Any irregularity in your heart's natural rhythm is called an
arrhythmia. Arrhythmias are usually treated first with medicines. Other treatments
Ablation procedures may cure your atrial fibrillation by scarring or destroying
tissue in your heart that triggers an abnormal heart rhythm. During the
procedure, the surgeon may make a number of small incisions in both of
your heart's upper chambers. The incisions are made in a certain pattern,
like a maze, that will direct your heart's electrical impulses straight
to the heart's lower chambers.
Instead of making cuts, the surgeon may choose to use cryoablation, which
uses extreme cold to freeze small areas of heart tissue. Additionally,
radiofrequency, microwave, laser and/or ultrasound, all of which use heat
energy, may be used to make the incisions. Ablation procedures work because
after your heart heals, scar tissue forms. Scar tissue cannot carry (conduct)
electrical impulses, so the scar tissue that forms around the incisions
keeps the electrical impulses on course.
Left Atrial Exclusion
Left Atrial Exclusion consists of excluding or closing the left atrial
appendage, which is a normal outpouching of the atria, which may collect
blood clots caused by atrial fibrillation. The surgeon does this by suturing
the left atria closed or applying a clip to it, which prevents blood clots
from entering your circulation and potentially causing a stroke.