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PALS 2024 Low flow O2 systems. Exam Questions With Verified Answers.
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©BRAINBARTER 2024/2025 PALS 2024 Low flow O2 systems. Exam Questions With Verified Answers. A low flow delivery system does what? - answerDelivers air through a nasal cannula or a simple mask that does not fit tightly against the childs face. Low flow systems provide how much inspired O2 conc...

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  • October 2, 2024
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  • 2024/2025
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©BRAINBARTER 2024/2025




PALS 2024 Low flow O2 systems. Exam
Questions With Verified Answers.


A low flow delivery system does what? - answer✔Delivers air through a nasal cannula or a
simple mask that does not fit tightly against the childs face.
Low flow systems provide how much inspired O2 concentration?


Who uses them? - answer✔22- 60%


Used for stable children who require a low inspired O2 concentration, such a when a child is not
in severe respiratory distress or shock

Examples of low flow systems? - answer✔Nasal cannula and simple mask

O2 flow rate for nasal cannula - answer✔0.25 to 4 L/min

Simple mask flow rate? - answer✔6-10 L/min Inspired O2 concentration of 35- 60%
Why cant the simple mask deliver inspired O2 concentration greater than 60%? -
answer✔Because room air enters between the mask and face during inspiration
high flow O2 delivery systems do what? Flow rate?


When should they be used?


Most common example of High flow O2 system? - answer✔Deliver O2 concentration 60% or
greater (95%) . Flow rate is 10L.


Used in emergency situations whenever the child has respiratory distress or shock

, ©BRAINBARTER 2024/2025


Nonrebreathing mask

Nonrebreathing mask valves do what? - answer✔A valve in 1 or both exhalation ports to prevent
room air from entering during inspiration


Valve between reservoir bag and mask to prevent flow of exhaled gas into reservoir

How do you prevent bag collapse in nonrebreather? - answer✔Adjust O2 flow rate into mask.
Greater than 10L

During inspiration how much O2 is drawn by the child with a nonrebreather? - answer✔100%
from the reservoir bag and O2 inflow

High Flow nasal cannula - answer✔O2 can be adjusted from 4 L in infants up to 40 L or more in
adolescents. Deliver a combo of room air and oxygen.

Gas flow for nebulizer? How long? - answer✔5-6L/min


8-10 min

Does skin pigment affect accuracy or function of the pulse oximeter? - answer✔False

What must you confirm with a pulse ox? - answer✔Confirm validity of oximeter data by
evaluating Childs appearance. Also compare HR displayed by pulse ox with HR displayed by the
bedside monitor

respiratory arrest - answer✔The absence of respirations (apnea) with detectable cardiac activity.
Must provide rescue breathing to prevent cardiac arrest

When should endotracheal intubation be considered? - answer✔If the child is unstable to
maintain effective airway, oxygenation, or ventilation despite initial intervention.

DOPE - answer✔Displacement
Obstruction
Pneumothorax
Equipment failure


Could cause deterioration of the pt

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