Mindray BeneVision N1 User Manual

BeneVision N1 Patient Monitor Operator’s Manual 7 - 21
7.8.5 Saving the Current QTc as Baseline
In order to quantify changes in the QTc value, you can set a QTc baseline. If no baseline has been set for this
patient within the first five minutes after getting valid QT values, the monitor will automatically set a baseline. To
set the current values as baseline, follow this procedure:
1. From the
QT View, select Set Baseline.
2. From the pop-up dialog box, select
OK. This baseline will then be used to calculate QTc.
If you set a new baseline the previous baseline is discarded.
From the
QT View, you can also perform the following operations:
■ Select the left or right arrow to select a lead label to highlight corresponding waveform.
■ Select Display Baseline or Hide Baseline to display or hide the baseline waveform.
CAUTION
• Updating QTc baseline affects the ΔQTc value and alarm.
7.8.6 Changing QT Settings
7.8.6.1 Setting QT Alarm Properties
To set QT alarm properties, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the
ECG dialog.
2. Select the
QT tab→ select the Alarm tab.
3. Set QTc and QTc alarm properties.
7.8.6.2 Selecting Leads for QT Calculation
You can select one lead or all leads for QT calculation. To do so, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the
ECG dialog.
2. Select the
QT tab→ select the Setup tab.
3. Set
QT Leads. All is selected by default. This means all leads are used for QT calculation.
7.9 ECG Relearning
Changes in ECG beat morphology could result in incorrect arrhythmia alarms and/or inaccurate heart rate. ECG
relearning allows the monitor to learn the new dominant beat morphology and thus reduce false arrhythmia
alarms and inaccurate HR values. Once learning is complete, the dominant QRS complex is stored as a reference
template. The reference template is used as the normal morphology of that patient and it is compared with
incoming beats to identify possible arrhythmias.
7.9.1 Auto ECG Relearning
Auto arrhythmia relearning happens in the following situation:
■ The ECG lead type or lead label is changed.
■ ECG leads are off and are not reconnected within 60 seconds.
■ The patient‘s paced status is changed.
7.9.2 Initiating an ECG Relearning Manually
If you suspect that false arrhythmia alarms are presented, you may need to manually initiate an ECG relearn. To
do so, follow this procedure:
1. Select the ECG numeric area or waveform area to enter the
ECG dialog.

Mindray BeneVision N1 Specifications

General

Brand	Mindray
Model	BeneVision N1
Category	Medical Equipment
Language	English