Interatrial conduction block–related atrioventricular dyssynchrony treated with dual-site atrial pacing

Double P-wave phenomenon and new-onset heart failure in a patient with previous heart surgery, permanent pacemaker, and repeated catheter ablations for right atrial flutters: What is the cause?

“…Atrial lead placement at the lower atrial septum (near the CS ostium) and dual-site atrial pacing with the help of a bifurcated Y-connector could also be a potential strategy, although this approach has rarely been described. 13 , 14 Biatrial pacing has also been demonstrated to be feasible using specifically designed CS leads for left atrial pacing. 15 However, a right atrial lead had already been abandoned in this patient, and an additional intervention was discouraged.…”