Same-same, but different? Postoperative rhythm disturbances and other analysis after rotational Z-flap vs. patch repair of sinus venosus atrial defects

1

The study compared postoperative arrhythmias between two techniques for correcting sinus venosus atrial septal defects: patch repair and rotational Z-flap.
2

Operative times were significantly shorter for the Z-flap technique, with total times of 182.6 minutes compared to 209 minutes for the baffle group.
3

Postoperative rhythm disturbances occurred in 54.5% of patients, with right bundle branch block being the most common at 40.1%.
4

The Z-flap group had a higher incidence of sinoatrial block with junctional rhythm at 17.5%, compared to 4.3% in the baffle group.
5

Both surgical methods are effective, but the Z-flap technique, while more efficient, carries a higher risk of postoperative junctional rhythms.

Frontiers In Cardiovascular Medicine

by Raphael Groß, Melika Hajymiri, Mohamed Elbayomi, Frank Harig, Friedrich Mellert, Robert Cesnjevar, Presheet Pathare
June 17, 2026

1