Mindray Passport 12 - 8.2.7 IBP_C.O. Module Assembly Parts

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.