[Detection of long Q-T interval in mass screening of the population]

The incidence of lengthened Q-T interval in an open population of 45- to 54-year-old males was assessed in a random representative sample. Lengthened electrocardiographic Q-T interval was detected in 3.5% of cases. The identification of individuals with lengthened Q-T intervals at population screenings, their follow-up and the development of preventive measures against ventricular tachyarrhythmias and sudden death are shown to be warranted.