Patent ID: 8565880

Claim:
A system comprising: a cardiac stimulation circuit configured to generate a stimulation energy to provide His-bundle stimulation for multiple cardiac cycles; a cardiac sensing circuit configured to receive electrical information from the heart over at least a portion of the multiple cardiac cycles; a processor configured to determine characteristics of the received electrical information from the heart over the at least a portion of the multiple cardiac cycles using the received electrical information, the characteristics corresponding to individual ones of the multiple cardiac cycles; wherein the processor is configured to classify each cardiac cycle of the multiple cardiac cycles as a capture type using the respective determined characteristics, wherein the classifying includes distinguishing, for each cardiac cycle, a His-bundle capture type from (1) a myocardium-cell-to-myocardium-cell capture type, (2) an AV node capture type, and (3) a fusion capture type, the fusion capture type including at least partial intrinsic cardiac function fused with at least one of partial His-bundle capture, myocardium-cell-to-myocardium-cell capture, and AV node capture; and wherein the processor is configured to identify a His-bundle capture percentage using information about the classified cardiac cycles.