I doubt he is going to tell thete is something more serious than your pcp or cardiologist has told you. However, he may be telling you how serious it is because he is planning on trying to sell you some SERIOUSLY expensive treatment and maybe he thinks your family members will try to encourage you to spend the money. I might be wrong and either way i am sorry to hear he would try to worry you so much. Chiropractors don't amputate.