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6 ECG, Arrhythmia, and ST Monitoring Understanding the Arrhythmia Display
110
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 B or E
ASYSTOLE No QRS for 4 consecutive seconds in absence of vent fib or chaotic
signal
B, E
VENT FIB/TACH A fibrillatory wave for 4 consecutive seconds B, E
V-TACH A dominant rhythm of adjacent Vs and a HR > the V-Tach Heart
Rate Limit
B, E
SUST V-TACH Ventricular tachycardia rhythm for more than 15 seconds E
VENT RHYTHM A dominant rhythm of adjacent PVCs and a HR ≤ the V-Tach HR
Limit
E
VENT BIGEMINY A dominant rhythm of N, V, N, V E
VENT TRIGEMINY A dominant rhythm of N, N, V, N, N, V E
PACED RHYTHM A dominant rhythm of paced beats B, E
IRREGULAR HR Consistently irregular rhythm E
SINUS BRADY
SINUS RHYTHM
SINUS TACHY
A dominant rhythm of SV beats preceded by P-waves B, E
SV BRADY
SV RHYTHM
SV TACHY
A dominant rhythm of SV beats not preceded by P-waves B, E
UNKNOWN ECG
RHYTHM
Rhythm cannot be determined B, E
LEARNING ECG Algorithm is learning the ECG beat morphology B, E
LEARNING RHYTHM Algorithm is learning the rhythm of the classified beats B, E
CANNOT ANALYZE
ECG
ECG signal is predominantly invalid and therefore cannot be
analyzed
B, E