Anesthesia Work Station

Question 1

Which breathing circuit is best for CONTROLLED VENTILATION?

A. Mapleson A

B. Mapleson C

C. Mapleson D

Answer 1

Mapleson D

Question 2

Components of CIRCLE SYSTEM:

Answer 2

FLURRYS

Fresh gas entry
Low resistance tubing
Unidirectional Valves
Reservoir Bag
Relief Valve
Y-piece
Soda Lime

Question 3

What law governs the concept of Second Gas effect?

A. Graham’s law

B. Henry’s law

C. Hagen Poiseuille’s Law

D.

Answer 3

GRAHAM’S LAW

The rate of diffusion is inversely proportional to the square root of its molecular weight.

Question 4

Undersized ETT causes tremdous decrease in flow of gases. This is due to what law?

Answer 4

HAGEN POISEUILLE’S LAW

Question 5

What is the average velocity of sound in soft tissue?

Answer 5

1,540 m/s

Question 6

Pressure from common gas outlet when oxygen flush valve delivers flow

Answer 6

Intermediate Pressure

Question 7

Maam Tata accidentally filled the sevo vaporizer with iso, what would happen?

Answer 7

OVERDOSE (Vapor Pressure of ISO is higher than SEVO)

One important property of vapor pressure is that as long as any liquid remains in the container, the vapor pressure is independent of the volume of that liquid.

Question 8

This is what prevents putting the wrong gas cylinder on the wrong hanger yoke:

Answer 8

PISS (Pin Index Safety System)

Question 9

What is the RATE OF OXYGEN delivery from oxygen flush valve?

Answer 9

35-75L/min

Question 10

A full air cylinder contains how many liters?

Answer 10

625L

Question 11

Which inhaled anesthetics use variable bypass vaporizers?

Answer 11

HISE

Halothane
Isoflurane
Sevoflurane
Enflurane

Question 12

PSI in full air cylinder

Answer 12

1800

Question 13

How many liters of oxygen are in a full cylinder?

Answer 13

625

Question 14

This Volatile gas is heated to 39 degrees C and pressurized to TWO atmospheres:

Answer 14

Desflurane

(Desflurane Tech 6 Vaporizer)

Question 15

What is the PSI of full cylinder of carbon dioxide?

Answer 15

838 PSi

Question 16

This prevents transfer of gas from the cylinder with higher pressure to the cylinder with lower pressure:

Answer 16

CHECK VALVE between cylinders that are double yoked

Question 17

What are the components included in intermediate pressure?

Answer 17

pressure gauges from pipeline, DISS, second stage regulator, flow control valve of manifold, oxygen pressure “fail safe” shut off valve, flush valve

Question 18

What is the only valves which reduce pressure in the anesthesia work station?

Answer 18

Diaphragm Valve

Question 19

Which property of Oxygen is detected by the fail-safe device?

Answer 19

PRESSURE

Question 20

Factors that can artificially lower SpO2:

Answer 20

1. dyes (ie methylene blue, indocyanine
2. Blue nail polish
3. Shiver/motion artifact
4. Ambient light
5. malpositioned sensor
6. low perfusion

Question 21

This is the point where gas prepared within the machine enters the breathing circuit?

A. flowmeter

B. common gas outlet

C. check valves

Answer 21

B. common gas outlet

Question 22

Every patient ventilated with an ascending bellows anesthesia ventilator receives approximately ___ cm H2O of positive end-expiratory pressure (PEEP):

A. 10 cmH20

B. 2.5 - 3 cmH20

C. 5 cmH20

Answer 22

2.5 - 3 cmH20