The most important thing is, it doesn't require splitting the sternum or cutting off ribs, so the damage to bone is minimal and the overall trauma to the body is small. Those are all advantages. You can basically call it a minimally invasive surgery in the field of surgery.
That said, this kind of incision is used mostly in pediatrics, and very rarely in adults. The reason is that adults have a bigger thorax, so when you go in from the right-side incision, the heart lies very deep; it's hard for the surgeon to see that deep, and hard to operate. All these rules and constraints mean that obese patients and tall, strongly built male patients are essentially not suitable candidates for this approach. Thin adult men and women can give it a try.
