Treaton MV200, User Manual

Page: 107 / 222

4.17 Alarms
4-59
4.17.1 High priority alarms
Table 4.15. High priority alarms
No Alarm message Alarm conditions
Reaction of ventilator,
operator’s actions
Physiological alarms
1 Disconnection
(Disconnection)
Disconnection
Pressure drop in the patient’s
breathing circuit
Check the tightness of the breathing circuit
connections. Check the tightness of the
breathing circuit and expiration valve of the
device. Check humidifier.
If necessary replace the breathing circuit.
Alarm is disabled at the restoring pressure in
the first normal breathing cycle.
2 Apnea Press
encoder
(Apnea)
Apnea
No spontaneous breathing of
the patient at the period of the
set apnea time Tapnea
This alarm may occur in the SIMV,
CPAP+PS and BiSTEP, NIV modes. Check
the patient. Turn on the mandatory mode or
increase the frequency of mandatory breaths
in SIMV modes. The alarm is automatically
disabled when the patient makes two se-
quential unassisted breathing cycles.
3 Occlusion
(Occlusion)
Occlusion
Achieving of maximum permiss-
ible inspiratory pressure at the
volume of inspiration less than
50 %
Check for breathing circuit occlusion or
clamping. Check inspiration/expiration filters
for contamination, if necessary clean.
Alarm is disabled after 2 consecutive normal
breathing cycles.
4 Low Vexp
(Low Vexp)
Low Vexp
Expiratory volume is below the
set bottom threshold
Check the patient for adequate ventilation
and circuit for hermiticity. If necessary adjust
the bottom alarm threshold. Alarm is dis-
abled when expiratory volume exceeds the
bottom alarm threshold.
5 High Vexp
(High Vexp)
High Vexp
Expiratory volume is above the
set top threshold. Without lea-
kage this alarm is equal to high
inspiration volume alarm
Check the patient for adequate ventilation
and circuit for hermiticity. If necessary adjust
the top alarm threshold. Alarm is disabled
when expiratory volume is below the top
alarm threshold.
6 High minute vo-
lume
(High MV)
High minute volume
Minute expiratory volume is
above the set top threshold.
Check the condition of the patient in for the
hyperventilation. If necessary reinstall the
alarm limit of high minute volume.
Increase inspiratory trigger threshold if there
is suspicion of auto triggering. Alarm is dis-
abled when minute volume is below the thre-
shold.
7 Low minute vo-
lume
(Low MV)
Low minute volume
Minute expiratory volume is be-
low the set bottom threshold.
Check the patient for adequate ventilation
and circuit for hermiticity. If necessary in-
crease the frequency, tidal volume, support
pressure or trigger sensitivity.
8 Pmax is reached
( Р max reached)
Pmax is reached
Pmax set by user is achieved.
Check the patient. Check breathing cir-cuit
and flow sensor tubes for the in-flection and
occlusion. Alarm disappears at the first nor-
mal breathing cycle with the real value of PIP
below Pmax specified by the user.