Mve (L):

Minute Volume is the total exhaled volume for the last 60 seconds as calculated using the last 8 breaths.

• The Mve will constantly change.

• The value is recalculated and displayed at the end of exhalation phase.

• When the unit is first turned on or resumed after pausing or making a mode selection, the Mve calculation will be based on every exhaled breath until the 8th exhaled tidal volume.

• Once the 8th exhaled tidal volume is achieved the calculation will resume as stated above.

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Vte (ml):

​Tidal Volume is the volume exhaled by the patient in Mandatory, Spontaneous or Pressure Support Ventilation (PSV) breaths.

• Vte is calculated based on the entire expired flow displayed as volume.

• Vte is updated at the beginning of the next inspiratory phase (at the end of the exhalation phase).

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Paw AV (cm H2O):

​Paw AV is the average patient airway pressure measured during the last 60 seconds.

• This measurement is monitored by the ventilator at all times and modes.

• The number on display will be updated every 15 seconds.

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Paw Peak (cm H2O):

Peak airway pressure is the maximum pressure measured during the inspiratory phase.

• The number on the screen represents the maximum pressure during the mandatory inspiratory phase of Assist Control (A/CV), Spontaneous Intermittent Mandatory Ventilation (SIMV), BiLevel (BiLVL), and CPR modes.

• In CPAP mode the maximum pressure during the spontaneous inspiratory phase is displayed.

• The number is updated at the end of each inspiratory phase.

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Rate (BPM):

Rate (BPM) is the rate at which the breaths are delivered in one minute.

• The monitored breath rate is calculated by measuring the time interval (Tb means inspiration + expiration time) between 2 breaths.

• Rate (BPM) equals 60 / Tb.

• The number is updated after each breath.

• The number is displayed for both mandatory and spontaneous breathing phases.

  •  Mandatory means ventilator controlled.

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Ventilation Waveform Display:

The ventilation waveform display provides a breath-by-breath visual representation of the breathing cycle. By pressing the Waveform Selection Button the waveform display will switch between pressure and flow ventilation waveforms on the screen.