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AssigneePacesetter, Inc.
InventorsBrian M. Mann, Melinda Endaya, Paul A. Levine
Estimating the term…
A pacemaker programmer and diagnostic system retrieves information stored within a pacemaker and analyzes the retrieved data in real time. The stored information can be retrieved by means of a telemetry communication link. The pacemaker automatically lengthens a post-ventricular atrial refractory period (PVARP). The pacemaker determines atrial capture threshold by generating atrial stimulation pulses while maintaining the ventricular stimulation pulse amplitude at a level known to ensure ventricular capture, and by detecting loss of atrial capture. In response to the loss of atrial capture, a processor automatically shortens the AV delay in a subsequent cardiac cycle, to reduce the possibility of a retrograde P-wave initiating a pacemaker-mediated tachycardia (PMT). Also in response to the loss of atrial capture, the pacemaker records the atrial capture threshold, restores the PVARP to its pre-test value, and sets the atrial stimulation pulse amplitude to a value above the atrial capture threshold.
A method of determining an atrial capture threshold in a stimulation device having a programmable AV delay, the method comprising:
A stimulation device for determining an atrial capture threshold and having a programmable AV delay, comprising:
A stimulation device for determining an atrial capture threshold and having a programmable AV delay, comprising:
Dependencies are inferred from the claim text.