Detecting atrial evoked response

Details Detecting atrial evoked response Detecting atrial evoked response

2007-11-30

2010-12-21

Bertram, Eric D. (Department: 3766)

Surgery: light, thermal, and electrical application

Light, thermal, and electrical application

Electrical therapeutic systems

Reexamination Certificate

active

07856271

ABSTRACT:
A method for sensing cardiac activity in an atrium of a patient's heart includes delivering a pulse to the atrium using an electrode configuration that includes at least a cathode electrode; sensing cardiac activity in the atrium using a unipolar electrode configuration to provide a sensed signal wherein the unipolar electrode configuration does not include the cathode electrode; determining the duration during which the voltage of the sensed signal falls below a threshold voltage; and comparing the determined duration to a parameter to determine whether the pulse caused an atrial evoked response.

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