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Understanding the Arrhythmia Display
Arrhythmia Status Messages
The monitor displays two types of status messages:
• Rhythm Status Messages -- to indicate the patient's rhythm.
• Ectopic Status Messages -- to indicate the presence of ectopic beats.
These status messages are shown on the right hand side of the primary ECG wave. They are updated
every second, with the exception of the Sinus and Supraventricular (SV) rhythm messages.
The Sinus and SV rhythm messages are updated based on the current heart rate, taking into account
the patient category (adult, pediatric, or neonatal). For the message to change from one rhythm status
to another, the HR must be in the new range for five beats.
If you have basic arrhythmia capability, you will get only messages for the alarms provided with this
level.
Rhythm Status Messages
The label B or E indicates basic (B) or enhanced (E) arrhythmia capability.
Rhythm Status Message Description
ASYSTOLE
VENT FIB/TACH
V-TACH
SUSTAINED V-TACH
VENT RHYTHM
VENT BIGEMINY
VENT TRIGEMINY
PACED RHYTHM
IRREGULAR HR
SINUS BRADY
SINUS RHYTHM
SINUS TACHY
SV BRADY
SV RHYTHM
SV TACHY
UNKNOWN ECG RHYTHM
LEARNING ECG
LEARNING RHYTHM
CANNOT ANALYZE ECG
7 ECG, Arrhythmia, ST and QT Monitoring
No QRS for 4 consecutive seconds in absence of vent fib or chaotic
signal
A fibrillatory wave for 4 consecutive seconds
A dominant rhythm of adjacent Vs and a HR > the V-Tach Heart
Rate Limit
Ventricular tachycardia rhythm for more than 15 seconds
A dominant rhythm of adjacent PVCs and a HR
Limit
A dominant rhythm of N, V, N, V
A dominant rhythm of N, N, V, N, N, V
A dominant rhythm of paced beats
Consistently irregular rhythm
A dominant rhythm of SV beats preceded by P-waves
A dominant rhythm of SV beats not preceded by P-waves
Rhythm cannot be determined
Algorithm is learning the ECG beat morphology
Algorithm is learning the rhythm of the classified beats
ECG signal is predominantly invalid and therefore cannot be
analyzed
B or E
B, E
B, E
B, E
E
the V-Tach HR
E
E
E
B, E
E
B, E
B, E
B, E
B, E
B, E
B, E
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