Julian,
I have the same issue with the breathing in thing. It just gets faster and stronger when I take a deep breath. Sometimes I try practicing my 3 part yoga breathing....and ease into a deep breath, just to work on building up my lungs and getting my heart more used to it. I think it's the AV... I also have couplets, and flutter and fib at times still, Doc is not worried, because I don't have any symptoms....its just more of a nuisance. I may just live with it. We are so close in surgery dates....it will be interesting to keep in touch on this stuff.
Susan.
Congenital: Cleft MV, BAV, ASD. First OHS 8-3-11: MVR, TVR: Edwards MC3/4900 AS, ASD (2), MAZE, AVR: St. Jude. Dr. James Tweddell/Herma Heart Team and Wisconsin Adult Congenital Heart (WAtCH) Disease Program, Dr. Earing and Bartz, Children's and Froedtert of WI...YAY!