I agree that the choice is very tough. My daughter needed replacement last year (She was 10 yrs old at the time). Our original plan was the Ross procedure (optimal for young patients). When we discussed plan b with 2 surgeons and her cardiologist, they all agreed that mechanical was the best route for someone her age. Her surgeon (Dr. Bove @ Motts of UM) decided while in surgery that her pulmonary valve, while perfect in it's current position, would not have made a very durable aortic valve and would have needed replaced in less than 10 years. He went with plan b. I will be honest and tell you I was devastated! After speaking to him post op he made me realize that this was not the end of the world for Hannah.
She was given an adult size valve, to hopefully prevent future surgeries. She returned to dance and gymnastics (both her surgeon and cardiologist approved) 6 wks post op. We have had her INR stable for almost a year. My husband and I have made sure to educate her on her medication. She knows what to eat (I feed her her greens to make sure they are consistant) when she is not at home, which is never really an issue since they usually aren't serving spinach and broccoli at sleepovers. We have a short conversation with friends, family, just to give them a heads up. She has had minor cuts and bruises throughout the past year and I have not noticed a significant difference in how she clots or heals. Just as it was stated above, what once took a min to stop bleeding, now takes two. She sets an alarm on her phone for 9 pm to take her meds. If she is at a friend or family member's for the night, she simple texts me - "Took my pills". I was also concerned with the sound of her valve causing her destress. I am blessed to say this has not been the case. Her dad very soon after she was off the morphine explained to her that we had to go with plan b and that she had a superhero valve (prob won't fly with a 15 year old). She is not bothered by the sound (we only hear it every now and then) and actually lets her friends listen. An aquarium in her room helps drowned out the sound at bedtime.
Hannah was in the consultations with her surgeon and he fully explained everything to her - Plan A and B. I felt this was very helpful to her. The more she understood, the less scared she was. I think with your son, being as old as he is, he would benefit from this as well.
Hannah had a repair at 4 years and the replacement at 10. My biggest hope is that she never has to endure another surgery. Hopefully our biggest hurdle in the future is having children as warfarin is known to cause birth defects. This would obviously not be an issue since you have son.
It is a very personal decision. Many members on here chose tissue valves knowing that they would/will need another surgery and are completely fine with the idea. As a family we decided to try and prevent that - at least for as long as possible if not forever.
I wish you and your family the best of luck with you decision and your son's surgery.
Has your son expressed any opinion on way or the other?