Welch Allyn Acuity Directions For Use Manual page 60

56 Chapter 4 Adjust monitoring settings and patient information
Full Arrhythmia Analysis option: additional events detected
Table 5. Full Arrhythmia Analysis option: events detected in addition to lethal events
Arrhythmia event and definition
PVC run (ventricular run)
A run of three to six consecutive,
premature ventricular beats that meets or
exceeds the patient's VTach alarm limit.
VRhythm (ventricular rhythm)
A run of successive ventricular beats that
is less than the V Tach alarm limit, and the
number of successive ventricular beats is
greater than or equal to three.
Couplet
Two consecutive ventricular beats that are
preceded and followed by a normal beat.
PVC/min
Premature ventricular beats that are
greater or equal to the patient's PVC/min
alarm limit.
Bigeminy
Three or more successive cycles
consisting of a normal beat followed by a
premature ventricular beat. Bigeminy is
independent of the average heart rate.
Trigeminy
Three or more successive cycles of two
normal beats followed by a premature
ventricular beat. Trigeminy is independent
of the average heart rate.
Tachycardia
A HR greater than or equal to the patient's
tachycardia alarm limit. If the tachycardia
limit is decreased past the HR high limit,
the HR high limit will decrease to a value
equal to the tachycardia limit.
Welch Allyn Acuity Central Monitoring System
Waveform example