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Coronary artery disease, heart attack - each type of heart disease has different symptoms, although many heart problems have similar symptoms. The symptoms you experience depend on the type and severity of your heart condition. Learn to recognize your symptoms and the situations that cause them. Call your doctor if you begin to have new symptoms or if they become more frequent or severe.

The most common symptom in Woman is angina. Angina can be described as a discomfort, heaviness, pressure, aching, burning, fullness, squeezing or painful feeling in your chest. It can be mistaken for indigestion or heartburn. Angina is usually felt in the chest, but may also be felt in the shoulders, arms, neck, throat, jaw or back.

Other symptoms that can occur with coronary artery disease include:

Shortness of breath
Palpitations (irregular heart beats, skipped beats or a "flip-flop" feeling in your chest)
A faster heartbeat
Weakness or dizziness
Nausea
Sweating
Discomf ort, 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 typically last 30 minutes or longer and are not relieved by rest or oral medications (medications taken by mouth). Initial symptoms can start as a mild discomfort that progresses to significant pain.

Some people have a heart attack without having any symptoms (a "silent" MI). A silent MI can occur among all people, though it occurs more often among diabetics.

If you think you are having a heart attack, DO NOT DELAY. Call for emergency help (dial 911 in most areas). Immediate treatment of a heart attack is very important to lessen the amount of damage to your heart.

The heart muscle requires a constant supply of oxygen-rich blood to nourish it. The coronary arteries provide the heart with this critical blood supply. If you have coronary artery disease, those arteries become narrow and blood cannot flow as well as it should. Fatty matter, calcium, proteins and inflammatory cells build up within the arteries to form plaques of different sizes. The plaque deposits are hard on the outside and soft and mushy on the inside.

When the plaque's hard, outer shell cracks (plaque rupture), platelets (disc-shaped particles in the blood that aid clotting) come to the area, and blood clots form around the plaque. If a blood clot totally blocks the artery, the heart muscle becomes "starved" for oxygen. Within a short time, death of heart muscle cells occurs, causing permanent damage. This is called a myocardial infarction (MI), or heart attack.

While it is unusual, a heart attack can also be caused by a spasm of a coronary artery. During coronary spasm, the coronary arteries restrict or spasm on and off, reducing blood supply to the heart muscle (ischemia). It may occur at rest and can even occur in people without significant coronary artery disease.

Each coronary artery supplies blood to a region of heart muscle. The amount of damage to the heart muscle depends on the size of the area supplied by the blocked artery and the time between injury and treatment.

Healing of the heart muscle begins soon after a heart attack and takes about eight weeks. Just like a skin wound, the heart's wound heals and a scar will form in the damaged area. But, the new scar tissue does not contract or pump as well as healthy heart muscle tissue. So, the heart's pumping ability is lessened after a heart attack. The amount of lost pumping ability depends on the size and location of the scar.

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