04944298 is referenced by 334 patents and cites 3 patents.

An atrial rate based programmable pacemaker including means for preventing the heart from being paced at an upper rate limit for prolonged periods of time is disclosed which paces the heart at a rate that follows or tracks the atrial rate up to the upper rate limit of the pacemaker, at which point the pacemaker stimulates the heart at the upper rate limit, but also continues to monitor the atrial rate. If the monitored atrial rate exceeds a second upper rate limit, a fast atrial arrhythmia or tachycardia condition is deemed to exist, and the pacemaker automatically switches from its existing mode of operation to an alternate mode of operation in an attempt to break or terminate the fast atrial condition. Alternate embodiments include using an external activity or physiological sensor to control the pacing rate in the new pacing mode, and the inclusion of means for periodically verifying that atrial sensing is occurring, and means for automatically adjusting the sensitivity of the atrial channel as required.

Title
Atrial rate based programmable pacemaker with automatic mode switching means
Application Number
7/355588
Publication Number
4944298
Application Date
May 23, 1989
Publication Date
July 31, 1990
Inventor
Jason A Sholder
Northridge
CA, US
Agent
Leslie S Miller
Lisa P Weinberg
Bryant R Gold
Assignee
Siemens Pacesetter
CA, US
IPC
A61N 1/00
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