Heart Attack Symptoms & Treatments

Heart Attack

A heart attack occurs when blood flow to a section of heart muscle becomes blocked. If the flow of blood isn’t restored quickly, the section of heart muscle becomes damaged from lack of oxygen and begins to die.

Heart attack is a leading killer of both men and women in the United States. But fortunately, today there are excellent treatments for heart attack that can save lives and prevent disabilities. Treatment is most effective when started within 1 hour of the beginning of symptoms. If you think you or someone you’re with is having a heart attack, call 9–1–1 right away.

Heart Attack Symptoms:
Symptoms of a heart attack include:

Discomfort, pressure, heaviness, or pain in the chest, arm, or below the breastbone
Discomfort radiating to the back, jaw, throat, or arm
Fullness, indigestion, or choking feeling (may feel like heartburn)
Sweating, nausea, vomiting, or dizziness
Extreme weakness, anxiety, or shortness of breath
Rapid or irregular heartbeats
During a heart attack, symptoms last 30 minutes or longer and are not relieved by rest or nitroglycerin under the tongue.

Some people have a heart attack without having any symptoms (a “silent” myocardial infarction). A silent MI can occur in any person, though it is more common among diabetics.

Heart Attack Causes:
A heart attack occurs when one or more of the arteries supplying your heart with oxygen-rich blood (coronary arteries) become blocked. Over time, a coronary artery can become narrowed from the buildup of cholesterol. This buildup — collectively known as plaques — in arteries throughout the body is called atherosclerosis.

During a heart attack, one of these plaques can rupture and a blood clot forms on the site of the rupture. If the clot is large enough, it can block the flow of blood through the artery. When your coronary arteries have narrowed due to atherosclerosis, the condition is known as coronary artery disease. Coronary artery disease is the major underlying cause of heart attacks.

An uncommon cause of a heart attack is a spasm of a coronary artery that shuts down blood flow to part of the heart muscle. Drugs, such as cocaine, can cause such a life-threatening spasm.

A heart attack is the end of a process that typically evolves over several hours. With each passing minute, more heart tissue is deprived of blood and deteriorates or dies. However, if blood flow can be restored in time, damage to the heart can be limited or prevented.

Heart Attack Treatments & Drugs:
Once you reach a hospital emergency room and it’s clear you’re having a heart attack, you may be treated with medications, undergo an invasive procedure or both — depending on the severity of your condition and the amount of damage to your heart.

Medications
With each passing minute after a heart attack, more heart tissue loses oxygen and deteriorates or dies. The main way to prevent heart damage is to restore blood flow quickly.

Medications given to treat a heart attack include:

• Aspirin. You may be given aspirin by emergency medical personnel soon after they arrive or as soon as you get to the hospital. Aspirin reduces blood clotting, thus helping maintain blood flow through a narrowed artery.
• Thrombolytics. These drugs, also called clotbusters, help dissolve a blood clot that’s blocking blood flow to your heart. The earlier you receive a thrombolytic drug following a heart attack, the greater the chance you will survive and lessen the damage to your heart.
• Superaspirins. Doctors in the emergency room may give you other drugs that are somewhat similar to aspirin to help prevent new clots from forming. These include medications such as clopidogrel (Plavix) and others called platelet IIb/IIIa receptor blockers.

Other blood-thinning medications. You’ll likely be given other medications, such as heparin, to make your blood less “sticky” and less likely to form more dangerous clots. Heparin is given intravenously or by an injection under your skin and is usually used during the first few days after a heart attack.

• Pain relievers. If your chest pain or associated pain is great, you may receive a pain reliever, such as morphine, to reduce your discomfort.
• Nitroglycerin. This medication, used to treat chest pain (angina), temporarily opens arterial blood vessels, improving blood flow to and from your heart.
• Beta blockers. These medications help relax your heart muscle, slow your heartbeat and decrease blood pressure making your heart’s job easier. Beta blockers can limit the amount of heart muscle damage and prevent future heart attacks.
• Cholesterol-lowering medications. Examples include statins, niacin, fibrates and bile acid sequestrants. These drugs help lower levels of unwanted blood cholesterol and may be helpful if given soon after a heart attack to improve survival.

Surgical and other procedures
In addition to medications, you may undergo one of the following procedures to treat your heart attack:

Coronary angioplasty and stenting. Emergency angioplasty opens blocked coronary arteries, letting blood flow more freely to your heart. Doctors insert a long, thin tube (catheter) that’s passed through an artery, usually in your leg, to a blocked artery in your heart. This catheter is equipped with a special balloon tip. Once in position, the balloon tip is briefly inflated to open up a blocked coronary artery. At the same time, a metal mesh stent may be inserted into the artery to keep it open long term, restoring blood flow to the heart. Depending on your condition, your doctor may opt to place a stent coated with a slow-releasing medication to help keep your artery open.

Coronary angioplasty is done at the same time as a coronary catheterization (angiogram), a procedure that doctors do first to locate narrowed arteries to the heart. When getting an angioplasty for heart attack treatment, the sooner the better to limit the damage to your heart.

Coronary artery bypass surgery. In rare cases, doctors may perform emergency bypass surgery at the time of a heart attack. Usually, your doctor may suggest that you have bypass surgery after your heart has had time to recover from your heart attack. Bypass surgery involves sewing veins or arteries in place at a site beyond a blocked or narrowed coronary artery (bypassing the narrowed section), restoring blood flow to the heart.
Once blood flow to your heart is restored and your condition is stable following your heart attack, you may be hospitalized for observation. Visitors are usually limited to family members and close friends.