I was so put out with the initial doctor who did my first cath - stood over me yacking at the tech about his golf game - like I wasn't there, and I'd ask a question or two about what I was seeing on the screen. NONE of my doctors that I've had since treated me like that.
I went from thinking it was just the leaky valve to then finding that I had the ascending aortic aneurysm, too. I was walking around in a shuffle all the time, sometimes sitting and planning where to go in my house as any extra moving seemed to tax me so badly. After my surgery, in fact, two days later in the hospital and due to my age and the fact that neither of my legs was involved (like it'd have been in a bypass situation with veins harvested) I was almost knocking my wonderful nurses down as I'd get out of bed. Within a week (once we got the clot out of my arm, too) I was in my yard, walking around (I'm an outdoors freak, it was early May, just beautiful out!) holding my pillow under my arm and against my chest. My legs were strong. I had that crappy cough that could make me think I was about to break in two, but I'd keep going until it cleared. I practiced breathing REALLY deeply, filling my belly area with air like when I used to play my flute. This really helped stretch my lungs back out and kept them clear.
Surgery was April, by September and August I was back to walking down our road, on our sidewalk here in our little town. My neighbors beeping at me was like the Hallelujah Chorus!
I don't know what type of questions for you to ask - every time I heard a word I didn't understand, I'd stop a nurse or my doctor(s) and say, "Okay, what does that mean?" and they were great about explaining. Look at diagrams of the heart and aorta, get familiar with anatomy and function. Talk to those who've had it, like you're doing here, and it takes the stigma and fear away. The cough and the shoulder/clavicle pain were the worst besides having that clot in my arm. All is absolutely well mechanically now, just getting meds off in a new direction. You're going to do SO well!