Gradual heart damage Coronary artery disease causes gradual heart damage over time. Sudden heart damage A heart attack damages heart muscle suddenly. Related Information Heart Failure. References Citations Yancy CW, et al. Journal of the American College of Cardiology , 62 16 : e—e Management of patients with heart failure with reduced ejection fraction. In DL Mann et al. Philadelphia: Saunders. Yancy CW, et al. Journal of the American College of Cardiology, 62 16 : e—e Credits Current as of: August 31, Top of the page Next Section: Related Information.
Previous Section: References Top of the page. Current as of: August 31, Journal of the American College of Cardiology , 62 16 : ee Blockages in your coronary arteries that limit blood flow to your heart muscle.
It weakens or damages heart muscle and impairs the muscle's ability to pump. The heart muscle is weakened, which affects its ability to pump properly. The heart works harder to pump against increased pressure, which weakens the muscle. The heart works harder to pump blood through the narrowed valve, weakening the muscle.
Mitral valve doesn't close properly, causing leakage on left side of the heart. Ischemia is the medical term for what happens when your heart muscle doesn't get enough oxygen.
Ischemia may happen only once in a while, such as when you are exercising and your heart muscle needs more oxygen than it normally does. Ischemia can also be ongoing chronic if your coronary arteries are so narrowed that they limit blood flow to your heart all the time. This chronic lack of oxygen can gradually damage portions of your heart muscle.
Your heart can slowly lose its ability to pump blood to your body. Chronic ischemia can allow your heart muscle to get just enough oxygen to stay alive but not enough oxygen to work normally. Ongoing poor blood flow to the heart muscle reduces the heart's ability to contract and causes it to pump less blood during each beat. The less blood your heart pumps out to your body, the less blood it is actually pumping back to itself through the coronary arteries.
The end result is that heart failure makes ischemia worse, which in turn makes heart failure worse. Mitral valve regurgitation can gradually lead to heart failure. With this problem, the mitral valve doesn't close properly, and blood leaks back into the left atrium when the left ventricle contracts.
Over time, the left ventricle pumps harder to move the extra blood that has returned to it from the left atrium. The ventricle stretches and gets bigger to hold the larger volume of blood. Gradual weakening of the left ventricle may cause heart failure. High blood pressure can also gradually lead to heart failure. To pump against your high blood pressure, your heart has to increase the pressure inside your left ventricle when it pumps.
After years of working harder to pump blood, your ventricle may begin to weaken. When this happens, the pressure inside the weakened left ventricle will cause the ventricle to expand, stretching out the heart muscle.
This damaging process is called dilation, and it impairs your heart's ability to squeeze forcefully. The result is heart failure. A heart attack damages heart muscle suddenly.
A heart attack can cut off the flow of blood to your heart muscle so that your heart muscle doesn't get any oxygen. Your care plan will depend on if your low ejection fraction is linked to another heart condition.
We may recommend:. What is low ejection fraction? Low ejection fraction symptoms If you have two or more signs of low ejection fraction, particularly if you already have a heart condition, see your doctor right away. Symptoms can include: Fatigue Feeling of fullness or bloating Heart palpitations , which feel like fluttering in the chest Loss of appetite Nausea Reduced ability to exercise Shortness of breath Swelling Low ejection fraction causes A low ejection fraction is often a sign of an underlying heart disease.
These tests may include: Radiographic imaging , such as a CT scan or MRI Echocardiogram , a heart ultrasound Nuclear cardiology imaging , which uses a safe dose of radioactive material to evaluate blood flow through your heart Cardiac catheterization , a minimally invasive procedure where we gently guide a thin tube, or catheter, with a tiny camera through a blood vessel to your heart Find out more about our heart and vascular testing and diagnosis.
Low ejection fraction treatment Not only are we specialized in treating all kinds of heart conditions, but we also specialize in tailoring a treatment plan just for you. The purpose of this study was to determine whether an exercise-induced decrease in ejection fraction in patients with coronary artery disease and left ventricular dysfunction at rest represents ischemia or the nonspecific response of a compromised left ventricle to exercise stress.
Accordingly, radionuclide ejection fraction responses of patients with coronary artery disease and an ejection fraction at rest of less than 0. The significance of the ejection fraction response in the group with coronary artery disease was further examined by relating it to the angiographic extent of coronary artery disease, severity of angina, incidence of chest pain and electrocardiographic ST segment depression during exercise and long-term prognosis.
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