Cylinders & Safety System
Oxygen Therapy #1
Oxygen Therapy #2
Medical Gas Therapy
Humidity & Aerosol Therapy
100
What is the color code for a cylinder of helium?
Brown
100
What is the minimum flow rate for simple O2 mask? And why?
5 L/min to prevent buildup of exhaled CO2 in the mask
100
Calculate the air/O2 ratio for 40% O2.
3:1
100
What is the name of the medical gas made of C02+02?
Carbogen
100
What is the definition of humidity?
The quantity of moisture in air or gas that is caused by the addition of water in a gaseous state, or vapor.
200
True or False: Oxygen is flammable.
False
200
What are the indications for O2 therapy?
1. Hypoxemia 2. Chronic hypoxia or Dyspnea 3. Increased work of breathing (WOB)
200
How do you ensure that the aerosol mask produces adequate flow rate?
Mist should be visible at all times.
200
An 80:20 mixture of helium and O2 is running through an O2 flow meter at 10 L/min. What is the actual flow rate?
10 x 1.8 = 18 L/min
200
What is the objective of humidity therapy?
To make up for water loss that occurs when dry gas is delivered or when the upper airway is bypassed.
300
A full O2 cylinder contains ________ psig pressure.
2200
300
The flow rate for partial and non-rebreathing mask must be ______.
Sufficient to keep the reservoir bag at least 1/2 full
300
What is the definition of low-flow O2 system?
An O2 delivery device that does not meet the patient's inspiratory flow demands.
300
What are the two indications for Helium/O2 therapy?
1. Airway obstructions (from secretions, tumors, foreign bodies, tracheomalacia) 2. Severe bronchospasm or Asthma
300
By the time the inspired air reaches the carina of a healthy person, it has been warmed to ___ C and is ___ % saturated.
37 C, 100%
400
What are the cylinder factors for "H" and "E" cylinder?
"H" cylinder = 3.14, "E" cylinder = 0.28
400
A 27-year-old woman received from the emergency department is on a nasal cannula at 2 L/min. Approximately what FiO2 is this patient receiving?
28%
400
You are providing an oxygen therapy to your patient via nasal cannula. What is the minimum flow rate that requires a humidification?
4 L/min
400
What are the indications for inhaled nitric oxide?
Persistent pulmonary hypertension of the newborn (PPHN)
400
When the inspired air is fully saturated (100%) at 37 C, it holds ___ mg H2O/L gas and exerts a water vapor pressure of ___ mm Hg.
44 mg H2O/L, 47 mm Hg
500
What is the advantage of the Bourdon gauge?
Unlike Thorpe tube flowmeters, Bourdon gauge is not position dependent.
500
If an air entrainment mask is set on 60% with a flow rate of 10 L/min, what would be the total flow delivered?
20 L/min
500
Why should a 50-mL piece of reservoir tubing be attached to the end of the T-piece?
To prevent air from entering the T-piece during inspiration.
500
What are the 4 indications for hyperbaric O2 therapy?
1. CO poisoning 2. Wound 3. Decompression sickness ("the bends") 4. Air embolism
500
Which humidifier is place in line between the patient's ET tube and the ventilator adapter of the ventilator circuit and produce 70-90% body humidity?
Heat Moisture Exchanger (HME)
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