Patent ID: 8571652
Filing Date: 2013-10-29
Classification: A61B,A61N

Abstract:
1. A method for optimizing atrioventricular (AV) delay in elevated heart rates, said method comprising: measuring a heart rate from an implantable medical device (IMD); responsive to said heart rate falling within a target range of elevated heart rates, pacing a heart by said IMD using a plurality of AV delays, wherein each of said plurality of AV delays is different than another of said plurality of AV delays; measuring a cardiac output of said heart during said pacing at each of said plurality of AV delays wherein measuring the cardiac output comprises determining aortic arch blood flow; selecting an optimal AV delay of said plurality of AV delays, wherein said optimal AV delay corresponds to one of said plurality of AV delays producing a highest cardiac output; and storing said optimal AV delay and said heart rate in an optimal AV delay table on said IMD.