V Series Operating Instructions 29 - 27
Product Specifications ECG Performance
High Alarm Limit:
49. ST Segment Analysis Performance Requirements
50. ST deviation Alarms
System is equipped with ST deviation alarms. ST deviation alarms trigger if the measured deviation is
equal to or greater than the alarm setting for the appropriate lead. Single ST & Dual ST deviation
Alarms Limits:
(For Adult, Pediatric)
51. Arrhythmia Analysis
Adult and Pediatric: 300 to 600 ms in steps of 1 ms, factory defaults to Off.
TABLE 29-25
ENABLING: ADULT AND PEDIATRIC MODES ONLY.
Absolute ST Deviation Range(12 Lead ECG): -10.0 mm to + 10.0mm (-1000µV to + 1000µV RTI
Resolution: 0.1 mm (10 µV).
User Selectable ST Measurement Points: 40, 60 or 80 msec after the J point (heart rate
independent) OR 60/80 Heart Rate Dependent.
Default ST Measurement Point: 60/80 Heart Rate Dependent.
(80 msec after the J point for heart rates
±120 BPM.
60 msec after the J point for heart rates >120 BPM.)
Default ISO Point:
User Selectable ISO Point
(12 Lead ECG):
- Located between the P and Q waves.
- User adjustable from “R peak” - 10msec to “R peak” -
200msec in 2 msec increments.
Default J Point:
User Selectable J Point
(12 Lead ECG):
End of the QRS complex.
User adjustable from “R peak” + 10msec to “R peak” +
200msec in 2 msec increments.
Excluded Beats: Ventricular ectopic beats and ventricular paced beats
are excluded from ST measurements.
Invalid ST: (12 Lead modes): ST data shall be invalidated under the following
conditions:
If Ventricular Paced Rhythm, Ventricular Rhythm or
Ventricular Tachycardia persists for more than 45
seconds and/or during detected episodes of Asystole
and Ventricular Fibrillation.
Invalid ST deviation data displayed as invalid (- -)
TABLE 29-26
ST Single Lead High Alarm: +0.5 to +10.0 mm in steps of 0.1 mm, default: Off
ST Single Lead Low Alarm: -0.5 to -10.0 mm in steps of 0.1 mm, default: Off
ST Dual Lead High Alarm: +0.5 to +10.0 mm in steps of 0.1 mm, default: Off
ST Dual Lead Low Alarm: -0.5 to -10.0 mm in steps of 0.1 mm, default: Off
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