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The heart then has a reduced ejection fraction(percentage of blood ejected versus what was originally present before contraction). This is called systolic dysfunction. If the normal part of the heart is not receiving enough blood or has thickened,It will relax less well(this is diastolic dysfunction). Systolic and diastolic dysfunction results in an increase in pressures inside the heart causing shortness of breath with mild exercise or at rest. This is known as congestive heart failure.
Even a small heart attack in a critical spot can cause one of the heart valves (mitral) to not function properly and result in progressive congestive heart failure. Thus even a small heart attack can result in the same result as a large heart attack. The best for everyone is to avoid the first heart attack. That is CVRRUSA's mission. Contact us
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What is a heart attack? The heart is a muscle which needs blood. It is fed by what are called the coronary arteries. If the blood flow is cut off to a region of the heart for greater than 20 minutes, that region starts to die from the inside wall of the heart to the outside. If within six hours the blood flow is not restored, the total wall will be dead. If the blood flow is adequately restored, the damage will be less.
Usually the inside wall is the first to die. If 50% of that wall thickness dies, the heart muscle at rest no longer contracts normally. There is now at rest a dyssynchrony between the normal wall and the infarcted wall. However, that wall will respond to exercise. A through and through damaged wall will never respond to exercise and even will bulge when the heart contracts. That is called a ventricular aneurysm. In order for a damaged heart to maintain its normal volume per beat, it has to enlarge.
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