User Manual

ARRHYTHMIA ANALYSIS
70 PatientNet Operator’s Manual, v1.04, 10001001-00X, Draft
All information contained herein is subject to the rights and restrictions on the title page.
Learn and Relearn Considerations
Immediately upon placing the patient on the system, the arrhythmia analysis software
begins a LEARN. During this time, the software is comparing all incoming beats to a
reference in order to form a template for that patient’s normal QRS complex. During
the learn mode, only the alarms for ASYSTOLE and V-FIB are activated. HIGH HR
and LOW HR will be generated if the alarms are ON. It is important to regularly
review each patient’s zoomed in Full Disclosure screen. The annotations that appear
should be N, for the dominant beat, or A, for the premature normal beat. See “Beat
Labels” on page 58 for details on annotations.
Rhythm Indicator
The Rhythm Indicator appears as a small green, yellow, or flashing red R in the
Patient Tile and provides a visual indication of the current beat quality for a given
patient. See “Patient Channel Tile” on page 36. When the beat quality value decreases
to a set yellow threshold value, which is configurable in the administrator screens, the
Rhythm Indictor will appear yellow. Subsequently, when the beat quality value
decreases further to a set red threshold value, the indicator will appear red and flash in
the Patient Tile. When the beat quality value increases, the Rhythm Indicator is dis-
played as the appropriate threshold color.
Note: The Rhythm Indicator status is stored in full disclosure and history screens,
as well as printed on laser strips. The beat quality percentage is calculated
and displayed as a Learned Template Match (LTM) percentage.
Manual Relearning
Use the relearn function under the following conditions:
a patient’s dominant rhythm changes in configuration and type
leads have been taken off and replaced
the current learn was performed during an extremely noisy segment.
when there are significant numbers of Qs without a change in wave morphol-
ogy.
a false alarm occurs and the dominant beat is not identified with an “N” in the
24-hour/72-hour full disclosure.
when the Rhythm Indicator in the Patient Tile turns from green to yellow or
red due to a change in wave morphology.