Patient Monitor User Manual Alarm Information
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Message
Cause
Alarm level
Low
Voltage(Limb)
None of the signal amplitudes of I, II and III leads
exceeds that of the alarm threshold that has been set.
PS: this alarm is available for 5 or 12 leads only, not
available for 3 leads.
User-selectable
Basic ARR
PVCs High
PVCs measuring value is above the upper alarm limit.
User-selectable
ASYSTOLE
No QRS is detected for 4 consecutive seconds
High
VFIB/VTAC
4 consecutive seconds' fibrillation wave occurs, or each
RR interval for 5 consecutive ventricular beats is less
than 600 ms.
High
VT > 2
3
≤
the number of consecutive PVCs < 5
User-selectable
COUPLET
2 consecutive PVCs
User-selectable
BIGEMINY
A dominant rhythm of N, V, N, V (N =
supraventricular beat, V = ventricular beat) was
detected.
User-selectable
TRIGEMINY
A dominant rhythm of N, N, V, N, N,V
User-selectable
R ON T
A type of single PVC under the condition that HR <
100, R-R interval is less than 1/3 the average interval,
followed by a compensating pause of 1.25X the
average R-R interval (the next R wave advances onto
the previous T wave).
User-selectable
PVC
Single PVC detected in normal heartbeats.
User-selectable
TACHY
Adult: RR interval for 5 consecutive QRS complex
≤
0.5 s.
Pediatric/neonatal: RR interval for 5 consecutive QRS
complex
≤
0.375 s.
User-selectable
BRADY
Adult: RR interval for 5 consecutive QRS complex
≥
1.5 s.
Pediatric/neonatal: RR interval for 5 consecutive QRS
complex
≥
1 s.
User-selectable
MISSED BEATS
If HR < 120 bpm, no beats are detected for 1.75 times
average RR interval; or if HR
≥
120 bpm, no beats are
detected for one second.
User-selectable
IRR
Consistently irregular heart rhythm
User-selectable
PNC
PACER NOT CAPTURE: no QRS complex detected
in 300ms after a pace pulse.
User-selectable
