看3D电视的孩童抽搐风险低


  【24drs.com】首次有证据认为,新型的3D家庭娱乐系统对患有癫痫的孩童并不危险。
  
  德国Vogtareuth Schon Klinik的Gerhard Kluger医师表示,这个新科技不太可能引起伤害,但他也指出,这是初步研究结果,更大型的研究结果可能不同,看更久电视也可能有不同结果。
  
  3D电视制造厂之一的三星曾经提出有关此一风险的预防性警告,该公司声明指出,有些观众面对某些电视或影片的闪动影像声光时可能会出现癫痫性抽搐或中风。
  
  不过,发表于美国癫痫协会(AES)第65届年会的研究再度提出保证。
  
  研究者探讨了有癫痫风险的150名孩童,包括84名有抽搐的诊断证明,只有1人在看电视后不久出现抽搐。
  
  研究对象平均年纪12岁,研究者计画继续招募约500名孩童。
  
  虽然这个新科技看来不会加大抽搐风险,这篇研究中,戴著快门镜观看50寸3D电浆电视的多数孩童并不喜欢它们,多达17%表示有恶心、头痛与头昏。
  
  表、对刺激的反应(n = 150人)
结果 光刺激 3D电视
光激化反应 15 0
光驱动 4 0
抽搐 0 1
癫痫样反应 0 3
其它副作用 15 26

  特异性大发作的3名病患其癫痫样反应增加,但是没有临床征兆或不适,也没有次临床抽搐。
  
  根据研究者表示,电视引起的抽搐看来和这项科技无关,但是,任何电视的影像色彩、对比、类型和闪烁度都可能是问题所在。
  
  9月时,另一个研究团队在Seizure期刊的报告也指出,3D诱发的风险并没有比传统电视大。
  
  英国诺丁罕大学医院的Michaella Prasad医师等研究团队建议在观看传统电视时不要戴3D眼镜,以免眼睛闪烁。Kluger医师表示,重要的是我们不必过度限制癫痫病童,他们需要的是尽可能享受正常生活。
  
  资料来源:http://www.24drs.com/professional/list/content.asp?x_logon=W&x_idno=6668&x_classno=0
  
  
  

Seizure Risk Low for Children Watching 3D Television

By Allison Shelley
Medscape Medical News

December 5, 2011 (Baltimore, Maryland) — First evidence suggests that new 3-dimensional (3D) home entertainment systems are not dangerous for young people with epilepsy.

"The new technology is very unlikely to cause harm," coauthor Gerhard Kluger, MD, from Schon Klinik in Vogtareuth, Germany, told Medscape Medical News, although he cautioned that the results of the study are preliminary and could change with a larger sample and more time in front of the television.

One 3D television manufacturer, Samsung, has issued a precautionary warning about the risk. "Some viewers may experience an epileptic seizure or stroke when exposed to flashing images or lights contained in certain television pictures or video games," the company states.

However, first results presented here at the American Epilepsy Society (AES) 65th Annual Meeting are reassuring.

Investigators looked at 150 children at risk for epilepsy, including 84 with documented seizures. Only 1 patient had a seizure shortly after watching television.

The mean age for the participants was 12 years, and the researchers plan to continue recruiting to about 500 children.

Although the new technology does not appear to heighten seizure risk, many of the children in this study watching a 50-inch 3D plasma television with shutter glasses did not like them. A large number, 17%, reported nausea, headache, and dizziness.

Table. Reactions to Stimulation (n = 150)

Outcome Photostimulation 3D Television
Photoparoxysmal reactions 15 0
Photic driving 4 0
Seizure 0 1
Epileptiform activity 0 3
Other unwanted effects 15 26

Three patients with idiopathic generalized epilepsy showed an increase in epileptiform activity, but no clinical signs or discomfort and no subclinical seizures.

Seizures provoked by television do not appear to be associated with the technology, according to investigators, but with content such as color, contrast, pattern, and flicker, which are factors that can be problematic on any television.

In September, another research team reporting in Seizure also claimed that the risk of triggering an event is not greater with 3D technologies than regular television.

"We suggest removing 3D glasses when watching conventional [television] to prevent the eyes from picking up flicker," noted the group, led by Michaella Prasad, MD, from Nottingham University Hospitals in the United Kingdom.

"It's very important that we don't overly restrict children with epilepsy," Dr. Kluger said. "They need to do as much as possible and enjoy normal lives."

The investigators have disclosed no relevant financial relationships.

American Epilepsy Society (AES) 65th Annual Meeting: Abstract 2.100. Presented December 4, 2011.

    
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