Operator's Manual

ECG Monitoring Monitoring with the TM80/TM70 at the CMS
12 - 10 TM80/TM70 Telemetry Monitor Operator’s Manual
12.7.3 Changing Pacer Settings
1. From the [ECG] tab, select the [Pacer] section.
2. Set the desired items.
12.7.4 Adjusting the Minimum QRS Detection Threshold
To avoid false asystole alarms when the R wave amplitude is low and missed asystole
alarms during ventricular standstill (tall P waves, but no QRS), a means to manually
adjust the minimum QRS detection threshold is provided.
To adjust the QRS detection threshold, follow this procedure:
1. From the [ECG] tab, select the [QRS Threshold] section.
2. Select the arrow buttons to adjust the QRS threshold. Selecting [Defaults] resets
the QRS threshold to the default value (0.16 mV).
Options or Buttons Description Default Setting
Paced The option is not configurable at the CMS.
The paced status can be set at the TM80/
TM70 only. See "Checking the Paced Sta-
tus" on page 7 - 11 for details.
None
Pacer Reject Configures whether or not to reject the
pace pulses.
■ On: the pace pulses are not
counted as extra QRS complexes.
■ Off: the pace pulses are not
rejected.
Off
This option is only available when [Paced] is set to [Ye s ] .
CAUTION
• The setting of QRS threshold can affect the sensitivity of arrhythmia, ST,
QT/QTc detection, and heart rate calculation.
• If QRS amplitude is low, the monitor might not be able to calculate heart
rate and false asystole may occur.