10-6
Cardiac Output (CO) Solutions
Problem Possible Causes Action/Solution
NO CATH message. Catheter not connected. Confirm catheter connected
properly.
NO PROBE message. Either injectate probe or bath
temperature probe not
connected.
Confirm both probes connected
properly. Without probe,
monitor assumes 0
o
C injectate
temperature.
∧ ∧RANGE∧ ∧ message.
Blood temperature change
greater than 4
o
C at beginning of
run.
Verify initial blood temperature
change not greater than 4
o
C.
∨ ∨RANGE∨ ∨ message.
Injectate probe bath temperature
less than 10
o
C within 30
seconds after start of run.
Increase initial bath temperature.
<<RANGE>> message. Cardiac output greater than
19.99 liters/minute or less than
0.01 liters/minute.
Reduce input signals if CO too
high. Increase input signals if
CO too low.
BASELINE message. Fluctuations in patient blood
temperature or instrumentation
problems.
Check cable connections.
Repeat test with another cable if
necessary.
NO ECG message.
Either ECG cardiotach channel
is in check lead or insufficient
beats detected.
Verify ECG leads connected
properly. System will proceed to
calculate CO, but REF and other
parameters will not be
computed.
Recorder Solutions
Problem Possible Causes Action/Solution
Paper jams. Improper paper or an obstruction
in paper exit area.
Confirm proper paper is
installed.
Remove paper. Clear paper path.
Reinstall paper. Retry.
No recording on paper. Paper not installed properly.
Verify paper is properly
installed. Confirm correct paper
being used.
Battery Solutions
Problem Possible Causes Action/Solution
Battery cycle time less than
expected.
Batteries not adequately
charged.
Battery installed incorrectly.
Battery old or damaged.
Verify batteries are at least 90%
charged.
Make sure batteries installed
correctly.
Replace battery.
Batteries will not charge and
Battery Charging indicator is
OFF.
AC power not connected
properly.
Confirm front panel AC ON
indicator is on.
Verify unit connected to AC
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