مقاله حمله قلبی

مقاله حمله قلبی مقاله حمله قلبی

دسته : پزشکی

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مقاله حمله قلبی

مقاله حمله قلبی

List of Subject
 

Title:

 

What is Heart Attack?

 

What Causes a Heart Attack?

 

How is a Heart Attack Diagnosed?

 

How Can I Prevent a Heart Attack?

 

Resources

 

What Is a Heart Attack?

A heart attack occurs when the supply of blood and oxygen to an area of heart muscle is blocked, usually by a clot in a coronary artery. Often, this blockage leads to arrhythmias (irregular heartbeat or rhythm) that cause a severe decrease in the pumping function of the heart and may bring about sudden death. If the blockage is not treated within a few hours, the affected heart muscle will die and be replaced by scar tissue.

A heart attack is a life-threatening event. Everyone should know the warning signs of a heart attack and how to get emergency help. Many people suffer permanent damage to their hearts or die because they do not get help immediately.

Each year, more than a million persons in the U.S. have a heart attack and about half (515,000) of them die. About one-half of those who die do so within 1 hour of the start of symptoms and before reaching the hospital.

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