Chapter 10 Follow-up Procedures
Evia HF / HF-T Technical Manual
PAGE 102
10.4.3 Mode
DDI, VVI, AAI and VDD are the available modes for the sensing test
The DDI mode provides programmable pacing support during the test and allows the user to measure
atrial and ventricular values simultaneously.
The VVI mode provides programmable pacing support during the test. This mode can be used for
patients who can tolerate single-chamber pacing.
AAI mode provides no ventricular pacing support and should not be used for pacemaker-
dependent patients.
VDD mode may be used for pacemaker-dependent patients who are symptomatic with non-tracking modes.
Below is a summary of parameters associated with the Sensing test. These are all temporary values
activated during the test.
10.4.4 Sensing test parameters
10.4.4.1 Basic Rate
30 … (1) … 90 … (2) … 122...(3)...140...(5)...200 ppm.
Default value of 30 ppm. The Evia CRT-P will provide support pacing at the programmed Basic rate
during the Sensing test.
10.4.4.2 AV Delay
100 ms with the DDI mode and 50 ms when the VDD mode is selected.
10.4.4.3 Upper Rate
90 … (10) … 200 ppm
Default of 130 ppm. This is a programmable value only when the VDD mode is selected.
10.4.4.4 Report
OFF, 5, 10, 25 or 50 mm/sec
Default is OFF. Report is the paper speed when performing the sensing test.
10.4.4.5 Pulse Amplitude
0.2 - 7.5 V: default value is the permanently programmed value. Independently programmable for
each chamber.
10.4.4.6 Pulse Width
0.1, 0.2, 0.3, 0.4, 0.5, 0.75, 1.0, 1.25, 1.5 ms. Default value is the permanently programmed value.
Independently programmable for each chamber.
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