Page 4-4 LTV
®
Series ventilator Operator’s Manual
p/n 10664, Rev. Y
Apnea Backup
The LTV
®
Series ventilator provides an Apnea Backup mode of ventilation. Apnea Backup ventilation
begins when the time since the last breath start is greater than the set Apnea Interval.
When an apnea alarm occurs:
• If an inspiration is in progress, the ventilator cycles to exhalation.
• The ventilator begins Apnea Backup ventilation in the Assist/Control mode according to the
current control settings. The active controls are displayed at full intensity, and all other controls
are dimmed.
The breath rate for Apnea Backup mode is determined as follows:
• If the set Breath Rate is ≥ = 12 bpm, the Apnea breath rate is the set Breath Rate.
• If the set Breath Rate is < 12 bpm and the set Breath Rate is not limited by other control settings,
the Apnea breath rate is 12 bpm.
• If the set Breath Rate is limited to <12 bpm, the Apnea breath rate is the highest allowed rate.
The ventilator exits Apnea Backup mode and returns to the previous mode of ventilation when the
operator resets the Apnea alarm or when two consecutive patient-initiated breaths occur.
The Apnea Interval may be changed using the Extended Features menu.
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