6 ECG, Arrhythmia, ST and QT Monitoring
123
EASI Electrode Placement
ECG and Arrhythmia Alarm Overview
The ECG and arrhythmia alarms available depend on which measurements are switched on, and the
arrhythmia option enabled for your monitor.
• Cardiotach alarms are available when HR is on and the active alarm source is ECG, but
Arrhythmia is switched off
• Basic arrhythmia alarms are available when Arrhythmia is switched on
• Enhanced arrhythmia alarms are available when Arrhythmia is switched on and the Enhanced
Arrhythmia option has been enabled for your monitor
1 E (V) - on the lower sternum at the level of
the fifth intercostal space
2 A (LL) - on the left midaxillary line at the
same level as the E electrode
3 S (LA) - on the upper sternum
4 I (RA) - on the right midaxillary line at the
same level as the E electrode
5 N - reference electrode - can be anywhere,
usually below the sixth rib on the right hip
Alarm Description Arrhythmia Configuration
Arrhythmia
Off
Basic
Arrhythmia
Enhanced
Arrhythmia
*** Asystole No beat detected for a period > the
asystole threshold (2.5 to 4.0 seconds)
xxx
*** Vent Fib/Tach Fibrillatory wave (sinusoidal wave
between 2 - 10 Hz) for 4 consecutive
seconds
xxx
*** VTach A run of consecutive beats labeled as V
with run length ≥ the V-Tach Run limit
and ventricular HR > V-Tach HR limit
xx
*** Extreme Tachy Heart Rate > the Extreme Tachy limit x x x
*** Extreme Brady Heart Rate < the Extreme Brady limit x x x
** HR High Heart rate > the high HR limit x x
(see note)
x
(see note)
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