Exam (elaborations)
CFRN New /609 Questions And Answers Download To Pass!!!
- Course
- Institution
CFRN New /609 Questions And Answers Download To Pass!!!
[Show more]
Seller
Follow
HELLENAH
Reviews received
Content preview
CFRN New 2023 -2024 /609 Questions And AnswersDownload To Pass!!!
Quiz :What is atmospheric pressure at sea level? - Answer :760mmHg (or 760
torr)
Quiz :T/F: Atmospheric pressure and barometric pressure are essentially the
same thing, just using a different unit of measure. - Answer :True (think
measuring same item in inches and then measuring it in cm)
Quiz :How many atmospheres (or ATMs) are at sea level? - Answer :1
atmosphere/ATM at sea level
Quiz :What is barometric pressure? - Answer :The combined weight of all
atmospheric gases creating a force upon the surface of the earth.
Quiz :What is barometric pressure at sea level? - Answer :29.92Hg
Quiz :According to Boyle's law, as altitude increases, barometric pressure
____, and gas in an enclosed space ____ as long as temperature remains ____.
- Answer :decreases, expands, constant
Quiz :T/F: As altitude increases, the measurement of Atmospheres (ATMs) also
increases. - Answer :False - decreases
Quiz :Quick math for calculating drop in ATMs until appx 5000/6000 feet
altitude is that for every ____ increase in altitude, ATM goes down 5%. -
Answer :1500 feet
Quiz :What do the values of P1V1=P2V2 for Boyles law mean? - Answer :P1 =
starting ATM at the lowest altitude
V1 = starting volume (ETT cuff, epigastrum, etc.)
P2 = highest ATM based on highest altitude
V2 = ending volume as impacted by highest altitude
*constant temperature*
Quiz :Due to Boyle's law, what type of physiologic process/pain may you
experience on descent? - Answer :barotitus media - can't equalize ears (for
test: only clinical issue that occurs on descent, sinusitis ascent)
,Quiz :In barobariatrauma, according to boyles law, as altitude increases and
atmospheric pressure drops - the drop causes ____ to be displaced off of
phospholipids and ____ narcosis can occur. - Answer :nitrogen, nitrogen
Quiz :T/F: Barobariatrauma acts like a decompression sickness, such as a scuba
diver who rapidly ascends. - Answer :True (would also be seen on ascent
phase of flight)
Quiz :Barobariatrauma is more common in what type of population of
patients? - Answer :morbidly obese
Quiz :How is nitrogen narcosis from barobariatrauma treated? - Answer :High
flow O2 (preferably appx 15 minutes before flight if concerned this may
present - morbidly obese, significant altitude changes)
Quiz :Barodentalgia (think boyles law) occurs in which phase of flight? -
Answer :ascent
Quiz :According to Charles's law, if pressure is constant, what is the
relationship of volume and temperature? - Answer :directly proportional
(temp up = volume up, temp down = volume down) (*think car tires*)
Quiz :For every 1000' increase in altitude, how much will the temperature
decrease? - Answer :2 degrees celsius (if in meters - 150 meters ascent = 1
degree celsius temp decrease)
Quiz :Which gas law states the following: At a given mass and constant volume
of gas, the pressure exerted on the sides of its container is directly
proportional to its absolutely temperature. - Answer :Gay-Lusaac's law
Quiz :How many gases make up atmospheric air? - Answer :5 (nitrogen being
the most, oxygen second)
Quiz :What gas law states the sum of the partial pressure in a mixture of gases
will equal the total pressure? - Answer :Dalton's law
Quiz :A mix of Dalton's and Boyle's law concepts would conclude that as
altitude ______, atmospheric pressure decreases. Even though the pressure
changes, the gas stays at the ____ proportions. Therefore, if increasing
,altitude, the partial pressure of oxygen (amount available in atmosphere) will
___. - Answer :increases, same, decrease
Quiz :How do you calculate a partial pressure of oxygen? - Answer :Oxygen in
mmHg x oxygen concentration
Ex: 760mmHg (sea level) x 0.21 (normal O2 % in air) = 159.6mmHg (partial
pressure aka available amount of oxygen in atmosphere)
Quiz :Normal paO2 on ABG? - Answer :80-100 (partial pressure of oxygen or
amount of oxygen measured/available in arterial blood)
Quiz :What gas law states that the amount of gas dissolved in a solution is
directly proportional to the pressure of the gas on the surface of the solution? -
Answer :Henry's law
(think if you turn up FiO2 and there is more partial pressure of oxygen, more
will be dissolved Into the solution - or think pop can, CO2 under pressure in can
escapes proportionately when can is opened and pressure released)
Quiz :When the alveoli are perfused with blood as normal, but
ventilation/oxygenation fails to supply the perfused region - Answer :Shunting
(may often be caused by some sort of blockage - PE, infectious process/fluid)
Quiz :One potential way to optimize gas exchange is to increase surface area
of alveoli by adding ____. - Answer :PEEP
Quiz :What is Graham's gas law? - Answer :Gases diffuse from a region of
higher concentration (pressure) to lower concentration (pressure) until
equilibrium is reached.
Quiz :A patient is at sea level (760 mmHg) and is on 30% O2 (FiO2 of 0.3).
What is their partial pressure of oxygen at this altitude? - Answer :228 (760 x
0.3)
Quiz :Flicker Vertigo is primarily caused by what? - Answer :Sunlight passing
through the rotors (lower spinning 5-20Hz - can cause vertigo and seizure
activity)
Quiz :For every decrease below sea level (going below water) of ___ feet is
equal to additional ATM - Answer :33
(ex: 99 feet below water is 4 ATMs - using 1 ATM as your "zero")
, Quiz :Quick way to estimate patients PaO2 using FiO2? - Answer :FiO2 x 5
Quiz :Bedside calculation to estimate PaO2? - Answer :(700 torr x FiO2) - 50
ex: (700 x .5) - 50. (*700 = estimated atmospheric pressure, .5 for FiO2 of 50%)
Quiz :You compare your bedside calculation estimate of PaO2 to an actual
ABG and notice a large disparity, what physiological process is likely occuring? -
Answer :Shunt physiology (alveoli are perfused with blood as normal, but
ventilation/oxygenation fails to supply the perfused region)
Quiz :What does the DEATH acronym stand for in regards to stressors of
flight? - Answer :Drugs, Exhaustion, Alcohol, Tobacco, Hypoglycemia
Quiz :A period of time from the onset of a decompression until a person is
unable to effectively or adequately perform duties due to an insufficient supply
of oxygen. - Answer :Time of useful consciousness
Quiz :T/F: In an explosive decompression above 40,000 feet time of useful
consciousness will be less than 10 seconds. - Answer :True (*test tip pick
shortest amount of time answer*)
Quiz :T/F: The altimeter setting is your barometric pressure. - Answer :True
Quiz :Desired FiO2 based on altitude formula? - Answer :(FiO2 x P1) / P2
*P1 is current barometric pressure
*P2 is barometric pressure at highest flight altitude
(to maintain same level of oxygen therapy at a higher altitude)
Quiz :PaO2 will decrease by ____________ mmHg for every _____________
feet increase in altitude. - Answer :5/1000
Quiz :If the atmospheric pressure at 18,000 ft. MSL is 380 torr, what would the
partial pressure of oxygen at that altitude? - Answer :79 torr (380 x 0.21)
Quiz :A patient suffering from decompression sickness is an example of which
gas law? - Answer :Henry's
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller HELLENAH. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
79223 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now
Recently viewed by you
