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ANESTHESIA : Hall > CH1 ANESTHESIA MACHINE AND EQUIPMENTS > Flashcards

CH1 ANESTHESIA MACHINE AND EQUIPMENTS Flashcards

1
Q

The control of mechanism of standard anesthesia ventilators is accomplished by

A

Compressed oxygen

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2
Q

full N20

psi:ml?

A

750 psi:1590 ml

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3
Q

How much should be consumed before n20 dec its psi?

A

three fourth of N20

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4
Q

DESFLURANE

vapor pressure?

A

665mmHg

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5
Q

what are the Test for low pressure part of the machine?

A

positive pressure test

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6
Q

this valve permit unidirectional flow of gases

A

CHECK VALVES

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7
Q

another term for pop off valve

A

adjustable pressure limiting valve

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8
Q

pressure sensor shut off valve

discontinue the flow of N2O
of the O2 below psi

A

FAIL SAFE VALVE

ratio 3:1

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9
Q

fixed mass of gas at constant temperature, the product of pressure and volume contact

A

BOYLE’s LAW

estimate the vol of gas remaining in a compressed gas cylinder by measuring the pressure within the cylinder

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10
Q

oxygen ?

psi:ml

A

2000 psi:625 ml

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11
Q

color of gases

A

o2 - green
n2o blue
air -yellow

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12
Q

BOBBIN not rotating ?

A

NO FLOW of O2

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13
Q

O2 and N2:
enters the anesthesia machine from a central supply source as (pressure)
N20?O2?

then pass true
first stage pressure regulator : ___psi
second stage of pressure: ___ psi

A

N20: 750 psi
O2: 2200 psi

then pass true
first stage pressure regulator : 45psi
second stage of pressure: 14 to 16 psi

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14
Q

NIOSH: N2O

highest trace of conc at the OR should be < _____ppm , In dental permit up to ____ppm

A

<25 -OR

<50 dental

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15
Q

identical saturated vapor pressure can be used interchangeably?

true or false

A

true

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16
Q

which volatile can be interchangeable

A

HI
HALOTHANE 243
ISOFLURANE 250

SEEN
SEVOFLURANE 160
ENFLURANE 178

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17
Q

occurs when gas flows through a region of severe constriction

A

TURBULENT FLOW

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18
Q

occurs when gas flows ws down parallel aided tube at a rate less than critical velocity

A

LAMINAR FLOW

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19
Q

Turbulent flow is directly proportional to

A

density of the gas

helium decrease the density

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20
Q

relationship between intra-alveolar pressure surface tensiin and radius of the alveoli is described by what law?

A

Laplace’s Law

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21
Q

states that the surface tension of the sphere is directly proportional to the radius of the sphere and pressure within the sphere

A

LAPLACE LAWS

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22
Q

flow of the oxygen is selected on a separate flowmeter to pass into the vaporizing chamber from which the anes vapor emerges at its saturated vapor pressure

A

measured flow vaporizer

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23
Q

total gas flow is split between a variable by pass and the vaporizer chamber containing the anesthetic agent

A

VARIABLE BY PSS VAPORIZER

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24
Q

in variable by pass vaporizer the ratio of these 2 flows is called the ?

A

SPLITTING RATIO

depends on the anes agent, the temperature, vapor conc and the saturated vapor pressure of the anesthetic

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25
Q

Factors that are involved in the production of C0 and formation of carboxyhemoglobin

A 
specific volatile used
DEIS=H
high conc of volatile
high temp
low fresh gas flow
dry soda lime
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26
Q

C0 production does not produce with what soda sorb?

A

Ca chlorode and CaOH

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27
Q

NIOSH Rregukation

highest conc of volatile anesthetics allowed in the OR in conjunction with N2O

A

0.5ppm

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28
Q

device on anesthesia machine that most reliably detects delivery of hypoxic gas mixture

A

O2 analyzer

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29
Q

most common complication of direct laryngoscopy and tracheal intubation ?

A

Dental trauma

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30
Q

most common complication while the et is in place

A

endobronchial intubation

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31
Q

gas leaving the compressed gas cylinder enters the anesthesia machine through a pressure regulator that reduces the pressure to

A

45-55 psi

32
Q

laser and what filter

A

CO2 laser:clear plastic lenses

argon krypton laser:amber orange filte

Nd:YAG - green tinted

pitaddium titanyl : red

33
Q

prevent incorrect connections of medical gas lines

A

DISS

34
Q

the pressure drops across an obstruction narrowing or stenosis

A

modified Bernoullis equation

35
Q

pulse oximeter measure the alternating current component of light absorbance at each of two wavelengths?

A

660nm and 940nm

36
Q

has a greatest effect on SaO2 measurement bec the extinction coefficient is so similar to that of oxyhemoglobin

A

Methylene blue

37
Q

Rotameters

A 
thorpe tube
 rate of gas depends on:
pressure
resistance to gas floe
physical property of gas

cannot be INTERCHANGEABLY

38
Q

at high altitudes , the flow of gas through a will be

A

greater than expected at high flow

but accurate at low flow

39
Q

gas density ___ with increasing altitude

A

decreases

40
Q

Pacemaker

A 
1st letter : paced 
2nd letter : sensed
3rd lette:  response to sensing 
4th letter:  programmability or rare modulation
5th letter 
multisite pacing
41
Q

EFFECTS ON SSEP?
VOLATILE?
__ amplitude
__ latency

A

VOLATILE:
DECREASE amplitude
INCREASElatency

42
Q

EFFECTS ON SSEP?
PROPOFOL?
__ amplitude
__ latency

A

DEC BOTH

43
Q

EFFECTS ON SSEP?
ETOMIDATE
__ amplitude
__ latency

A

INCREASED BOTH

44
Q

EFFECTS ON SSEP?
MIDAZOLAM?
__ amplitude
__ latency

A

decrease amplitude

little effect on latency

45
Q

EFFECTS ON SSEP?
OPIOIDS
__ amplitude
__ latency

A

dec amplitude

inc latency

46
Q

EFFECTS ON SSEP?
NMB?
__ amplitude
__ latency

A

NO EFFECT

47
Q

higher pressure circuit

A 
gass supply from pipeline and tank and  piping
pressure gauges
pressure reduction regulators
check valves
oxygen pressure sensor shutoff valves
48
Q

LOW PRESSURE CIRCUIT

A

gas flow control valves
flow meters
vaporizer
vaporizer check valves

49
Q

CENTRAL TEMPerature

A 
pulmonary artery
distal esophagus
axilla
nasopharynx
tympanitic membrane
50
Q

which laser light penetrates tissue. the most?

A

Nd:YAg

51
Q

HELIOC HAS a ____density than nitrogen

A

lower

52
Q

maximun F-iO2 that can be delivered by a nasal cannula is

A

0.45 FiO2

6L/min

53
Q

What color of nail

polish would have the GREATEST effect on the accuracy of the dual wave length pulse oximeter?

A

BLUE

54
Q

The minimum macroshock current required to elicit ventricular fibrillation

A

100mA

55
Q

Maximum leakage of electric current allowed through electrodes or catheters in contact with the heart at what microA?

A

10

56
Q

E comprrssed gas cylinder of air contains?

A

2000psi: 625 L

57
Q

the most freq cause of mechanical failure of the anesthesia delivery system to deliver adequate O2 to the patient is

A

disconnection of the O2 supply system from the patient

58
Q

Difference between ETCo2 and PaCO2 ?

secondary to?

A

5-10mmhg

Alveolar dead space

59
Q

intermediate pressure circuit

A

pipeline pressure
50-55psi

then go to second stage regulator

oxygen flush valve by pass the low pressure circuit

60
Q 
PISS  NUMBER 
air
o2
n2o 
co2
A

air ( 1,5)
o2 ( 2,5)
n2o (3,5)
co2 (1,6)

61
Q

Sevo + sodalime

NaOH and KOH

A

Compound A

neohrotoxic

62
Q

difference between soda lime and cal hydroxide

A

absorptive capacity

CaOH- 10.2L CO2 / 100g

soda lime 26L of CO2/ 100g

63
Q

ARTERIAL LINE

UNDERDAMPED

A

exaggerated reading

wide pulse

64
Q

ARTERIAL LINE

OVERDAMPED

A

readings are diminished

narrow pulsed

65
Q

MEDICAL GAS CYLINDER COLLR CODED BASED ON UNITED STATES ?

AIR
CO2 
helium
nitrogen 
n2o 
oxygen
A 
AIR.         yellow 
CO2.       gray
helium.    brown 
nitrogen  black 
n2o          blue 
oxygen.    green
66
Q

MEDICAL GAS CYLINDER COLLR CODED BASED ON INTERNATIONAL?

AIR
CO2 
helium
nitrogen 
n2o 
oxygen
A 
AIR.         white black
CO2.       gray
helium.    brown 
nitrogen  black 
n2o          blue 
oxygen.   white
67
Q

MAPLESON CIRCUIT:
no reservior bag
no apl bag

A

MAPLESON E

E-EMPTY wala lahat

Arye’s Tpiece

68
Q

MAPLESON CIRCUIT:
no apl valve
with resevior bag

A

MAPLESON F

69
Q

MAPLESON CIRCUIT:

corrugated tubing

A

MAPLESON C

naCUT Ang tubing

70
Q

MAPLESON CIRCUIT:

the only circuit that FGF is AWAY from the patient

A

MAPLESON A

AWay fromt the patient

71
Q

MAPLESON CIRCUIT:

efficiency for Controlled?

A

D

DFE>BC> A

72
Q

MAPLESON CIRCUIT:

efficiency for SPONTANEOUS ?

A

A

A>DFE> CB

73
Q

MAPLESON CIRCUIT:

efficient for spontaneous and controlled for pediatrics

A

F

jackson ree’s

74
Q

MAPLESON CIRCUIT:

efficient for spontaneous and controlled for pediatrics

A

F

jackson ree’s

75
Q

MAPLESON CIRCUIT:

APL near the bag

A

MAPLESON D

76
Q

MAPLESON CIRCUIT:

APL near the bag

A

MAPLESON D

ANESTHESIA : Hall (6 decks)

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