u/AcrobaticEnthusiasm2

I know this is very rare in little ones, would just like to see if anyone in this group has first hand experience. My 3 year old was born with Cor Triatriatum and ASD, both repaired at 3 months. She also has an ultra rare genetic disorder that one study showed to cause sick sinus syndrome. She has some bradycardia, but heart rate still rises normally with activity. I was told with kids a pacemaker implantation is determined by each child’s ability to compensate, so no set deciding factor, really. I wish I knew a bit more about how sinus node dysfunction progresses in little ones, and when you do see early bradycardia, how long does it take to progress?