Thank you both for your helpful information. Even though my husband has had 3 echocardiograms (the first in 2012), the aortic valve was not the main issue, but a unspecified right bundle-branch block. So the increase in the aortic valve regurgitation from mild to severe in the last echocardiogram (4/4/18) was a shock. As you might infer from my posts, I'm focusing on the logistical side of things, and my husband is studying the medical options and decisions.
The Cleveland Clinic website was helpful. The ability to get a second opinion online is an interesting concept, but right now we are waiting to hear back from Stanford. It's preferable to us to be able to drive and not fly to get the medical help and surgery. We just learned about the pre-surgery tests that will be required- TEE and heart catheterization. I guess there is the choice of having those done locally or at the hospital where the surgery will be done. There is still a lot to learn. If anyone has any good reference books, please let me know. I guess most people get their information online now though.
Once again, I appreciate your advice.