Heart attack is the death of a segment of heart muscle caused by the loss of blood supply.
A heart attack occurs when one or more of your coronary arteries become blocked. Over time, a coronary artery can narrow from the buildup of various substances, including cholesterol (atherosclerosis). This condition, known as coronary artery disease, causes most heart attacks.
During a heart attack, one of these plaques can rupture and spill cholesterol and other substances into the bloodstream. A blood clot forms at the site of the rupture. If large enough, the clot can completely block the flow of blood through the coronary artery.
Another cause of a heart attack is a spasm of a coronary artery that shuts down blood flow to part of the heart muscle. Use of tobacco and of illicit drugs, such as cocaine, can cause a life-threatening spasm. A heart attack can also occur due to a tear in the heart artery (spontaneous coronary artery dissection).
Symptoms of a heart attack
Common heart attack signs and symptoms include:
or a squeezing or aching sensation in your chest or arms that may spread to your neck, jaw or backNausea, indigestion,
heartburn or abdominal painShortness of breath
Lightheadedness or sudden dizziness
Not all people who have heart attacks have the same symptoms or have the same severity of symptoms. Some people have mild pain; others have more severe pain. Some people have no symptoms, while for others, the first sign may be sudden cardiac arrest. However, the more signs and symptoms you have, the greater the likelihood you're having a heart attack.
Some heart attacks strike suddenly, but many people have warning signs and symptoms hours, days or weeks in advance. The earliest warning may be recurrent chest pain (angina) that's triggered by exertion and relieved by rest. Angina is caused by a temporary decrease in blood flow to the heart.
A heart attack differs from a condition in which your heart suddenly stops (sudden cardiac arrest, which occurs when an electrical disturbance disrupts your heart's pumping action and causes blood to stop flowing to the rest of your body). A heart attack can cause cardiac arrest, but it's not the only cause.
Did you feel this symtoms? If you experience these symptoms, or witness another person with them, call the ambulance
Heart attack warning signs in women
TAKE CARE YOUR HEART ALWAYS LET THE DOCTOR KNOW WHAT IS YOUR FEELING ..
Thanks for reading friend ...hope my topic will help you. Edited by honey_lyn / 16 Nov 2015 04:42