Respiratory Sys; Oxygen and Pulse Ox Flashcards
is used to humidify the oxygen we get from the tank because oxygen has a drying effect.
humidifier bottle
Normally, we don’t need to humidify the
oxygen we get from the atmosphere due to the
presence of
mucus
→ These devices deliver oxygen directly into the patient’s airway at flow rates of 8L/min or less.
LOW FLOW DEVICES (LFD)
LFD TYPE:
→ Convenient because it allows the patient to move about in bed, talk, cough, and eat without interrupting oxygen flow.
→ The oxygen flow rate for this device ranges from ____
NASAL CANNULA
1 to 6 L/min.
LFD NASAL CANNULA
→ Because the patient also breathes room air, the O2 concentration ultimately delivered to the alveoli ranges from ___ TO ___
24% to 44%.
LFD NASAL CANNULA
Oxygen is administered at flow rates of __L/min or less doesn’t need to be humidified.
→ Oxygen is administered at flow rates above __L/min should be humidified to prevent discomfort because oxygen has a ___
4
drying effect.
LFD TYPE:
→ Its mask mixes oxygen with room air.
→ The mask itself acts as a reservoir, it can deliver an FiO2 of 40% to 50%, using oxygen flow rates from
SIMPLE FACE MASK
5 to 10L/min.
LFD SIMPLE FACE MASK
→ A minimum flow rate of ___L/min is needed to ______ out of the mask, so that the patient doesn’t rebreathe it.
5
flush the expired CO2
LFD SIMPLE FACE MASK
▪ DO NOT USE if the oxygen being given is less than __, because if less than __, it is possible for the ___
5
CO2 to accumulate in the lungs
LFD TYPE:
→ This is ideal for emergency situations when the patient needs a high inspired-oxygen concentration (60% to 95%) for a short time.
→ The oxygen is administered at a flow rate of up to _____ in an emergency
NON-REBREATHER MASK
12 to 15L/min
LFD NON-REBREATHER MASK
The reservoir bag should be at least ___ full on inspiration.
1/3 to ½
LFD NON-REBREATHER MASK
one-way valve located between the ____ allows gas from the reservoir bag to ___ on ___ but prevents gas in the mask from _____ into the reservoir bag during ____.
▪ Ensure that a sufficient oxygen flow rates is used so the_____
reservoir bag and the base of the mask
enter the mask - inhalation
flowing back - exhalation
oxygen reservoir bag does not collapse during inspiration.
It is intended OXYGEN for moderate to severe respiratory distress.
▪ Monitor for any potential suffocation
LFD NON-REBREATHER MASK
LFD NON-REBREATHER MASK
→ Do not allow the reservoir bag to deflate because the patient is likely to
breathe in large amounts of exhaled CO2.
The oxygen flows out of the device and into the patient’s airway in an amount sufficient to meet all inspiratory volume requirements.
HIGH FLOW DEVICES (HFD)
HDF TYPE:
→ It uses a mixture of oxygen, entrained room air, and water to achieve the desired humidified oxygen concentration.
→ This is also used to administer medication
AEROSOL MASK
HDF TYPE:
→ This specialized mask enables delivery of precise oxygen concentrations.
→ Good for patients with Chronic Hypercarbia (CO2 retention) and moderate to severe Hypoxemia (COPD).
→ Humidification isn’t needed because the mask entrains a much greater flow of room air.
→ The mixture of gas delivered to the patient approaches room air humidity.
VENTURI MASK
is an estimation of the oxygen saturation level.
→ refers to the concentration of oxygen in the blood.
It measures the percentage of hemoglobin binding sites in the bloodstream occupied by oxygen
Peripheral Capillary Oxygen Saturation (SpO2)
is a state in which oxygen is not available in sufficient amounts at the tissue level to maintain adequate homeostasis;
Hypoxia
SpO2 of 90% to 94% = ______ hypoxia
→ Provide supplemental oxygen via ___ or ____
mild to moderate
nasal cannula
or simple face mask.
SpO2 of 85% to 89% = ____ hypoxia
→ Provide supplemental oxygen via ____
moderate to severe
face mask with a reservoir.
SpO2 below 85% = ___ hypoxemia
→ ___ and ___
severe to life-threatening
Endotracheal Intubation and Mechanical Ventilation
