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A 68-year-old man, who had undergone laryngectomy six months earlier, was struck by lightning and developed pulmonary hemorrhage. This was attributed to pulmonary barotrauma due to a lightning blast via his tracheostoma.
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A chi-square analysis of 66 cases, including the author's eight cases and 58 from the literature, was undertaken to determine prognostic signs for death in patients seriously injured by lightning. A review of the injuries and of the physics and pathophysiology of lightning is presented. Prognosis was poor for those victims suffering leg burns (mortality 30%), cranial burns (37%), or cardiopulmonary arrest (76%). Death occurred in 30% of the cases studied. Permanent sequelae were found in 74% of the survivors. Nonsignificant factors were age, sex, and trunk and arm burns. Resuscitation of victims exhibiting loss of consciousness should begin immediately, as these are the most likely to die.
The case of a man who was injured by a stroke of lightning while using the telephone is reported. The patient sustained paralysis, sensory symptoms, otological disturbance and pathognomonic dendriform cutaneous marks (Lichtenberg figures). The relevant literature is reviewed, and the epidemiology and preventive measures are discussed.
Three pigs, weighing 63 kg-70 kg each, from a group of 8 pigs in an outdoor pen that was struck by lightning were necropsied. All 3 pigs presented with hind limb paralysis. The only lesions identified were multiple fractures of the last (seventh) lumbar vertebral body and first sacral vertebral segment, with dorsal displacement of the sacrum and transection of the distal spinal cord and spinal nerves. Hemorrhages extended from the fracture sites into muscles immediately surrounding the lumbosacral junction and retroperitoneally into the pelvic cavity. These hemorrhages were not clearly visible until the pelvic region was dissected. Lesions commonly found in human lightning-strike victims were not present in these pigs. Because vertebral fractures may be the only lesions and may be grossly subtle in heavily muscled pigs, careful pelvic and vertebral dissection is recommended in cases of suspected lightning strike and electrocution.
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Lightning is a hazard during outdoor activities, especially for hikers and mountaineers. Specific preventive measures include staying off ridges and summits, and away from single trees. If possible, stay close to a wall but keeping a distance of at least 1m away from the wall. All metal objects (carabiners, crampons, ice-axe, ski poles, etc.) should be removed and stored away safely. Lightning currents can follow wet ropes. To prevent blunt trauma the helmet should not be removed. Move as quickly as possible away from wire ropes and iron ladders. The crouch position should be adopted immediately if there is a sensation of hair "standing on end". Crackling noises or a visible glow indicate an imminent lightning strike. Rescue of lightning victims may be hazardous. Airborne helicopters can be struck by lightning with disastrous effects. It is prudent to wait until the danger of further strikes has passed. Treatment of lightning victims is based upon the ABCs - (Assessment) airway, breathing and circulation. Victims who are not breathing can often be resuscitated and should be helped first. Respiratory arrest may be prolonged, but the prognosis can be excellent if breathing is supported. Standard Advanced Life Support (ALS), if necessary, should be given at the scene.
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