Dual-chamber implantable pacemaker having negative AV/PV hystere

Details Dual-chamber implantable pacemaker having negative AV/PV hystere Dual-chamber implantable pacemaker having negative AV/PV hystere

1998-10-26

2000-06-27

Getzow, Scott M.

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

A61N 1365

Patent

active

06081747&

ABSTRACT:
A dual-chamber implantable pacemaker is configured to operate in the DDD or DDDR mode with its AV (or PV) interval automatically set to be a small time interval less than the natural conduction time of a patient. The pacemaker shortens the AV (or PV) interval in response to a verified R-wave occurring within the AV (PV) interval, which it discriminates from an ectopic R-wave by requiring the occurrence of at least three consecutive R-waves or, alternatively, the occurrence of an R-wave having a morphology that matches the morphology of a reference R-wave stored in the pacemaker's memory. When the AV (or PV) interval is set to a value that is less than the natural conduction time, preemptive ventricular pacing.

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