Boston scientific received information that this cardiac resynchronization therapy pacemaker (crt-p) had ten years longevity two years ago and now battery showed six years longevity.Additional information was obtained from field representative indicating that the initial value was a projection when longevity calculation was not yet done.The patient was put on transtelephonic monitoring (ttm), and on following check up, device showed 6.5 years longevity.This was due to some factors such as; patient had atrial fibrillation (af) which caused high rate sensing that led to high power consumption, high left ventricular (lv) lead output and lower rate limit (lrl) of 80 beats per minute (bpm).No adverse patient effects were reported.
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