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www.reference.com/world-view/can-heart-attack-3e16a721abc5c492

A person can have a heart attack and not know it because not all heart attacks produce recognizable symptoms, according to the American Heart Association. These are known as silent heart attacks.

www.reference.com/article/happens-heart-attack-ec198fd17b8acfc4

During a heart attack, blood flow to a section of the heart muscle is blocked suddenly, causing lack of oxygen, states the National Heart, Lung, and Blood Institute. The blockage is most often caused by coronary heart disease, a condition in which plaque buildup occurs inside an artery.

www.reference.com/article/causes-heart-attacks-32118607a72f869d

According to Medical News Today, heart attacks are caused by many factors, including poor dietary habits, high cholesterol, diabetes, smoking, obesity, sendentarism and chronic stress. Heart attacks are also caused by old age, genetics, high blood pressure and unhealthy gut bacteria. People who live

www.reference.com/article/can-tell-having-heart-attack-b2440b58b2e9b181

Typical symptoms of a heart attack include chest discomfort or pain, shortness of breath, upper body pain, stomach pain, anxiety, lightheadedness, sweating, nausea and vomiting. The symptoms that are experienced by one individual can vary immensely from those experienced by another. For instance, on

www.reference.com/article/causes-heart-attacks-cf2704ca028ff3f1

Causes of heart attacks include coronary artery disease and a coronary artery spasm, according to Mayo Clinic. Spontaneous coronary artery dissection, which is a condition in which one of the heart arteries tears, may also result in heart attack.

www.reference.com/article/should-think-having-heart-attack-cbe4a3e1003ea33a

It is best to immediately call 911 upon any suspicion of a heart attack, recommends WebMD. Driving oneself to the hospital should be avoided unless no other option is available, as loss of consciousness and subsequent accident can occur due to heart attack. If a patient's heart stops along the way t

www.reference.com/article/signs-heart-attack-a2558b06e8657261

The most characteristic symptom of a heart attack, according to the American Heart Association, is a severe, crushing pain in the chest that may radiate outward to the shoulders, arms and neck. Heart attacks can also cause the victim to feel short of breath or panicky and might induce dizziness and

www.reference.com/article/happens-during-heart-attack-8463ac67eace441f

During a heart attack, a blood clot completely obstructs the artery and deprives the heart of oxygen supply, causing heart muscle cells to die and leading to permanent damage, explains WebMD. Blood clots form when a plaque ruptures and platelets surround the area.

www.reference.com/article/symptoms-heart-attack-4c2baf69b8a134d0

The symptoms of an acute myocardial infarction vary by patient and by case. The most common symptom of a heart attack is pressure or pain in the chest that sometimes radiates outward into the arm, jaw, lower abdomen or back. According to Mayo Clinic, the pain of a heart attack might briefly diminish

www.reference.com/article/treatment-heart-attack-bc920a2d495f624a

According to the National Heart, Lung, and Blood Institute, heart attack treatments include oxygen, aspirin therapy and nitroglycerin. Aspirin therapy helps to prevent blood clots, while nitroglycerin helps to stabilize blood flow through the coronary system. In addition to blood clotting medication