Hi RU! Dad had the artifical valve replacement. Like you, we did not know if it would be a repair or replacement until the surgeon was actually in there and saw the problem. I faintly recall (BRAIN FOG) reading not to long ago that a new procedure has become available that some heart surgery can now be done without cracking the chest. I can remember discussing this with my dad, and he had also seen the article. This might be something to look into to as it might possibly reduce the chance of RSD spreading due to a bone injury. I saw the cardiologist this week for the first time and had to explain to him and his nurse what RSD is. Thankfully I had the information card from the RSD Association so they did not think that I was making it up. As always, best of luck and an early happy birthday. I am also having the same significant birthday this year. Lisa