ESTUDYR
NURS 1201 OXYGEN ADMINISTRATION EXAM QUESTIONS
WITH VERIFIED SOLUTIONS 100% CORRECT
What is the normal resting pulse oximetry (SpO₂) range for most healthy adults?
A. 88%–92%
B. 90%–94%
C. 95% and above
D. 100%–105%
Rationale: Pulse ox values ≥95% are generally considered normal in healthy adults; lower values require
clinical context and assessment.
A nasal cannula delivers oxygen at what typical flow range?
A. 0.1–0.5 L/min
B. 1–6 L/min
C. 6–12 L/min
D. 10–15 L/min
Rationale: Standard nasal cannula flows are 1–6 L/min, providing roughly 24–44% FiO₂ depending on
flow and patient factors.
When a nasal cannula is ordered at 4 L/min or above, what is routinely required?
A. Immediately switch to a face mask
B. Humidification to prevent drying of mucous membranes
C. Decrease flow to 2 L/min to avoid humidification
D. No change; humidification is never needed
Rationale: Flows ≥4 L/min commonly require humidification to reduce mucosal dryness and discomfort.
Can humidification be applied at flows under 4 L/min for patient comfort?
A. No — it is contraindicated under 4 L/min
B. Yes — humidification may be used if the patient is uncomfortable or has thick secretions
C. Only if the patient has COPD
D. Only with a Venturi mask
Rationale: While usually recommended at ≥4 L/min, humidification may be used at lower flows if
clinically indicated for comfort or secretion management.
Which is the safest sequence when initiating oxygen therapy with any delivery device?
A. Apply device to patient first, then turn oxygen on at the wall
B. Set and verify oxygen flow on the device/flowmeter before applying to the patient
C. Start oxygen after leaving the room
D. Turn on oxygen at maximum and then reduce after application
Rationale: Verify flow and equipment function before placing on patient to prevent delivery errors and
ensure correct FiO₂.
, ESTUDYR
A simple face mask typically delivers oxygen at which flow and approximate FiO₂?
A. 0.5–1 L/min; 21%
B. 6–10 L/min; ~40%–60%
C. 10–15 L/min; 90%–95%
D. 1–4 L/min; 24%–35%
Rationale: Simple face masks require flows of 6–10 L/min to prevent rebreathing and provide about 40–
60% oxygen.
Does the standard simple face mask require a humidifier bottle?
A. Yes — always
B. No — simple masks typically do not use a humidifier bottle at the bedside
C. Only if flow <6 L/min
D. Only for neonates
Rationale: Simple masks generally deliver enough flow and entrained room air; humidifiers are typically
used with higher-flow nasal cannula or specific devices.
Which oxygen device provides the most precise FiO₂ and is available in 24%–50% settings?
A. Nasal cannula
B. Simple face mask
C. Venturi mask (air-entrainment mask)
D. Non-rebreather mask
Rationale: Venturi masks use color-coded adapters to entrain a fixed concentration of air/oxygen,
making them ideal for precise FiO₂ (useful in COPD).
Typical Venturi mask FiO₂ and flow ranges are:
A. 10%–20%, 0.5–1 L/min
B. 50%–100%, 10–15 L/min
C. 24%–50% FiO₂; ~4–10 L/min (adapter dependent)
D. 80%–95%, 20–30 L/min
Rationale: Venturi adapters specify a precise FiO₂ (e.g., 24%, 28%, 31%, 35%, 40%, 50%) and require
adequate flow (commonly 4–10 L/min) for correct function.
What is the correct basic setup sequence for a Venturi mask?
A. Plug in power, turn on oxygen after applying mask
B. Select appropriate adapter for ordered FiO₂ → attach adapter to mask tubing → secure safety
pieces → connect to flowmeter and verify flow → apply to patient
C. Apply mask, then choose adapter at random
D. Use Venturi only with humidification bottle attached
Rationale: Proper adapter selection and connection before patient application ensures accurate FiO₂
delivery.
Which oxygen device provides the highest potential oxygen concentration (up to ~90–95%) when set
correctly?
NURS 1201 OXYGEN ADMINISTRATION EXAM QUESTIONS
WITH VERIFIED SOLUTIONS 100% CORRECT
What is the normal resting pulse oximetry (SpO₂) range for most healthy adults?
A. 88%–92%
B. 90%–94%
C. 95% and above
D. 100%–105%
Rationale: Pulse ox values ≥95% are generally considered normal in healthy adults; lower values require
clinical context and assessment.
A nasal cannula delivers oxygen at what typical flow range?
A. 0.1–0.5 L/min
B. 1–6 L/min
C. 6–12 L/min
D. 10–15 L/min
Rationale: Standard nasal cannula flows are 1–6 L/min, providing roughly 24–44% FiO₂ depending on
flow and patient factors.
When a nasal cannula is ordered at 4 L/min or above, what is routinely required?
A. Immediately switch to a face mask
B. Humidification to prevent drying of mucous membranes
C. Decrease flow to 2 L/min to avoid humidification
D. No change; humidification is never needed
Rationale: Flows ≥4 L/min commonly require humidification to reduce mucosal dryness and discomfort.
Can humidification be applied at flows under 4 L/min for patient comfort?
A. No — it is contraindicated under 4 L/min
B. Yes — humidification may be used if the patient is uncomfortable or has thick secretions
C. Only if the patient has COPD
D. Only with a Venturi mask
Rationale: While usually recommended at ≥4 L/min, humidification may be used at lower flows if
clinically indicated for comfort or secretion management.
Which is the safest sequence when initiating oxygen therapy with any delivery device?
A. Apply device to patient first, then turn oxygen on at the wall
B. Set and verify oxygen flow on the device/flowmeter before applying to the patient
C. Start oxygen after leaving the room
D. Turn on oxygen at maximum and then reduce after application
Rationale: Verify flow and equipment function before placing on patient to prevent delivery errors and
ensure correct FiO₂.
, ESTUDYR
A simple face mask typically delivers oxygen at which flow and approximate FiO₂?
A. 0.5–1 L/min; 21%
B. 6–10 L/min; ~40%–60%
C. 10–15 L/min; 90%–95%
D. 1–4 L/min; 24%–35%
Rationale: Simple face masks require flows of 6–10 L/min to prevent rebreathing and provide about 40–
60% oxygen.
Does the standard simple face mask require a humidifier bottle?
A. Yes — always
B. No — simple masks typically do not use a humidifier bottle at the bedside
C. Only if flow <6 L/min
D. Only for neonates
Rationale: Simple masks generally deliver enough flow and entrained room air; humidifiers are typically
used with higher-flow nasal cannula or specific devices.
Which oxygen device provides the most precise FiO₂ and is available in 24%–50% settings?
A. Nasal cannula
B. Simple face mask
C. Venturi mask (air-entrainment mask)
D. Non-rebreather mask
Rationale: Venturi masks use color-coded adapters to entrain a fixed concentration of air/oxygen,
making them ideal for precise FiO₂ (useful in COPD).
Typical Venturi mask FiO₂ and flow ranges are:
A. 10%–20%, 0.5–1 L/min
B. 50%–100%, 10–15 L/min
C. 24%–50% FiO₂; ~4–10 L/min (adapter dependent)
D. 80%–95%, 20–30 L/min
Rationale: Venturi adapters specify a precise FiO₂ (e.g., 24%, 28%, 31%, 35%, 40%, 50%) and require
adequate flow (commonly 4–10 L/min) for correct function.
What is the correct basic setup sequence for a Venturi mask?
A. Plug in power, turn on oxygen after applying mask
B. Select appropriate adapter for ordered FiO₂ → attach adapter to mask tubing → secure safety
pieces → connect to flowmeter and verify flow → apply to patient
C. Apply mask, then choose adapter at random
D. Use Venturi only with humidification bottle attached
Rationale: Proper adapter selection and connection before patient application ensures accurate FiO₂
delivery.
Which oxygen device provides the highest potential oxygen concentration (up to ~90–95%) when set
correctly?
