Surgeons these days can do great and wonderous things under the worst of circumstances. They can heal us in a fashion that borders on miraculous at times, however they are not God, not by any stretch of the imagination.
By far, the most demanding work a cardiac surgeon can do is in pediatrics, working on neonatal patients with severe, complex heart conditions.
The average, normal human heart is about the size of a closed fist. That's it. When we talk about heart valves, we're talking about mechanical devices that are smaller than a quarter and expected to last well over 50 years or more of constant operation, opening and closing on average about 60 and 100 times a minute for years and years without error, seamlessly, perfectly.
In open heart surgery, they cut into your largest blood vessels, the ones that carry blood to and from the body, diverting all of the blood in your system through a machine designed act as a human heart. They cool you down, they stop your heart, they cut you wide open and put you VERY close to death for hours while they slice into your heart, cut out the bad parts, and attempt to replace them and rebuild you from the inside out.
They do this, and most of the time the patients survive. When you think about everything that goes into it, it's amazing ANY of us survived such an experience...
Unfortunately, some people do die. Modern Medicine has it's limitations, so do the doctors that practice it. There will always be that X factor, Murphy's Law, that intangeble anomoly that can turn even a simple procedure into a life and death struggle and kill the patient. It's there, it's the risk, the less than 1 percent mortality rate reported by the very best of the best surgeons in the world.
My surgeon, Dr. Roger Mee of Cleveland Clinic, is arguably the best pediatric heart surgeon in the world right now, he's at LEAST one of the best five. SOme of his patients die too. On the table or during recovery. Sometimes they just don't KNOW what happened, what went wrong.
That's the nature of this business really.
Small comfort I'm sure, but asking questions after the fact, pouring all of your energies into finding an answer that may not even be there, will tear you apart.
Sometimes inspite of all their best efforts, all the technology and experience and skills, the patient still dies.
Sometimes, like Ross and a few others here, we defy the odds too. No one knows why that works out the way it does just like know one really knows why kids are born with the heart conditions they have, no one can prevent it.
I hope you find peace for yourself. My thoughts are with you.