Rate Smoothing - sorin REPLY DR Manual De Implante

Sensing principle: Sleep or rest phases are determined by reduced
respiratory and cardiac activity and a low occurrence of premature
complexes.
Programming requirements: 1. To be taken into consideration by
the pacemaker, the rest rate must be below the basic rate. 2. This
function is programmable when the Rate Response mode is
programmed to "RR Auto", "RR Fixed" or "Learn" and if sensor is
"MV" or "MV + G".
i Rate smoothing
The Smoothing function is designed to prevent a sharp rate drop to
the programmed basic rate in patients presenting with episodes of
paroxysmal bradycardia.
Operation: 1. If the patient's spontaneous rate drops, the pacemaker
takes over at a rate slightly lower than the spontaneous rate
immediately prior to the pause. 2. The pacing rate is then gradually
reduced until the basic rate is reached or the spontaneous rhythm is
restored.
Programming at implant: It is not advisable to program the
Smoothing function before implantation, since the pacemaker may
detect noise and pace at a rate higher than the programmed basic
rate.
Recommendation: Concomitant use of the Hysteresis function is
highly advisable to avoid triggering of pacing for slight variations in
the patient's spontaneous cycle (unless one of the AA prevention
functions is activated).
Programming requirements: 1. In VVI and VVT mode, the
Smoothing function cannot be programmed to "Slow" or "Very slow"
when the Auto-threshold function is programmed to "Monitor" or
"Auto". 2. The Smoothing function is automatically activated when an
AA prevention function is activated.
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