NCLEX Respiratory Practice Questions with Answers

Mastering NCLEX respiratory practice questions with answers is critical for nursing students because respiratory failure and airway obstruction are among the most immediate life-threatening emergencies encountered in clinical practice. The respiratory system is a frequent focus of the NCLEX-RN exam, testing your ability to prioritize care using the ABC (Airway, Breathing, Circulation) framework. Whether you are managing a patient with chronic obstructive pulmonary disease (COPD) or responding to a sudden pulmonary embolism, understanding gas exchange and acid-base balance is essential for patient safety.

Concept Explanation

Respiratory nursing care focuses on the physiological processes of ventilation, perfusion, and gas exchange to ensure adequate cellular oxygenation and carbon dioxide removal. Key concepts include the assessment of breath sounds, interpretation of arterial blood gases (ABGs), and the management of both acute and chronic conditions. In the NCLEX environment, you must distinguish between expected findings in chronic conditions—such as a slightly lower oxygen saturation in a patient with emphysema—and acute changes that indicate respiratory distress or failure. Many respiratory questions require knowledge of pharmacology, such as the use of bronchodilators, or procedural skills like tracheostomy care and chest tube management. For instance, when calculating medication dosages for respiratory patients, you might utilize dimensional analysis practice questions to ensure precision in delivering bronchodilators or steroids.

Key respiratory assessment findings include:

• Crackles (Rales): Clicking or popping sounds indicating fluid in the small airways (common in heart failure).
• Wheezes: High-pitched musical sounds caused by narrowed airways (common in asthma).
• Stridor: A high-pitched inspiratory sound indicating upper airway obstruction (a medical emergency).
• Cyanosis: A bluish discoloration of the skin or mucous membranes indicating severe hypoxemia.

Solved Examples

Example 1: Arterial Blood Gas Interpretation
A patient’s ABG results are: pH $7.31$, $PaCO_{2}$ $52 \text{ mmHg}$, and $HCO_{3}$ $24 \text{ mEq/L}$. Identify the acid-base imbalance.

1. Analyze the pH: $7.31$ is below the normal range of $7.35 - 7.45$, indicating acidosis.
2. Analyze the $PaCO_{2}$: $52 \text{ mmHg}$ is above the normal range of $35 - 45 \text{ mmHg}$. Since CO2 is an acid, an increase causes acidosis.
3. Analyze the $HCO_{3}$: $24 \text{ mEq/L}$ is within the normal range of $22 - 26 \text{ mEq/L}$.
4. Conclusion: Because the pH and $PaCO_{2}$ move in opposite directions, this is Respiratory Acidosis.

Example 2: Oxygen Delivery Calculation
A physician orders oxygen at $3 \text{ L/min}$ via nasal cannula. What is the approximate fraction of inspired oxygen ($FiO_{2}$) the patient is receiving?

1. Recall the baseline $FiO_{2}$ of room air is $21\%$.
2. For every $1 \text{ L/min}$ of oxygen, the $FiO_{2}$ increases by approximately $4\%$.
3. Calculate: $$21\% + (3 \times 4\%) = 21\% + 12\% = 33\%$$
4. Conclusion: The patient is receiving approximately $33\%$ $FiO_{2}$.

Example 3: Chest Tube Assessment
The nurse observes vigorous bubbling in the water seal chamber of a chest tube drainage system. What is the priority action?

1. Recognize that intermittent bubbling in the water seal chamber during expiration or coughing is normal.
2. Recognize that continuous or vigorous bubbling indicates an air leak in the system or the patient's pleural space.
3. Action: Check all connections for tightness and assess the patient’s respiratory status. If the leak is not found, notify the healthcare provider.
4. Conclusion: The priority is to identify the source of the air leak.

Practice Questions

1. A nurse is caring for a patient with a history of COPD who is receiving oxygen at $2 \text{ L/min}$ via nasal cannula. The patient’s oxygen saturation is $89\%$. What is the nurse's best action?

2. A patient with asthma presents to the emergency department with audible wheezing and a respiratory rate of $28 \text{ breaths/min}$. After receiving a nebulized albuterol treatment, the nurse notes that the patient’s breath sounds are now absent. How should the nurse interpret this finding?

3. Following a thoracentesis, which clinical manifestation should the nurse report immediately to the healthcare provider?

4. A nurse is preparing to suction a patient with an endotracheal tube. Which action is most important for the nurse to take before beginning the procedure?

5. A patient has been diagnosed with a pulmonary embolism. Which diagnostic test is considered the "gold standard" for confirming this diagnosis?

6. While assessing a patient with a chest tube, the nurse notes that the fluid in the water seal chamber rises with inspiration and falls with expiration. What does this indicate?

7. A nurse is teaching a patient how to use an incentive spirometer. How many times per hour should the nurse recommend the patient perform this exercise while awake?

8. Which positioning is most appropriate for a patient experiencing acute dyspnea?

9. A patient is prescribed theophylline for chronic bronchitis. Which dietary restriction should the nurse include in the teaching plan?

10. A nurse is assessing a patient with pneumonia. Which tactile fremitus finding is expected over the area of consolidation?

Answers & Explanations

1. Answer: Continue to monitor the patient. For patients with COPD, an oxygen saturation between $88\%$ and $92\%$ is often the target range. Increasing oxygen too much can suppress their hypoxic drive to breathe.
2. Answer: This is a medical emergency (Silent Chest). The sudden disappearance of wheezing without clinical improvement indicates that the airways have closed completely, and the patient is no longer moving air.
3. Answer: Asymmetrical chest expansion. This may indicate a pneumothorax, a potential complication of a thoracentesis where the lung is accidentally punctured.
4. Answer: Hyperoxygenate the patient. Suctioning removes oxygen as well as secretions, so providing $100\%$ oxygen for 30-60 seconds prior to the procedure prevents hypoxemia.
5. Answer: Computed Tomography Pulmonary Angiography (CTPA). This imaging is the primary tool used by the National Heart, Lung, and Blood Institute standards to visualize clots in the pulmonary vasculature.
6. Answer: Normal functioning (Tidaling). Tidaling is the expected movement of fluid in the water seal chamber that reflects changes in intrapleural pressure during the respiratory cycle.
7. Answer: 10 times per hour. Frequent use of the incentive spirometer helps prevent atelectasis and pneumonia by encouraging deep breathing and lung expansion.
8. Answer: High-Fowler's or Orthopneic position. These positions allow for maximum chest expansion and reduce the work of breathing.
9. Answer: Avoid caffeine. Theophylline is a methylxanthine, and caffeine (also a methylxanthine) can increase the risk of toxicity and adverse effects like tachycardia.
10. Answer: Increased tactile fremitus. Sound and vibration travel better through solid or fluid-filled medium (consolidation) than through air-filled lungs.

For more complex scenarios involving medication management, you may find hard NCLEX pharmacology practice questions helpful to sharpen your clinical judgment. Additionally, if you need to build your confidence with fundamental calculations, check out our easy NCLEX dosage calculation practice questions.

1. Which breath sound is characterized by a high-pitched, musical sound heard primarily on expiration?

• ACrackles
• BWheeze
• CRhonchi
• DPleural friction rub

Frequently Asked Questions

What is the priority nursing intervention for a patient with a PE?

The priority is to stabilize the patient's oxygenation and circulation by administering supplemental oxygen and initiating anticoagulation therapy as ordered. Assessing for signs of respiratory distress and maintaining bed rest to prevent further clot dislodgement are also essential.

How do I differentiate between respiratory acidosis and alkalosis?

Respiratory acidosis occurs when the lungs retain too much CO2 (pH < 7.35, PaCO2 > 45), often due to hypoventilation. Respiratory alkalosis occurs when the lungs blow off too much CO2 (pH > 7.45, PaCO2 < 35), typically caused by hyperventilation.

What are the signs of a tension pneumothorax?

Classic signs include tracheal deviation toward the unaffected side, absent breath sounds on the affected side, jugular venous distention, and hemodynamic instability. This is a life-threatening emergency requiring immediate needle decompression.

Why is it important to monitor theophylline levels?

Theophylline has a narrow therapeutic range ($10 - 20 \text{ mcg/mL}$). Levels above this range can lead to severe toxicity, manifesting as seizures, life-threatening arrhythmias, and persistent vomiting.

What is the difference between CPAP and BiPAP?

CPAP (Continuous Positive Airway Pressure) provides a single constant pressure during both inspiration and expiration. BiPAP (Bilevel Positive Airway Pressure) provides two different pressures: a higher pressure for inhalation and a lower pressure for exhalation, making it easier for some patients to breathe out.