624074/07 5-17
5.6.2 TRC: Setting tube resistance compensation
WARNING
• Always use the correct tube type and size
setting to avoid endangering the patient. To
prevent possible patient injury due to inappro-
priate compensation, make sure to set these
appropriately.
• TRC can induce autotriggering. If autotrigger-
ing occurs, first check the patient, breathing cir-
cuit, and other settings as possible causes
before lowering the Compensate setting or dis-
abling TRC.
NOTE:
• TRC is intended for use with spontaneously breath-
ing patients.
• TRC is disabled during heliox administration.
• When TRC is enabled, the displayed Ppeak can be
higher than the set PEEP/CPAP plus Pcontrol/Psup-
port. This is due to the additional pressure required
to work against the tube resistance. Observe closely
at the calculated tracheal pressure, which is simulta-
neously displayed as an orange-colored waveform.
• The tracheal pressure waveform displayed is calcu-
lated from the proximal flow and pressure signals
rather than measured.
• 100% compensation means that all resistance due
to the tube itself is compensated. Internal resistance
(for example, from secretions) and the external
resistance (for example, from a tube kink) is not
compensated.
Description: To reduce the patient’s work of breathing while on
the HAMILTON-G5, the ventilator’s tube resistance compensa-
tion (TRC) feature offsets the flow resistance imposed by the
tracheal (ET) or tracheostomy tube.
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