Respiratory Therapist Practice Test

Sample Questions and Answers

Question 1: A patient with chronic obstructive pulmonary disease (COPD) reports increasing shortness of breath. What should the respiratory therapist do first?

A. Immediately increase oxygen to the highest flow rate available.
B. Perform a comprehensive respiratory assessment, including respiratory rate, breath sounds, oxygen saturation, and work of breathing.
C. Begin mechanical ventilation without assessment.
D. Administer medication without reviewing the patient’s condition.

Answer: B. Perform a comprehensive respiratory assessment, including respiratory rate, breath sounds, oxygen saturation, and work of breathing.

Explanation: Patient assessment is the foundation of effective respiratory care. Before selecting or modifying treatment, the respiratory therapist should evaluate the patient’s respiratory status, oxygen saturation, breathing pattern, lung sounds, and overall clinical condition. This information guides appropriate interventions and helps identify the severity of respiratory distress. Performing a thorough assessment promotes patient safety, supports evidence-based clinical decisions, and is a fundamental competency evaluated on respiratory therapy certification examinations.

Question 2: What is the primary purpose of pulse oximetry in respiratory care?

A. To measure blood glucose levels.
B. To estimate the percentage of oxygen saturation in arterial blood.
C. To determine blood pressure.
D. To diagnose bacterial infections.

Answer: B. To estimate the percentage of oxygen saturation in arterial blood.

Explanation: Pulse oximetry is a noninvasive monitoring tool used to estimate arterial oxygen saturation (SpO₂). It helps respiratory therapists assess oxygenation, monitor treatment effectiveness, and identify patients who may require additional respiratory support. While pulse oximetry provides valuable information about oxygen saturation, it does not measure ventilation, carbon dioxide levels, or acid-base balance. Understanding the appropriate use and limitations of pulse oximetry is an essential skill for respiratory therapists and is commonly tested on certification exams.

Question 3: Before administering aerosol therapy, what should the respiratory therapist verify first?

A. The patient’s favorite medication flavor.
B. The healthcare provider’s order, the correct medication, dosage, and patient identity.
C. Whether the patient has already eaten lunch.
D. The patient’s insurance information.

Answer: B. The healthcare provider’s order, the correct medication, dosage, and patient identity.

Explanation: Medication safety begins by verifying the provider’s order and confirming the correct patient, medication, dosage, route, and timing before administration. Respiratory therapists should also review allergies, assess the patient’s respiratory status, and explain the procedure when appropriate. Careful verification reduces the risk of medication errors and supports safe, effective respiratory care. Medication administration principles are an important component of respiratory therapy certification examinations and everyday clinical practice.

Question 4: Why is proper infection prevention important during respiratory therapy procedures?

A. It only protects healthcare equipment.
B. It helps reduce the transmission of infectious organisms between patients and healthcare professionals.
C. It eliminates the need for respiratory assessments.
D. It shortens all treatment times.

Answer: B. It helps reduce the transmission of infectious organisms between patients and healthcare professionals.

Explanation: Respiratory therapists frequently perform procedures that may generate respiratory droplets or involve direct patient contact. Following infection prevention practices such as hand hygiene, appropriate use of personal protective equipment (PPE), and proper equipment handling helps reduce the spread of infectious diseases. Consistent adherence to infection control guidelines protects patients, healthcare workers, and visitors while maintaining a safe clinical environment. Infection prevention remains a critical topic on respiratory therapy certification examinations.

Question 5: A patient receiving oxygen therapy reports improved breathing after treatment. What should the respiratory therapist do next?

A. Discontinue monitoring because the patient feels better.
B. Reassess the patient’s respiratory status and evaluate the effectiveness of the therapy.
C. Remove the oxygen equipment immediately.
D. Increase the oxygen flow rate without reassessment.

Answer: B. Reassess the patient’s respiratory status and evaluate the effectiveness of the therapy.

Explanation: Ongoing patient reassessment is an essential part of respiratory care. After any intervention, respiratory therapists should evaluate the patient’s response by monitoring respiratory rate, oxygen saturation, breath sounds, work of breathing, and overall clinical status. Reassessment helps determine whether treatment goals have been achieved or whether additional interventions are needed. Continuous monitoring supports evidence-based care, improves patient outcomes, and ensures safe respiratory therapy practice. Patient evaluation and treatment assessment are frequently tested on respiratory therapy certification examinations.

Question 6: A respiratory therapist is preparing to collect an arterial blood gas (ABG) sample. What should be verified before performing the procedure?

A. The patient’s preferred meal time.
B. Patient identity, the provider’s order, and any contraindications or precautions for arterial puncture.
C. The patient’s room temperature only.
D. The number of previous ABG samples collected that day.

Answer: B. Patient identity, the provider’s order, and any contraindications or precautions for arterial puncture.

Explanation: Before obtaining an ABG sample, the respiratory therapist should verify the patient’s identity, confirm the provider’s order, review the patient’s oxygen therapy status, and identify any conditions that may increase the risk of complications. Proper preparation helps ensure patient safety and accurate laboratory results. Following facility protocols and established clinical guidelines minimizes procedural risks while supporting quality respiratory care. Safe specimen collection and patient assessment are commonly evaluated on respiratory therapy certification examinations.

Question 7: Which assessment finding may indicate that a patient’s respiratory condition is worsening?

A. Decreased work of breathing with stable oxygen saturation.
B. Increasing respiratory rate, use of accessory muscles, and declining oxygen saturation.
C. Improved breath sounds after treatment.
D. Normal speech without shortness of breath.

Answer: B. Increasing respiratory rate, use of accessory muscles, and declining oxygen saturation.

Explanation: A rising respiratory rate, increased work of breathing, accessory muscle use, and falling oxygen saturation may indicate worsening respiratory distress and require prompt evaluation. Respiratory therapists should recognize early signs of deterioration, communicate findings to the healthcare team, and initiate appropriate interventions according to clinical protocols. Early recognition supports timely treatment, improves patient outcomes, and is an essential competency assessed on respiratory therapy certification exams.

Question 8: Why is humidification often used during oxygen therapy for certain patients?

A. To increase blood pressure.
B. To help maintain airway moisture and improve patient comfort during oxygen delivery.
C. To replace the need for respiratory medications.
D. To eliminate all respiratory secretions immediately.

Answer: B. To help maintain airway moisture and improve patient comfort during oxygen delivery.

Explanation: Supplemental oxygen can dry the respiratory mucosa, particularly during prolonged therapy or when delivered at higher flow rates. Humidification helps maintain moisture within the airways, reduces irritation, and improves patient comfort. While not required for every patient, appropriate humidification may benefit those receiving certain types of oxygen therapy. Respiratory therapists should follow facility policies and equipment guidelines when determining the need for humidification. Oxygen delivery systems are a common topic on respiratory therapy certification exams.

Question 9: What is the primary goal of patient education before using a metered-dose inhaler (MDI)?

A. To shorten the healthcare visit.
B. To ensure the patient understands the correct inhaler technique for effective medication delivery.
C. To eliminate the need for follow-up appointments.
D. To encourage patients to change medications frequently.

Answer: B. To ensure the patient understands the correct inhaler technique for effective medication delivery.

Explanation: Proper inhaler technique is essential for delivering medication effectively to the lungs. Respiratory therapists should demonstrate the correct steps, observe the patient’s technique, answer questions, and provide additional instruction when necessary. Incorrect inhaler use may reduce medication effectiveness and contribute to poor disease control. Patient education improves adherence, treatment outcomes, and confidence in self-management. Teaching inhaler techniques is an important responsibility of respiratory therapists and a commonly tested topic on certification examinations.

Question 10: Why is accurate documentation important after completing a respiratory therapy treatment?

A. It is only used for scheduling future appointments.
B. It provides a complete record of the treatment, the patient’s response, and supports communication among healthcare providers.
C. It replaces verbal communication with the healthcare team.
D. Documentation is optional if the patient improves.

Answer: B. It provides a complete record of the treatment, the patient’s response, and supports communication among healthcare providers.

Explanation: Accurate documentation is an essential part of respiratory care. Recording the treatment provided, patient assessment findings, therapy response, and any significant observations helps ensure continuity of care and supports clinical decision-making. Complete documentation also meets legal, regulatory, and quality assurance requirements while allowing other healthcare professionals to understand the patient’s current respiratory status. Documentation standards and professional responsibilities are important topics commonly included on respiratory therapy certification examinations.