ECG, arrhythmia, and ST segment
222 Instructions for use – Infinity Acute Care System – Monitoring Applications VG6.n
When the ASY/VF alarms setting is set to Always
on, asystoles and ventricular fibrillation events are
always reported, even when arrhythmia monitoring
is deactivated.
The following table lists Basic and Advanced
arrhythmia events that are reported with each
monitoring mode. The table also lists detected
events when the Arrhythmia mode is Off.
NOTE
The Advanced arrhythmia mode is only available
when the full arrhythmia option is activated.
Arrhythmia monitoring off (the following events are detected, if at least one ECG is displayed)
ASY Asystole 4 seconds pass without the detection of a valid QRS complex.
VF Ventricular fibrillation Sinusoidal waveform with fibrillation characteristics.
1)
Basic arrhythmia monitoring mode (the following additional events are detected)
VTACH Ventricular
Tachycardia
N or more PVCs are detected in a interval T = (60 * (N – 1)) / R,
where N is the VTACH count and R is the VTACH rate.
2), 4)
PVC Premature Ventricular
Contraction
PVC alarm limit exceeded. The PVC parameter value represents
the number of QRS complexes classified as PVCs over a 1-minute
interval.
ARTF Artifact More than 50% of beats in the last minute were classified as
questionable.
Advanced arrhythmia monitoring mode (includes Basic mode events plus the following additional
events)
RUN Ventricular RUN Series of 3 to N-1 consecutive PVCs with a beat-to-beat rate ≥ the
VTACH rate.
2)
AIVR Accelerated
Idioventricular
Rhythm
Series of 3 or more PVCs with a rate less than the VTACH rate.
SVT Supraventricular
Tachycardia
N or more consecutive normal beats, with a beat-to-beat rate
greater than or equal to the SVT setting.
2)
CPT Ventricular Couplet Sequence of beats with the pattern: normal, PVC, PVC, normal.
BGM Ventricular Bigeminy Sequence of beats with the pattern: normal, PVC, normal, PVC,
normal.
TACH Tachycardia N or more consecutive normal beats, with a beat-to-beat rate
≥ TACH rate setting.
2), 4)
BRADY Bradycardia Eight or more consecutive normal beats, with an average rate
≤bradycardia rate setting.
3)
PAUSE Pause Sequence of two beats classified as normal or PVC, with an
interval ≥ pause rate value in seconds (±100 ms).
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