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PubMed1981

Experimental studies on the effect of artificial respiration after lightning accidents.

Many suggestions have been made regarding protective methods against lightning, without any quantitative tests of safety. As a fundamental study on lightning protection, the lethal threshold energy for the artificial lightning impulse was investigated, using 14 rabbits. The voltage and current impulse had a 1 microsecond wave front and 40 microsecond wave tail. The imposed energy was measured by simultaneous photographic recording of both voltage and current waves on separate oscilloscopes. The impulse voltage was applied to head, neck, upper chest, and lower chest while the right hind limb was grounded. Artificial lightning current impulses were fed through the skin of the animals by making the surface flash over so that the surface flash was monitored carefully to delete the data of this case which gives an erroneous energy value from the statistical analysis. The lethal threshold energy was found to be 157.6 +/- 54.1 Joule (J), and the percentage of survival was 25% when 160 J impulse energy was given. Impulses of 160 J were then applied to the heads of 21 other rabbits maintained on an artificial respirator. Under these conditions the percentage of survival increased significantly to 47.6%.

Animals↗
PubMed1994

Electrical cataract and optic neuropathy.

We report on a 20 year old male, who developed mature cataract (Electrical Cataract) on both eyes after a severe electric shock from high voltage. Both of his hands and the left foot had to be amputated, because of the severe injury. Although electrical cataract due to high voltage or lightning is rare, they may still occur after industrial or home electric accidents. Even if extracapsular cataract extraction with intraocular lens implantation is successfully performed, the final visual acuity will depend on other ocular damage due to the electric current.

Adult↗
PubMed1996

Gender and age differences in the prevalence of specific fears and phobias.

Point prevalence of specific fears and phobias was determined in 704 respondents of 1000 randomly selected adults aged 18-70 yr. A phobia for lightning, enclosed spaces, darkness, flying, heights, spiders, snakes, injections, dentists and/or injuries was defined if subjects reported a fear that was out of conscious control, interfered with life and lead to the avoidance of the feared object [American Psychiatric Association, 1994. Diagnostic and statistical manual of mental disorders (4th edn). Washington, DC: American Psychiatric Press.] Fear intensity was assessed using visual analogue scales. A factor analysis generally supported the classification of fears and phobias into: (1) situational phobias (lightning, enclosed spaces, darkness, flying and heights); (2) animal phobias (spiders and snakes); and (3) mutilation phobias (injections, dentists, injuries). Total point prevalence of any specific phobia was 19.9% (26.5% for females and 12.4% for males). In total, 21.2% women and 10.9% men met criterias for any single specific phobia. Multiple phobias was reported by 5.4% of the females and 1.5% of the males. Animal phobia had a prevalence of 12.1% in women and 3.3% in men. Point prevalence of situational phobia was 17.4% in women and 8.5% in men. For mutilation phobia no gender difference was observed, being presented in 3.2% of the women and 2.7% of the men. Women as compared to men gave higher fear ratings for all objects and situations. Inanimate object fears and phobias were more common in older than younger individuals. Animal fears were more intense in younger than in older individuals. Fear of flying increased and fear of injections decreased as a function of age in women but not in men. Thus, specific fears and phobias are heterogeneous with respect to sex and age distribution.

Adolescent↗
PubMed1978

Creatine phosphokinase isoenzyme fractions in the serum of a patient struck by lightning.

Serial creatine phosphokinase (CPK) isoenzyme determinations were taken in an 8-year-old boy whose being struck by lightning resulted in prolonged cerebral anoxia, inferolateral myocardial infarction and death. All three isoenzyme levels (CPK-MM, CPK-MB, and CPK-BB) were elevated. The CPK-BB isoenzyme level increase was transient, being very high three hours postlightning strike and disappearing at approximately 24 hours.

Brain Injuries↗
PubMed1977

[Causes of death in lightning strokes (author's transl)].

On the basis of the literature and of their own investigations, including animal experimentation, the authors attempt to show the possible causes of death following lightning strokes. Animal experiments give evidence of the important role of cardiac arrhythmias, in particular of asystolia and ventricular fibrillation. Cardiac arrest, respiratory standstill, burns, fractures, mechanical lesions of internal organs and hemorrhages are stated as causes of death. Moreover, autopsy fails to reveal recognizable changes in some of the victims.

Animals↗
PubMed2005

A bolt out of the blue.

Lightning is a particularly unsettling product of bad weather. It causes more deaths and injuries in the U.S. than either hurricanes or tornadoes do, and it strikes without warning, sometimes with nothing but blue sky overhead. In central Florida, where I live, thunderstorms are a daily occurrence during the summer, and so, ironically, people in the Sunshine State often spend their afternoons indoors to avoid the risk of death from the sky. Worldwide, lightning flashes about four million times a day, and bolts have even been observed on other planets. Yet despite its familiarity, we still do not know what causes lightning. It is a misconception that Benjamin Franklin solved the puzzle when he conducted his famous kite experiment in 1752.

Journal Article↗
PubMed1975

[Electrical injuries in childhood (author's transl)].

11 children were admitted with electrical injuries to the Department of Paediatrics, University of Graz, over the 10-year period 1965 to 1974. The electricity was of low voltage in the case of 9 of these children, who were injured whilst playing with plug sockets of defective cables and of high voltage in 4 case. 1 child was stuck by lightning. Cessation of respiration occurred in 4 of the patients and was successfully counteracted in all cases by prompt mouth-to-mouth breathing. 7 children were still shocked on admission. All children showed the characteristic skin lesions of electrical injury (current marks of linear, round or spidery form). The boy injured by high voltage electricity received extensive burns, in addition. The modes of electrical injury in childhood, the various forms of the resultant lesions, especially of the skin and the treatment of electrical burns are discussed.

Adolescent↗
PubMed2002

Recommendations for lightning protection in sport.

Lightning is an important cause of weather-related morbidity and mortality and is often underrated. There has been an increase in the proportion of casualties occurring during outdoor sport and recreational activities over recent years. However, in Australia, there is a deficiency in recommendations for lightning safety at sporting events. Organisers of sporting events should have a lightning safety policy that includes a designated weather watcher with the authority to stop or postpone the event, a specific chain of command, and designated safe areas. Suspension and resumption of play should follow the "30/30" rule: play should stop when the flash-to-bang count is 30 seconds, and should not resume until 30 minutes after the last lightning. At events with large crowds, additional time should be allowed for evacuating all people to safe areas.

Guidelines as Topic↗
PubMed1995

[A case of lightning resulting in ear burn].

The authors described a rare case of 13 years old girl burnt by lightning. The burns of the skin of neck, perforation and destruction of the handle of malleus were stated. No internal ear injury was observed.

Adolescent↗
PubMed1990

[Severe lightning pain during spinal anesthesia].

A 74-yr-old man was scheduled for the biopsy of prostatic tumor under spinal anesthesia. Preoperative serologic test for syphilis was highly positive. Spinal anesthesia was performed in the sitting position, and 2 ml of hyperbaric Neo-percamine S (a mixture of 0.24% dibucaine and 0.12% T-caine) was administered uneventfully with the onset of warm sensation on the perineal region. Ten minutes later, however, he began to complain of severe lightning sensation on the feet. After giving pentazocine intravenously, the short cystoscopic procedure was completed. As a cause of severe pain, an erroneous anesthetic solution or direct neuronal injury had been excluded because of rapid and complete recovery after anesthesia. Two weeks later, he was scheduled for TUR-P. He again complained of severe lightning pain after the successful spinal anesthesia with the same anesthetic solution. Because the pain was not relieved by analgesics, he was then anesthetized with enflurane and N2O in oxygen, and there were no neurological complications after anesthesia. Several cases of severe pain during spinal anesthesia have been reported in patients with tabes dorsalis. Although the patient lacks clear symptoms of neurosyphilis, positive serologic examination for syphilis without any other possible causes suggests altered sensitivity of the spinal cord to anesthetic solutions.

Aged↗