Machine Overview

Question 1

Anesthesia work station consists of: 8

Answer 1

Gas supply devices, anesthesia machine, vaporizers, vent, breathing system, scavenging system, respiratory/hemodynamics monitors, suction

Question 2

What is common gas outlet

Answer 2

Delivery of medical gases and vapors of volatile anesthetics in known concentrations

Question 3

Removal of exhaled gases

Answer 3

Scavenging

Question 4

Standards of anesthesia workstations overseen by 2

Answer 4

American society for testing and materials (ATSM)
And
American national standards institute ANSI

Question 5

Standards specifies what

Answer 5

Required components of anesthesia work station

Question 6

High pressure

Answer 6

2000 PSI

Question 7

Intermediate pressure

Answer 7

50 psi

Question 8

Pressure of gas in hospital

Answer 8

50 psi

Question 9

Green, blue, pink usually stand for what

Answer 9

Green- 02
Blue- n20
Pink- agent

Question 10

What does pressure regulator do

Answer 10

Lowers p of gas to 45 psi. Lower than p of hospital

Question 11

Second stage regulator reduces pressure to what

Answer 11

20 psi

Question 12

5 pathways of oxygen

Answer 12

Flow to fresh gas flowmeters
Powers oxygen flush valve
Activates fail safe valve
Activates o2 supply/low pressure alarm 
Compresses bellows of vent

Question 13

What is in high pressure system

Answer 13

Cylinders, hanger yoke,yoke block w check valves, cylinder pressure gauge, cylinder pressure regulator

Question 14

Gas cylinder color 
Air, Oxygen 
Helium 
Co2 
N2, NO

Answer 14

Yellow, green (intl white)
Brown 
Grey
Blue 
Black

Question 15

Most anesthesia machines use what size cylinder

Answer 15

E

Question 16

Oxygen tank: liters, pressure

Answer 16

625 L

2000 psi

Question 17

NO volume and pressure in tank

Answer 17

1590 L

750 psi

Question 18

Air gas volume and pressure

Answer 18

625 L

1800 psi

Question 19

Pin index safety system numbering

Answer 19

1-6, counts from right to left

Question 20

Placement of holes:
Oxygen
N2O
CO2

Answer 20

2-5
3-5
1-6

Question 21

Placement of holes:
Air
Entonox

Answer 21

1-5

2-4

Question 22

Pressure in oxygen tank falls ____ to amt of liters left in tank

Answer 22

Proportionally

Question 23

Cylinder reassure regulators reduce pressure to ___, second stage to __-__ (___-__)

Answer 23

45

12-19 (20-30)

Question 24

Intermediate pressure system: 7

Answer 24

Pneumatic part of master switch, pipeline inlets (DISS), pipeline check valves/pressure regulators, oxygen fail safe valve, oxygen second stage regulator, flow meter control valves

Question 25

Wall supply what pressure

Answer 25

50-55 psi

Question 26

Oxygen supply to machine what pressure (cylinder)

Answer 26

2000-2200 psi

Question 27

Diss Stands for what What it connects Required for what

Answer 27

Diameter index safety system Medical gas lines- body, nipple, nut Every anesthesia machine

Question 28

What is oxygen pressure sensor shut off valve

Answer 28

A safety valve downstream of n20 supply source. Shuts off n2o or decreases it if o2 supply pressure decreases to pre determined threshold level (28)

Question 29

When oxygen enters machine goes to what (2)

Answer 29

Pressure sensor shutoff valve and oxygen supply failure alarm system

Question 30

Flow through oxygen flush valve, from what

Answer 30

Pipeline/common gas outlet to machine, 35-75 LPM

Question 31

Potential harm from common gas outlet

Answer 31

Barotrauma and diluting anesthetic vapors

Question 32

When to use o2 flush valve

Answer 32

Machine check | Expiratory phase of respiration to fill bellows

Question 33

Low pressure system: 6 | Pressure is slightly above what

Answer 33

Flow meter tubes, hypoxia preventing safety (proportioning) device, vaporizers, check valves, pressure relief devices, common gas outlet Atmospheric pressure

Question 34

At low flow in flowmeter: ___ flow, ___ is important, flow is __ At high flow in flowmneter: ___ flow, ___ is important

Answer 34

Tubular (diameter of channel less than length), viscosity, laminar Turbulent, density

Question 35

Types of flow meters

Answer 35

Thorpe tubes and electronic flow sensors

Question 36

Safety features of flow meters: gas is __ __. O2 flow knob is what (3). How hypoxic mixture is prevented

Answer 36

Color coded Flitted, projects beyond other knobs, larger in diameter Oxygen flow meter downstream from nitrous

Question 37

When fail safe flow meter might not be fail safe

Answer 37

Leak in flow meter

Question 38

Anesthesia machine check: when and what

Answer 38

Complete daily check q 24h | Circuit check before each check

Question 39

What you check in machine check: 9

Answer 39

Gas line connections, integrity of seal of system, Flow meter controls, ventilator, Vaporizer levels, oxygen analyzer, Low pressure circuit leak test, circle system test, Work station self test

Question 40

Low pressure circuit test Purpose Components of this circuit are what

Answer 40

Checks integrity of machine from flow control valves to common gas outlet Most vulnerable to breakage

Question 41

Negative pressure leak test Procedure requires what Performed using suction bulb to what, how

Answer 41

The machine master switch, flow valves, and vaporizers to be off Common gas outlet. Bulb squeezed several times until collapsed, created vacuum in low pressure circuit

Question 42

Negative pressure leak test | What tells you there isn't a leak

Answer 42

Bulb remains collapsed for at least 10 seconds

Question 43

Purpose of circle system check | Extends from what to what

Answer 43

Evaluates integrity of circle system | Common gas outlet to y piece

Question 44

Circle system check How to do leak test Doesnt assess what

Answer 44

Occlude y piece, close apl valve. Pressurize circuit to 30 cm h20 using 02 flush valve. Integrity of unidirectional valves

Question 45

Circle system check | Flow test

Answer 45

Attach breathing bag to y piece, turn on ventilator, assess integrity of unidirectional valves

Question 46

What is the most important monitor on machine

Answer 46

Oxygen analyzer

Question 47

Oxygen analyzer is only machine that detects what

Answer 47

Problems downstream from flow control valves

Question 48

Oxygen analyzer procedure

Answer 48

Expose o2 sensor to room air (21%) for a given time

Question 49

Best monitor you have

Answer 49

Vigilance