Fig. 4
The optimizing algorithm of the optimal AV delay. Pend-As/ Pend-Ap: atrial activation time at atrial sensing/ pacing; AV: atrioventricular; As-Vs/Ap-Vs: intrinsic atrioventricular conduction time at atrial sensing/pacing; SAVopt-AV/PAVopt-AV: sensing/pacing AV delay optimized according to optimal AV synchrony; SAVopt-V/PAVopt-V: sensing/pacing AV delay optimized according to optimal ventricular synchrony; D-values: different values; opt-SAV/opt-PAV: optimal sensing/pacing AV delay with maximal integrative AV and ventricular resynchronization