What is a Heart Attack?
Myocardial infarction is dying of the small or large part of heart muscle caused by insufficient blood supply.
What Causes a Heart Attack?Arteriosclerosis is a gradual process of creating cholesterol layers on the arteries walls. Cholesterol deposits cause thickening of artery walls, and reducing their volume. These arteries cannot deliver enough blood for the normal functioning of body parts.
Arteriosclerosis may be hidden for years or decades, not causing any symptoms or health problems. It can appear even in the teenage age, but symptoms usually appear in the mature period.
Arteriosclerosis occurs before heart attack in 90-95% of cases.
Secondary factors that cause heart attack include:
- Age – heart attack most often affects people of middle and old age.
- Gender - men are more often affected by heart attack than women. Estrogen prevents the development of arteriosclerosis in women.
- Hereditary factor
- Profession - there is no specific profession that leads to a heart attack. But, people with stressful and responsible job are more prone to this disease.
- Being overweight - is often associated with the development of arteriosclerosis.
- Nicotine – nicotine is a Vasoconstrictor which contains chemicals that damage the blood vessels walls.
Symptoms of a Heart Attack
Heart attack causes a strong, sudden and prolonged pain in the area of the heart. It takes at least half an hour and sometimes takes several hours.
Chest pain is often described as "pressure" or "tightening". It can be spread to the left (less commonly right) shoulder and arm, neck and jaw. Some patients feel pain in the upper part of the abdomen.
Other symptoms of heart attack include: pale or dewy skin and sweating, nausea and vomiting, and shortness of breath.