Radiofrequency (RF) electrocutions are uncommon. A case of electrocution at
196 MHz is presented partly because there are no previous reports with fre
quencies as high as this, and partly to assist in safety standard setting.
A 53-year-old technician received two brief exposures to both hands of 2A c
urrent at 196 MHz. He did not experience shock or burn. Progressively over
the next days and months he developed joint pains in the hands, wrists and
elbows, altered temperature and touch sensation and parasthesiae. Extensive
investigation found no frank neurological abnormality, but there were chan
ges in temperature perception in the palms and a difference in temperature
between hands. His symptoms were partly alleviated with ultra-sound therapy
, phenoxybenzamine and glyceryl trinitrate patches locally applied, but aft
er several months he continues to have some symptoms. The biophysics and cl
inical aspects are discussed. It is postulated that there was mainly surfac
e flow of current and the micro-vasculature was effected. Differences to 50
Hz electrocution are noted. Electrocution at 196 MHz, even in the absence
of burns may cause long-term morbidity to which physicians should be alerte
d. Safety standards should consider protection from electrocution at these
frequencies.