A mild heart attack is a type of cardiac arrest that does not cause permanent heart damage as it affects a small part of the cardiac muscles, according to Better Medicine. Usually, it is characterized by blockage of a small artery supplying blood to a small portion of the heart muscle. A mild heart attack lasts for a short period.
Heart attacks occur when blood supply to the heart is blocked, depriving the heart tissues of oxygen, explains Better Health. If the blockage persists, the heart tissue dies, resulting in a cardiac arrest. In a mild heart attack, there is partial blockage of the blood circulation to the heart muscles. The cardiac muscles continue receiving oxygen, albeit in limited quantities; hence, there is no permanent damage to heart muscles.
Although a mild heart attack does not cause permanent cardiac muscle damage, it is still a serious heart condition that requires urgent medical attention, notes Better Health. Unless it is it arrested, a mild heart attack can result in more serious cardiac damage. Even though a mild heart attack affects a small portion of the heart muscle and lasts briefly, it has the potential to cause life-threatening symptoms, such as arrhythmia and heart failure.