Articles: ninos.
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We report the case of a 29-year-old male soldier with a time in service above 10 years, found to have asymptomatic long QT syndrome (LQTS), a condition associated with increased risk of potentially fatal ventricular arrhythmias, during a flight physical. A review of his past medical history revealed a transient QT prolongation during an episode of hypoglycemia due to endogenous hyperinsulinism caused by an insulinoma, as an infantryman 7 years earlier; the resolution of the QT prolongation was spontaneous. He was evaluated and considered fit for duty by cardiology. ⋯ Military setting facilitated the detection of an otherwise occult LQTS in this asymptomatic young serviceman. Retrospectively, the LQTS was transiently unmasked during an episode of hypoglycemia. Hypoglycemia deserves more recognition as a potential cause of QT prolongation.