Ventilator Graphics

Question 1

Answer 1

1. Flow
2. PIP
3. Resistive work or Transairway Pressure
4. Pplat
5. Cstat

Question 2

Answer 2

1. Baseline
2. Expiratory Upstroke
3. Alveolar Plateau
4. Partial Pressure of End Tidal CO2
5. Inspiratory Downstroke

Question 3

What’s 1-3?

(Disregard #4)

Answer 3

1. PIFR
2. PEFR
3. Tidal Volume

Question 4

Answer 4

1. Assisted Breath
2. PEEP

Question 5

What’s loop A?

What’s loop B?

Answer 5

A: Increased Raw on FV loop

B: Normal

Question 6

x2

Answer 6

Active exhalation or increased mechanical deadspace

Question 7

Answer 7

Air Leak

Question 8

Answer 8

Air Leak

Question 9

What is this?

What’s causing it (x2)

Answer 9

Rebreathing CO2.

(Inadequate flow or insufficient expiration time)

Question 10

Bird Beak or Duck Bill

Answer 10

Overdistension.

More pressure with little additional volume

Question 11

Capnogram

What does this pattern indicate?

What could cause it?

Answer 11

Indicates delayed exhalation of CO2.

Caused by obstruction, Bronchospasm, or kinked tube.

Question 12

Answer 12

“Curare Cleft”

Asynchronous spontaneous breathing

(Ventilated, spontaneous patient may be starting to wake up!)

Question 13

What does this indicate?

You should consider that the ___ might be too high.

Answer 13

Indicates patient effort.

Sensitivity might be too high.

Question 14

Capnogram

Answer 14

Circuit leak

Question 15

Answer 15

Increased Raw

Question 16

Answer 16

Increased Raw

Question 17

X2

Answer 17

Air leak

or

Air Trapping

Question 18

This could be three things.

1. ___ of trapped air
2. ___ that is forced
3. Increased ___.

Answer 18

Exhalation of trapped air

or

Forced Exhalation

or

Increased mech deadspace

Question 19

Shift to the right

Answer 19

Bad compliance

Question 20

What is this?

There are three situations where this can be found.

1. Pt with high ___ who are on ___ (mode)
2. Large Tv creates ___
3. Patients on ___ (mode)

Answer 20

Missed Trigger

Question 21

Answer 21

Air leak

Question 22

Answer 22

Increased Raw

Question 23

What is this and how do you treat it?

Answer 23

Flow starved

Increase the flow

Question 24

Answer 24

Needs more PEEP

Note that the volume/press loop is set at a PEEP of 0 but there is no volume change until a pressure of 10 is reached. This creates the flat portion at the bottom of the curve. (Like a flat football)

Question 25

Answer 25

Increased Raw

(It looks kinda flat.)

Question 26

Answer 26

Auto-PEEP

Question 27

Answer 27

Normal Spontaneous Breath

Question 28

Answer 28

Normal, assisted breath

Question 29

What is the most common answer to unusual ventilator troubleshooting questions?

Answer 29

Increase the flow

Question 30

What’s this called?

How is the patient causing this?

Answer 30

Flow Starved

Pt breathing faster than the machine

Question 31

What is the patient doing?

Why is he doing it?

Answer 31

I time too long.

Pt is trying to exhale

Question 32

If the ventilator graphic shows an air leak, what’s the first thing you should do?

Answer 32

Manually ventilate the patient.