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13 Cards in this Set
- Front
- Back
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In relationship to distance from the pt, where is the oxygen in the manifold?
Proximal or distal & why? |
The oxygen is proximal to the pt (and most distal from the pipeline) because, if we make changes we want the changes to be made to the oxygen first.
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Name three types of vaporizers?
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Copper Kettle
Conventional Vaporizors Electronic |
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What are the most common problems associated with copper kettles?
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Not temperature regulated;
Increase room/environmental temperature can cause increase outflow of agent; “Pumping effect” backpressure from CMV into vaporizer; Gas becomes saturated and when it reaches the patient it can be at higher a concentration. Few safety precautions. |
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Conventional vaporizers deliver consistent concentration of agent regardless of temperature or gas flow except in what instances?
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In cases of extreme flow rates (<250ml/m or >15L/m)
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What is the purpose of Wick’s metal?
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It is the temperature compensating valve. It moves to the left if the enviromental temp. is cold to allow more vapor in and moves it to the right if the temp is too high allowing more oxygen to go to bypass thus preventing too much to go to the vaporizer & pick up more vapor than is needed.
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Vaporizers are agent specific.
True or false |
True
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What happens if you put enflurane in halothane's vaporizer?
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Because they are calibrated to different vapor pressures -
enflurane has a VP 175 (lower), halothane has a VP of 243 (higher),you would get a lower concentration than desired. If you put Halothane into an enflurane vaporizer it would result in an OD. |
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During transportation,
how is spilling of agents prevented in newer vaporizers |
New vaporizers have a transport lock that will ensure that agent won’t spill inside the vaporizer.
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How do you clean a vaporizer after a spill?
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Put the system on high flow for about 15mins to washout the contamination.
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Desflurane is the newest volatile agent, how is it different from older agents?
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It is a “clean” gas, not very soluable, high vapor pressure – must keep in a liquid state).
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What mode must the vaporizer in before it can be taken off the AGM?
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In the transport mode.
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What is vapor pressure?
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The amount of pressure it takes to make liquid into a gas
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What is the outcome of these combinations:
High VP gas & Low VP vaporizer; Low VP gas & High VP vaporizer? |
High VP gas & Low VP vaporizer => High (toxic)
Low VP gas & High VP vaporizer=> (nontoxic) |
