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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
Factors that are involved in the production of C0 and formation of carboxyhemoglobin
``` specific volatile used DEIS=H high conc of volatile high temp low fresh gas flow dry soda lime ```
26
C0 production does not produce with what soda sorb?
Ca chlorode and CaOH
27
NIOSH Rregukation | highest conc of volatile anesthetics allowed in the OR in conjunction with N2O
0.5ppm
28
device on anesthesia machine that most reliably detects delivery of hypoxic gas mixture
O2 analyzer
29
most common complication of direct laryngoscopy and tracheal intubation ?
Dental trauma
30
most common complication while the et is in place
endobronchial intubation
31
gas leaving the compressed gas cylinder enters the anesthesia machine through a pressure regulator that reduces the pressure to
45-55 psi
32
laser and what filter
CO2 laser:clear plastic lenses argon krypton laser:amber orange filte Nd:YAG - green tinted pitaddium titanyl : red
33
prevent incorrect connections of medical gas lines
DISS
34
the pressure drops across an obstruction narrowing or stenosis
modified Bernoullis equation
35
pulse oximeter measure the alternating current component of light absorbance at each of two wavelengths?
660nm and 940nm
36
has a greatest effect on SaO2 measurement bec the extinction coefficient is so similar to that of oxyhemoglobin
Methylene blue
37
Rotameters
``` thorpe tube rate of gas depends on: pressure resistance to gas floe physical property of gas ``` cannot be INTERCHANGEABLY
38
at high altitudes , the flow of gas through a will be
greater than expected at high flow | but accurate at low flow
39
gas density ___ with increasing altitude
decreases
40
Pacemaker
``` 1st letter : paced 2nd letter : sensed 3rd lette: response to sensing 4th letter: programmability or rare modulation 5th letter multisite pacing ```
41
EFFECTS ON SSEP? VOLATILE? __ amplitude __ latency
VOLATILE: DECREASE amplitude INCREASElatency
42
EFFECTS ON SSEP? PROPOFOL? __ amplitude __ latency
DEC BOTH
43
EFFECTS ON SSEP? ETOMIDATE __ amplitude __ latency
INCREASED BOTH
44
EFFECTS ON SSEP? MIDAZOLAM? __ amplitude __ latency
decrease amplitude | little effect on latency
45
EFFECTS ON SSEP? OPIOIDS __ amplitude __ latency
dec amplitude | inc latency
46
EFFECTS ON SSEP? NMB? __ amplitude __ latency
NO EFFECT
47
higher pressure circuit
``` gass supply from pipeline and tank and piping pressure gauges pressure reduction regulators check valves oxygen pressure sensor shutoff valves ```
48
LOW PRESSURE CIRCUIT
gas flow control valves flow meters vaporizer vaporizer check valves
49
CENTRAL TEMPerature
``` pulmonary artery distal esophagus axilla nasopharynx tympanitic membrane ```
50
which laser light penetrates tissue. the most?
Nd:YAg
51
HELIOC HAS a ____density than nitrogen
lower
52
maximun F-iO2 that can be delivered by a nasal cannula is
0.45 FiO2 | 6L/min
53
What color of nail | polish would have the GREATEST effect on the accuracy of the dual wave length pulse oximeter?
BLUE
54
The minimum macroshock current required to elicit ventricular fibrillation
100mA
55
Maximum leakage of electric current allowed through electrodes or catheters in contact with the heart at what microA?
10
56
E comprrssed gas cylinder of air contains?
2000psi: 625 L
57
the most freq cause of mechanical failure of the anesthesia delivery system to deliver adequate O2 to the patient is
disconnection of the O2 supply system from the patient
58
Difference between ETCo2 and PaCO2 ? | secondary to?
5-10mmhg | Alveolar dead space
59
intermediate pressure circuit
pipeline pressure 50-55psi then go to second stage regulator oxygen flush valve by pass the low pressure circuit
60
``` PISS NUMBER air o2 n2o co2 ```
air ( 1,5) o2 ( 2,5) n2o (3,5) co2 (1,6)
61
Sevo + sodalime | NaOH and KOH
Compound A neohrotoxic
62
difference between soda lime and cal hydroxide
absorptive capacity CaOH- 10.2L CO2 / 100g soda lime 26L of CO2/ 100g
63
ARTERIAL LINE | UNDERDAMPED
exaggerated reading | wide pulse
64
ARTERIAL LINE | OVERDAMPED
readings are diminished | narrow pulsed
65
MEDICAL GAS CYLINDER COLLR CODED BASED ON UNITED STATES ? ``` AIR CO2 helium nitrogen n2o oxygen ```
``` AIR. yellow CO2. gray helium. brown nitrogen black n2o blue oxygen. green ```
66
MEDICAL GAS CYLINDER COLLR CODED BASED ON INTERNATIONAL? ``` AIR CO2 helium nitrogen n2o oxygen ```
``` AIR. white black CO2. gray helium. brown nitrogen black n2o blue oxygen. white ```
67
MAPLESON CIRCUIT: no reservior bag no apl bag
MAPLESON E E-EMPTY wala lahat Arye's Tpiece
68
MAPLESON CIRCUIT: no apl valve with resevior bag
MAPLESON F
69
MAPLESON CIRCUIT: | corrugated tubing
MAPLESON C | naCUT Ang tubing
70
MAPLESON CIRCUIT: | the only circuit that FGF is AWAY from the patient
MAPLESON A AWay fromt the patient
71
MAPLESON CIRCUIT: | efficiency for Controlled?
D DFE>BC> A
72
MAPLESON CIRCUIT: | efficiency for SPONTANEOUS ?
A A>DFE> CB
73
MAPLESON CIRCUIT: | efficient for spontaneous and controlled for pediatrics
F jackson ree's
74
MAPLESON CIRCUIT: | efficient for spontaneous and controlled for pediatrics
F jackson ree's
75
MAPLESON CIRCUIT: | APL near the bag
MAPLESON D
76
MAPLESON CIRCUIT: | APL near the bag
MAPLESON D

ANESTHESIA : Hall (6 decks)

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