Pacemaker for terminating pacemaker-mediated tachycardia

Surgery: light – thermal – and electrical application – Light – thermal – and electrical application – Electrical therapeutic systems

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A61N 100

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053124502

ABSTRACT:
In order to terminate pacemaker-mediated tachycardia (PMT), a pacemaker (or "Pacer") capable of atrial synchronized ventricular pacing, defines a retrograde sensing window after a ventricular paced event. If a preset number of sequential retrograde sensed events occur within this window in consecutive pacing cycles the post ventricular atrial refractory period (PVARP) is extended for one pacing cycle (EXT PVARP) and the pacer will not attempt to interrupt a PMT for a relatively long preset interval thereafter.

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Chalfee, Richard V., "Pacemaker-Mediated Tachycardia: Engineering Solutions", PACE, vol. 11, Nov. 1988, Part II, pp. 1917-1928.
Duncan et al., "Prevention and Termination of Pacemaker-Mediated Tachycardia in a New DDD Pacing System (Siemens-Pacesetter Model 2010T)", PACE, vol. 11, Nov. 1988, pp. 1679-1683.
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