Welch Allyn Holter System - User Manual User Manual
Page 62
58
Directions for Use
Welch Allyn Holter System
Table 22. Miscellaneous Problems
Supraventricular errors
Excessive noisy trace causes false interpolated
beat
Prematurity threshold in clinical settings set too
low.
Confirm that Form Classifications are correct and edit any
that are not.
Improve patient hookup prep.
Perform beat edit to correct beat classification
Incorrect Heart Rate
Excessive noisy trace causes false interpolated
beat artificially elevating Heart Rate
Low amplitude signal cause no detection - thus
creating an artificially low Heart Rate
Improve patient hookup prep.
Perform beat edit to correct beat classification.
Brady errors
Low amplitude signal causes no detection
Brady threshold set too high
Improve patient hookup prep.
Perform beat edit to correct beat classification.
Check that Brady threshold set to desired threshold.
See
Tachy errors
Excessive noisy trace causes false interpolated
beat
Tachy threshold set too low
Improve patient hookup prep.
Perform beat edit to correct beat classification.
Check that Tachy threshold set to desired threshold.
See
ST Episodes errors
Isoelectric Point positioned on P-wave
ST Level point positioned on T-wave
Delete Incorrect ST Episode strips from report.
Excessive Form Count
Excessive noisy traces causes distortion to QRS
creating different clusters
Improve patient hookup prep.
Evaluate whether a specific channel has a high degree of
artifact and if so re-analyze turning off that channel.
Note: re-analysis will lose any previous performed
editing.
Condition
Cause
Action
Condition
Cause
Action
Failure to upload report from
recorder
SD Card Reader not plugged in
SD Card Reader location has changed
SD Card is corrupt
SD Card upload was terminated before
completion
Insert SD Card reader into USB port.
Double-click over SD Card icon with question mark.
This launches a dialog to search for SD card drive.
Using Windows Explorer, format the SD using FAT and
make sure no volume label is included.
Restart the application to allow the report to be re-
uploaded.
Test Startup (Wireless) -
Cannot find recorder
USB Dongle not plugged in
Recorder out of range > 5 feet
Recorder does not have fresh batteries
Radio Interferences from other signal sources
Wireless Stack incorrectly configured.
Insert USB Bluetooth dongle.
Recorder needs to be within 5 feet of the USB dongle.
Replace battery in the recorder.
For Windows 2000 Operating system confirm that the
Wireless Stack is set to Widcomm. See Service
Personnel Only section under
page 36.
For Windows XP with no other Bluetooth drivers installed,
confirm that Wireless stack is to set to Microsoft.
For Windows XP systems that have Bluetooth drivers
installed confirm that wireless stack is set to Widcomm.
Test Startup (Wireless) - Fails
to enter preview mode
Communication failed with recorder.
Recorder out of range > 5 feet
Click Start button to try to connect again.
Move recorder to within 5 feet of the USB dongle.
Project activation fails
(Internet)
Internet access is blocked
Request temporary internet access from your IT staff. (Only
required during activation.)
Project activation fails
(Manual)
Invalid Manual release codes
Carefully re-type release code.
Contact Welch Allyn customer support.