Filter
Top Products
74 Stratos LV/LV-T Technical Manual
2.3.4 Repetitive Hysteresis
Repetitive hysteresis is expanded programmability of the
Hysteresis feature. Repetitive hysteresis searches for an
underlying intrinsic cardiac rhythm, which may exist slightly
below the programmed lower rate (or sensor-indicated rate) of
the patient. Following 180 consecutive sensed events, this
feature allows the intrinsic rhythm to drop to or below the
hysteresis rate. During the time when the intrinsic rate is at or
below the hysteresis rate, pacing occurs at the hysteresis rate
for the programmed number of beats (up to 10). Should the
number of programmed beats be exceeded, the stimulation rate
returns to the lower rate (or sensor-indicated rate).
If an intrinsic cardiac rhythm is detected within the programmed
number of beats between the hysteresis rate and the lower rate,
the intrinsic rhythm is allowed and inhibits pacing by the CRT-P.
Figure 4. Repetitive Hysteresis
Repetitive hysteresis has been incorporated to promote
spontaneous cardiac rhythm and may reduce device energy
consumption.
NOTES:
Repetitive Hysteresis is not active during the programmed
Night Mode.