Puritan Bennett 560 Ventilator User's Manual - Covidien

B Modes of Ventilation
B.1 Modes of Ventilation
This chapter is a general description of the various modes of ventilation and breath types available with the
Device name.
Note:
The default ventilation mode setting is P A/C; for more information, see below.
B.1.1 Assist/Control (A/C) Modes
When set to an Assist/Control mode, machine-initiated breaths are delivered at a clinician-set volume or pressure,
inspiratory time, and rate. If the patient triggers a spontaneous breath between machine breaths, the
ventilator will deliver a breath based on the volume or pressure settings and inspiratory time.
Whether initiated by the patient or the ventilator, all breaths are delivered at the same preset volume or pressure
and inspiratory time.
The names of the Assist/Control modes are:
• V A/C, if the breaths are based on a volume setting
• P A/C, if the breaths are based on a pressure setting
B.1.2 SIMV Modes
When set to a SIMV (Synchronised Intermittent Mandatory Ventilation) Mode, machine-initiated breaths are
delivered at a clinician-set volume or pressure, inspiratory time, and rate. These mandatory breaths are synchronised
with patient effort. If the patient triggers a spontaneous breath between machine breaths, the ventilator
will deliver a spontaneous breath, which is pressure-supported.
CPAP spontaneous breaths are not available in SIMV modes.
The names of the SIMV modes are:
• V SIMV, if mandatory breaths are based on a volume setting
• P SIMV, if mandatory breaths are based on a pressure setting
B.1.3 CPAP Mode
In CPAP, the ventilator maintains a constant level of pressure in the patient’s airway.