This happens when any myocardial (heart muscle) or heart valve injury or disease impairs the function of the heart's main pumping chambers.
(This; happens; T:when any myocardial (heart muscle) or heart valve injury or disease impairs the function of the heart's main pumping chambers) (any myocardial (heart muscle) or heart valve injury or disease; impairs; the function of the heart's main pumping chambers)
This any myocardial (heart muscle) or heart valve injury or disease
happens impairs
T:when any myocardial (heart muscle) or heart valve injury or disease impairs the function of the heart's main pumping chambers
the function of the heart's main pumping chambers