S10/S12/S10A/S12A Patient Monitor User’s Manual
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as the baseline. The baseline value will be used to calculate the QTc value.
After the new QT baseline is set, the original baseline will be discarded. The
baseline will be cleared when the patient is released.
Select 【Show Baseline】 or 【Hide Baseline】 to show or hide QT baseline
waveform.
CAUTION：
Changing QT baseline will affect ΔQTc value and ΔQT alarm.
8.8.6. QT Setting
8.8.6.1. Setting the QT Alarm
QT alarm is set as follows:
1. Select QT parameter area to enter 【QT】 menu.
2. Select 【Alarm】 submenu.
3. Set properties of QTc and QTc alarm.
8.8.6.2. Selecting QTc Formula
The monitor uses Hodges formula by default to correct QT interval according to heart
rate. If you need to select other QTc formulas, the steps are as follows:
1. Select 【 Main Menu 】 quick keyfrom 【 System 】 column to select
【Maintenance】input maintenance passwordEnter.
2. Select【Module】submenu【ECG】submenu.
3. Select【QTc Formula】.
Hodges:
QTc 1.75 HeartRate 60
Bazett: QTc QT
Fridericia: QTc QT
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