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6.5.2 Apnea Ventilation
Apnea ventilation is a backup ventilation mode initiated when the ventilator detects patient
apnea in CPAP/PSV, V-SIMV, P-SIMV, PRVC-SIMV, DuoLevel, and APRV modes. Apnea
ventilation can exit only under the following circumstances: patient’s spontaneous breathing
has been detected continuously twice, ventilation mode is switched over, or apnea ventilation
is switched off (in SIMV modes).
This ventilator provides two types of apnea ventilation mode: volume-controlled apnea
ventilation and pressure-controlled apnea ventilation. Both volume-controlled apnea
ventilation and pressure-controlled apnea ventilation are supported in case of invasive
ventilation. Only pressure-controlled apnea ventilation is supported in case of non-invasive
ventilation.
Volume-controlled apnea ventilation means that tidal volume, breathing frequency, and
inspiration time in the apnea ventilation cycle can be set in the mode supporting apnea
ventilation. After entering apnea ventilation, the ventilator executes PRVC ventilation with
the set tidal volume, breathing frequency, and inspiration time in the apnea ventilation cycle
(other parameter’s setting values are unchanged).
Pressure-controlled apnea ventilation means that inspiration pressure, breathing frequency,
and inspiration time in the apnea ventilation cycle can be set in the mode supporting apnea
ventilation. After entering apnea ventilation, the ventilator executes P-A/C ventilation with
the set inspiration pressure, breathing frequency, and inspiration time in the apnea ventilation
cycle (other parameter’s setting values are unchanged).
CAUTION
You are suggested to initiate apnea ventilation in SIMV mode.
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