Passport 12/Passport 8 Operator’s Manual 8-9
8.5.14 Adjusting the Minimum QRS Detection Threshold (For Advanced ECG Algorithm
Only)
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 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 [Default] 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].
8.5.15 About the Defibrillator Synchronization
A defibrillator synchronization pulse (100 ms, +5V) is output through the Multifunctional connector every time the
monitor detects an R-wave.
To use the defibrillator synchronization function, connect the monitor and the defibrillator with a synchronization cable.
WARNING
Improper use of a defibrillator may cause injury to the patient. The user should determine whether to
perform defibrillation or not according to the patient’s condition.
To Next Page
Loading...
Need help?
General
