Bob -- does this mean that Simon's ejection fraction is 25%..? I found this online just now:
"The left ventricle is the part of the heart that holds and pumps blood to other vital organs. A measure called the left ventricular ejection fraction or LVEF is used to check for damage due to heart attacks and other conditions. The LVEF value for a person with no heart damage is usually around 60 percent or greater. Systolic dysfunction (condition that causes reduced pumping ability of the heart's left lower ventricle) represents reduced pumping ability of the heart."
"The left ventricle is the part of the heart that holds and pumps blood to other vital organs. A measure called the left ventricular ejection fraction or LVEF is used to check for damage due to heart attacks and other conditions. The LVEF value for a person with no heart damage is usually around 60 percent or greater. Systolic dysfunction (condition that causes reduced pumping ability of the heart's left lower ventricle) represents reduced pumping ability of the heart."