Term
| Who decides what is needed for an anesthesia workstation? |
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Definition
| the American Society for Testing and Materials (ASTM) |
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Term
| What are "high priority" alarms? |
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Definition
| usually the disconnect alarms. They may not be silenced for more than 2 minutes |
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Term
| T/F. The electrical supply cord for the anesthesia machine must be non-detachable or resistant to detachment |
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Definition
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Term
| T/F. The machine does not need an oxygen cylinder (E cylinder) attached |
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Definition
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Term
| what is the diameter index safety system (DISS)? |
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Definition
| color coded tubing that connects to anesthesia machine that prevents incorrect hose attachment |
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Term
| T/F. The oxygen flow is uniquely shaped to easily differentiate b/w O2, N2O, and air |
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Definition
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Term
| T/F. O2 must enter the common manifold DOWNSTREAM of other gases. |
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Definition
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Term
| What is the pressure that oxygen enters the machine when it comes from the pipeline (wall supply)? |
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Definition
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Term
| What prevents misconnection of a cyclinder to the wrong yoke? |
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Definition
| The pin index safety system (PISS) on the hanger yoke assembly |
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Term
| What is the pressure from the oxygen cylinder (e-cylinder) on the back of the machine? Why is this important? |
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Definition
| 40-50 PSI. If you accidently leave the cylinder open you should still draw O2 from the pipeline because it has a greater pressure |
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Term
| What are the pin positions for Nitrous, oxygen, and air? |
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Definition
oxygen- 2&5
nitrous- 3&5
air- 1&5 |
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Term
| What is the quick way to convert psi of O2 tank to Liters? |
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Definition
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Term
T/F. a nitrous cylinder will read 750 psi until 25% of it is gone.
Explain this/ |
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Definition
FALSE. it reads 750 psi until 75% is gone.
Nitrous is a liquid at room temp |
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Term
| how much nitrous is left in a nitrous cylinder that is reading 500 psi? |
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Definition
| cant tell exactly how much without weighing it. All you know is that there is less than 25% remaining |
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Term
| T/F. the volume of N20 cylinder CANNOT be determined based on psi. |
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Definition
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Term
| what is the critical temp of oxygen and N2O? what does this mean? |
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Definition
O2: -119 C
N2O: 39.5 C
Critical temp is the temperature, above which, a gas CANNOT be liquified NO MATTER how much pressure is applied. That explains why N2O exists as a liquid at room temp and O2 exists as a gas at room temp |
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Term
| how much O2 does the O2 flush valve output? |
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Definition
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Term
| The pressure sensor shut-off valve remains open as long as psi remains > ____ psi. |
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Definition
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Term
| what does the second stage pressure regulator do? |
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Definition
| It takes the O2 from the pipeline coming in at 45-55 psi and drops it down to a more usable pressure of 16 psi |
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Term
| T/F. If ONLY oxygen is running, no matter what the flow is you are running 100% fiO2 |
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Definition
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Term
| Why is O2 always to the right (closest to the patient) or "downstream" of all other gases? |
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Definition
| to prevent hypoxic mixture being delivered to patient. If flowmeters are leaking, the other gases will vent out before O2 does |
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Term
| What is the interlink mechanism? |
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Definition
| A safety mechanism that links the O2 and N2O knobs so that you cannot deliver hypoxic mixture to patient when running them together. If you increase N2O it will AUTOMATICALLY increase your O2 with it. You can still decrease N2O without dec. O2 and you can still increase O2 without increasing N2O |
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Term
| T/F. Vaporizers are agent specific and cannot be interchanged. |
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Definition
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Term
| What is the vaporizer interlock mechanism |
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Definition
| only allows one vaporizer to be turned on at a time |
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Term
| if you somehow put agent in wrong vaporizer what can happen? What should you do? |
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Definition
> If you put a higher VP agent in lower VP chambe you will get a higher concentration delivered.
> if you put a lower VP agent in a higher VP chamber you will get a lower concentration delivered
You must empty, flush with 100% O2 and dry |
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Term
| What is the name of the vaporizer made special for desflurane? |
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Definition
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Term
| How do you eliminate CO2 with Mapleson systems? |
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Definition
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Term
| DO NOT hand ventilate someone to a pressure above ___________ |
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Definition
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Term
| Know chart on slide 60 of anesthesia machine lecture*** |
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Definition
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Term
| Why is Amsorb supposedly better than soda lime or Baralyme? |
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Definition
| It does not form compound A with sevoflurane or carbon monoxide |
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Term
| What are the final products of CO2 neutralization from the absorbant? |
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Definition
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Term
| What factors increase likelihood of Compound A formation? |
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Definition
| total gas flow < 1-2 L/min, use of baralyme rather than soda lime, higher absorbant temp (temp higher with more CO2 being exhaled), high conc of sevo, drying of CO2 absorbant (fresh soda lime, machine on all night*), long anesthetic |
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Term
| What gases are implicated in producing carbon monoxide? Which one the most? |
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Definition
| Desflurane, enflurane, and isoflurane (in that order) |
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Term
| What is the inspiratory phase time? |
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Definition
| the period of time between the start of inspiratory flow and the beginning of expiratory flow (it is the sum of inspiratory flow time and inspiratory pause time) |
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Term
| What are the differences b/w ascending (standing) bellows and descending (hanging) bellows. |
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Definition
Ascending (standing) are the MOST COMMON and they rise during expiration and fall during inspiration-- they will not do this if pt disconnected from vent
descending (hanging) bellows fill on inspiration and compress on expiration. Not as safe because they will continue to do this even if pt disconnected from vent |
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