I believe in asking your doctor your question and clarification but I was told by doctor and cardiac PT that the exercise lowers your BP. It is the heavy lifting and bursts of a lift that causes the blood pressure to rise. Anything in which you grunt, groan, hold your breath or exert yourself is what you should avoid. I am 69, female and already had an emergency aortic dissection. I’m 11 months out and walk 2 miles, bike, and do my normal gardening and hobbies like ride horses, jet ski, and swim. My BP is in check at 120-110 over 70 with .25 metropolol. All seems good so far and I don’t push it. These are all the things I did before surgery. I’m just not lifting (or pushing or pulling).