Philips V24CT User's Reference Manual page 148

Using Philips Patient Care System with an Arrhythmia Computer
Arrhythmia Alarms on the 78560A and 78720 Arrhythmia
Computers
Alarm
ASYSTOLE (***)
VENT FIB/TACH (***)|
HR BRADY XXX < BBB (***) Heart rate < lower HR limit set or 40 bpm
VENT TACHY (***)
VENT RHYTHM (**)
PAIR VPBs (**)
PACER NON-CAPT/PACER
NOT-CAPTURE (**)
MISSED BEAT(S) (**)
4-10 Other Patients
Minimum Condition Required for
Alarm
No QRS for 4 consecutive seconds in
absence of V fib or chaotic signal.
Fibrillatory waveform detected for 4
consecutive seconds.
whichever is lower.
Either VENT RHYTHM with average
heart-rate > tachy HR limit or RUN VPB's
> tachy run limit with rate for the run >
tachy HR limit.
Tachy run limit is adjustable from 3 to 9
using the Change Limits display. Tachy
HR limit is adjustable from 80 bpm to 120
bpm using the Change Limits display.
Dominant rhythm of adjacent V's and HR
< = 120
Two consecutive VPBs between non
VPBs
Missed beat with pace pulse in paced
patient
Beat omitted with HR < 120 or no beat
for 1 second with HR >120