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Cardiac arrest due to long QT syndrome associated with excessive consumption of energy drinks

Published:November 07, 2011DOI:https://doi.org/10.1016/j.ijcard.2011.10.017
      The congenital form of long QT syndrome is characterized by a prolonged QT interval in the electrocardiogram (ECG) and is complicated by episodes of polymorphic ventricular tachycardia known as torsades de pointes (TdP). Patients with long QT syndrome 1 (LQTS-1) typically may suffer cardiac arrest during exercise. Based on these observations beta-blocker therapy is recommended in these patients to reduce the maximal heart rate and blunt the effects of adrenaline. Energy drinks contain high doses of taurine (an amino acid), caffeine and glucuronolactone (a glucose metabolite), neither of which is considered to have significant toxicity.

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