HFO Flashcards

1
Q

Criteria for possible exit to HFV?

A
  • RR > 80
  • Vt > 5
  • PIP > 25
  • MAP > 23 and FiO2 >0.40
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2
Q

Trigger, Limit, and cycle for the HFO mode?

A
  • Time triggered
  • Pressure limited
  • Time Cycled
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3
Q

Generally, what are traits of HFO?

A
  • Very high rates (500-1200bpm)
  • Low Vt (neos 1.8-2ml/kg)
  • High Mean Airway Pressures (PEEP)
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4
Q

HFO control settings?

A
  • Mean Airway Pressure (PEEP)
  • Amplitude (Vt)
  • % inspiratory Time (33%)
  • Frequency (Hz) (Rate1 Hz = 60 Breaths/min)
  • Bios Flow
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5
Q

What do waveforms look like for HFO?

A

Really fast and squiggly

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6
Q

Initial Settings for HFO when trying to Optimal Lung Recruitment ?

A
  • Set MAP 2-3 cmH2O higher than MAP on conventional vent
  • make 1-2 cmH2O MAP changes until oxygenation improves
  • Set RR as needed (10hz for term, 12-15 for preterm)
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7
Q

Initial Settings for HFO when aiming for Low Volume?

A
  • Set MAP equal to MAP on conventional Ventilator
  • Set frequency as needed (higher frequencies are more lung protective)
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8
Q

How do you wean a pt off of HFO?

A
  • Ensure FiO2 < 0.40 before weaning MAP
  • Reduce MAP by 1-2cmH2O until at 8-10cmH2O
  • Wean amplitude by 2-4
  • Do not wean frequency
  • Switch to conventional ventilation when MAP is 8-10cmH2O and amplitude is 20-25
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9
Q

Making adjustments: When would you increase/decrease HFO settings to correct poor ventilation?

Need to add slide 11

A

To correct poor ventilation you can either increase amplitude or decrease frequency

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10
Q

Making adjustments: When would you increase/decrease HFO settings to correct over ventilation?

A

Decrease amplitude and Increase Frequency

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11
Q

Making adjustments: When would you increase/decrease HFO settings to correct poor oxygenation?

A

Increase FiO2 and Increase MAP

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12
Q

Making adjustments: When would you increase/decrease HFO settings to correct over oxygenation?

A

Decrease FiO2 and Decrease MAP

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13
Q

What is the RR to start HFV?

A

More then 80 breaths

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14
Q

What is the Vt to start HFV?

A

Greater then 6

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15
Q

What is the PIP to start HFV?

A

Greater then 25

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16
Q

What is the MAP to start HFV?

A

Greater then 12

17
Q

What mode should HFO be in?

  • Triggers, limits, and cycle for HFO
A

Time triggered, pressure limited, time cycled

18
Q

Trigger for HFO?

19
Q

Limit for HFO?

20
Q

Cycle for HFO?

21
Q

What are the rates for HFO?

A

500-1200bpm

22
Q

What should MAP be in HFO?

A

MAP should be equal to PEEP

23
Q

What should MAP be weaned to for HFO?

24
Q

What should amplitudes be weaned to for HFO?

25
What should you wean frequency be weaned to?
Do not wean frequency
26
What are the tidal volumes (Vt) for HFO?
1.8-2 mL/kg