Study your flashcards anywhere!

Download the official Cram app for free >

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

How to study your flashcards.

Right/Left arrow keys: Navigate between flashcards.right arrow keyleft arrow key

Up/Down arrow keys: Flip the card between the front and back.down keyup key

H key: Show hint (3rd side).h key

A key: Read text to speech.a key

image

Play button

image

Play button

image

Progress

1/84

Click to flip

84 Cards in this Set

  • Front
  • Back
Heat energy given to an object its temp will ___
rise
Heat Capacity
is the amount of heat that will raise a temp of an object by 1 Kelvin
____ is required for a subst to change from solid to liquid and liquid to vapor
Heat
Latent heat of vaporization: is the heat required to change
a unit mass of liquid to a gas at a given temp
Latent heat of vaporization is heat required to convert __kg of a liquid to a vapor as a given temp
1 kg
The Lower the temp the more ___ needed to vaporize
heat
At the critical temp: Latent heat = 0 liquid will spontaneous ->
Gas
The vaporization of Ethyl chlorideor alcohol causes ___of the skin
cooling
Removal of O2 too fast will dec vapor press and make liquid _____.
cooler
At equilibrium the part press exerted by the vapor is
saturated vapor pressure
Inc heat of liquid will ___vapor
inc vapor
Vapor pressure of volatite Anesthetics Halothane
=244 244/760= 32% of ATM
Vapor pressure of volatite Anesthetics: Forane
= 240 240/760= 33% of ATM
Vapor pressure of volatite Anesthetics Ethrane
= 175 175/760= 23% of ATM
Vapor pressure of volatite Anesthetics Sevoflurane
= 160 160/760= 21% of ATM
Vapor Pressure of Volatile Anesthetics Desflurane
= 669 669/760= 88% of ATM
Vaporizer will step the % amount administer ____.
down
% typically administer to patient: Halothane
1%
% typically administer to patient: Forane
3%
% typically administer to patient: Ethrane
3%
% typically administer to patient: Sevoflurane
3%
% typically administer to patient: Desflurane
7%
Amount of volatile agent per amount of liquid agent:
Avogadro's hypotheis:
1 grm molecular wt of gas (or vapor) occupies 22.4L
1 grm molecular wt of halothane will____ occupy
22.4L
Vapor per ml agent:
1ml agent / ml vapor @ 20C
Halothane
1ml agent / ml vapor @ 20C
226
Vapor per ml agent
1ml agent / ml vapor @ 20C
Enflurane
1ml agent / ml vapor @ 20C
196
Vapor per ml agent
1ml agent / ml vapor @ 20C
Isoflurane
1ml agent / ml vapor @ 20C
195
Vapor per ml agent
1ml agent / ml vapor @ 20C
Sevoflurane
1ml agent / ml vapor @ 20C
182
Vapor per ml agent
1ml agent / ml vapor @ 20C
Methoxyflurane
1ml agent / ml vapor @ 20C
204
Vapor per ml agent
1ml agent / ml vapor @ 20C
Desflurane
1ml agent / ml vapor @ 20C
207
In a Plenum vaporizer the force comes in which direction?
Force comes distally
In a Draw over vaporizer the force comes in which direction?
The patient draws in the vapor
What happens if the flow is too fast?
It will not pick up the vapor
What happens if the flow is too slow?
The vapor will be in a higher conc
Type of vaporizer that corrects for changes in output due to high or low flow
Variable Bypass
____in the vaporizer inc surface are to make it flow compensated
Wicks
Charles Law:
As you ___ temp you __ vapor pressure
inc
inc
Charles Law:
Inc temp, inc vapor pressure
-> _____ conc of vapor delivered
higher
Charles Law:
As you ____ temp vapor pressure _____ -less agent delivered
dec
dec
Charles Law:
Vaporizers are temp compensated with a bimetallic strip thermostat at bottom that ____ gas flow through the bypass as temp ___ forcing more through the vaporizing chamber
dec
dec
Which is better lower or higher total gas flow.
Lower total gas flow is better,
less use of gas, less gas for patient to warm.
What does an interlock system prevent
Prevents having 2 vaporizers on at same time.
Variable bypass vaporizer Flow split at 1% Halothane
46:1
Variable bypass vaporizer Flow split at 2% Halothane
22:1
Variable bypass vaporizer Flow split at 3% Halothane
14:1
Variable bypass vaporizer Flow split at 1% Isoflrane
44:1
Variable bypass vaporizer Flow split at 2% Isoflurane
21:1
Variable bypass vaporizer Flow split at 3% Isoflurane
14:1
Variable bypass vaporizer Flow split at 1% Enflurane
29:1
Variable bypass vaporizer Flow split at 2% Enflurane
14:1
Variable bypass vaporizer Flow split at 3% Enflurane
9:1
Variable bypass vaporizer Flow split at 1% Sevoflurane
25:1
Variable bypass vaporizer Flow split at 2% Sevo
12:1
Variable bypass vaporizer Flow split at 3% Sevo
7:1
Variable bypass vaporizer Flow split at 1% Desflurane
138:1
MAC =
Is volume% at 1 ATM
Minimum Alvelor Concentration
50% Pt will not move to noxious stimuli
MAC (vol%) x Pmac1 (mmHg)
Halothane =
MAC (vol%) x Pmac1 (mmHg)
.75% x 760 = 5.7
MAC (vol%) x Pmac1 (mmHg)
Ethrane
MAC (vol%) x Pmac1 (mmHg)
1.68% x 760 = 12.8
MAC (vol%) x Pmac1 (mmHg)
Isoflurane =
MAC (vol%) x Pmac1 (mmHg)
1.15% x 760= 8.7
MAC (vol%) x Pmac1 (mmHg)
Sevoflurane
MAC (vol%) x Pmac1 (mmHg)
1.7% x 760 = 12.9
MAC (vol%) x Pmac1 (mmHg)
Desflurane =
MAC (vol%) x Pmac1 (mmHg)
6% x 760= 45.6
The most potent = the __%
lesser %
Most potent = Halothane .75%
Least potent = Desflurane 6%
General anesthesia = MAC of
1 1/3 95% will not move to noxious stimuli.
Desflurane Bottle
Glass, wrapped in plastic coat (pressure test to 85psi)
-agent specific inj fill sys
-
Desflurane Bottle
If bottle got warm -> lead to big ____ in press (boils at 22.8C)
Increase

a valve at the top gets tighter with inc press- less likely to leak agent
A desflurane vaporizer is called
Gas/vapor blender; Tech 6 vaporizer
Datex Ohmeda Tec 4
Splitting Ratio
Variable bypass(determines carrier gas split)
Datex Ohmeda Tec 4
Method of vaporization
Flow over (includ Aladin for des, which not require added heat like the Tec 6)
Datex Ohmeda Tec 4
Temp compensation
automatic temp compensation mech
Datex Ohmeda Tec 4
Calibration
Calibrated agent specific
Datex Ohmeda Tec 4
Position
Out of circuit
Datex Ohmeda Tec 4
Capacity
Tec 4 125ml
Tec 5 300ml
Vapor 19.n: 200ml
Aladin: 250ml
Copper Kettle, Vernitrol (original)
Splitting ratio
measured flow (operator deter carrier gas split)
Copper Kettle, Vernitrol (original)
Method of vaporization
Bubble through
Copper Kettle, Vernitrol (original)
Temp compensation
manual (changes in carrier gas flow) change by room temp
Copper Kettle, Vernitrol (original)
Calibration
none
multiple agent
Copper Kettle, Vernitrol (original)
position
out of circuit
Copper Kettle, Vernitrol (original)
capacity
200-600ml (no longer manufactured)
Datex Ohmeda Tec 6 (Desflurane)
Splitting Ratio
Dual circuit (carrier gas is not split)
Datex Ohmeda Tec 6 (Desflurane)
method of vaporization
gas/vapor blender (heat produces vapor which is inj into fresh gas flow
Datex Ohmeda Tec 6 (Desflurane)
temp compensation
electrically heated to a constant temp (39C) thermostatically controlled)
Datex Ohmeda Tec 6 (Desflurane)
Calibration
Calibrated agent specific
Datex Ohmeda Tec 6 (Desflurane)
Position
Out of circuit
Datex Ohmeda Tec 6 (Desflurane)
Capacity
390ml