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Acute Coronary Syndrome - Topic Overview

How is acute coronary syndrome diagnosed?

A doctor will give you a physical exam and ask about your symptoms and past health. He or she also will ask about your family's health. You will have several tests to find out what is causing your chest pain.

An electrocardiogram can show whether you have angina or have had a heart attack. This test measures the electrical signals that control your heart's rhythm. Small pads will be taped to your chest and other areas of your body. They connect to a machine that traces the signals onto paper. The doctor will look for certain changes on the graph to see if your heart is not getting enough blood or if you are having a heart attack.

A blood test will look for a rise in cardiac enzymes. The heart releases these substances when it is damaged.

In some cases, you might have a test called a cardiac perfusion scan to see if your heart is getting enough blood. It also can be used to check for areas of damage after a heart attack.

How is it treated?

If you call 911, treatment will start in the ambulance with aspirin and other medicines.

In the hospital, the doctor will work right away to return blood flow to your heart. You may get medicines to break up and prevent blood clots. You may get nitroglycerin and other medicines that make your arteries wider. This helps to ease pain and improve blood flow. You also will get oxygen and pain medicine.

Your test results will help your doctor decide about more treatment. If you are having a heart attack, you likely will get medicines to break up clots or have angioplasty (usually with stents) or bypass surgery to improve blood flow to your heart. If you are having unstable angina, you will likely get medicines but you might also have angioplasty with stents.

After you get out of the hospital, you will continue to take medicines that lower your risk of a heart attack. Medicine may include beta-blockers, aspirin or other medicines to prevent blood clots, blood pressure medicine, and statins for cholesterol.

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