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During a heart attack, a lack of blood flow causes the tissue in the heart muscle to die. A heart attack is also called a myocardial infarction. Prompt treatment is needed for a heart attack to prevent death. Call 911 or emergency medical help if you think you might be having a heart attack.
Myocardial ischemia occurs when blood flow to the heart muscle (myocardium) is obstructed by a partial or complete blockage of a coronary artery by a buildup of plaques (atherosclerosis). If the plaques rupture, you can have a heart attack (myocardial infarction).
A heart attack also is known as a myocardial infarction. Unstable angina occurs when blood flow to the heart decreases. It's not severe enough to cause cell death or a heart attack. But the reduced blood flow may increase your risk of a heart attack.
Some of the major risk factors for a heart attack — high blood cholesterol, high blood pressure and diabetes — don't cause early symptoms. Manage blood pressure, cholesterol and blood sugar. Ask your provider how often you need to have your blood pressure, blood sugar and cholesterol levels checked. Control stress.
Myocardial infarction with no obstructive coronary artery disease (MINOCA) can be an invisible diagnosis and is often untreated. MINOCA represents 6% to 15% of all myocardial infarctions in patients. A new clinical practice update published in the Canadian Journal of Cardiology offers guidance for diagnosing the disease. "This clinical practice ...
Causes. Angina is caused by reduced blood flow to the heart muscle. Blood carries oxygen, which the heart muscle needs to survive. When the heart muscle isn't getting enough oxygen, it causes a condition called ischemia. The most common cause of reduced blood flow to the heart muscle is coronary artery disease (CAD).
Plaque can cause an artery to become narrowed or blocked. If a plaque ruptures, a blood clot can form. Plaque and blood clots can reduce blood flow through an artery. Coronary artery disease is caused by the buildup of fats, cholesterol and other substances in and on the walls of the heart arteries.
Uncontrolled high blood pressure is the most common cause of left ventricular hypertrophy. Complications include irregular heart rhythms, called arrhythmias, and heart failure. Treatment of left ventricular hypertrophy depends on the cause. Treatment may include medications or surgery.
Your symptoms and test results can help your health care team make a diagnosis of acute coronary syndrome. This information also can help classify your condition as a heart attack or unstable angina. Other tests may be done to learn more about your condition and rule out other causes of symptoms.
Causes. The cause of spontaneous coronary artery dissection is unknown. Risk factors. Risk factors for SCAD include: Being female. SCAD can happen to anyone. But it tends to affect women more than men. Childbirth. Some women who have had SCAD have recently given birth. This may be due to changes in hormones and stress on the blood vessels.