Is there any advantage for dual chamber AV sequential pacing?

Is there any advantage for dual chamber AV sequential pacing?

In dual chamber AV sequential pacing, the atria are paced initially and the ventricles are paced after a delay. This facilitates ventricular filling by atrial contraction. This is more important in those with stiff ventricles. Normally atrial contraction contributes to only about 15% of ventricular filling. But in a ventricle with difficulty in relaxing, atrial contribution may be as high as 30%.