Principles of the Anesthesia Machine Part 3

Question 1

Fresh gas coupling

Answer 1

The FGF from flowmeters add extra volume to the tidal

Question 2

Spirometer

Answer 2

Located in front of the expiratory valve, and measures the patients exhaled tidal volumes

Question 3

Spectrometer

Answer 3

Analyzes which gases and what concentrations are being used

Question 4

Oxygen analyzer

Answer 4

Reveals the Fi02

Question 5

Fail safe valve

Answer 5

Prevents accidental overdose of nitrous oxide, stops flow if senses O2 <25ps from wall

Question 6

Check valve

Answer 6

In O2 pipeline, prevents positive pressure from being transmitted back to the vaporizers and flowmeters. Not all machines have it.

Question 7

Auxiliary O2 flowmeter

Answer 7

For MAC cases

Question 8

False positive result

Answer 8

The presence of a problem, even though no problem exists. Usually happens when a patient is being scrubbed prior to draped, and it appears they are in Vtach

Question 9

False negative result

Answer 9

Indicates that there isn’t a condition present, when in reality there is. Pulseless electrical activity.

Question 10

Full cylinder of oxygen

Answer 10

2000psi, 660L

Question 11

Full cylinder of NO2

Answer 11

750psi, 1590L (always liquid until the tank <1/4 full)