Your arteries carry blood, oxygen and nutrients to the heart and to the rest of the body. A heart attack occurs when an artery of the heart (also known as a “coronary artery”) is suddenly closed or blocked by a blood clot.
Although the closure happens suddenly, it often results from plaque that has built up in the arteries over time. This process is called atherosclerosis.
It is also known as hardening of the arteries. When the artery closes, the supply of blood and oxygen to the heart drops suddenly and sharply. This lack of oxygen causes damage to the heart.
Signs and symptoms
Most of the signs and symptoms of a heart attack are the same for both men and women. Someone having a heart attack may feel:
chest pain, which may also include feelings of:
-crushing pain

spreading pain, which may spread out:
-from the chest area
-down one or both arms
-to the neck, jaw or shoulders.

shortness of breath
paleness, sweating or overall weakness
nausea, vomiting and maybe indigestion
anxiety or fear.

If you notice any of these symptoms:
-Tell someone.
-Call 911
or your local emergency number to get help right away.