How Does A Heart Attack Occur?

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When does a heart attack occur?

Atherosclerosis means the thickening and clogging of heart arteries. Some of its causes include smoking, obesity, and stress. Repeated chest pain is a symptom of atherosclerosis, but most patients only find out that they have blocked arteries after an attack.

A myocardial attack occurs when the heart is no longer supplied with blood because of blockages in the coronary arteries.

The first signs include pain or pressure in the chest, tightness in the right lower back, neck, arm, or jaw, nausea, indigestion, heartburn, fatigue and anxiety, shortness of breath, irregular or rapid heartbeat.

What happens when the heart starts "running"?

Normally, heartbeats are rhythmic. They sometimes become irregular. Typically, cardiac arrhythmias are harmless and go away quickly, but some types can even lead to a loss of consciousness. There is also the risk of the heart-stopping and thus requiring resuscitative measures.

Ischemic cardiomyopathy describes changes in the myocardium. A weak heart has no power to pump blood throughout the body, so the blood accumulates in the lower chambers of the heart (ventricles), which expand. The cardiac muscle loses its shape and becomes weaker.