Anderson Richard C E, Walker Marion L, Viner John M, Kestle John R W
Division of Pediatric Neurosurgery, Primary Children's Medical Center, Salt Lake City, Utah, USA.
J Neurosurg. 2004 Nov;101(2 Suppl):222-5. doi: 10.3171/ped.2004.101.2.0222.
Inadvertent adjustments and malfunctions of programmable valves have been reported in cases in which patients have encountered powerful electromagnetic fields such as those involved in magnetic resonance imaging, but the effects of small magnetic fields are not well known. The authors present a case in which a child playing with a collection of commercially available toy magnets altered the pressure setting of an implanted valve and may have caused its permanent malfunction.
在一些病例中，患者遇到强大的电磁场，如磁共振成像中的电磁场，已报告发生了可编程阀门的意外调节和故障，但小磁场的影响尚不清楚。作者报告了一个病例，一名儿童玩一堆市售的玩具磁铁时改变了植入阀门的压力设置，并可能导致其永久性故障。
