9
RoVent® Troubleshooting
Problem
Possible Cause
Tube open to atmosphere
The highest measured
pressure in a breath cycle is
under 25% of the target and
the tidal volume is over target.
• Part of the tubing between the INS and EXP ports is open,
disconnected or leaking.
• There is a large mismatch between the set or calculated tidal
volume and the required tidal volume, or between the set
and actual body weights.
Tube blocked
The highest measured
pressure in a breath cycle is
under 25% of the target and
tidal volume is under target.
• The endotracheal tube is not seated correctly.
• There is a kink, blockage or foreign matter in the inspiratory
or expiratory lines.
Exhaust blocked
The breath pressure fails to
drop during the expiratory
phase of a breath.
• The cap is on the EXP port.
• The expiratory valve has failed.
Alarm Messages
Out of regulation
Over five consecutive
breaths, peak pressure was
more than 25% or less than
75% of your target.
• Requested Tidal Volume is too high for Pressure and RR .
Large rise in TV
Over the last four breaths,
there was an increase of more
than 25% in average tidal
volume compared to that of
the previous 16 breaths.
• Part of the tubing between the INS and EXP ports is open,
disconnected or leaking.
Large drop in TV
Over the last four breaths,
there was a decrease of more
than 25% in average tidal
volume compared to that of
the previous 16 breaths.
• There is a kink in the tubing.
• There is foreign matter in the tubing or in the exhaust valve.
• The exhaust outlet is blocked.
• The endotracheal tube is not seated correctly.
Deadspace calib
Dead space calibration
produced a negative tidal
volume.
• Deadspace calibration is incorrect for current tubing setup.
C
F
