@akc I'm curious, why are you opposed to spinal fusion? It may depend on the number of levels involved; is it a cervical or lumbar issue? There are artificial discs, but there are limits to where they can be used and they have their own risks too. What is is you are looking for from a surgeon?

Have your surgeons indicated that your heart condition may prohibit spine surgery or make it riskier? That is something to think about and you may not be a good candidate for surgery in the future.