Monitoring of QTc interval is mandated in different clinical conditions. Nevertheless, intra-
subject variability of QTc intervals reduces the clinical utility of QTc monitoring strategies …

Current exercise recommendations make it difficult for long QT syndrome (LQTS) patients to
adopt a physically active and/or athletic lifestyle. The purpose of this review is to summarize …

Pharmaceuticals that prolong ventricular repolarization may be proarrhythmic in susceptible
patients. While this fact is well recognized, schemes for sequential QTc interval monitoring in …

Background: Slow adaptation of the QT interval to abrupt changes in heart rate (HR) can
enhance ventricular heterogeneity and has been suggested as a marker of arrhythmic risk …

Objective: The clinical significance of QT interval adaptation to heart rate changes has been
poorly investigated in atrial fibrillation (AF), since QT delineation in the presence of f-waves …

On standard electrocardiogram (ECG) PQ interval is known to be moderately heart rate
dependent, but no physiologic details of this dependency have been established. At the …

The accuracy of studies of drug-induced QTc changes depends, among others, on the
accuracy of heart rate correction of QT interval. It has been recognized that when a drug …

Accurate evaluation of the appearance of QTc sex differences during childhood and
adolescence is intricate. Inter-subject differences of individual QT/RR patterns make generic …

Background Bazett formula is frequently used in paediatric screening for the long QT
syndrome (LQTS) and proposals exist that using standing rather than supine …

Diretriz Brasileira de Ergometria em População Adulta–2024 O relatório abaixo lista as
declarações de interesse conforme relatadas à SBC pelos especialistas durante o período …