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59 Cards in this Set
- Front
- Back
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transtracheal catheter
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up to 3L , low O2 flows, conserves O2, easy to hide
Disadvantages: infection, subq emphysema, place cannula if it malfunctions, |
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What would work best for backup in a large hospital relying on stand tanks
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liquid storage
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Whose law says that fast moving air exerts less pressure on the vessel walls
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Bernoulli
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What is the best flow meter to use for transport
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Bourdon gauge - not affected by gravity
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What's the name given to the device that reduces pressure
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regulator
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why do hospitals have zone valves
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fire
maintenance |
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give me a list of therapeutic gases used in respiratory care
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O2
heliox medical air nitric oxide CO2 & O2 |
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What gases support combustion?
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O2
medical air heliox nitrous oxide Carbon dioxide |
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What gas is actually flammable?
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carbon monoxide
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Green & brown cylinder
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heliox
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What's the color of a helium tank?
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brown
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first step involved in determining amount of liquid gas in a cylinder?
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weigh the cylinder
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How much does one liter of liquid O2 weigh?
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2.5lbs or 40oz
produces 860 liters of gaseous O2 |
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H tank factor
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3.14
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E tank factor
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0.28
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Safe PSI level
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500
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What is the working pressure of medical gas?
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50psi
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standard full tank pressure?
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2200psi
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What is the most common, cheapest way to produce O2?
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Fractional distillation
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most common size O2 tanks?
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H & E
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How often must air cylinders be inspected?
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every 5 to 10 years
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What's the main attribute that makes helium a therapeutic gas?
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low density creates laminar flow
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There is a device with a pressure gauge and flow gauge built together - what is it?
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Bourdon gauge
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what is the most appropriate O2 device for a CO2 retainer?
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air entrainment - dial in FIO2
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How would I deliver a precise O2 FIO2 to a newborn infant?
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A hood
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If a CO2 retainer was placed on too high a flow and became lethargic, what would you recommend to fix this?
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lower FIO2 or lower flow and watch the patient
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name the high flow devices
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aerosol, venturi, face tent, trach mask, trach tee for transport, high flow nasal cannula, O2 hood
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name the low flow devices
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nasal cannula
pendent cath, simple mask, non-rebreather |
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name hazards of O2 delivery at too high FIO2 for too long
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absorption atelectasis
O2 toxicity hypoventilation |
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what two test would you run for a fire victim?
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ABG
co-oximeter |
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home care patient wants to go to the store - what should they take for the trip?
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E tank
liquid O2 |
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what tool is used to measure O2 content the blood non-invasively?
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pulse oximeter
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what info do you include during charting?
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FIO2
SPO2 vitals, dates and times of changes |
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what does the MD order have to include for the delivery of O2?
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Flow
FIO2 |
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when is it okay to turn the O2 off?
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PaO2 = 5x FIO2
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what are things that might give inactive readings on a pulse ox?
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Carbon Monoxide poisoning
poor perfusion fingernail polish |
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CO2 retainer - setting O2 concentration at 50%? okay?
1 liter nasal cannula? |
No
Yes - 28% is safe for a CO2 retainer |
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easier to achieve total flow with a high FIO2 or low FIO2?
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Low FIO2
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what types of things would you look for when monitoring a patient for O2 therapy?
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Vitals
SPO2 Color WOB LOC |
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what might you see as a result of successful O2 therapy?
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better vitals, decreased WOB, myocardial work reduced, mental status better, skin color better
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what are the signs that indicate O2 therapy is needed?
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PaO2 < 80
SPO2 < 90 myocardial infarction physical trauma obstructive sleep apnea post anesthesia |
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what's a good devices to deliver a low O2 concentration for someone who is breathing hard and fast?
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air entrainment mask - meets total flow
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What's the best way to deliver O2 to an alert, awake, active pediatric patient?
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O2 tent
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Desired FIO2 formula
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Desired FIO2 = {PaO2(desired) x FIO2 (current)} / {PaO2 (current)}
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Formula for air O2 ratio
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Liters of Air entrained/liters of oxygen = 100-FIO2/FIO2-20 (21 if <40%)
Divide this calculation for Air Flow ratio O2 part of ratio is always 1 Add the Air+Oxygen ratio parts Multiply the sum of the ratio parts by the oxygen flow (L/min. on flow meter) You will now have the total flow the patient is receiving in the mask |
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liquid O2 formula
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1. weigh the reservoir (you must know the empty weight of reservoir)
2. Subtract empty weight from its current weight = weight of the liquid O2 in the reservoir 3. Multiply the liquid O2 weight (lb) by 860 (L of gas per lb) 4. Divide that product by 2.5 lbs/L to get the amount of gas (liters) in the cylinder 5. Divide the liters of gas in the cylinder by the flow rate (L/min) to get the minutes the cylinder will last 6. Convert the minutes to hours and minutes |
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what are the safety devices put in place to keep a cylinder from exploding if exposed to heat?
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pressure relief valve
frangible disk fusible plug |
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why do we crack the cylinder?
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to clean debris from the valves
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Bourdon gauge when tube is pinched
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false reading
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pinch of uncompensated thorpe tube
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ball will sink
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index system for e tanks
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piss
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international color code for compressed air
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black and white
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international color code for carbon dioxide
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gray
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international color code for nitrogen
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black
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1 liter of low = N% FIO2?
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4%
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main concerns about hyperbaric therapy
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pneumothorax
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side effects of heliox
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high pitched voice
ineffective cough |
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what are the most important characteristics of O2?
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supports combustion
colorless, odorless 1.479 denser than air poorly dissolved in water |
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The most common therapeutic gases
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O2
medical air heliox nitric oxide |
