Electronic Vapor Cigarette Battery Explosion Causing Shotgun-like Superficial Wounds and Contusion

INTRODUCTION Electronic vapor cigarettes (E-cigarettes) were created in 2003 as an alternative to traditional tobacco cigarettes. E-cigarettes have been available in the United States since 2006.1 The typical E-cigarette consists of a cartridge that contains liquid, an atomizer that heats the liquid (i.e. acts as a vaporizer), as well as a battery. The liquid contained within the cartridge contains nicotine, propylene glycol and/ or glycerol as well as flavorings. The consumer uses an E-cigarette through either pushing a button or inhalation, which triggers heating and therefore aerosolizes the liquid within the cartridge, emulating cigarette “smoke.” The newest E-cigarettes are larger than nicotine cigarettes and employ stronger, rechargeable batteries as a power source.2,3 These new devices allow for custom modifications instituted by the user, including various options for cartridges and for the heating temperature of the atomizer. This creates the opportunity for mismatched components, leading to overheating. The current literature is limited on both the long-term health impact of E-cigarette use as well as the mechanical safety of these devices.2,3 We present the second documented case of burn injury due to explosion of an E-cigarette, and the first instance of the explosion occurring during usage of the device.4