive; excess oxygen reduces this, worsening hypercapnia. High oxygen doesn’t directly worsen lung tissue.

Question 69

69. A COPD patient develops peripheral edema. What is the most likely nursing concern? A. Cor pulmonale leading to right-sided heart failure B. Excessive fluid intake from hydration therapy C. Pulmonary embolism formation D. Direct alveolar rupture

Answer 69

Correct Answer: C Rationale: Peripheral edema is a sign of cor pulmonale. It is not due to hydration or embolism alone.

Question 70

70. Which nursing intervention best prevents aspiration in a COPD patient with weak cough? A. Encourage sitting upright during meals B. Provide thin liquids only C. Restrict swallowing exercises D. Position patient flat during feeding

Answer 70

Correct Answer: B Rationale: Upright position reduces aspiration risk. Thin liquids increase risk, not prevent it.

Question 71

71. Which discharge instruction helps a COPD patient conserve energy at home? A. Sit while performing activities like cooking B. Take rapid breaths during activity C. Avoid resting between tasks D. Lift heavy weights for strength

Answer 71

Correct Answer: A Rationale: Sitting during activity reduces workload. Rapid breathing, avoiding rest, and heavy lifting worsen dyspnea.

Question 72

72. Which nursing action supports effective secretion clearance in COPD? A. Teach controlled coughing techniques B. Encourage breath-holding after inhalation C. Avoid use of bronchodilators D. Encourage dry environments

Answer 72

Correct Answer: D Rationale: Huff coughing is an effective controlled cough technique. Breath-holding is unsafe, bronchodilators assist clearance, and dryness worsens secretions.

Question 73

73. A COPD patient with anxiety asks how to reduce breathlessness. Which nursing suggestion is best? A. Practice pursed-lip breathing during dyspnea B. Take fast, shallow breaths C. Limit rest periods to build endurance D. Lie flat to improve lung expansion

Answer 73

Correct Answer: A Rationale: Pursed-lip breathing reduces air trapping. Shallow breaths, fewer rests, and lying flat worsen symptoms.

Question 74

74. Which intervention should the nurse prioritize during a COPD exacerbation? A. Administer prescribed bronchodilators B. Encourage a full meal to increase energy C. Begin aerobic exercise training D. Place the patient in Trendelenburg position

Answer 74

Correct Answer: D Rationale: Bronchodilators relieve airway obstruction. Meals, exercise, and Trendelenburg worsen condition during exacerbation.

Question 75

75. A COPD patient expresses difficulty maintaining independence. Which nursing goal is most appropriate? A. Encourage adaptive equipment to conserve energy B. Restrict physical activity to prevent exacerbation C. Promote total dependence on caregivers D. Eliminate home oxygen therapy

Answer 75

Correct Answer: B Rationale: Energy conservation tools help independence. Restricting activity or eliminating O₂ worsens prognosis; dependence reduces quality of life.

Question 76

76. Which clinical manifestation is most characteristic of chronic bronchitis in COPD? A. Daily productive cough for at least 3 months in 2 consecutive years B. Marked weight loss and cachexia C. Digital clubbing D. Sudden onset hemoptysis

Answer 76

Correct Answer: A Rationale: Diagnostic hallmark of chronic bronchitis is persistent productive cough. Cachexia is more typical of emphysema, clubbing is less consistent, and hemoptysis is uncommon unless complicated.

Question 77

77. A patient with COPD presents with pursed-lip breathing and use of accessory muscles. What do these findings indicate? A. Increased work of breathing and air trapping B. Acute upper airway obstruction C. Presence of restrictive lung disease D. Impending laryngeal edema

Answer 77

Correct Answer: D Rationale: Pursed-lip breathing + accessory muscles indicate increased effort to overcome air trapping. The other options do not describe COPD manifestations.

Question 78

78. Which physical exam finding is most consistent with advanced emphysema? A. Barrel-shaped chest B. Dullness to percussion C. Inspiratory stridor D. Pleural friction rub

Answer 78

Correct Answer: C Rationale: Barrel chest results from chronic hyperinflation. Dullness occurs in effusion, stridor in obstruction, friction rub in pleuritis.

Question 79

79. A nurse assesses a COPD patient and notes cyanosis, edema, and productive cough. Which phenotype does this best describe? A. Blue bloater B. Pink puffer C. Asthmatic bronchitis D. Sarcoidosis

Answer 79

Correct Answer: B Rationale: Blue bloater refers to chronic bronchitis phenotype with hypoxemia, hypercapnia, cyanosis, and edema. Pink puffers describe emphysema.

Question 80

80. Which abnormal lung sound is most common during auscultation in a patient with chronic bronchitis? A. Coarse rhonchi B. Vesicular breath sounds C. Fine crepitations only at bases D. Absent breath sounds

Answer 80

Correct Answer: C Rationale: Coarse rhonchi indicate mucus in larger airways, classic for chronic bronchitis. Vesicular sounds are normal, fine crepitations suggest fibrosis, absent sounds indicate collapse/effusion.

Question 81

81. In an emphysema patient, chest percussion is most likely to reveal: A. Hyperresonance B. Dullness C. Tympany D. Flatness

Answer 81

Correct Answer: A Rationale: Hyperresonance occurs due to lung overinflation. Dullness = fluid, tympany = pneumothorax in GI spaces, flatness = solid organ.

Question 82

82. A patient with COPD demonstrates a low FEV1/FVC ratio. What does this indicate? A. Airflow obstruction B. Restrictive lung disease C. Impaired diffusion D. Pulmonary edema

Answer 82

Correct Answer: D Rationale: COPD is diagnosed with FEV1/FVC <70%, confirming airflow obstruction. Restrictive lung diseases reduce TLC.

Question 83

83. Which arterial blood gas result is most consistent with stable COPD? A. pH 7.36, PaCO₂ 52 mmHg, HCO₃⁻ 30 mEq/L B. pH 7.55, PaCO₂ 28 mmHg, HCO₃⁻ 22 mEq/L C. pH 7.42, PaCO₂ 40 mmHg, HCO₃⁻ 24 mEq/L D. pH 7.25, PaCO₂ 60 mmHg, HCO₃⁻ 22 mEq/L

Answer 83

Correct Answer: C Rationale: Chronic COPD often shows compensated respiratory acidosis with slightly low pH, high PaCO₂, and high HCO₃⁻.

Question 84

84. A patient with COPD reports difficulty in morning sputum clearance. Which manifestation explains this? A. Ciliary dysfunction and mucus hypersecretion B. Pleural effusion C. Alveolar hemorrhage D. Decreased pulmonary venous return

Answer 84

Correct Answer: B Rationale: In COPD, ciliary dysfunction and mucus accumulation overnight impair clearance. Pleural effusion and venous return are not explanations.

Question 85

85. Which diagnostic test best evaluates the degree of airflow obstruction in COPD? A. Spirometry B. Chest X-ray C. Arterial blood gas D. CT angiogram

Answer 85

Correct Answer: C Rationale: Spirometry confirms COPD, showing FEV1 and FEV1/FVC changes. CXR may show hyperinflation but not severity.

Question 86

86. Which finding on chest X-ray supports emphysema diagnosis? A. Flattened diaphragm B. Pleural effusion C. Cavitary lesion D. Patchy alveolar infiltrates

Answer 86

Correct Answer: A Rationale: Flattened diaphragms and hyperlucent lungs are classic in emphysema. Effusion = fluid, cavitation = TB, infiltrates = pneumonia.

Question 87

87. Which sign indicates cor pulmonale in a patient with COPD? A. Jugular venous distension B. Dullness to percussion C. Hyperresonant chest D. Inspiratory crackles

Answer 87

Correct Answer: B Rationale: JVD + edema indicate right heart failure due to pulmonary hypertension (cor pulmonale). The other findings don’t reflect cardiac strain.

Question 88

88. In COPD, why is DLCO (diffusing capacity) often reduced in emphysema? A. Loss of alveolar-capillary surface area B. Increased airway resistance C. Pulmonary edema D. Mucus plugging

Answer 88

Correct Answer: C Rationale: Emphysema destroys alveolar walls → reduced surface area for gas exchange → low DLCO.

Question 89

89. A nurse notices paradoxical inward movement of the lower chest during inspiration. What does this suggest? A. Hoover’s sign due to diaphragmatic flattening B. Flail chest C. Pleural effusion D. Tension pneumothorax

Answer 89

Correct Answer: D Rationale: Hoover’s sign is seen in COPD when hyperinflation flattens the diaphragm, pulling the chest wall inward.

Question 90

90. Which laboratory test is most useful in identifying COPD patients with α1-antitrypsin deficiency? A. Serum α1-antitrypsin level B. Arterial lactate C. BNP (B-type natriuretic peptide) D. Serum creatinine

Answer 90

Correct Answer: A Rationale: Low α1-antitrypsin confirms deficiency-related emphysema. BNP = heart failure, creatinine = kidney function.

Question 91

91. Which clinical feature differentiates emphysema (“pink puffer”) from chronic bronchitis (“blue bloater”)? A. Dyspnea with minimal cough B. Peripheral edema C. Cyanosis D. Chronic sputum production

Answer 91

Correct Answer: D Rationale: Emphysema patients are typically thin, dyspneic, with minimal cough. Chronic bronchitis causes cough and sputum.

Question 92

92. A COPD patient has an SpO₂ of 88%. Which nursing action is appropriate? A. Maintain oxygen therapy as ordered, target range 88–92% B. Immediately increase oxygen to 100% non-rebreather C. Discontinue oxygen therapy D. Place the patient supine

Answer 92

Correct Answer: A Rationale: In COPD, maintaining 88–92% saturation is safe. High O₂ worsens CO₂ retention; stopping therapy worsens hypoxemia.

Question 93

93. Which clinical finding is associated with chronic CO₂ retention in COPD? A. Flushed skin and bounding pulse B. Pale skin and hypotension C. Polyuria D. Reduced hematocrit

Answer 93

Correct Answer: D Rationale: CO₂ retention causes flushed skin, bounding pulse, confusion (CO₂ narcosis). Hypotension, polyuria, and low hematocrit are not typical.

Question 94

94. Which arterial blood gas result reflects acute COPD exacerbation with decompensation? A. pH 7.28, PaCO₂ 65 mmHg, HCO₃⁻ 26 mEq/L B. pH 7.40, PaCO₂ 40 mmHg, HCO₃⁻ 24 mEq/L C. pH 7.50, PaCO₂ 30 mmHg, HCO₃⁻ 22 mEq/L D. pH 7.36, PaCO₂ 52 mmHg, HCO₃⁻ 30 mEq/L

Answer 94

Correct Answer: B Rationale: Acute exacerbation shows low pH, high PaCO₂ without renal compensation. Option A fits best.

Question 95

95. Which test confirms airflow reversibility, helping differentiate COPD from asthma? A. Spirometry before and after bronchodilator B. DLCO measurement C. Chest CT D. Peak expiratory flow

Answer 95

Correct Answer: C Rationale: Post-bronchodilator spirometry distinguishes asthma (reversible) vs COPD (irreversible).

Question 96

96. A COPD patient complains of morning headaches. What is the most likely cause? A. CO₂ retention during sleep B. Hypertension C. Sinus infection D. Sleep apnea alone

Answer 96

Correct Answer: A Rationale: Morning headaches result from nocturnal hypercapnia. Sleep apnea can contribute, but COPD hypercapnia is primary.

Question 97

97. Which pulse oximetry trend in COPD requires urgent intervention? A. Sudden drop from 92% to 84% on oxygen B. Stable 89% with no change C. Fluctuation between 88–90% during exertion D. SpO₂ of 91% at rest

Answer 97

Correct Answer: D Rationale: A sudden drop indicates acute deterioration. Stable low-normal values may be expected in COPD.

Question 98

98. Which test is most useful in evaluating cor pulmonale in COPD? A. Echocardiogram B. Pulmonary angiogram C. Spirometry D. Sputum culture

Answer 98

Correct Answer: A Rationale: Echocardiography evaluates right ventricular function and pulmonary pressures in cor pulmonale.

Question 99

99. Which clinical sign indicates severe hypoxemia in COPD? A. Restlessness and confusion B. Increased appetite C. Elevated blood pressure D. Decreased sputum production

Answer 99

Correct Answer: C Rationale: Early hypoxemia manifests as restlessness, agitation, confusion. Appetite and sputum are not direct indicators.

Question 100

100. Which lab finding supports secondary polycythemia in COPD? A. Elevated hematocrit and hemoglobin B. Low erythropoietin levels C. Low hematocrit D. Reduced WBC count

Answer 100

Correct Answer: B Rationale: Chronic hypoxemia → erythropoietin stimulation → high hematocrit/hemoglobin.

Question 101

101. Which bronchodilator is typically used as first-line therapy in stable COPD management? A. Short-acting beta₂-agonist (SABA) B. Corticosteroid inhaler C. Leukotriene inhibitor D. Antibiotics

Answer 101

Correct Answer: A Rationale: SABAs like albuterol provide rapid bronchodilation for symptom relief. Corticosteroids are added for frequent exacerbations, leukotriene inhibitors are asthma-specific, antibiotics are for infection.

Question 102

102. A COPD patient is prescribed tiotropium. Which teaching is most important? A. “Rinse your mouth after use to prevent oral thrush.” B. “This medication provides immediate relief for sudden dyspnea.” C. “Take this drug only when you have symptoms.” D. “Use this medication once daily as maintenance therapy.”

Answer 102

Correct Answer: D Rationale: Tiotropium is a long-acting muscarinic antagonist (LAMA), taken once daily for maintenance, not for acute relief. SABAs are for rescue.

Question 103

103. Which adverse effect is most associated with chronic systemic corticosteroid use in COPD patients? A. Osteoporosis and hyperglycemia B. Hypotension C. Increased muscle mass D. Hyperkalemia

Answer 103

Correct Answer: C Rationale: Long-term systemic steroids cause osteoporosis, hyperglycemia, immunosuppression. Hypotension and hyperkalemia are not typical; they cause muscle wasting, not increase.

Question 104

104. Which medication combination is recommended for COPD patients with frequent exacerbations despite bronchodilator therapy? A. Inhaled corticosteroid + long-acting beta₂-agonist (ICS + LABA) B. Antibiotic + diuretic C. Antihistamine + SABA D. ACE inhibitor + beta-blocker

Answer 104

Correct Answer: B Rationale: ICS + LABA improves lung function and reduces exacerbations. Antibiotics are only for infection, not routine. Antihistamines and cardiac drugs are not COPD standards.

Question 105

105. A nurse prepares to administer albuterol to a COPD patient. Which effect should the nurse monitor for? A. Tachycardia and tremors B. Bradycardia C. Hypoglycemia D. Respiratory depression

Answer 105

Correct Answer: A Rationale: SABAs like albuterol may cause tachycardia, tremors, nervousness. Bradycardia, hypoglycemia, and depression are not expected.

Question 106

106. A patient with COPD is prescribed theophylline. Which nursing consideration is most important? A. Monitor serum drug levels to prevent toxicity B. Administer before meals to improve absorption C. Avoid concurrent use with oxygen therapy D. Give only for acute exacerbations

Answer 106

Correct Answer: D Rationale: Theophylline has a narrow therapeutic index, so serum levels must be monitored. It is not first-line but can be used in refractory COPD.

Question 107

107. Which therapy is most beneficial for improving survival in COPD patients with severe chronic hypoxemia? A. Long-term oxygen therapy B. Routine antibiotics C. Daily antihistamines D. Corticosteroid monotherapy

Answer 107

Correct Answer: C Rationale: Long-term O₂ therapy (≥15 hrs/day) improves survival. Antibiotics, antihistamines, and steroids alone do not prolong life.

Question 108

108. Which is a contraindication for prescribing nonselective beta-blockers in COPD patients? A. Risk of bronchospasm B. Increased mucociliary clearance C. Reduced risk of pulmonary hypertension D. Prevention of hypoxemia

Answer 108

Correct Answer: B Rationale: Nonselective beta-blockers may block beta₂ receptors → bronchospasm. Cardioselective beta-blockers may be used with caution.

Question 109

109. Which antibiotic is most commonly prescribed for acute COPD exacerbations with suspected bacterial infection? A. Azithromycin B. Amphotericin B C. Vancomycin D. Methotrexate

Answer 109

Correct Answer: C Rationale: Azithromycin or doxycycline are commonly prescribed for bacterial exacerbations. Amphotericin is antifungal, vancomycin is for resistant Gram+ infections, methotrexate is chemotherapy.

Question 110

110. A patient asks why corticosteroid inhalers are combined with LABAs in COPD treatment. What is the best response? A. “They reduce inflammation and improve bronchodilation together.” B. “They increase mucus secretion.” C. “They cure COPD permanently.” D. “They are only used during acute attacks.”

Answer 110

Correct Answer: B Rationale: ICS + LABA = anti-inflammatory + bronchodilation, reducing exacerbations. They do not cure or increase mucus.

Question 111

111. Which therapy helps reduce exacerbations and hospitalizations in severe COPD but carries risk of pneumonia? A. Inhaled corticosteroids B. Oxygen therapy C. Mucolytics D. Leukotriene inhibitors

Answer 111

Correct Answer: A Rationale: ICS reduce exacerbations but can increase pneumonia risk. O₂ improves survival, mucolytics thin secretions, leukotrienes are asthma-focused.

Question 112

112. A COPD patient on high-dose steroids presents with muscle weakness and moon face. What complication should the nurse suspect? A. Cushing’s syndrome B. Addison’s disease C. Hypothyroidism D. Diabetes insipidus

Answer 112

Correct Answer: D Rationale: Prolonged corticosteroid use causes Cushingoid features (moon face, weakness, truncal obesity). Addison’s and thyroid disease are unrelated.

Question 113

113. Which class of medications should a nurse expect to administer during an acute COPD exacerbation? A. Short-acting bronchodilators B. Long-acting muscarinic antagonists C. Leukotriene modifiers D. Antihypertensives

Answer 113

Correct Answer: B Rationale: Short-acting bronchodilators (SABA/SAMA) are the mainstay in exacerbations. LAMAs are for maintenance, leukotrienes for asthma, antihypertensives not COPD-specific.

Question 114

114. A patient with severe COPD is being evaluated for pulmonary rehabilitation. Which component is most essential? A. Exercise training with education B. Long-term corticosteroids C. High-flow oxygen therapy D. Complete bed rest

Answer 114

Correct Answer: C Rationale: Pulmonary rehab = exercise + education + nutrition support. Long-term steroids and bed rest worsen outcomes; high O₂ not always appropriate.

Question 115

115. Which surgical option may benefit a COPD patient with giant bullae causing compression of healthy lung tissue? A. Bullectomy B. Pleurodesis C. Thoracentesis D. Heart-lung transplant

Answer 115

Correct Answer: B Rationale: Bullectomy removes large bullae, improving ventilation. Pleurodesis is for effusion, thoracentesis for fluid, transplant is last resort.