SOLUTIONS 2026/2027 Comprehensive Q&A
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Q1: Which historical figure is credited with the discovery of oxygen in
1774, fundamentally advancing the understanding of respiratory gas
exchange?
• A) Robert Boyle
• B) Louis Pasteur
• C) Joseph Priestley
• D) Wilhelm Roentgen
Rationale: Joseph Priestley discovered oxygen in 1774 by heating mercuric
oxide, naming it "dephlogisticated air." This discovery was foundational to
understanding gas exchange and respiratory physiology. Robert Boyle
described the relationship between gas pressure and volume (Boyle's Law);
Louis Pasteur developed germ theory; Wilhelm Roentgen discovered X-rays in
1895.
Why Wrong: A describes Boyle's Law, B is germ theory, D is X-rays.
Q2: A respiratory therapist is asked to participate in a quality
improvement initiative to reduce ventilator-associated pneumonia
(VAP) rates in the ICU. Which professional competency best describes
this activity?
• A) Patient assessment and diagnostic testing
• B) Evidence-based practice and continuous quality improvement
(CQI)
• C) Patient education and disease prevention
, • D) Technical skills and equipment management
Rationale: Continuous quality improvement (CQI) and evidence-based
practice are essential competencies for respiratory therapists. Participating in
VAP reduction initiatives involves reviewing current evidence, implementing
best practices, and measuring outcomes.
Why Wrong: A refers to clinical assessment, C focuses on patient education, D
addresses equipment skills.
Q3: According to standard precautions, which of the following is
considered appropriate for all patient contact?
• A) Wearing an N95 mask for all encounters
• B) Wearing a gown and gloves for all encounters
• C) Hand hygiene before and after every patient contact
• D) Wearing eye protection for all encounters
Rationale: Standard precautions require hand hygiene before and after every
patient contact as the most fundamental infection control measure. Additional
PPE (gloves, gowns, masks, eye protection) is used based on anticipated
exposure.
Why Wrong: A, B, D describe transmission-based precautions or specific PPE
used for particular situations, not universal standard precautions.
Q4: An RT student is observing a bronchoscopy procedure. The patient
develops a sudden drop in SpO₂ to 82%. What is the student's priority
action?
• A) Notify the physician immediately
• B) Document the desaturation
• C) Assist with repositioning and ensure supplemental oxygen
availability
• D) Leave the room to get emergency equipment
,Rationale: The student's role is to assist the team while maintaining safety.
Repositioning and ensuring supplemental oxygen is available supports the
procedural team. Notifying the physician is appropriate but the student
should first assist. Documentation is secondary, and leaving the room
abandons patient care.
Why Wrong: A is incomplete, B is not immediate action, D abandons patient
care.
Q5: Which of the following is an example of a ventilator-associated event
(VAE) surveillance strategy?
• A) Daily sedation vacations
• B) Monitoring for sustained increases in FiO₂ or PEEP
• C) Regular oral care with chlorhexidine
• D) Elevating the head of the bed to 30-45 degrees
Rationale: VAE surveillance includes monitoring for sustained increases in
FiO₂ or PEEP as indicators of possible infection. Daily sedation vacations, oral
care, and head-of-bed elevation are prevention strategies, not surveillance
strategies.
Why Wrong: A, C, D are prevention strategies, not surveillance strategies.
Q6: An RT is performing a quality assurance audit of oxygen delivery
device selection. According to AARC Clinical Practice Guidelines, which
oxygen delivery device is indicated for a patient requiring 60% FiO₂?
• A) Nasal cannula at 2 L/min
• B) Non-rebreather mask
• C) Simple mask at 8 L/min
• D) Nasal cannula at 4 L/min
Rationale: A non-rebreather mask with reservoir can deliver FiO₂ of 60-80%
when flows are sufficient to keep the reservoir inflated. Nasal cannula at 2
L/min delivers ~28-30% FiO₂; a simple mask at 8 L/min delivers ~40-60%
, FiO₂; nasal cannula at 4 L/min delivers ~36-38% FiO₂.
Why Wrong: A, C, D do not reliably deliver 60% FiO₂.
Q7: Which of the following is considered an airborne transmission-based
precaution?
• A) Contact precautions for MRSA
• B) Droplet precautions for influenza
• C) N95 respirator for suspected tuberculosis
• D) Standard precautions for all patients
Rationale: Airborne transmission-based precautions require an N95
respirator (or higher-level PPE) and negative pressure room for conditions
like tuberculosis, measles, and varicella. Contact precautions require gown
and gloves; droplet precautions require surgical mask.
Why Wrong: A describes contact precautions, B describes droplet
precautions, D describes standard precautions.
Q8: A respiratory therapist notices that the department's bronchoscope
disinfection log is incomplete. This is best described as:
• A) A minor administrative oversight
• B) A patient safety issue requiring immediate reporting
• C) A routine documentation error
• D) Not relevant to clinical care
Rationale: Incomplete disinfection logs represent a serious patient safety
issue because inadequate bronchoscope disinfection can lead to patient
infections. This must be immediately reported to the department supervisor
or infection control. It is not a minor oversight or routine error.
Why Wrong: A, C, D minimize a serious safety issue.
Q9: Boyle's Law states that: