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112 Stratos LV/LV-T Technical Manual
NOTE:
The VV value can deviate from the number of VES’ since the
Stratos CRT-Ps can also classify ventricular sensed events
that were preceded by an atrial event such as extrasystoles
via the AVES discrimination function after As.
In Stratos CRT-Ps:
• RVs followed by LVp.
• RVp followed by LVp
• LVp followed by RVp
A total counter that records grand total of all conductions is
located below the conduction counters.
2.20.3 Rate Trend
The rate trend is displayed as a line chart and consists of the
heart rate trend and the pacing rate trend. The atrial event, the
ventricular events and the events in the remaining third channel
are recorded at a set time. In the rate trend, the heart rate in
pulses per minute (ppm) is recorded in the upper rate chart, and
the percentage of pacing is shown in the lower chart. In the
Stratos CRT-Ps, the trends of the three different channels are
identified by three different colors.
Please note that a gap in the trend will be displayed for the
duration of an asynchronous magnet program or temporary
program.
2.20.4 Atrial and Ventricular Rate Histogram
The Stratos CRT-Ps are provided with separate atrial and
ventricular histograms. A bar chart displays the heart rate as a
percentage and corresponding absolute value. The number of
times in which the heart rate occurs in specific ranges is
recorded separately according to sensing and pacing. The rate
range between 40 and 390 ppm is divided into 10 ppm
increments along a rate measuring axis. The distribution of
distribution of the heart rates can be displayed on the
programmer as a diagram during follow-up examinations.