Symphony DR Symphony® DR 2550

99.9%1 intrinsic conduction

  • Preserve AV conduction while ensuring ventricular back-up pacing

  • Manage 1st degree AV block at rest and during exercise

  • Include comprehensive AV conduction and arrhythmia diagnostic functions

  • Comprehensively monitor the rhythm and track the delivered pacing therapy

 

Symphony® DR 2550, with its AAISafeR mode, provides comprehensive support for optimal physiologic pacing in all types of AV conduction disorders, including fixed first degree AV block.

AAISafeR ensures critical dual-chamber pacing in case of AV block. As in AAI, it enables AV conduction, while constantly monitoring ventricular activity.

In addition to suppressing unnecessary ventricular pacing, Symphony® DR 2550 has advanced diagnostic functions, including 7 minutes of EGM recordings, and expeditious follow-up tools, such as AIDA+.

 

Automatic storage of EGMs for each kind of AV block

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Symphony DR automatically stores EGMs during up to 7 episodes of AV block or ventricular pauses, including at least 1 episode for each type of AV block. In this example the device is managing 1st degree AV block by switching from AAI to DDD after 7 consecutive PR intervals >350 ms.

 

Monitor changes in AV conduction over time

 

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Histogram of AAIsafeR activity

The upper histogram shows the daily number of blocked P-waves synchronized to DDD pacing. The lower histogram shows a progressive increase in the number of mode switches that occurred in the 6 months preceding this interrogation.

 

 

 

AIDA

Automatic All the way

  • Allows for a simple and swift optimization of pacing functions

  • 7 minutes of complete electrogram recordings

  • Automatic and comprehensive self-diagnosis of:

 

    -Atrial and ventricular arrhythmias

    -Pacemaker function

    -AV conduction

 

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When interrogating this pacemaker, the stored EGMs revealed the occurrence of 7 episodes of AV block. This episode shows pacing switch from AAI to DDD mode, using the 2nd degree AV block criterion (i.e. 3 blocked P waves within 12 atrial cycles).

 

Intended uses, warnings and precautions

 


1. Davy JM et al; Determining the optimal pacing mode to prevent ventricular pacing: SAVE R study results. Heart Rhythm; 2006;3 (Supp 5):S169, P2 94. Abstract.

2. Mabo P., et al. Impact of ventricular pacing on AF prevention. Pacing Clin Electrophysiol 2002;25 (Pt.II): 621. Abstract 39.




Documentation

Brochure

Technical Specifications