Respiratory Care Techniques Quiz

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| Attempts: 16 | Questions: 29 | Updated: Jan 8, 2026
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1. ETT cuff will not inflate during intubation. What is the next step?

Explanation

A non-functioning cuff compromises ventilation and aspiration protection. Replacement is mandatory.

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2. How does hyperinflation therapy help post-op patients?

Explanation

Hyperinflation improves alveolar expansion, preventing atelectasis and infection.

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3. What should be done before suctioning a patient?

Explanation

Preoxygenation prevents hypoxia and arrhythmias during suction-induced oxygen loss.

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4. Which is a short-acting respiratory drug?

Explanation

Albuterol rapidly relaxes bronchial smooth muscle during acute bronchospasm.

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5. How do air bubbles affect ABG results?

Explanation

Air bubbles alter gas diffusion, skewing ABG results.

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6. What noninvasive monitor is used during anesthesia?

Explanation

Pulse oximetry continuously monitors oxygen saturation during anesthesia.

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7. How to protect airway in unconscious patient?

Explanation

OPA prevents tongue occlusion in unconscious patients.

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8. What is a benefit of an NPA?

Explanation

NPA maintains airway patency and is tolerated when OPA is contraindicated.

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9. What is the purpose of a cuff on an endotracheal tube?

Explanation

The cuff on an endotracheal tube seals the airway, allowing positive pressure ventilation while preventing aspiration of fluids. This seal ensures efficient oxygen delivery and protects the lungs from secretions.

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10. How many liters per minute of oxygen are given via nasal cannula?

Explanation

Nasal cannula delivers low-flow oxygen between 1–5 Lpm. Higher flows dry mucosa and lower flows fail to improve oxygenation.

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11. How does a pulse oximeter work?

Explanation

Pulse oximeters emit red and infrared light to detect hemoglobin oxygen saturation based on light absorption differences.

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12. What does DLCO measure?

Explanation

DLCO evaluates gas diffusion efficiency from alveoli into blood, reflecting alveolar-capillary membrane integrity.

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13. What values are measured in an ABG?

Explanation

ABG measures acid-base balance and oxygenation using pH, PaCO₂, PaO₂, and bicarbonate levels.

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14. What bedside test measures lung volumes?

Explanation

Spirometry measures lung volumes and airflow noninvasively at bedside.

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15. Resistance is felt while inserting an NPA. What should be done?

Explanation

Resistance indicates obstruction or anatomy mismatch. Switching nostrils avoids trauma.

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16. When should head-tilt chin-lift not be used?

Explanation

Head-tilt chin-lift risks spinal damage if cervical injury exists.

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17. Why is postural drainage beneficial?

Explanation

Gravity-assisted positioning improves secretion clearance across lung segments.

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18. Why calculate airway resistance?

Explanation

Increased airway resistance raises breathing effort, signaling obstruction or disease severity.

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19. What should a patient do after using inhaled corticosteroids?

Explanation

Mouth rinsing prevents oral candidiasis from steroid residue.

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20. Which waveform detects air trapping on a ventilator?

Explanation

Pressure waveform shows incomplete exhalation, indicating air trapping.

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21. What precautions are required for SARS patients?

Explanation

SARS spreads via contact, requiring enhanced infection control.

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22. Large tongue noted before intubation. What should be done?

Explanation

Jaw thrust moves the tongue anteriorly, clearing obstruction.

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23. What EKG change indicates hyperkalemia?

Explanation

Elevated potassium alters cardiac conduction, causing peaked T waves.

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24. Which electrolyte indicates dehydration from GI loss?

Explanation

Sodium reflects fluid balance and losses from GI routes.

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25. Why should a neonate’s heel be warmed before blood gas sampling?

Explanation

Warming dilates capillaries, improving blood flow and accuracy during neonatal sampling.

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26. What best defines work of breathing?

Explanation

Work of breathing reflects energy needed to inhale. Resistance directly increases workload.

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27. Best tool to assess oxygenation in mild asthma?

Explanation

Pulse oximetry provides rapid, noninvasive oxygenation assessment.

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28. Which test measures respiratory muscle strength?

Explanation

MIP measures diaphragm and inspiratory muscle strength.

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29. When is a CBC recommended?

Explanation

CBC screens for anemia, infection, and hematologic disorders routinely.

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ETT cuff will not inflate during intubation. What is the next step?
How does hyperinflation therapy help post-op patients?
What should be done before suctioning a patient?
Which is a short-acting respiratory drug?
How do air bubbles affect ABG results?
What noninvasive monitor is used during anesthesia?
How to protect airway in unconscious patient?
What is a benefit of an NPA?
What is the purpose of a cuff on an endotracheal tube?
How many liters per minute of oxygen are given via nasal cannula?
How does a pulse oximeter work?
What does DLCO measure?
What values are measured in an ABG?
What bedside test measures lung volumes?
Resistance is felt while inserting an NPA. What should be done?
When should head-tilt chin-lift not be used?
Why is postural drainage beneficial?
Why calculate airway resistance?
What should a patient do after using inhaled corticosteroids?
Which waveform detects air trapping on a ventilator?
What precautions are required for SARS patients?
Large tongue noted before intubation. What should be done?
What EKG change indicates hyperkalemia?
Which electrolyte indicates dehydration from GI loss?
Why should a neonate’s heel be warmed before blood gas sampling?
What best defines work of breathing?
Best tool to assess oxygenation in mild asthma?
Which test measures respiratory muscle strength?
When is a CBC recommended?
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