Unpredicted Cardiac Death
Sudden cardiac death (sudden arrest) is death resulting from an sudden loss of heart function (cardiac arrest). The victim may or may possibly not have diagnosed heart disease. The time and mode of death are unexpected. It occurs within moments following symptoms appear. One of the most popular reason for patients to die suddenly from cardiac arrest is coronary heart disease (fatty buildups in the arteries that supply blood to the heart muscle).
All identified heart diseases can lead to cardiac arrest or sudden cardiac death. Most of the cardiac arrests that result in sudden death happen when the electrical impulses in the diseased heart develop into rapid (ventricular tachycardia), chaotic (ventricular fibrillation) or both. This irregular heart rhythm (arrhythmia) causes the heart to suddenly stop beating. Some cardiac arrests are on account of extreme slowing of the heart. This is referred to as bradycardia. Bradycardia is widespread in premature infants.
In 90 percent of adult victims of sudden cardiac death, two or more major coronary arteries are narrowed by fatty buildups. Scarring from a prior heart attack is found in two-thirds of victims. When sudden death occurs in young adults, other heart abnormalities are a lot more likely causes. Adrenaline released throughout intense physical or athletic activity generally acts as a trigger for sudden death when these abnormalities are present. Under certain conditions, several heart medications along with other drugs – along with illegal drug abuse – can result in abnormal heart rhythms that cause sudden death.
The term “massive heart attack” is usually wrongly employed within the media to describe sudden death. The term “heart attack” refers to death of heart muscle tissue as a result of the loss of blood supply, not necessarily resulting in a cardiac arrest or the death of the heart attack victim. A heart attack may cause cardiac arrest and sudden cardiac death, but the terms are not synonymous.
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