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Waveform
During the delivery of a volume breath, flow can be delivered in one of two user-
selectable waveforms: Square Wave or Decelerating Wave. The default waveform
is Decelerating Wave.
Square Wave (Square)
With this waveform selected, the ventilator delivers gas at the set peak flow for the
duration of the inspiration.
Decelerating Wave (Decel)
With this waveform selected, the ventilator delivers gas starting at the peak flow and
decreasing until the flow reaches 50% of the set peak flow.
Sigh
The ventilator delivers sigh volume breaths when this setting is on. A sigh volume breath
delivers every 100th breath in place of the next normal volume breath.
Sigh breaths are only available for volume breaths in Assist and SIMV modes for adult
and pediatric patients.
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