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Equpiment 1 > Test 1 > Flashcards

Test 1 Flashcards

1
Q

Anesthesia workstations and components are covered by _____

A

ASTM (American Society for Testing and Materials)

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2
Q

Computer driven machines should be turned off and restarted how often?

A

Every 24 hours

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3
Q

Only what should be plugged into machines electrical outlets?

A

Anesthesia monitors only

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4
Q

Backup battery power is _____

A

At least 30 minutes

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5
Q

When gas travels from high pressure cylinder to the machine a _____________ decreases pressure to _______

A

Pressure regulator decreases pressure to 50 psi

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6
Q

Hanger yoke 3 functions

A
  1. Orients and supports the cylinder
  2. Provides a gas-tight seal
  3. Ensures unidirectional flow
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7
Q

Components exposed to high pressure

A
  • hanger yoke
  • cylinder pressure gauge
  • cylinder pressure regulators
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8
Q

___________ allow gas to enter machine but prevent gas from exiting the machine when no cylinder in yoke

A

Check valves

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9
Q

Cylinder and pipeline pressure gauges are __________

A

Bourdon gauges- metal needles which stretch with pressure and point to correct pressure

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10
Q

Pneumatic components of intermediate pressure system

A
  • master switch
  • oxygen failure devices
  • flow control devices
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11
Q

Accessories supplied by oxygen (4)

A
  1. Ventilators
  2. Accessory flowmeters
  3. Jet ventilation
  4. Oxygen flush
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12
Q

Flush buttons direct flow to ___________ at ______lpm.

______ require machine to be on

A

Common gas outlet at 35-75 lpm

Do not require master switch to be on

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13
Q

4 flush hazards

A
  1. Leaks
  2. Sticking and obstructing flowmeter output
  3. Barotrauma
  4. Awareness
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14
Q

Machines possess a pneumatic or electronic alarm device that sounds a warning when oxygen supply pressure decreases below _________

A

30 psi

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15
Q

The ________ will decrease supply pressure of other gases as the oxygen supply pressure decreases below _________

A

Fail-safe valve (oxygen pressure sensor shut-off valve)

Below 20-25 psi

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16
Q

Reducing decides just upstream from flow valves decrease pressure a second time to _______

A

15-19 psi

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17
Q

Machine components exposed to low pressure system

A

Flowmeter tubes
Vaporizers
Check valves
Common gas outlet

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18
Q

Most common means of regulating a flowmeter rate is ________

A

Needle valve

19
Q

Traditional flowmeters are _________ tubes. Which are _________

A
  • Thorpe tubes

- vertical glass tubes tapered with smallest diameter at bottom

20
Q

Physical properties of the gas that affect the flowmeter indicator include (4)

A
  1. Viscosity
  2. Density
  3. Weight of float
  4. Annulus of tube
21
Q

Flowmeters are color coded and oxygen knob is _____

A

Larger and usually textured differently

22
Q

Bobbin flowmeters are read _________

Ball floats are read _______

A

Bobbins are read from the top

Ball floats are read from the middle

23
Q

Factors affecting flowmeter accuracy (3)

A
  • back pressure from ventilator
  • static electricity/dirt
  • float stuck at top of Thorpe tube
24
Q

Should the common gas outlet be used to administer supplemental oxygen to a patient?

A

NO

25
Q

Minimum thickness for a gas cylinder

A

0.26 inches

26
Q

E cylinder oxygen capacity

A

660 liters

27
Q

E cylinder capacity of nitrous oxide

A

1590 liters

28
Q

Offers protection from excessive pressure from high temperature but not from overfilling

A

Fusible plug

29
Q

Protects against excess pressure from high temperature or overfilling

A

Rupture disc

30
Q

Cylinders must be inspected every ______

A

5 years

31
Q

3 safety systems to help avoid incorrect gas connection

A
  • color coding
  • PISS
    _ DISS
32
Q

Oxygen should be changed at _________ psi

A

1000 psi

33
Q

Full cylinder pressure for oxygen is

A

2200 psi

34
Q

Full cylinder pressure for air is

A

2200 psi

35
Q

Full cylinder pressure for nitrous is

A

745-750 psig

36
Q

Central supply or pipeline stores of oxygen may be stores as

A

Cryogenic liquid at low pressure
Or
Compressed gas in cylinders

37
Q

Most common contaminant of medical gas lines

A

Water

38
Q

Purity of medical gases is specified in _____________ and enforced by _____________

A

Specified in US Pharmacopeia

Enforced by FDA

39
Q

3 that have published standards regarding cylinders

A
  • DOT
  • National Fire Protection Association
  • Compressed Gas Association
40
Q

Most common cause of leak in new cylinder

A

Missing or defective washer

41
Q

Pipeline connection to anesthesia machine safety mechanism

A

DISS

42
Q

Cylinder gas is reduced to ________ by _______ upon entering the machine

A

50 psig by regulator

43
Q

3 hazards in pipeline systems

A
  • leaks
  • fires
  • cross- connections
44
Q

Pipeline alarms indicate if pressure increases or decreases ______ from normal

A

20% from normal

Equpiment 1 (2 decks)

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