NSG124 EXAM 2 2026 COMPREHENSIVE
REVIEW AND TESTED CONCEPTS
◉ plastic face mask with a reservoir bag. Answer: -delivering higher
concentrations of oxygen.
-A partial rebreather or nonrebreather mask is a simple mask with a
reservoir bag that should be at least one-third to one-half full on
inspiration
-delivers a flow rate of 10 to 15 L/minute (60-90% oxygen).
-Frequently inspect the reservoir bag to make sure that it is inflated.
-If it is deflated, the patient is breathing large amounts of exhaled
carbon dioxide.
-High-flow oxygen systems should be humidified.
◉ The Venturi mask. Answer: -higher oxygen concentrations of 24%
to 60% and usually requires oxygen flow rates of 4 to 12 L/min,
depending on the flow-control meter selected.
◉ Low flow. Answer: Routine care
Post-op
Recovering pneumonia
Stable or baseline Respiratory status
Standard care mix for RN/PCT patient assignment
,◉ High Flow. Answer: Potentially unstable
Metabolic demands are high and changing, consider Sepsis
Consider experience level of care nurse and available unit supports
May need RRT, Code Blue or ICU transfer
◉ Examples of low flow. Answer: Nasal cannula
Simple face mask
Masks with a reservoir
◉ Nasal canulla. Answer: Flow rate: 1 to 6L on meter
Indication: low to moderate O2 need
◉ nasal canulla advantages. Answer: easily tolerated, no re-
breathing, low cost
◉ nasal canulla disadvantages. Answer: easily displaced, mouth not
covered, risk to skin integrity over tops of ears and nares
◉ Simple oxygen mask. Answer: Flow rate: 5 to 10 L on meter =35 -
55% oxygen concentration
,Indication: obligate mouth breathers or pts with nasal packing
◉ Disadvantage of simple oxygen mask. Answer: claustrophobic
feeling for some patients
◉ High Flow. Answer: venturi mask
non rebreathers
◉ venturi mask. Answer: Delivers oxygen at a rate greater than the
peak inspiratory rate (this is why they are noisy!)
Fixed concentration of oxygen delivered no matter how the patient
is breathing!
Delivers a precise 24 to 50% oxygen concentration
Works on air entrainment principle(intentional creation of tiny air
bubbles in concrete)
Diluter adapters are color coded
Caution: Keep air entrainment ports unobstructed
◉ Non Rebreathers. Answer: -Delivers 60 to 80% with a flow rate of
12-15 Liters
-Indicated for Resp difficulty for short term management
-80 to 99% oxygen concentration
-10 to 15L per minute *
, -One-way valves prevents exhalation into reservoir bag.
-Minimum flow must prevent the bag from deflating on inspiration
◉ Home oxygen therapy Indications. Answer: (PaO2) of 55 mm Hg
or less
(SaO2) of 88% or less on room air at rest, on exertion, or with
exercise
Administered via nasal cannula or face mask
◉ profound hypoxia. Answer: Patients with sudden changes in their
vital signs, level of consciousness, or behavior
◉ The most serious tracheostomy complication. Answer: is airway
obstruction, which can result in cardiac arrest.
◉ who should never receive high levels of oxygen therapy.. Answer:
COPD patients with spontaneous breathing because this may result
in a decreased stimulus to breathe. Do not administer oxygen at
more than 2 L/min unless a health care provider's order is obtained.
◉ Frontal lobe. Answer: personality
emotion
attention
speech
REVIEW AND TESTED CONCEPTS
◉ plastic face mask with a reservoir bag. Answer: -delivering higher
concentrations of oxygen.
-A partial rebreather or nonrebreather mask is a simple mask with a
reservoir bag that should be at least one-third to one-half full on
inspiration
-delivers a flow rate of 10 to 15 L/minute (60-90% oxygen).
-Frequently inspect the reservoir bag to make sure that it is inflated.
-If it is deflated, the patient is breathing large amounts of exhaled
carbon dioxide.
-High-flow oxygen systems should be humidified.
◉ The Venturi mask. Answer: -higher oxygen concentrations of 24%
to 60% and usually requires oxygen flow rates of 4 to 12 L/min,
depending on the flow-control meter selected.
◉ Low flow. Answer: Routine care
Post-op
Recovering pneumonia
Stable or baseline Respiratory status
Standard care mix for RN/PCT patient assignment
,◉ High Flow. Answer: Potentially unstable
Metabolic demands are high and changing, consider Sepsis
Consider experience level of care nurse and available unit supports
May need RRT, Code Blue or ICU transfer
◉ Examples of low flow. Answer: Nasal cannula
Simple face mask
Masks with a reservoir
◉ Nasal canulla. Answer: Flow rate: 1 to 6L on meter
Indication: low to moderate O2 need
◉ nasal canulla advantages. Answer: easily tolerated, no re-
breathing, low cost
◉ nasal canulla disadvantages. Answer: easily displaced, mouth not
covered, risk to skin integrity over tops of ears and nares
◉ Simple oxygen mask. Answer: Flow rate: 5 to 10 L on meter =35 -
55% oxygen concentration
,Indication: obligate mouth breathers or pts with nasal packing
◉ Disadvantage of simple oxygen mask. Answer: claustrophobic
feeling for some patients
◉ High Flow. Answer: venturi mask
non rebreathers
◉ venturi mask. Answer: Delivers oxygen at a rate greater than the
peak inspiratory rate (this is why they are noisy!)
Fixed concentration of oxygen delivered no matter how the patient
is breathing!
Delivers a precise 24 to 50% oxygen concentration
Works on air entrainment principle(intentional creation of tiny air
bubbles in concrete)
Diluter adapters are color coded
Caution: Keep air entrainment ports unobstructed
◉ Non Rebreathers. Answer: -Delivers 60 to 80% with a flow rate of
12-15 Liters
-Indicated for Resp difficulty for short term management
-80 to 99% oxygen concentration
-10 to 15L per minute *
, -One-way valves prevents exhalation into reservoir bag.
-Minimum flow must prevent the bag from deflating on inspiration
◉ Home oxygen therapy Indications. Answer: (PaO2) of 55 mm Hg
or less
(SaO2) of 88% or less on room air at rest, on exertion, or with
exercise
Administered via nasal cannula or face mask
◉ profound hypoxia. Answer: Patients with sudden changes in their
vital signs, level of consciousness, or behavior
◉ The most serious tracheostomy complication. Answer: is airway
obstruction, which can result in cardiac arrest.
◉ who should never receive high levels of oxygen therapy.. Answer:
COPD patients with spontaneous breathing because this may result
in a decreased stimulus to breathe. Do not administer oxygen at
more than 2 L/min unless a health care provider's order is obtained.
◉ Frontal lobe. Answer: personality
emotion
attention
speech
