Monday, September 20, 2010

What is SUDEP? Sudden Unexplained Death in Epilepsy

http://www.epilepsy.com/epilepsy/sudep_intro/

In 1868 Bacon, an eminent physician, noted the occurrence of ‘sudden death in a fit’ and almost 40 years later Spratling, one of the earliest American neurologists, recognised epilepsy as ‘a disease which destroys life suddenly and without warning through a single brief attack.’ Despite this, in the 1960’s it was suggested that ‘there is no reason why …someone with epilepsy… should not live as long as he would if he did not have epilepsy’ (Livingstone 1963). SUDEP is sudden unexpected death in someone with epilepsy, who was otherwise well, and in whom no other cause for death can be found, despite thorough post mortem examination and blood tests. The definition excludes people dying in status epilepticus and those who drown.

Awareness of SUDEP has increased over recent years, yet in many countries the medical profession has been reluctant to consider SUDEP. Indeed, there is little information on the number of cases in different countries. It has been estimated that the risk of sudden death is almost 24 times higher than for someone without epilepsy. Most people with newly diagnosed epilepsy will stop having seizures, and SUDEP is very rare amongst them. Searching for risk factors in this group would require meticulous follow up of large numbers of people. Studies of SUDEP have therefore usually been conducted in groups of people with more severe forms of epilepsy, such as specialist clinic populations, hospital inpatients or residential groups. The risk of SUDEP is elevated in these populations. It is estimated as between 1:500 and 1:1000 patient-years in community based populations with epilepsy, and even higher in people considered for surgery.


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