Document Detail

Flicker illness: an underrecognized but preventable complication of helicopter transport.
MedLine Citation:
PMID:  17169884     Owner:  NLM     Status:  MEDLINE    
A case report of seizure due to photic stimulation from sunlight shining through spinning helicopter rotor blades is discussed. A review of photosensitive epilepsy is provided with particular emphasis on the effects and frequencies of photic stimulation required to induce symptoms. The frequencies of flashing light produced by spinning helicopter rotor blades commonly used in air medical transport range from 24 to 27 flashes per second. These frequencies are well within the range reported in the literature to produce symptoms in the laboratory setting. The literature provides only a few case reports of individuals sustaining a seizure after photic stimulation from spinning turboprop or helicopter blades. Symptoms range from mild discomfort and headache to profound spatial disorientation and seizures and may be an underrecognized but preventable complication of air medical transport.
Jeremy T Cushman; Douglas J Floccare
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Prehospital emergency care : official journal of the National Association of EMS Physicians and the National Association of State EMS Directors     Volume:  11     ISSN:  1090-3127     ISO Abbreviation:  Prehosp Emerg Care     Publication Date:    2007 Jan-Mar
Date Detail:
Created Date:  2006-12-15     Completed Date:  2007-03-23     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9703530     Medline TA:  Prehosp Emerg Care     Country:  United States    
Other Details:
Languages:  eng     Pagination:  85-8     Citation Subset:  IM    
Division of EMS and Office of Prehospital Care, Department of Emergency Medicine, University of Rochester School of Medicine and Dentistry, Rochester, New York 14642, USA.
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MeSH Terms
Air Ambulances*
Epilepsy, Reflex / drug therapy,  etiology*,  prevention & control

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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