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Pneumothorax & Respiratory Failure Most important Nursing MCQs Quiz with Answer and Rationale for NORCET EXAM

This Quiz Includes Most Important MCQs with Answer and detailed Rationale covering following Topic and Subtopics- Respiratory System Disorders ( Pneumothorax & Respiratory Failure )

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Here is most important Nursing MCQs for Various Nursing Exams like NORCET,DSSSB,PGIMER,AIIMS CRE,ESIC,RAILWAY,JIPMER,NIMHANS,NHM,CHO & State Nursing officer Exams.

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Nurses Preparation and Jobs alerts – Respiratory System Disorders Quiz
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Respiratory System Disorders (Pneumothorax&Respiratory failure) Quiz

1. Which clinical manifestation is considered a hallmark sign of a tension pneumothorax?
Answer: C. Tracheal deviation to the unaffected side
Rationale: As air builds up in the pleural space and cannot escape (tension pneumothorax), it creates high pressure that pushes the mediastinum, including the trachea, toward the unaffected side.
2. When assessing a patient with a suspected pneumothorax, what percussion note would the nurse expect to hear over the affected lung area?
Answer: C. Hyperresonance
Rationale: Hyperresonance is heard on percussion over areas of trapped air, such as in a pneumothorax. Dullness indicates fluid or solid tissue.
3. A patient is brought to the ED with a penetrating chest wound resulting in an open pneumothorax. What is the immediate nursing intervention?
Answer: A. Apply a sterile occlusive dressing taped on three sides
Rationale: Taping on three sides creates a flutter valve effect; air can escape during exhalation but is prevented from entering during inhalation, preventing a tension pneumothorax.
4. The nurse observes continuous bubbling in the water-seal chamber of a chest tube drainage system. What does this finding indicate?
Answer: C. There is an air leak in the system
Rationale: Intermittent bubbling with expiration/coughing is normal in a pneumothorax, but continuous bubbling in the water-seal chamber indicates an air leak.
5. Which type of pneumothorax occurs without any apparent cause or underlying lung disease, typically affecting tall, thin young men?
Answer: B. Primary spontaneous pneumothorax
Rationale: Primary spontaneous pneumothorax occurs in individuals without known lung disease, often due to the rupture of small apical blebs, and is classic in tall, thin males aged 20-40.
6. If a patient’s chest tube accidentally disconnects from the drainage system, what is the nurse’s immediate action?
Answer: C. Submerge the end of the chest tube in a bottle of sterile water
Rationale: Submerging the end in sterile water creates a temporary water seal to prevent air from entering the pleural space until a new system can be attached.
7. Which of the following conditions is considered a major risk factor for developing a secondary spontaneous pneumothorax?
Answer: A. Chronic Obstructive Pulmonary Disease (COPD)
Rationale: Secondary spontaneous pneumothorax occurs in the presence of underlying lung disease, with COPD being the most common cause due to ruptured alveoli or blebs.
8. A patient with a pneumothorax is experiencing paradoxical chest movement. This is typically associated with which condition?
Answer: C. Flail chest
Rationale: Flail chest occurs when multiple adjacent ribs are broken in multiple places, causing a segment of the chest wall to move inward on inspiration and outward on expiration (paradoxical movement).
9. What is the primary purpose of the suction control chamber in a traditional chest drainage system?
Answer: B. To regulate the amount of negative pressure applied to the pleural space
Rationale: The suction control chamber regulates the amount of suction (negative pressure) transmitted to the pleural space, usually determined by the water level in the chamber (e.g., -20 cm H2O).
10. During assessment, the nurse notes subcutaneous emphysema around the chest tube insertion site. How does the nurse describe this finding?
Answer: B. A crackling or popping sensation under the skin upon palpation
Rationale: Subcutaneous emphysema (crepitus) occurs when air escapes into the subcutaneous tissue, feeling like Rice Krispies or bubble wrap when palpated.
11. For a patient with an apical pneumothorax (air in the upper pleural space), where is the chest tube usually inserted?
Answer: A. 2nd or 3rd intercostal space, midclavicular line
Rationale: Because air rises, a chest tube intended to evacuate air (pneumothorax) is placed higher up in the anterior chest, typically at the 2nd or 3rd ICS.
12. A patient with a pneumothorax complains of sharp, stabbing chest pain that worsens on inspiration. This is documented as:
Answer: B. Pleuritic pain
Rationale: Pleuritic chest pain is sharp and localized, worsening with deep breathing, coughing, or movement, caused by inflammation or irritation of the pleura.
13. Which intervention is most appropriate for managing a patient with a very small (< 15%) primary spontaneous pneumothorax who is asymptomatic?
Answer: C. Observation and administration of supplemental oxygen
Rationale: Small, asymptomatic pneumothoraces may resolve spontaneously. High-flow oxygen increases the rate of pleural air absorption.
14. What is a common iatrogenic cause of a pneumothorax?
Answer: C. Central venous catheter insertion (subclavian line)
Rationale: Iatrogenic means caused by medical examination or treatment. Inserting a subclavian line carries a risk of puncturing the lung apex.
15. You are assessing a patient with a tension pneumothorax. What hemodynamic complication is most likely to occur?
Answer: A. Decreased cardiac output and hypotension
Rationale: The increased intrathoracic pressure compresses the superior and inferior vena cava, decreasing venous return to the heart, which severely reduces cardiac output leading to hypotension.
16. The physician orders a needle decompression for a patient with a rapidly deteriorating tension pneumothorax. Where is the needle typically inserted?
Answer: C. 2nd intercostal space, midclavicular line
Rationale: Emergency needle decompression is typically performed at the 2nd intercostal space in the midclavicular line on the affected side to quickly release trapped air.
17. Tidaling in the water-seal chamber of a chest tube system indicates:
Answer: A. The chest tube is patent and functioning normally
Rationale: Tidaling (fluctuation of water with inspiration and expiration) indicates that the pleural space communicates with the chamber and the system is patent. It stops when the lung re-expands or if there is a blockage.
18. To safely transport a patient with a chest tube, the nurse should:
Answer: C. Keep the drainage system below the level of the patient’s chest
Rationale: The system must remain upright and below chest level to prevent fluid from draining back into the pleural space. Clamping is contraindicated as it can cause a tension pneumothorax.
19. If the chest tube is accidentally pulled completely out of the patient’s chest, what is the best immediate action?
Answer: C. Apply a sterile occlusive dressing taped on 3 sides over the insertion site
Rationale: This prevents outside air from entering the chest cavity while allowing trapped pleural air to escape, preventing a tension pneumothorax.
20. What diagnostic test is the definitive standard for diagnosing a pneumothorax?
Answer: B. Upright Chest X-ray
Rationale: An upright PA (posterior-anterior) chest X-ray will clearly show the visceral pleural line and the absence of lung markings peripheral to it.
21. During a thoracentesis to treat a large pleural effusion, what complication should the nurse monitor for closely?
Answer: A. Iatrogenic pneumothorax
Rationale: Puncture of the visceral pleura during thoracentesis can inadvertently introduce air into the pleural space, causing an iatrogenic pneumothorax.
22. What finding upon auscultation is expected in a patient with a large pneumothorax?
Answer: C. Diminished or absent breath sounds on the affected side
Rationale: Air in the pleural space prevents lung expansion and sound transmission, leading to decreased or absent breath sounds on the side of the pneumothorax.
23. A chemical pleurodesis may be performed for a patient with recurrent spontaneous pneumothoraces. The purpose of this procedure is to:
Answer: B. Create adhesions between the parietal and visceral pleura
Rationale: Pleurodesis uses a chemical irritant (like talc) to inflame the pleurae, causing them to stick together, obliterating the pleural space and preventing future pneumothoraces.
24. What position is best for a patient who has just had a chest tube inserted for a pneumothorax?
Answer: C. Semi-Fowler’s or High-Fowler’s position
Rationale: Elevating the head of the bed promotes optimal lung expansion, eases breathing, and facilitates the rise of air to the apex where the tube is located.
25. When is clamping a chest tube clinically indicated?
Answer: C. Briefly to locate an air leak or when changing the drainage system
Rationale: Clamping should only be done momentarily to check for air leaks or change the system, or prior to removal with a physician’s order. Routine clamping can cause tension pneumothorax.
26. Acute Respiratory Failure (ARF) is broadly defined by which of the following ABG parameters on room air?
Answer: B. PaO2 < 60 mmHg and/or PaCO2 > 50 mmHg with a pH < 7.35
Rationale: ARF is defined clinically as hypoxemia (PaO2 < 60) or hypercapnia (PaCO2 > 50) occurring with acidemia (pH < 7.35).
27. Type 1 Respiratory Failure is best characterized by:
Answer: B. Hypoxemia without hypercapnia
Rationale: Type 1 ARF is hypoxemic failure (PaO2 < 60) with a normal or low PaCO2, typically caused by V/Q mismatch or shunting (e.g., ARDS, pneumonia).
28. Which of the following conditions is a primary cause of hypercapnic (Type 2) respiratory failure?
Answer: C. Chronic Obstructive Pulmonary Disease (COPD) exacerbation
Rationale: Type 2 (hypercapnic) failure is a failure of ventilation. Airway obstruction in COPD traps air, leading to CO2 accumulation (PaCO2 > 50).
29. An early sign of hypoxemia in a patient with impending respiratory failure is:
Answer: D. Restlessness and confusion
Rationale: The brain is highly sensitive to O2 levels. Early signs of hypoxia include neurological changes like restlessness, agitation, and confusion. Cyanosis is a late sign.
30. The pathophysiology of Acute Respiratory Distress Syndrome (ARDS) primarily involves:
Answer: A. Increased alveolar-capillary membrane permeability leading to non-cardiogenic pulmonary edema
Rationale: ARDS is characterized by systemic inflammation that damages the alveolar-capillary membrane, allowing fluid and protein to flood the alveoli.
31. What is the classic hallmark manifestation of ARDS?
Answer: B. Refractory hypoxemia despite increasing amounts of supplemental oxygen
Rationale: Because the alveoli are filled with fluid (shunting), administering higher concentrations of oxygen cannot reach the blood, resulting in refractory hypoxemia.
32. Which position is often utilized to improve oxygenation in severe ARDS patients?
Answer: C. Prone
Rationale: Prone positioning takes the weight of the heart and abdominal organs off the lungs and helps recruit collapsed alveoli in the posterior lung fields, significantly improving oxygenation.
33. In respiratory failure, a V/Q mismatch occurs when:
Answer: C. There is ventilation without perfusion or perfusion without ventilation
Rationale: V/Q mismatch means air gets to the alveoli but blood doesn’t (dead space, e.g., PE), or blood gets to the alveoli but air doesn’t (shunt, e.g., pneumonia/ARDS).
34. An opiate overdose causing severe respiratory depression will lead to which acid-base imbalance?
Answer: B. Respiratory acidosis
Rationale: Opiates depress the respiratory center, leading to hypoventilation. CO2 builds up in the blood, combining with water to form carbonic acid, causing respiratory acidosis.
35. When managing a patient with ARDS on mechanical ventilation, what setting is crucial to keep alveoli open at the end of expiration?
Answer: C. Positive End-Expiratory Pressure (PEEP)
Rationale: PEEP maintains positive pressure in the airways at the end of exhalation, preventing alveolar collapse, improving gas exchange, and treating refractory hypoxemia.
36. What is a common complication of applying high levels of PEEP in mechanically ventilated patients?
Answer: A. Barotrauma (pneumothorax) and decreased cardiac output
Rationale: High PEEP increases intrathoracic pressure, which can rupture alveoli (barotrauma/pneumothorax) and compress blood vessels, reducing venous return and cardiac output.
37. A patient with Guillain-Barré syndrome is at risk for which type of respiratory failure?
Answer: B. Type 2 (Hypercapnic)
Rationale: Guillain-Barré causes descending/ascending muscle weakness. Weakness of the diaphragm and intercostal muscles leads to hypoventilation and hypercapnic respiratory failure.
38. In a patient with hypercapnic respiratory failure, what clinical sign might indicate CO2 narcosis?
Answer: C. Lethargy and somnolence
Rationale: High levels of CO2 depress the central nervous system. As CO2 rises, the patient becomes progressively lethargic, somnolent, and can slip into a coma (CO2 narcosis).
39. A “white-out” appearance on a chest X-ray is classically associated with:
Answer: B. ARDS
Rationale: Diffuse bilateral pulmonary infiltrates (“white-out” or “ground-glass” appearance) occur in ARDS due to massive fluid accumulation in the alveoli throughout both lungs.
40. During the exudative phase of ARDS (first 1-7 days), the nurse expects the patient to exhibit:
Answer: C. Tachypnea and profound dyspnea
Rationale: The exudative phase is characterized by fluid leaking into alveoli, causing severe hypoxemia. The body responds with rapid, shallow breathing (tachypnea) and severe breathlessness.
41. Which non-invasive ventilation method delivers two distinct levels of positive pressure (inspiratory and expiratory) and is often used for COPD exacerbations?
Answer: B. BiPAP
Rationale: Bilevel Positive Airway Pressure (BiPAP) provides a higher pressure during inspiration to help clear CO2 and a lower pressure during expiration, ideal for hypercapnic failure in COPD.
42. What medication is commonly administered to patients with ARF to decrease airway inflammation and bronchospasm?
Answer: A. Corticosteroids
Rationale: Corticosteroids (e.g., methylprednisolone) reduce airway inflammation and edema, particularly useful in asthma or COPD-related respiratory failure.
43. An intubated patient with ARDS has a sudden drop in oxygen saturation, absent breath sounds on the right side, and a deviated trachea. The nurse suspects:
Answer: B. Tension pneumothorax secondary to barotrauma
Rationale: High pressures (PEEP) in ARDS can rupture lung tissue. Sudden desaturation, absent breath sounds on one side, and tracheal deviation are classic signs of a tension pneumothorax.
44. Intrapulmonary shunting is a major cause of hypoxemia. Which statement best describes a shunt?
Answer: B. Blood flows through pulmonary capillaries but alveoli are fluid-filled and unventilated.
Rationale: Shunting occurs when blood bypasses functional alveoli without participating in gas exchange, such as when alveoli are filled with pus (pneumonia) or fluid (ARDS/pulmonary edema).
45. A patient in acute respiratory failure is restless and fighting the ventilator (dyssynchrony). What class of medication is frequently used to improve compliance with mechanical ventilation?
Answer: C. Sedatives / Neuromuscular blocking agents
Rationale: Sedatives (like Propofol) and sometimes neuromuscular blockers (paralytics) are used to relax the patient, reduce oxygen demand, and ensure synchronization with the ventilator.
46. Extracorporeal Membrane Oxygenation (ECMO) may be indicated in severe respiratory failure to:
Answer: C. Oxygenate the blood outside the body, allowing the lungs time to rest and heal
Rationale: ECMO acts as an artificial lung, pumping blood out of the body, oxygenating it, removing CO2, and returning it, thereby resting the severely damaged lungs (as in severe ARDS).
47. What is the most common indirect cause of ARDS?
Answer: A. Sepsis
Rationale: While aspiration and trauma are direct causes, Sepsis (systemic infection) is the most common indirect and overall cause of ARDS due to massive systemic inflammatory response.
48. Which nutritional strategy is optimal for a patient with prolonged ARF on a ventilator?
Answer: C. Early enteral nutrition via a nasogastric or orogastric tube
Rationale: Enteral feeding maintains gut mucosa integrity and is preferred over TPN. High carbohydrate diets are avoided as breaking down carbs produces excess CO2, increasing respiratory workload.
49. A patient with hypercapnic respiratory failure complains of a morning headache. What is the physiological reason for this?
Answer: B. CO2 accumulation causes cerebral vasodilation
Rationale: Elevated PaCO2 levels cause cerebral blood vessels to dilate, increasing intracranial pressure and leading to the classic “morning headache” in hypoventilating patients.
50. The nurse is caring for a patient on a ventilator. The high-pressure alarm sounds. Which of the following could be the cause?
Answer: A. Patient coughing or biting the tube
Rationale: High-pressure alarms indicate an obstruction to airflow, such as secretions, coughing, biting the tube, or pneumothorax. Disconnection or leaks trigger a low-pressure alarm.

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  1. Pneumonia,Tuberculosis& Pleural Effusion Most important Nursing MCQs Quiz with Answer and Rationale for NORCET EXAM – Nurses Preparation and Jobs Alerts

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