BIOTRONIK Evia DR, Technical Manual

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Evia Technical Manual 115
Sensor rate recording is independent of the effectiveness of the
respective pacing rate, and it is not influenced by inhibition of
pacing due to spontaneous events. Rate data are also recorded
in non-rate-adaptive modes.
Recording stops when the memory available for recording the
sensor rates is full. Recordings can be stored for several years.
The frequency distribution of the sensor rates can be displayed
as a diagram during follow-up examinations.
N
OTE
:
When Event Counters exceed 8 digits, they are presented in
exponential form. Heart Rate and Sensor Rate Histograms
will switch to exponential form when the Counters exceed
6 digits (e.g., 1,000,000 events will appear as 1.0E + 06).
8.4.2 Activity Report
This feature operates by recording characteristic pulse generator
data related to patient activity.
•
No Activity
•
Activity
•
Maximum Sensor 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.
8.5 Pacing Statistics
Lead Impedance Trends with Lead Check
Evia pulse generators can perform lead impedance
measurements for both atrial and ventricular leads. These
measurements are stored in memory for use in lead impedance
trend data as a function of time. The pace current and voltage is
measured in order to determine the lead impedance.
Every 30 seconds, the lead impedance measurements are taken
and are available for diagnostic trend display. The programmer
will display a long-term trend of 240 days.