Mindray BeneView T1, Operator'S Manual

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NOTE

When [Paced] is set to [No], the pace markers are not shown on the ECG wave, and the options of [Pacer
Reject] are inactivated.
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.5.9 Adjusting the Minimum QRS Detection Threshold (For Mindray ECG Algorithm)
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,
1. In the [ ECG Setup ] menu, set [ Filter ] to [ Monitor ].
2. Select [ Others >> ]
→
[ Minimum QRS Threshold >> ] to enter the [ Minimum QRS Threshold ] menu.
3. Select the up or down arrow to adjust the QRS threshold. Selecting [ Defaults ] resets the QRS threshold to the
default value (0.16 mV).
4. Select [ Confirm ] to make the changes effective.
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.
NOTE

The minimum QRS detection threshold can only be adjusted when the ECG filter is set to Monitor.
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.5.10 Enabling Smart Lead Off
To switch on/off the smart lead off function, select [ Others >> ] from the [ ECG Setup ] menu; select [ Smart Lead Off ] and
toggle between [ On ] and [ Off ] from the popup menu.
When the smart lead off function is set on and there is a “lead off” in the lead of the first ECG wave, if another lead is
available, this available lead automatically becomes that lead. The system will re-calculate HR and analyze and detect
arrhythmia. When the “lead off” condition is corrected, the leads are automatically switched back.
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.5.11 Setting the Alarm Level for ECG Lead Off Alarms
Select [ Alarm Setup >> ] from the [ User Maintenance ] menu. You can set [ ECGLeadOff Lev. ] from the popup menu.
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.5.12 Adjusting QRS Volume
QRS sounds are produced based on the alarm source. To adjust the QRS volume, select [ Others >> ] from the [ ECG Setup ]
menu; select [ QRS Volume ] from the popup menu and select the appropriate setting. When valid SpO
2
measured value
is available, the system adjusts the pitch tone of QRS sound based on the SpO
2
value.