User Manual

Limitation:
The pacing rate induced by rate acceleration is limited to 120 ppm (or to the maximum rate if
the latter is lower).
Programming constraints:
1. This function is available when Dplus or DDD mode is programmed.
2. If any of the AA prevention functions is activated, acceleration is forced to 0% and is not
programmable.
AV delay shortening
The Acceleration function (only) may be accompanied by a shortening of the AV delay,
intended to increase hemodynamic response.
Indication:
Shortening of the AV delay should be used only for patients presenting sinocarotid
hypersensitivity with vasodepressive response.
Programming constraint:
This function is available when rate acceleration is programmed.
Rest rate
The rest rate is the pacing rate to which the pacemaker adjusts when it senses that the patient
is sleeping or resting.
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".
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.
15.6.4.
15.6.5.
15. FUNCTIONS AND PARAMETERS
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