You're definitely right. My bad.
A&B refers to the site of the vascular tear of a dissection. I don't know what I was thinking. (o_0)
RE: Heart rate and TAA
As an aside, the more I think on it the more I become confused about
the 130bpm rule. Your body does a great job of regulating blood pressure to the value it considers baseline, even during exercise (read: elevated HR). I would imagine that so long as your blood pressure remains within an acceptable range during exercise, it shouldn't be a big deal if your HR increases). It may be worth getting a couple more opinions on the matter.
RE: 20lb rule, a bit of educated conjecture to serve as food for thought and no more.
I'd imagine that they consider anything above that likely to require a "valsalva maneurver". This is where people hold their breath while they exert themselves. This can transiently increase the amount of blood flow returning to your heart, resulting in a reactionary increase in blood output from the left ventricle to the aorta and a transient, high, increase in blood pressure that in repetition could increase the size of the TAA, or at worst, could potentially induce rupture (essentially zero probability at 4cm-ish TAA size range according to most literature).
Having said that, if a renowned cardiologist says that most physical activity is still on the table, I'd definitely hunt around and get a consensus.
Post Edited (trn450) : 10/10/2010 5:40:16 PM (GMT-6)