![]() ![]() Prodromal symptoms are often nonspecific, and even those taken to indicate ischemia (chest pain), a tachyarrhythmia (palpitations), or congestive heart failure symptoms (dyspnea) can only be considered suggestive. 3 Only an ECG or a ventricular electrogram recorded from an implanted device at the time of death can provide definitive information about an arrhythmia. 1 2 Such a rapid death is often attributed to a cardiac arrhythmia, but with the advent of monitoring capabilities from implantable cardioverter-defibrillators (ICDs), it is now well recognized that classifications based on clinical circumstances can be misleading and often impossible, because 40% of sudden deaths can be unwitnessed. ![]() Sudden cardiac death describes the unexpected natural death from a cardiac cause within a short time period, generally ≤1 hour from the onset of symptoms, in a person without any prior condition that would appear fatal. Customer Service and Ordering Information.Stroke: Vascular and Interventional Neurology.Journal of the American Heart Association (JAHA).Circ: Cardiovascular Quality & Outcomes.Arteriosclerosis, Thrombosis, and Vascular Biology (ATVB). ![]()
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