User Manual
ST ANALYSIS
170 PatientNet Operator’s Manual, v1.04, 10001001-00X, Draft
All information contained herein is subject to the rights and restrictions on the title page.
Configuring ST Alarms
This section includes ST alarm configuration instructions. For ST alarm information
other than configuration, see “Alarm Management” starting on page 105.
ST alarm settings are made on the ST Alarm Config screen (fig. 85).
Press the ST Config button on the Patient Settings screen then the ST Alarm button
on the ST Configuration screen to display this screen.
Fig. 85. ST Alarm Config screen
Setting the ST Elevation and Depression Thresholds
When a patient’s ST elevation exceeds the ST elevation threshold or falls below the
ST depression threshold, an ST alarm is generated. Set thresholds as follows:
1. Highlight a lead in the list; the More button displays additional leads in the
list.
2. Press the Elev button.
3. Use the arrow buttons to the right of the vertical bar to adjust the ST elevation
threshold from -10 mm to +10 mm in 0.5 mm increments. The value you select
appears in the second column of the blackboard. The default is +2.0 mm.
4. Set the ST depression threshold.
5. Press the Depr button.
6. Use the arrow buttons to the right of the vertical bar to adjust the ST depres-
sion threshold from -10 mm to +10 mm in 0.5 mm increments. The value you
select appears in the third column of the blackboard. The default is -1.0 mm.
CAUTION: When ST Ref is set to Lrn (See “Reference Level For ST Measurement” on
page 172.), the elevation threshold must be set to a positive value and the
depression threshold must be set to a negative value.
7. If you wish to use these ST elevation and depression threshold settings for all
leads in the list, press the All Leads button.