| US 7,463,925 B2 | ||
| Methods and systems for promoting ventricular pacing | ||
| Andrew P. Kramer, Minneapolis, Minn. (US) | ||
| Assigned to Cardiac Pacemakers, Inc., St. Paul, Minn. (US) | ||
| Filed on Mar. 05, 2004, as Appl. No. 10/794,151. | ||
| Application 10/794151 is a division of application No. 10/062048, filed on Jan. 31, 2002, granted, now 7,177,679. | ||
| Application 10/062048 is a division of application No. 09/420679, filed on Oct. 19, 1999, granted, now 6,415,180. | ||
| Application 09/420679 is a continuation in part of application No. 08/833281, filed on Apr. 04, 1997, granted, now 5,983,138. | ||
| Prior Publication US 2004/0210265 A1, Oct. 21, 2004 | ||
| Int. Cl. A61N 1/362 (2006.01) | ||
| U.S. Cl. 607—15 | 36 Claims |
| 1. A method of restoring or maintaining ventricular pacing of left and right-ventricles of a patient's heart, comprising:
providing a plurality of atrioventricular delays, the plurality of atriventricular delays comprising a sensed atrioventricular
delay;
providing a post ventricular atrial refractory period (PVARP);
pacing the lift and right ventricles and initiating the PVARP during at least one cardiac cycle;
detecting disrupted ventricular pacing comprising sensing an intrinsic ventricular depolarization during the cardiac cycle;
responsive to detecting the disrupted ventricular pacing, implementing at least one modified timing interval including a decreased
PVARP during at least one subsequent cardiac cycle;
pacing the ventricles and initiating the decreased PVARP during the at least one subsequent cardiac cycle;
sensing an intrinsic atrial depolarization occurring beyond the decreased PVARP;
initiating the sensed atrioventricular delay relative to the intrinsic atrial depolarization; and
pacing the ventricles following the sensed atrioventricular delay.
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