Validation of ECG ruler for screening of Corrected QT prolongation in healthy subjects and patients with long QT syndrome
Abstract
Conclusion: QTc ruler with cut-off 430 ms in this small study proved to be valid and reliable screening tool for QTc assessment on resting EKGin case of measurement of 3 complexes and strict adherence to users guide. Also it showed that QQ interval is realiable estimate of RR interval.