Relation of QRS Voltage and Prolonged QTc Interval to One-Year Mortality

Abstract The association between QRS voltage and QTc interval prolongation with mortality for up to 1 year after recording an ECG on patients attending emergency departments was examined in a retrospective register-based observational study on 37,473 patients attending 2 Danish emergency departments. Of 37,473 patients who had an ECG performed on their first ED presentation 2,164 (5.8%) died within 30 days of presentation and 6,395 (17.1%) died within a year. Compared to survivors, patients who died had significantly longer QRS intervals and lower QRS voltages. A combined lead I and II QRS voltage