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Stratos LV/LV-T Technical Manual 117
2.22.2 Activity Report
This feature operates by recording characteristic pulse
generator data related to patient activity and pacing the
system. It is divided into three ranges:
• No Activity
• Activity
• MAR (Maximum Activity Rate)
This data can assist in the analysis of heart and sensor activity.
For example, a high value for the activity may indicate that the
sensor gain is set too high. In contrast, an extremely low value
for activity may indicate that the sensor gain is too low. All
values are expressed as percentages.
2.22.3 Sensor Optimization
The sensor optimization is displayed in the form of a line graph
containing the length of the time intervals and the trend data.
The sensor parameters are simulated and displayed as a trend.
The thicker line represents the recorded (intrinsic) trend) and the
thinner line the simulated (sensor) trend. A movable cursor
simplifies the reading of the intrinsic and the sensor trends.
2.23 Sensing Statistics
P-Wave Trend
This is the display of the sensitivity course in the atrium. The
P-wave trend is displayed in the form of a line chart. This P-
wave trend is a rolling, long-term trend with the programmed
resolution of 45 s – 36 h. Therefore, the 240 time windows with
the 36 h recording periods result in actual recordings for
approximately one year. The P-wave trend can record
amplitudes from 0.0 to 20 mV.
The trend is only displayed when sensed events are present.
During paced events, in the temporary program, or in the magnet
“asynchronous” mode, recordings are not made in the trend
(there are gaps).