35
Tr
oubleshooting
Internal Fault
If an internal fault is detected, the following
message is displayed on the screen:-
Internal Fault AAA:XXXX
Refer To Service Manual
Recommended Action:
The unit must be
referred for servicing and/or repair. Refer to
contact details at the rear of this manual.
Systolic Pressure Out of Measureable Range
If the pressure in an occlusion chamber is
insuffi cient to completely occlude bloodfl ow, the
systolic pressure value will be replaced by:-
“- - -”
and the corresponding ABI value will be
replaced by:
“- .- -”
For the ankles, this indicates a possible
incompressible artery, or that systolic pressure is
greater than 205 mmHg.
For the arms, this indicates that systolic
pressure may be less than 80 mmHg, or greater
than 230 mmHg.
120
196
124
- - -
L
R
1.10
ABI
-.--
- - -
136
- - -
134
L
R
-.--
-.--
ABI
Recommended Action:
Follow local clinical
protocols for patient referral.
Unable to Calculate Systolic Pressure
If the software algorithms are unable to calculate
a systolic pressure, the systolic value will be
replaced by:
“ ? ”
and the corresponding ABI value will be
replaced by:
“- .- -”
If this occurs on both ankles, the results display
will be replaced by the “CANNOT MEASURE”
screen.
120
?
124
134
L
R
1.08
-.--
ABI
CANNOT MEASURE
REPEAT TEST
Recommended Action:
A possible cause is
patient movement or incorrectly fi tted cuffs, so
a repeat test can be performed after checking
cuffs and asking the patient to remain as still as
possible.
Note:
When performing repeat tests on the
same patient, allow at least 5 minutes for
stabilisation between tests.
Summary of Contents for dopplex ABIlity
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