Hello and thank you for using HCM.I carefully read your question and I understand your concern. You should not worry. I ll try to explain you something and give you my opinion. You should know that angiography its not painfull. It is made through local anesthesia in the plase of punctuation. The point of punctuation might be in your inguinal aera or in your wrist. So you will feel just the a small pain like when you take a blood analyze. Then the plase in under anesthesia and you don t feel anything. If you have problems with your coronary arteries it might happen to experience chest pains but they will be resolved through the procedure. Angor de novo its a medical term to explain a typical heart pain that appears for the first time. The term de nove means new pain,in a period between 30 days. This means that this complains should be verified through angiography. Hope I was helpfull. Wish you good luck. Best regards, Dr.Ervina.