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Tampilkan postingan dengan label Epilepsy. Tampilkan semua postingan
Tampilkan postingan dengan label Epilepsy. Tampilkan semua postingan

Jumat, 14 Oktober 2011

'Refer more for epilepsy surgery'

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14 October 2011 Last updated at 00:44 GMT Man holding head in hands Surgical treatment for epilepsy is being used more and more People who cannot control their epilepsy with medication should be referred sooner for surgery, suggests a study in The Lancet.

The University College London study found that 47% of patients who had surgery were free of seizures after 10 years.

It tracked 615 adults annually over an average of eight years.

But experts say people should be realistic about the risks and benefits of this kind of surgery.

Surgical treatment for epilepsy is being used more and more.

Two-thirds of people with epilepsy have the condition well controlled with medication and experience no side-effects.

The other third, for whom medication does not work, could be eligible for surgery.

The most common type of surgery undertaken on people in the study was temporal lobe surgery, which focuses on the area of the brain behind the forehead between the ear and the eye, where most seizures originate.

Researchers who carried out the study, published in The Lancet, reported that 63% of all patients were free of seizures two years after surgery (excluding simple partial seizures), 52% after five years and 47% after 10 years.

Those with simple partial seizures (SPS) in the first two years after temporal lobe surgery were two-and-a-half times more likely to experience subsequent seizures than those who experienced no SPS.

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Clinical practice needs to change with the early referral of appropriate patients”

End Quote Dr Ahmed-Ramadan Sadek and Professor William Peter Gray This has implications for decisions to stop taking anti-epileptic medication, say the authors.

They found that a relapse was less likely the longer a person was free of seizures after surgery, and more likely the longer seizures continued after surgery.

Realistic about risks

Most patients who were seizure-free after surgery still chose to remain on an anti-epileptic drug of some kind.

John Duncan, medical director at the Epilepsy Society and professor of neurology at University College London's Institute of Neurology, which carried out the study, said the study gave a realistic view of the long-term outcomes of surgery for epilepsy.

"It means people should consider surgery sooner rather than later, while being realistic about the risks too."

The study says that the selection process for surgery and surgical methods need to improve to increase success rates and to more accurately identify those who will not benefit from surgery.

Prof Duncan said the threshold for surgery had come down over the past 20 years.

"Surgery used to be offered to someone having three or four seizures a month. Now it could be offered to someone having one seizure a month, who is in employment but who is experiencing side-effects from the drugs.

"So the stakes are higher. The balance of risk and benefit has changed as surgery is offered to those less severely affected."

Commenting on the findings of the study in The Lancet, Dr Ahmed-Ramadan Sadek and Professor William Peter Gray from the Wessex Neurological Centre at the University of Southampton said the study validated the long-term effectiveness of epilepsy surgery.

But there were still hurdles to be overcome, they said.

"The median duration of epilepsy before surgery in this study was 20 years. In view of the long-term results of surgery shown, clinical practice needs to change with the early referral of appropriate patients."



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Senin, 03 Oktober 2011

Science Diction: The Origin Of The Word 'Epilepsy'

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Humans have long suffered from epilepsy, the neurological disorder hallmarked by sudden seizures. Medical historian Howard Markel discusses the condition's names through the millenia, from the "sacred disease" of ancient texts to its description as "the falling sickness" in Shakespeare's Julius Caesar.

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IRA FLATOW, host: Up next, it's time for our monthly episode of Science Diction, where we explore the origins of scientific words with Howard Markel, professor of the history of medicine at the University of Michigan in Ann Arbor. Welcome to SCIENCE FRIDAY. Welcome back.

HOWARD MARKEL: Hello, Ira.

FLATOW: Tell us what the word is today. Is it...

MARKEL: The word today is epilepsy.

FLATOW: Epilepsy.

MARKEL: A very odd word. It's - as we know today, of course, it's an abnormal firing of neurons in the brain that leads to some abnormal movements of one part of the body or another, depending on what part of the brain is affected. But for a long time, that disease was terribly feared, and many people thought it was a sacred disease, that somehow people were struck by either a god or a devil to have this uncontrollable movement. And it's very frightening to watch, actually, and so people were very nervous when they saw other people seize.

FLATOW: Mmm. It seems like, at one point or another, Hippocrates described every disease and disorder out there.

MARKEL: He did. You could always rely on Hippocrates. You know, there is a Greek - word - there's always, there's many Greek words, actually.

(SOUNDBITE OF LAUGHTER)

MARKEL: But this one, epilambanem - in len, there's epilepsia - and that literally means to seize or to be taken hold of. And Hippocrates wrote a wonderful treatise called "On the Sacred Diseases." And he said, you know, he described epilepsy to a T because he was such a good observer, but he said this disease is no more sacred than any other disease.

It's affecting some part of the brain, and he explained it in the way he understood the body in terms of four bodily humors and so on. But he was the first one to actually strike out against it being a part of evil or doing bad or a weakness of character or something like that. And he did not like that name. Later on, it became the falling sickness, and that's what it was called for millennia. And, really, even in the English language, for a long time it was referred to as the falling sickness, but that all changed around 1578.

FLATOW: Mm-hmm. I'm Ira Flatow. This is SCIENCE FRIDAY from NPR, talking with Howard Markel about the definition of the word epilepsy. When did anybody - you say it's a falling sickness. Is that because they were able to define it as a real illness?

MARKEL: Well, yeah. I mean, now epilepsy, we know, is really many disorders...

FLATOW: Right.

MARKEL: ...40 or 50 disorders that include seizures. But when people suffered from what used to be called grand mal seizures or, you know, generalized seizures, they would often fall down. And it struck them, and they fell down or they started seizing. And it was not a bad name. But Henry Lyte in 1578 - he was a famous British botanist - translated another botanist book called "Cruydeboeck" by Rembert Dodoens. He was a Flemish botanist. And there were some recipes of how to treat seizures in there. And Lyte preferred the word epilepsy to falling sickness, and so he used that translation. But, you know, it took another couple of decades.

And it wasn't - of course, you know, if you talk about the Greeks and the Bible, then you have to have Shakespeare. Shakespeare described epilepsy in 1599 in his famous play "Julius Caesar." Now, Julius Caesar did have epilepsy, and Cassius describes him as having, quote, "the falling sickness." But what's really neat is, about a few years later in 1603, in "Othello," Shakespeare describes him as raging and foaming as if he has fallen into epilepsy. And, again, the following year in 1604, in "King Lear," Kent talks to Oswald and says, a plague upon your epileptic visage. That would be a good thing in the playground to say to someone you don't like. But after that, epilepsy really took hold, and it became the way we describe this falling sickness.

FLATOW: Yeah. And a lot of famous historical people had it.

MARKEL: Yeah, epilepsy, or at least seizures. You know, there was Julius Caesar, Napoleon, Dostoyevsky, my favorite - one of my favorite novelists. And, in fact, he gave his character Raskolnikov in "Crime and Punishment" epilepsy, as well. And probably the most humorous if you're an Abbott and Costello fan, Bud Abbott had epilepsy.

FLATOW: Had no idea.

MARKEL: Yeah. He was not on first when it came to that problem.

(SOUNDBITE OF LAUGHTER)

FLATOW: I'm glad you said it and I didn't, because I would have.

(SOUNDBITE OF LAUGHTER)

FLATOW: Do we know, actually, what causes epilepsy?

MARKEL: Well, it depends on what type of epilepsy you have and what part of the brain has been affected. There are a number of causes. For example, if you injure your brain, say you hit your head against something or - and you caused some scarring of the brain tissue, that could be a cause. But so, too, can tumors or metabolic disorders. There are a number of causes that cause the syndrome of epilepsy.

FLATOW: Is it an easy word to research?

MARKEL: Well, yeah, it is. I mean, you know, you start with the Oxford English Dictionary, as I always do, and then you work your way back, and then you start finding out who these people are. So, Hippocrates is easy, and I had known...

FLATOW: Yeah.

MARKEL: ..."On the Sacred Diseases" for my days in graduate school. But I got to meet Henry Lyte along the way, and it's always a great excuse to read Shakespeare.

FLATOW: Yeah. And it's interesting that Shakespeare did incorporate it.

MARKEL: He did. And there's so many, I mean, he was such a wonderful observer of human nature and things that affected human beings. And so there's lots of medicine and science to be described in the plays of Shakespeare.

FLATOW: Yeah. Well, Howard, once again, you've done it again.

MARKEL: Well, thank you, Ira.

FLATOW: When you figure out what that is, you let me know.

(SOUNDBITE OF LAUGHTER)

MARKEL: Yeah. We'll see who's on first then, huh?

FLATOW: All right. Have a good weekend. Howard Markel is professor of the history of medicine at the University of Michigan in Ann Arbor, also director of the Center for the History of Medicine there. And if you want to read more about epilepsy, check out our website. It's sciencefriday.com. And we'll give you a whole bunch of stuff there.

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