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Stratos LV/LV-T Technical Manual 113
NOTE:
The bars of the histogram are standardized to a rate class
width of 10 ppm to avoid distortion of the rate distribution.
2.21 Arrhythmia Statistics
2.21.1 Tachy Episode Trend
The Tachy Episode trend can only be selected when Mode
Switching has been programmed ON and for events that occur
at less than 1 minute intervals are combined in the tachy episode
and stored.
In the tachy episode trend, each tachycardic mode switching
episode is recorded in the statistics table with its initial date and
time as well as its duration. This documents both the frequency
and length of the tachycardic periods which can be evaluated in
the follow-up.
Mode Switch Counter – A counter reports the number of mode
switches that occurred since the last follow-up visit.
Mode Switch Trend (Tachy Episode Protocol) - The trend
records up to 64 atrial tachycardia episodes that result in a mode
switch. The trends are available as a rolling trend and therefore
contain information about the most recent events. The atrial
tachycardia episodes are displayed graphically as a function of
time on the programmer screen.
NOTE:
When the elective replacement indication (ERI) has been
attained, the contents of the tachy episode trends as well as
all memory contents are “frozen” and further recording is
stopped.
2.21.2 AF Classification
To adequately record atrial fibrillation (AF) and reduce the
number of times the recording is turned ON and OFF, a lower
and upper AF detection rate can be set. Both the lower sensing
rate as well as well as the upper resolution rate is
programmable: (100… (10)…300…… (2)…400 ppm).