Over the last six-to-eight weeks Ive had mild symptoms of lightheadedness, low energy and shortness of breath. But at this point, its not that big of a change. Obviously, anytime you bring up the heart, its scary. "I think his first concern was making sure that we would continue to go about our business the right way with him being gone and, obviously, to kind of ease our minds that we weren't too overly concerned about him and this procedure." Towards the end of his 12-year career, Boone underwent open heart surgery in March 2009 to replace the bicuspid aortic valve, which may cause the hearts aortic valve to narrow, reducing or blocking blood flow.
The open heart surgeries were expensive.
( z0 expensive :domain ( z1 surgery :ARG2 ( z2 heart :ARG1-of ( z3 open ) ) ) )
(z0 / expensive
    :domain (z1 / surgery-01
                :ARG2 (z2 / heart
                          :ARG1-of (z3 / open-01))))
The open heart surgeries were expensive .
z2 :ARG1-of z3
z1 :ARG2 z2
z0 :domain z1