Dräger Infinity M540 - ST

Troubleshooting
520 Instructions for use – Infinity Acute Care System – Monitoring Applications VG6.n
ST
Priority Message Parameter field Problem Solution
! Cannot analyze
ST
The parameter
value is replaced
by ***
The algorithm
cannot determine
ST values due to
artifact, the
absence of normal
beats, or invalid
leads.
– Perform a relearn
(see page 228).
– Check electrodes; re-
apply if necessary.
– Make sure the
patient’s skin is
properly prepared.
– Isolate the patient
from auxiliary
equipment if
possible.
– Inspect and replace
faulty cable(s) and
wire(s).
– Reapply gel on
reusable electrodes
and reapply them or
replace new
disposable
electrodes.
– Reapply the
electrode(s). Make
sure the patient’s
skin is properly
prepared.
– If a lead or electrode
cannot be replaced,
select another ST
lead for processing.
!! ST > (alarm limit)
ST < (alarm limit)
Parameter value The parameter
value is
above/below the
set upper/lower
alarm limits.
– Check the patient
and treat if
necessary.
– Change the alarm
limits.