6 ECG, Arrhythmia, ST and QT Monitoring
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
Rhythm Status Messages
The label B or E indicates basic (B) or enhanced (E) arrhythmia capability.
Rhythm Status Message Description
Biventricular Pacer Spike
Learning patient's ECG
Artifact (noisy episode)
Insufficient information to classify beats
Inoperative condition (e.g., Leads Off)
Pause or missed beat
No beat detected for a period > the asystole threshold
(2.5 - 4.0 seconds)
Fibrillatory wave (sinusoidal wave between 2 - 10 Hz) for
4 consecutive seconds
A run of consecutive beats labeled as V with run length ≥
the V-Tach Run limit and ventricular HR > V-Tach HR
Ventricular tachycardia rhythm for more than 15 seconds
A run of consecutive beats labeled as V with run length >
the Vent rhythm limit and ventricular HR ≤ the V-Tach
A dominant rhythm of beats labeled as N, V, N, V, N
A dominant rhythm of beats labeled as N, N, V, N, N, V, N,
A dominant rhythm of beats labeled as P
Consistently irregular rhythm
B or E