Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Anesthesia Principles > Medical Gases > Flashcards

Medical Gases Flashcards

1
Q

What two locations are medical gases stored?

A

metal cylinders or

reservoirs of bulk gas storage and supply systems

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

____ are sometimes the only source of medical gas for anesthesia machines in OOOR settings.

A

e-cylinders

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

If an anesthetic is being administered with only e-cylinders what safety consideration must be made?

A

BOTH the anesthesia provider adn related support personell must first ensure an adequate supply of reserve cylinders are avaliable

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

When using e-cylinders only when must you replace the cylinder?

A

before it is completely empty

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

E-cylinders of O2 are filled to what psig?

A

1900

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the fix mass of a gas?

A

When cylinders are full, the cylinder contains a fixed number of gas molecules

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

What is Boyles law?

A

Pressure x Volume equals a constant rate as long as temp doesnt change
(P1V1 = P2V2)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

1 atmosphere = ___ mmHg

A

760

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What indicates an O2 e-cylinder is 1/2 empty?

A

1000 psig

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

When a tank of O2 is 50% full, how many liters does it contain?

A

330 L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

B/c O2 exists only as a gas at room temp, the tank’s _____ can be used to determine how much gas remains in the e-cylinder.

A

pressure gauge

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What is the tank volume in a full O2 tank?

A

660 L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

How much should be in an O2 tank to transport?

A

At least 50%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

How many L does a full e-cylinder of N2) have?

A

1590 L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

As long as some liquid Nitrous Oxide ramins in the tank and the temperature remains constnat, the pressure in the tank will be ___ psi.

A

745

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

A full e-cylinder of N2O used at 3L/min will last ___ hours.

A

9 hours

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How do you determine how much is left in an N2O tank?

A

weigh it

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

What color is the e-cylinder for medical air?

A

yellow

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

What is the full cylinder pressure of medical air?

A

1900 psig

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

How many liters does a tank of medical air contain when full?

A

625 L

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
21
Q

What color is O2 tank?

A

green

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
22
Q

What color is CO2 tank?

A

gray

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
23
Q

What color is N2O tank?

A

blue

24
Q

What color is helium tank?

A

brown

25
Q

Who regulates the shipping of and marking of medical gas cylinders?

A

US department of transportation (DOT)

26
Q

The ____ is stamped on each e-cylinder and should never be exceeded.

A

service pressure

27
Q

What safety feautres prevent e-cylindres from exploding?

A

Fusible plug
Frangible disk assembly
Safety relief valve

28
Q

What is the fusible pulg?

A

made of metal alloy w/ a low melting point, will melt in a fire and allow gas to escapre

on e-cylinders

29
Q

What is a frangible disk assembly?

A

E-cylinders contain a metal disk designed to break when a certain pressure is exceeded and tehreby allow gas to escape through a d/c vent

30
Q

What is a safety relief valve?

A

A spring-loaded mechanism on e-cylinders that closes a d/c vent

31
Q

What letter indicates a small cylinder?

A

E

32
Q

What letter indicates a large cylinder?

A

H

33
Q

What is the funciton of regulators that attach to valve ports of cylindres?

A

reduce and control teh pressure of the gas

34
Q

The connection between cylinder and yoke is made gas specific by the ____ for small cylinder connections.

A

pin index safety system (PISS)

35
Q

What PISS system relies on _____ on the cylinder yoke connector just below the fitting for the valve outlet port.

A

two 5 mm stainless steel pins

36
Q

PISS: How many different pin positions are avaliable depending on the type of gas in the cylinder?

A

7

37
Q

What is the pin position for O2?

A

2-5

38
Q

If a gas cylinder cannot be secured what should you do?

A

lay on its side

39
Q

How do you store small cylinders?

A

in nonflammable racks

40
Q

How do you store large cylinders?

A

chained to a wall

41
Q

What indicates a leak in a cylinder when opened?

A

hissing noise

42
Q

What are the 3 components of medical gas pipeline?

A

central gas supply

pipelines to transport

connectors

43
Q

In central supply systems, pressure relief valves are designed to open if pressure in teh system exceeds ____.

A

the normal level by 50%

44
Q

Will you be notified if a reserve supply of O2 has been accessed d/t low supply in main storage vessel?

A

Yes, alarm system is used

45
Q

Pressure alarms built into the main gas supply line sound when the line pressure varies by ______.

A

20% in either direction from the normal (normal = 55)

46
Q

What is the normal operating pressure of main supply line?

A

@ 55 psig

47
Q

If an O2 concentrator is used, O2 concentration ______.

A

may vary w/ gas flow

48
Q

O2 concentrators are most effective at delivering O2 at what flow?

A

<4L/min

49
Q

What is the Heliox mixture?

A

He/O2

3:1

50
Q

Why is a Heliox mixture supplied premixed on some newer anesthesia machines?

A

To prevent the risk of hypoxia that occurs when 100% Helium tanks are used

51
Q

What type of prodcut is Nitric Oxide classifed as?

A

pharmaceutical product (not medical gas)

52
Q

Larger ORs must have enough suction to remove ______ of air.

A

99L/minute

53
Q

Normal wall vacuum = ___ psig.

A

-7

54
Q

How many vacuum pumps must be present in OR?

A

2 independt pumps, capable of handling peak laod alone

55
Q

If one vacuum pump fails, what happens?

A

Automatically switches to other

56
Q

Central vacuum’s system piping must not be exposed to ______ to prevent ____.

A

low temperatures

condensation

57
Q

What is a noninterchangeable thread system for medical gas pipelines?

A

DISS

Anesthesia Principles (10 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions