18
Rate adaptation via accelerometer
R modes:
Preset programs: Triple-Chamber
Standard and safe program
Only the auto-initialization function is activated as a factory setting. All the other func-
tions of the standard program are deactivated.
Parameter
Range of values
Standard
Sensor gain
1 ... 23
4
Max. activity rate
80 ... (5) ... 180 bpm
120 bpm
Automatic gain
OFF; ON
ON
Sensor threshold
Very low; low; medium; high; very high
Medium
Rate increase
1 ... (1) ... 10 bpm/cycle
4 bpm/cycle
Rate decrease
0.1; 0.2; 0.5; 1.0 bpm/cycle
0.5 bpm/cycle
Rate fading
OFF; ON
OFF
Parameter
Standard program Safe program
Mode (after auto-initialization: DDD)
DDDR
VVI
Basic rate
60 bpm
70 bpm
Night program
OFF
OFF
Rate hysteresis
OFF
OFF
Upper rate
130 bpm
—
Dynamic AV delay
Low
—
AV hysteresis
OFF
—
Sense compensation
-45 ms
—
AV Safety Delay
100 ms
—
VV delay
—
—
LV T-wave protection
ON
ON
Far-field protection after Vs
100 ms
—
Far-field protection after Vp
150 ms
—
Ventricular blanking period after Ap
30 ms
—
PMT protection
ON
—
VA criterion
350 ms
—
Magnet response
AUTO
AUTO
Pulse amplitude A
3.0 V
—
Pulse amplitude RV, LV
3.0 V
4.8 V
Pulse width A
0.4 ms
—
Pulse width RV, LV
0.4 ms
1.0 ms
Sensitivity A
AUTO
—
Sensitivity RV, LV
AUTO
2.5 mV
Refractory period A
AUTO
—
Refractory period RV
250 ms
300 ms
Refractory period LV
200 ms
200 ms
Mode switching
ON
—
Onset criterion
5-out-of 8
—
Resolution criterion
5-out-of 8
—
Intervention rate
160 bpm
—
Switches to
DDIR
—
Basic rate with mode switching
+10 bpm
—
Rate stabilization with mode switching
OFF
—
2:1 lock-in protection
ON
—
PVARP
AUTO
—
PVARP after PVC
400 ms
—
Lead configuration, automatically determined and set:
Pacing polarity A/RV/LV
Unipolar
Unipolar
Sensing polarity A/RV/LV
Unipolar
Unipolar
Automatic lead check A/RV/LV
ON
—
Active capture control A/RV/LV
ON
OFF
Atrial overdrive pacing
OFF
—
Parameter
Standard program Safe program
387513--D_GA_Evia-HF-ProMRI_mul.book Page 18 Thursday, September 12, 2013 3:34 PM