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Variable shortening of AV delay for treatment of cardiac disease

  • US 20090082823A1
  • Filed: 09/25/2007
  • Published: 03/26/2009
  • Est. Priority Date: 09/25/2007
  • Status: Active Grant
First Claim
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1. A cardiac device, comprising:

  • one or more ventricular pacing channels for delivering pacing pulses to one or more ventricular sites;

    an atrial sensing channel;

    a controller programmed to operate the device in either a normal operating mode or variably shortened AV delay (VSAVD) mode;

    wherein, in the VSAVD mode, the controller is programmed to deliver paces to the one or more ventricular sites using an atrial triggered pacing mode that decreases atrial preloading of the ventricles as compared with the normal operating mode using an AV delay that varies during the VSAVD mode; and

    ,wherein the controller is programmed to intermittently switch from the normal operating mode to the VSAVD mode according to a one or more specified entry conditions and switch from the VSAVD mode to the normal operating mode according to one or more specified exit conditions.

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