Anesthesia Machine

Question 1

How much is in a full O2 tank?

Answer 1

660L
1900 psi

Question 2

How much is in a full air tank?

Answer 2

625 L
1900 psi

Question 3

How much is in a full N2O tank?

Answer 3

1590 L
745 psi

Question 4

How long will your O2 tank last if has 500 psi remaining running at 2L/min?

Answer 4

87 min

Question 5

What is the weight of a nitrous tank when it’s full? Empty?

Answer 5

20.7lbs
14.1lbs

Question 6

Equation for Reynold’s Number

Answer 6

(Diameter x Density x Velocity) / (Viscosity)

Question 7

Using flowmeters, if the pt is on 1L/min air and 3 L/min O2, what is the FiO2?

Answer 7

((1 x 21) + (3 x 100)) / 4 (total liters)

Question 8

With fresh gas coupling, the total Vt delivered to the pt =?

Answer 8

Vt set on ventilator + FGF during inspiration - volume lost to compliance

Question 9

liquid anesthetic usage equation

Answer 9

Vol % x FGF(L/min) x 3

Question 10

does a variable bypass vaporizer need to be calibrated for elevation?

Answer 10

no

Question 11

Which device will be the FIRST to detect an oxygen pipeline crossover?

Answer 11

oxygen analyzer

Question 12

The oxygen analyzer resides in what limb of the breathing circuit?

Answer 12

inspiratory

Question 13

What 2 functions does the drive gas on a pneumatic ventilator serve?

Answer 13

1. It compresses the bellows
2. It opens & closes the ventilator spill valve

Question 14

What is the position of the ventilator spill valve during inspiration?

Answer 14

Closed (ensures Vt goes to pt not scavenger)

Question 15

What is the minimum expiratory pressure needed to open the ventilator spill valve?

Answer 15

3 cmH2O

Question 16

On a pneumatic ventilator, a hole in the bellows may cause?

Answer 16

barotrauma

Question 17

In a pneumatic ventilator, what might a leak in the bellows cause?

Answer 17

the reading on the oxygen analyzer to increase

Question 18

The piston/pneumatic ventilator preserves tank oxygen in the event of oxygen pipeline failure?

Answer 18

Piston

Question 19

Which ventilator allows for more precise delivery of tidal volumes?

Answer 19

Piston

Question 20

At what pH does ethyl violet change to purple?

Answer 20

when it falls below 10.3

Question 21

How much CO2 can soda lime absorb?

Answer 21

26L of CO2 per 100g of absorbent

Question 22

What is the mesh size in soda lime?

Answer 22

4-8

Question 23

Which component of the scavenging system determines if it’s an open or closed system?

Answer 23

The scavenging interface

Question 24

What are 4 ways to detect circuit disconnect?

Answer 24

1. pressure
2. volume
3. EtCO2
4. vigilance

Question 25

According to the US Department of Transportation, the gas cylinder label must include:

Answer 25

1. date of last inspection
2. serial number

Question 26

How much in full tank of CO2?

Answer 26

1,590 L
838 psi

Question 27

Answer 27

Question 28

Answer 28