Fisiopatología de las quemaduras eléctricas: artículo de revisión / Physiopathology of electrical burns

Las quemaduras eléctricas son consideradas uno de los traumas más drásticos al cual puede verse expuesto un individuo, que afecta directa o indirectamente a casi todos los sistemas del cuerpo humano. Este tipo de trauma tiene efectos locales y sistémicos poco comprendidos por la mayoría del personal de salud. El objetivo de éste artículo es ofrecer una explicación completa, que permita al lector entender mejor la fisiopatología de este tipo de trauma y por lo tanto se manifieste en el actuar diario del personal de salud.

Electric burns are one of the most drastic traumas to which an individual can be exposed, They can directly or indirectly compromise almost all the systems of the human body, this type of trauma has local and systemic effects little understood by the majority of health personnel. The objective of this article is to offer a complete explanation, allowing the reader to better understand the pathophysiology of this type of trauma and therefore manifest in the daily actions of health personnel.

Padronização do tratamento cirúrgico do trauma elétrico na fase aguda / Standardization of surgical treatment of acute electrical trauma

INTRODUÇÃO: As queimaduras elétricas correspondem de 5 a 15% dos casos de acidentes com queimaduras. A maioria está associada a acidentes do trabalho, nos quais predominam as lesões com alta voltagem (acima de 1.000 Volts), em pacientes do sexo masculino. As taxas de mortalidade variam de 2 a 15%, nos mais diversos centros de queimados. O objetivo é revisar padronização das etapas cirúrgicas na fase aguda de desbridamento (primeiros 15 dias) pela comparação de dosagem de creatofosfoquinase, hidratação venosa e fotografias para a aplicação de uma rotina de etapas cirúrgicas. MÉTODOS: Trata-se de um estudo quantitativo, prospectivo, realizado em um hospital público da cidade de Fortaleza, CE, entre julho de 2013 a dezembro de 2015. A população foi composta por adultos jovens, entre 15 e 50 anos, de ambos os sexos, vítimas de queimaduras por choque elétrico, com lesão de terceiro grau, no mínimo muscular. RESULTADOS: Foram realizados 12 procedimentos cirúrgicos de amputações nos 15 pacientes do estudo (60%). Seis pacientes não sofreram amputação (40%). Um paciente sofreu três procedimentos de amputação no mesmo membro (pododáctilo, pé e coxa esquerdos) e outro, duas amputações em membros superiores distintos. CONCLUSÃO: O tratamento na fase aguda do choque elétrico deve incluir uma imediata e adequada reposição líquida venosa, associada com procedimentos cirúrgicos de desbridamentos e de amputações, o mais precoce possível, em etapas com intervalos de 48 a 72 horas.

INTRODUCTION: Electrical burns are responsible for 5% to 15% of cases of burn accidents. The majority is associated with workplace accidents, in which high-voltage injuries (>1,000 V) predominate in male patients. The mortality rates vary from 2% to 15% in different burn centers. The objective is to review the standardization of surgical steps in the acute phase of debridement (the first 15 days) by comparison of creatine phosphokinase levels, intravenous hydration, and photographs to implement routine surgical stages. METHODS: This was a quantitative, prospective study performed in a public hospital in the city of Fortaleza, Brazil, between July 2013 and December 2015. The population was composed of young adults between 15 and 50 years, of both sexes, who experienced electrical burns, with third-degree injuries and muscle involvement. RESULTS: Of the 15 patients in the study, 9 (60%) patients underwent 13 surgical amputation procedures and 6 (40%) patients did not undergo amputation. One patient underwent three amputation procedures in the same limb (toe, foot, and thigh) and another patient underwent two amputations in the upper limbs. CONCLUSION: Treatment in the acute phase of electrical shock must include immediate and adequate intravenous fluid replacement, along with surgical procedures of debridement and amputations, as early as possible, in steps with intervals of 48 to 72 hours.

Pattern of injuries due to electric current.

A one year study, from October 2007 to September 2008, was under taken in an attempt to study the pattern of electrical injury, the cause of death, manner of death, and diagnosis by histopathological examination. The study was compromised of 62 cases brought with history of electrical shock. Of the total 62 cases, males were 57(91.93%) and females were 5(8.06%) the mean age is 26 .27 year. The peak age of victims are 21-30 years age group 24 cases (38.71%].In the age group of 1n 0-10 years age group victims 3. Most of cases were due to low tension and domestic circuit. The patterns of electrical injuries are noted, such as entry, exit and both entry, exit wounds, flash burns and no electrical signs. The maximum victims showed dermo-epidermal degree of electrical burns .The histopathological examination is an important aid in diagnosis of electrical injuries and recommendations about preventive safety measures to reduce the mortality.

Profile of deaths due to electrocution: A retrospective study.

We carried out a retrospective analysis of deaths due to electrocution from the medico-legal deaths reported to our institution. Majority of the victims were males belonging to the age group of 11-50 years. Almost all deaths were accidental and most of them were concentrated in the period of monsoon implicating the important role of wetness in causing these deaths. In contrast to the studies done in the West, bathtubs, heaters or hair dryers were not involved in any of the deaths. The mortality rate due to electrocution was significantly higher at 4.4 per one lakhs (100000) population in the present study as against the figures of 0.94 and 0.14 from Bulgaria and Canada respectively. Most of the deaths were either instantaneous or immediate and most of the deaths were preventable by electrocution. It signifies that people living at home did not have elementary knowledge of risks of electrocution; therefore awareness about use of good quality electric appliances and cables is the need of the hour.

La quemadura eléctrica por alto voltaje es un factor predictor de mortalidad en pacientes "grandes quemados" / High voltage electrical burns as a risk factor for mortality among burn patients

Background: Electrical burns are associated with complications and may aggravate burned patients. Aim: To evaluate the effect of electrical burns in mortality and length of stay in a critical care unit for burn patients. Material and Methods: Retrospective analysis of medical records of 182 patients aged 15 to 90 years, admitted to an intensive care unit for burn patients. The length of stay and mortality of 14 patients that suffered electric burns was compared with the features of 168 patients with other type of burns. Results: Patients with electrical burns were younger, had a lower percentage of total body surface burnt and had a lower frequency of inhalatory injuries than their counterparts with other type of burns. Mortality rate among patients with electric or other types of burns was similar (three and 49 patients, respectively). Intensive care unit stay was also similar. A multivariate analysis showed that high voltage electric burns were an independent risk factor for death with an odds ratio of 12 (95 percent confidence intervals 1.8-79.4). Conclusions: High voltage electric burns are an independent risk factor for death among burn patients.

[ Study of electrical injuries in Emam Reza burn center of Mashhad]

Electrical injuries currently remain a world-wide problem. Electrical burn injuries account for fewer than 5% of admissions [reported range 3-9%] to major burn centers. Electrical injuries are arbitrarily divided into high voltage [>1000 V], low voltage [<1000 V], lightening strikes, and electric arc. The aim of this study was to explore the mechanisms, complications, morbidity, and mortality associated with electrical injuries. This descriptive study was done from 2002 to 2006 in burn department of Imam Reza hospital of Mashhad. 132 patients with electrical injuries were admitted to the burn center. Collected data included: age, gender, etiology, burn size, hospital stay, amputation of limb and mortality. Data was gathered in a questionnaire and analyzed by descriptive statistics and frequency distribution tables. Of 5875 acute burn admissions during a 5-year period, 132 patients [2.4%] had electrical burn injuries. Their mean age was 26 years [range2-63 years]. Ninety-seven percent [128 patients] were male, and the extent of burn ranged from 1% to 80% TBSA [mean, 13.8% TBSA]. High-voltage electricity caused 75.7% [100 patients] of the electrical injuries, 23.5% [31 patients] were caused by low-voltage currents and 0.75% [1 patient] by lightening. Twenty six patients [19.7%] required one or more amputations. Six patients [4.5%] died. Electrical burn injuries continue to be a serious problem of modern society. Climbing power poles is the most common mechanism for high-voltage injury. Special consideration is required to prevent this type of injury in our region

Lesiones por electricidad en pediatría / Injuries by electricity in pediatrics

Desde el comienzo de los tiempos la gente ha visto la electricidad con miedo, poco se sabía del mecanismo de daño hasta que conenzó su uso controlado hace alrededor de 150 años; desde entonces, se han podido definir sus propiedades físicas y a través de éstas conocer la fisiopatología de sus efectos en el ser humano. Las lesiones por corriente eléctrica son relativamente poco frecuentes, constituyendo entre el 3 y 8,9 por ciento de las admisiones en las unidades de quemados; las tasas de natalidad también son bajas; sin embargo, la incapacidad que generan, tanto a corto como a largo plazo constituye el principal motivo de preocupación, sumado al hecho de que con la creciente disponibilidad de artefactos eléctricos la frecuencia de este tipo de lesiones ha ido en aumento. Según diversos estudios clínicos, el 22 por ciento de los pacientes hospitalizados por quemaduras eléctricas corresponde a niños entre 0 y 18 años, y en el 73,7 por ciento de los casos el accidente se produce mientras juegan, de lo cual se desprende que la prevención es un pilar fundamental en el manejo de este tipo de lesiones en pediatría

Comprometimento pulmonar em trauma eletrico: relato de caso / Pulmonary lesion in eletric injury: case report

Trauma eletricos severos constituem cerca de 5 por cento das admissoes em Unidades de Queimados. O acometimento visceral pela corrente eletrica apresenta grande morbidade e mortalidade. A presenca de lesoes viscerais sem continuidade com lesao de partes moles e pouco referida, porem de extrema gravidade, principalmente pela dificuldade diagnostica que apresenta. Lesoes cardiacas tem sido mais frequentemente relatadas, ocorrendo em 10 a 25 por cento dos pacientes, consistinto basicamente em arritmias e disturbios de conducao, consequentes a espasmos coronarios ou lesao muscular difusa pela corrente...