Obviously, we are not going to be doing open heart surgery at this stage. Eventually, we should be able to perform most operations.

Potentially, you may have to do an invasive medical procedure, so we are evaluating step-by-step procedures and developing the techniques and technologies to address those.

Depression is common among patients with heart attacks. About 22 percent of all heart attack patients are depressed.

We are now recognizing that it involves his heart, his liver, the kidneys. And so multiple organs are involved, and so he is in critical shape.

The likelihood is that the hole in the heart was of no relevance.

That's important because that's what precipitates an acute heart attack or stroke.