User's Manual

Cardiac Airbag Technical Manual 75
In this table, it is assum
treat ventricular tachyar
ed that the device delivers no shocks to
rhythmias, however, automatic capacitor
reformations are equally spaced on a quarterly (every 3 months)
basis throughout the life of the ICD. Therefore, the table starts
at a minimum of 4 shocks per year, because capacitor
reformations are equivalent to shocks. The estimates associated
with 0% pacing support assume the ICD is sensing an intrinsic
sinus rhythm at a rate of 70 bpm.
Table 4: Longevity Estimates
VVI Pacing
Support
Shocks Per Year
(includes cap reforms)
Years
12 3.5
10 3.7
8 3.9
6 4.1
100 %
4 4.4
12 3.7
10 3.9
8 4.1
6 4.4
50 %
4 4.7
12 3.8
10 4.0
8 4.3
6 4.6
15 %
4 4.9
12 3.9
10 4.0
8 4.4
6 4.7
0 %
4 5.0
After the ERI period the device is at EOS (End of Service) and
requires explantation. Upon reaching EOS all tachyarrhythmia
detection and therapy is disabled.