HFOV

Question 0

3100 B

Answer 0

For adults and pediatrics over 35 kg

Paw: 5-55 Amplitude: 8-130 Frequency: 3-15Hz Flow rate: 0-60
I-time %: 30-50

Question 1

3100 A

Answer 1

For neonates and pediatrics less than 35kg

Paw: 3-45 Amplitude: 8-110 Frequency: 3-15Hz Flow rate: 0-40
I-time %: 30-50

Question 2

Alarms

Answer 2

Set max and min Paw alarm
-red LED will illuminate if either parameter is reached, vent. will continue to operate but will alarm until adjusted or new limit set

Paw 50cmH2O alarm
-When activated, the dump valve opens, and the oscillator will stop. Will not resume until fixed by pressing and holding reset while adjusting MAP to above 20% of set on “set max paw”

Overheated alarm
-When the coil temperature exceeds 150-175 degrees C, does not stop the oscillator but ventilation should be stop and the coil cooled to prevent piston failure.

Question 3

3100 A and 3100 B differences

Answer 3

• 3100B is for adults, and has greater power, flow, pressure
• No center piston control like 3100A, no mean pressure limit control like 3100A
• Set max paw control setting is 59 on the 3100B and the ventilator will no longer shut down if this value is reached. Vent will depressurize the limit until MAP falls to 12 below the set mean.

Question 4

Control changes effect on Vt and oxygenation

Answer 4

1Hz=60bpm

• Increasing power increases amplitude which increases tidal volume. Increasing tidal volume decreases CO2
• Increasing %I-time will increase Vt and MAP, which decreases CO2 and improves oxygenation
• Decreasing frequency will increase tidal volume and decrease CO2

The primary control of CO2 is the power setting
The secondary control of CO2 is the frequency
MAP determines oxygenation