The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 11, 2012
Filed:
May. 16, 2011
Derrick W. Reed, Calabasas, CA (US);
Rohan A. More, Glendale, CA (US);
Heidi Hellman, Los Angeles, CA (US);
Eliot L. Ostrow, Sunnyvale, CA (US);
Paul A. Levine, Santa Clarita, CA (US);
Derrick W. Reed, Calabasas, CA (US);
Rohan A. More, Glendale, CA (US);
Heidi Hellman, Los Angeles, CA (US);
Eliot L. Ostrow, Sunnyvale, CA (US);
Paul A. Levine, Santa Clarita, CA (US);
Pacesetter, Inc., Sylmar, CA (US);
Abstract
Systems and methods are provided for use by implantable medical devices equipped to deliver multi-site left ventricular (MSLV) pacing. Sequential MSLV is associated with a relatively long post-ventricular atrial blanking (PVAB) period that might limit the detection of pathologic rapid organized atrial tachycardias (OAT). In one example, sequential MSLV cardiac resynchronization therapy (CRT) pacing is delivered within a tracking mode. A possible atrial tachycardia is detected based on the atrial rate exceeding an atrial tachycardia assessment rate (ATAR) threshold. The device then switches to either single-site LV pacing or simultaneous MSLV pacing, thereby effectively shortening the PVAB to detect additional atrial events that might otherwise be obscured, and thereby permitting the device to more reliably distinguish OATs (such as atrial flutter) from sinus tachycardia. The device may also employ an automatic mode switch (AMS) threshold set higher than the ATAR threshold for use in switching from tracking modes to nontracking modes.