Preserving the right atrial appendage might attenuate this effect.

The upper chamber receives the venous blood from both vena cavae and the lower chamber is in contact with the tricuspid valve and the right atrial appendage.

The embryonic left atrium form the trabecular atrial appendage, and the right atrium becomes the embryonic right atrial appendage.

The right atrial appendage (RAA) (right auricular appendix, right auricula, right auricle) is a small conical muscular pouch attached to the right atrium of the heart.