ScienceDaily (Mar. 16, 2009) — Stun guns, in certain circumstances, may result in brain-specific complications such as seizures, according to a new case report published in the Canadian Medical Association Journal.

An analysis of an incident where a previously well police officer in his 30s was mistakenly hit by a taser shot with 2 barbs in the upper back and head meant for a suspect indicates that seizures may occur and should be considered an adverse event related to the use of these devices.

After the officer was hit, he collapsed and lost consciousness, not breathing, eyes rolled upward, foaming at the mouth, arms and legs jerking for about 1 minute and then confused for many minutes afterward. These symptoms "differentiate the episode from the usual transient incapacitation induced by tasers," write Dr. Richard Wennberg and coauthors from Toronto Western Hospital and the University of Toronto.

A neurologic assessment of the patient also diagnosed mild traumatic brain injury and postconcussion syndrome related to head impact from the taser shot or the fall to the ground during the seizure.

"Until now, most reports of taser-related adverse events have understandably concentrated on cardiac complications associated with shots to the chest," write the authors. "Our report shows that a taser shot to the head may result in brain-specific complications."

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The above story is reprinted from materials provided by Canadian Medical Association Journal, via EurekAlert!, a service of AAAS.

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