Journal
FRONTIERS IN TOXICOLOGY
Volume 3, Issue -, Pages -Publisher
FRONTIERS MEDIA SA
DOI: 10.3389/ftox.2021.690964
Keywords
snake antivenom; adverse reaction; safety; bothrops; snakebite accident; effectiveness
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A study in Uruguay analyzed the doses and adverse reactions of snake antivenoms used in 2018, noting that the lyophilized antivenom BIOL (R) had a higher initial dose but effectively neutralized venom with minimal complications. Early adverse reactions were detected in a small number of patients treated with BIOL antivenom, while no adverse reactions were reported with traditional liquid antivenoms.
In Uruguay, around 60 cases of snakebite accidents occur every year that need to be treated with specific antivenom. They are caused by two snakes of Bothrops genus: Bothrops alternatus and Bothrops pubescens. Snakebite accidents are mandatory notification events, allowing the acquisition of an accurate registry and a fluent communication with the health care services. The aim of this study is to analyze and report the doses administered to achieve the neutralization of the venom and the adverse reactions caused by snake antivenoms used in Uruguay in 2018, when a change was made in the type of antivenom available. In this year, Uruguay started to use the BIOL (R) antivenom (lyophilized) and this use coexists with traditional antivenom liquid forms (Vital Brazil and Malbran). The number of patients treated with heterologous BIOL (R) antivenom were 28 and the ones treated with heterologous solutions Malbran and Vital Brazil antivenoms were 21. The initial dose of BIOL antivenom was 8 vials instead of 4 vials regularly used with the others antivenoms and it achieved the neutralization of most cases (27/28 cases). Early adverse reactions were detected in 4 patients (3 in children) treated with BIOL antivenom and there were no adverse reactions in those treated with Malbran or Vital Brazil antivenoms. Lyophilized antivenom BIOL is being used widely in Uruguay without major complications.
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