User's Manual

Arrhythmia
9-7
The factory default setting for the Abnormals per Minute limit is OFF.
Table 1 describes the arrhythmias detected with the Multiview I or II options (with
arrhythmia detection enabled).
* Prematurity is defined as an instantaneous R-R interval that is
(1) 15% premature as compared to the average R-R interval and,
(2) <
666 msec for couplets and runs, and <500 msec for tachycardias of a
supraventricular origin.
** Template-forming classes.
!
• If the alarm limit for high rate, low rate, ABN/MIN, or ABN IN
ROW is displayed in reverse video, this is an indication that
alarm tone, alarm recording, and alarm watch have been
disabled for the indicated alarm.
Table 1: Classification of Events
Type of Class
Defining
Characteristics
Prematurity
Required
Max # of
Classes
Allowed
Type of Waveform
Storage
ABNORMAL **
1 beat of abnormal
morphology
No
12
Qualifying occurrence
(5th) + most recent
COUPLET **
2 consecutive beats of
abnormal morphology
No for the first beat;
Yes for the second
beat *
Qualifying occurrence
(3rd) + most recent
RUN
3 or more consecutive
beats of abnormal
morphology
No for the first beat;
Yes for each
subsequent beat *
32
6-seconds of each
occurrence. First in, first
out. Saves longest Run
and Pause
PAUSE
An R-R interval that is
1.8 x (or 80%) longer
than normal
No
ASYSTOLE
Absence of QRS for
5-seconds or more
No NA
6-seconds of last
occurrence stored as a
pause when following
normal beats
PACED
1 pacemaker flag
followed by a QRS
(within 150 msec)
No 1
First paced beat
occurrence each minute
(PACED key must be set
to YES)
AV PACED
2 pacemaker flags
followed by a QRS
No 1
First paced beat
occurrence each minute
(PACED key must be set
to YES)
TACH
(SUPRA
VENTRICULAR)
≥ 5 or more premature
dominant beats in a
row
Yes * 1
6-seconds of last
occurrence
VFIB NA No 1
6-seconds of last
occurrence
DOMINANT ** NA NA 1
Qualifying occurrence
(10th) + the most recent
each minute