REDUCTION OF AV DELAY FOR TREATMENT OF CARDIAC DISEASE
First Claim
Patent Images
1. A cardiac device, comprising:
- one or more ventricular pacing channels for delivering pacing pulses to one or more ventricular sites;
a controller programmed to operate the device in either a normal operating mode or AV delay reduction (AVDR) mode;
wherein, in the AVDR mode, the controller is programmed to deliver paces to the one or more ventricular sites using a pacing mode that decreases atrial preloading of the ventricles as compared with the normal operating mode; and
,wherein the controller is programmed to intermittently switch from the normal operating mode to the AVDR mode according to a one or more specified entry conditions and switch from the AVDR mode to the normal operating mode according to one or more specified exit conditions.
1 Assignment
0 Petitions
Accused Products
Abstract
An implantable pacing device for delivering ventricular pacing may be configured to intermittently reduce the AVD interval for beneficial effect in patients with compromised ventricular function (e.g., HF patients and post-MI patients). The AVD interval may be reduced in an AVD reduction mode, by shortening the AVD in an atrial triggered ventricular pacing mode or by switching to a non-atrial triggered ventricular pacing mode (e.g., VVI) and delivering paces at a rate above the intrinsic rate. The physiological effects of AVD reduction may be either positive or negative on cardiac output, depending upon the individual patient.
-
Citations
20 Claims
-
1. A cardiac device, comprising:
-
one or more ventricular pacing channels for delivering pacing pulses to one or more ventricular sites; a controller programmed to operate the device in either a normal operating mode or AV delay reduction (AVDR) mode; wherein, in the AVDR mode, the controller is programmed to deliver paces to the one or more ventricular sites using a pacing mode that decreases atrial preloading of the ventricles as compared with the normal operating mode; and
,wherein the controller is programmed to intermittently switch from the normal operating mode to the AVDR mode according to a one or more specified entry conditions and switch from the AVDR mode to the normal operating mode according to one or more specified exit conditions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method, comprising:
-
delivering pacing pulses to one or more ventricular sites in either a normal operating mode or AV delay reduction (AVDR) mode; wherein, in the AVDR mode, paces are delivered to the one or more ventricular sites using a pacing mode that decreases atrial preloading of the ventricles as compared with the normal operating mode; and
,intermittently switching from the normal operating mode to the AVDR mode according to a one or more specified entry conditions and switching from the AVDR mode to the normal operating mode according to one or more specified exit conditions. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
Specification