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Trilogy200 clinical manual
20
Breath Types
There are four breath types that apply to the Volume Control and
Pressure Control ventilation therapy modes:
• Spontaneous
• Mandatory
• Assisted
• Sigh
Spontaneous Breath
A Spontaneous breath is triggered by the patient. Breaths are
initiated by the patient’s inhalation eort, and air delivery is
controlled based on the current pressure or volume setting. Breaths
are terminated by either the ventilator settings or by the patient’s
exhalation eort, depending on the mode selected.
Mandatory Breath
A Mandatory breath (or machine breath) is completely controlled by
the ventilator. The ventilator controls both the beginning (triggering)
and end (cycling) of the inspiratory phase.
Assisted Breath
An Assisted breath is controlled by both the patient and the ventilator.
Breaths are initiated by the patient’s eort and air delivery is controlled
by the current pressure or volume settings. Volume Assisted breaths
will deliver the prescribed Tidal Volume within the prescribed
Inspiratory Time. Pressure Assisted breaths will deliver the prescribed
Inspiratory Pressure for the prescribed Inspiratory Time. Breaths are
terminated when the Inspiratory Time setting has been reached.
Sigh
A Sigh breath is a breath where 150% of the prescribed volume
is delivered. The device will deliver this breath once every 100
Mandatory or Assist breaths when the Sigh setting is enabled. Sigh
breaths are only available in volume modes of ventilation.