Directrices para el manejo de picaduras de alacrán en niños

Scorpion envenomation is a severe,sometimes fatal medical condition especially in children .Worldwide,there are more than 1.2 million scorpion stings each year,mostly in tropical and subtropical regions.Every year,more than 420,000 snake bite,scorpion sting and spider bite incidents occur in the Middle East and North Africa (MENA).In the region of Assiut,in the South of Egypt,the annual incidence and mortality by scorpion stings has been reported to be 88 and 5.5 per 100,000 inhabitants.There are 1500 sub species of scorpions in the globe,and 50 of those have venom that is harmful to humans.The most toxic scorpion families are the Buthidae family.The MENA region is home to 27 species of scorpions from three families:theButhidae,Hemiscorpiidae,and Scorpionidae.Significant morbidity and mortality are caused by scorpion stings .In addition to local effectslikeredness,pain,burning,and swelling,scorpion venom exhibits variability among sub species and has a complex structure made up of neurotoxic proteins,salts,acidic proteins,and organic compounds.These components can cause neurological,cardiovascular,hematologic,and renal side effects.Because scorpion venoms are complex mixtures of several toxins,including cardiotoxins,nephrotoxins,hemolytictoxins,and neurotoxins,there is a possible danger of developing severe and frequently deadly clinical consequences.Heart failure and pulmonary edema are the main causes of mortality .As regards management of scorpion sting early antivenom treatment is recommended but its value remains controversial as it may cause anaphylactic reactions .Furthermore the majority of cases need supportive treatment to alleviate the cardiovascular effect.Cardiovascular symptoms respond well to vasodilators such as alpha-1blockers like prazosin.Prazosinis considered a physiological and pharmacological antidote to scorpion venom action.It antagonizes the after-effects of venom-liberated catecholamines.Since the use of prazosin with antivenom the recovery from scorpion sting has been hastened and mortality rate has been reduced from 30% to 1%.Uptill now there are no guidlines implemented at our hospital for the management of scorpion sting so that our study will aim at implementing guidelines for management of children with scorpion sting and observe the outcome of those children.The guidelines used are those recommended from the Egyptian ministry of health and Population with the addition of prazosin as many studies have concluded the benefits of prazosin